/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-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 23:47:38,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 23:47:38,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 23:47:38,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 23:47:38,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 23:47:38,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 23:47:38,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 23:47:38,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 23:47:38,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 23:47:38,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 23:47:38,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 23:47:38,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 23:47:38,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 23:47:38,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 23:47:38,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 23:47:38,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 23:47:38,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 23:47:38,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 23:47:38,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 23:47:38,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 23:47:38,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 23:47:38,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 23:47:38,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 23:47:38,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 23:47:38,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 23:47:38,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 23:47:38,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 23:47:38,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 23:47:38,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 23:47:38,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 23:47:38,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 23:47:38,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 23:47:38,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 23:47:38,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 23:47:38,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 23:47:38,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 23:47:38,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 23:47:38,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 23:47:38,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 23:47:38,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 23:47:38,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 23:47:38,208 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-SemanticLbe.epf [2022-12-12 23:47:38,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 23:47:38,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 23:47:38,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 23:47:38,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 23:47:38,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 23:47:38,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 23:47:38,235 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 23:47:38,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 23:47:38,235 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 23:47:38,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 23:47:38,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 23:47:38,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 23:47:38,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 23:47:38,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 23:47:38,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 23:47:38,236 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 23:47:38,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 23:47:38,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 23:47:38,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 23:47:38,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 23:47:38,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 23:47:38,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 23:47:38,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 23:47:38,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 23:47:38,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 23:47:38,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 23:47:38,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 23:47:38,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 23:47:38,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 23:47:38,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 23:47:38,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 23:47:38,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 23:47:38,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 23:47:38,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 23:47:38,520 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 23:47:38,520 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 23:47:38,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2022-12-12 23:47:39,409 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 23:47:39,578 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 23:47:39,578 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2022-12-12 23:47:39,603 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91955ef5e/dea4648be26e4a8aa2308159a7eb1621/FLAG8b04727c2 [2022-12-12 23:47:39,613 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91955ef5e/dea4648be26e4a8aa2308159a7eb1621 [2022-12-12 23:47:39,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 23:47:39,616 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 23:47:39,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 23:47:39,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 23:47:39,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 23:47:39,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:47:39" (1/1) ... [2022-12-12 23:47:39,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d62168a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:47:39, skipping insertion in model container [2022-12-12 23:47:39,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:47:39" (1/1) ... [2022-12-12 23:47:39,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 23:47:39,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 23:47:39,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:47:39,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:47:39,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:47:39,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:47:39,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:47:39,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:47:39,765 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-12-12 23:47:39,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 23:47:39,778 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 23:47:39,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:47:39,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:47:39,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:47:39,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:47:39,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:47:39,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:47:39,794 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-12-12 23:47:39,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 23:47:39,806 INFO L208 MainTranslator]: Completed translation [2022-12-12 23:47:39,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:47:39 WrapperNode [2022-12-12 23:47:39,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 23:47:39,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 23:47:39,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 23:47:39,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 23:47:39,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:47:39" (1/1) ... [2022-12-12 23:47:39,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:47:39" (1/1) ... [2022-12-12 23:47:39,837 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 232 [2022-12-12 23:47:39,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 23:47:39,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 23:47:39,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 23:47:39,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 23:47:39,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:47:39" (1/1) ... [2022-12-12 23:47:39,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:47:39" (1/1) ... [2022-12-12 23:47:39,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:47:39" (1/1) ... [2022-12-12 23:47:39,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:47:39" (1/1) ... [2022-12-12 23:47:39,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:47:39" (1/1) ... [2022-12-12 23:47:39,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:47:39" (1/1) ... [2022-12-12 23:47:39,856 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:47:39" (1/1) ... [2022-12-12 23:47:39,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:47:39" (1/1) ... [2022-12-12 23:47:39,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 23:47:39,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 23:47:39,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 23:47:39,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 23:47:39,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:47:39" (1/1) ... [2022-12-12 23:47:39,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 23:47:39,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:47:39,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 23:47:39,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 23:47:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 23:47:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 23:47:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 23:47:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 23:47:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 23:47:39,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 23:47:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 23:47:39,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 23:47:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 23:47:39,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 23:47:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 23:47:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 23:47:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 23:47:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 23:47:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 23:47:39,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 23:47:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 23:47:39,923 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 23:47:39,992 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 23:47:39,993 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 23:47:40,337 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 23:47:40,429 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 23:47:40,430 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-12 23:47:40,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:47:40 BoogieIcfgContainer [2022-12-12 23:47:40,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 23:47:40,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 23:47:40,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 23:47:40,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 23:47:40,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 11:47:39" (1/3) ... [2022-12-12 23:47:40,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c36d74e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:47:40, skipping insertion in model container [2022-12-12 23:47:40,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:47:39" (2/3) ... [2022-12-12 23:47:40,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c36d74e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:47:40, skipping insertion in model container [2022-12-12 23:47:40,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:47:40" (3/3) ... [2022-12-12 23:47:40,437 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2022-12-12 23:47:40,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 23:47:40,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 23:47:40,453 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 23:47:40,536 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 23:47:40,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 280 transitions, 584 flow [2022-12-12 23:47:40,686 INFO L130 PetriNetUnfolder]: 27/277 cut-off events. [2022-12-12 23:47:40,686 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 23:47:40,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 277 events. 27/277 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 211 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 218. Up to 3 conditions per place. [2022-12-12 23:47:40,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 280 transitions, 584 flow [2022-12-12 23:47:40,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 267 transitions, 552 flow [2022-12-12 23:47:40,699 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 23:47:40,722 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 267 transitions, 552 flow [2022-12-12 23:47:40,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 267 transitions, 552 flow [2022-12-12 23:47:40,770 INFO L130 PetriNetUnfolder]: 27/267 cut-off events. [2022-12-12 23:47:40,771 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 23:47:40,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 267 events. 27/267 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 210 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 218. Up to 3 conditions per place. [2022-12-12 23:47:40,776 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 267 transitions, 552 flow [2022-12-12 23:47:40,777 INFO L226 LiptonReduction]: Number of co-enabled transitions 2634 [2022-12-12 23:47:48,359 INFO L241 LiptonReduction]: Total number of compositions: 233 [2022-12-12 23:47:48,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 23:47:48,373 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;@5c121928, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 23:47:48,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 23:47:48,378 INFO L130 PetriNetUnfolder]: 9/34 cut-off events. [2022-12-12 23:47:48,378 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 23:47:48,378 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:47:48,379 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] [2022-12-12 23:47:48,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:47:48,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:47:48,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2088592140, now seen corresponding path program 1 times [2022-12-12 23:47:48,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:47:48,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96155656] [2022-12-12 23:47:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:48,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:47:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:47:48,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:47:48,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96155656] [2022-12-12 23:47:48,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96155656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:47:48,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:47:48,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 23:47:48,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32865465] [2022-12-12 23:47:48,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:47:48,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 23:47:48,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:47:48,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 23:47:48,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 23:47:48,810 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2022-12-12 23:47:48,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:48,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:47:48,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2022-12-12 23:47:48,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:47:48,934 INFO L130 PetriNetUnfolder]: 747/978 cut-off events. [2022-12-12 23:47:48,934 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-12-12 23:47:48,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2011 conditions, 978 events. 747/978 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3223 event pairs, 313 based on Foata normal form. 0/547 useless extension candidates. Maximal degree in co-relation 1725. Up to 961 conditions per place. [2022-12-12 23:47:48,940 INFO L137 encePairwiseOnDemand]: 32/35 looper letters, 31 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2022-12-12 23:47:48,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 156 flow [2022-12-12 23:47:48,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 23:47:48,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 23:47:48,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2022-12-12 23:47:48,948 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2022-12-12 23:47:48,950 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2022-12-12 23:47:48,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 36 transitions, 156 flow [2022-12-12 23:47:48,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 36 transitions, 156 flow [2022-12-12 23:47:48,954 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 156 flow [2022-12-12 23:47:48,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:48,955 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:47:48,955 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] [2022-12-12 23:47:48,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 23:47:48,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:47:48,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:47:48,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1588698804, now seen corresponding path program 1 times [2022-12-12 23:47:48,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:47:48,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311987247] [2022-12-12 23:47:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:48,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:47:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:47:49,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:47:49,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311987247] [2022-12-12 23:47:49,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311987247] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:47:49,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764110845] [2022-12-12 23:47:49,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:49,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:47:49,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:47:49,137 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:47:49,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 23:47:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:49,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-12 23:47:49,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:47:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:47:49,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 23:47:49,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764110845] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:47:49,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 23:47:49,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-12 23:47:49,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132783180] [2022-12-12 23:47:49,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:47:49,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 23:47:49,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:47:49,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 23:47:49,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 23:47:49,318 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2022-12-12 23:47:49,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:49,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:47:49,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2022-12-12 23:47:49,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:47:49,454 INFO L130 PetriNetUnfolder]: 707/940 cut-off events. [2022-12-12 23:47:49,454 INFO L131 PetriNetUnfolder]: For 56/62 co-relation queries the response was YES. [2022-12-12 23:47:49,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2847 conditions, 940 events. 707/940 cut-off events. For 56/62 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3171 event pairs, 302 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 2423. Up to 917 conditions per place. [2022-12-12 23:47:49,461 INFO L137 encePairwiseOnDemand]: 28/35 looper letters, 29 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2022-12-12 23:47:49,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 234 flow [2022-12-12 23:47:49,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 23:47:49,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 23:47:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2022-12-12 23:47:49,464 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35 [2022-12-12 23:47:49,464 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2022-12-12 23:47:49,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 234 flow [2022-12-12 23:47:49,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 38 transitions, 234 flow [2022-12-12 23:47:49,470 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 234 flow [2022-12-12 23:47:49,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:49,473 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:47:49,473 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] [2022-12-12 23:47:49,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 23:47:49,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:47:49,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:47:49,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:47:49,680 INFO L85 PathProgramCache]: Analyzing trace with hash -776940662, now seen corresponding path program 1 times [2022-12-12 23:47:49,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:47:49,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904857791] [2022-12-12 23:47:49,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:49,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:47:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 23:47:49,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:47:49,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904857791] [2022-12-12 23:47:49,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904857791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:47:49,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:47:49,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 23:47:49,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950050819] [2022-12-12 23:47:49,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:47:49,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 23:47:49,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:47:49,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 23:47:49,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 23:47:49,902 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2022-12-12 23:47:49,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:49,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:47:49,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2022-12-12 23:47:49,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:47:50,069 INFO L130 PetriNetUnfolder]: 1502/1946 cut-off events. [2022-12-12 23:47:50,070 INFO L131 PetriNetUnfolder]: For 168/196 co-relation queries the response was YES. [2022-12-12 23:47:50,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7864 conditions, 1946 events. 1502/1946 cut-off events. For 168/196 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7225 event pairs, 321 based on Foata normal form. 1/1092 useless extension candidates. Maximal degree in co-relation 6805. Up to 1929 conditions per place. [2022-12-12 23:47:50,079 INFO L137 encePairwiseOnDemand]: 30/35 looper letters, 53 selfloop transitions, 4 changer transitions 1/61 dead transitions. [2022-12-12 23:47:50,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 61 transitions, 503 flow [2022-12-12 23:47:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 23:47:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 23:47:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2022-12-12 23:47:50,081 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2022-12-12 23:47:50,081 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2022-12-12 23:47:50,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 61 transitions, 503 flow [2022-12-12 23:47:50,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 60 transitions, 492 flow [2022-12-12 23:47:50,089 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 60 transitions, 492 flow [2022-12-12 23:47:50,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:50,090 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:47:50,090 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] [2022-12-12 23:47:50,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 23:47:50,090 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:47:50,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:47:50,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2124171002, now seen corresponding path program 1 times [2022-12-12 23:47:50,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:47:50,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646904642] [2022-12-12 23:47:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:50,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:47:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:47:50,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:47:50,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646904642] [2022-12-12 23:47:50,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646904642] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:47:50,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184247004] [2022-12-12 23:47:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:50,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:47:50,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:47:50,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:47:50,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 23:47:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:50,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 23:47:50,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:47:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:47:50,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:47:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:47:50,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184247004] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:47:50,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:47:50,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-12 23:47:50,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530910067] [2022-12-12 23:47:50,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:47:50,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 23:47:50,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:47:50,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 23:47:50,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-12-12 23:47:50,413 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 35 [2022-12-12 23:47:50,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 60 transitions, 492 flow. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:50,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:47:50,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 35 [2022-12-12 23:47:50,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:47:50,844 INFO L130 PetriNetUnfolder]: 2301/3088 cut-off events. [2022-12-12 23:47:50,844 INFO L131 PetriNetUnfolder]: For 1973/1979 co-relation queries the response was YES. [2022-12-12 23:47:50,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15154 conditions, 3088 events. 2301/3088 cut-off events. For 1973/1979 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13203 event pairs, 378 based on Foata normal form. 0/1957 useless extension candidates. Maximal degree in co-relation 8010. Up to 2914 conditions per place. [2022-12-12 23:47:50,861 INFO L137 encePairwiseOnDemand]: 24/35 looper letters, 135 selfloop transitions, 18 changer transitions 15/170 dead transitions. [2022-12-12 23:47:50,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 170 transitions, 1756 flow [2022-12-12 23:47:50,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 23:47:50,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 23:47:50,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2022-12-12 23:47:50,863 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.41785714285714287 [2022-12-12 23:47:50,863 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2022-12-12 23:47:50,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 170 transitions, 1756 flow [2022-12-12 23:47:50,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 155 transitions, 1588 flow [2022-12-12 23:47:50,876 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 155 transitions, 1588 flow [2022-12-12 23:47:50,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:50,877 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:47:50,877 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] [2022-12-12 23:47:50,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 23:47:51,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-12 23:47:51,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:47:51,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:47:51,083 INFO L85 PathProgramCache]: Analyzing trace with hash 566449740, now seen corresponding path program 1 times [2022-12-12 23:47:51,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:47:51,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115714441] [2022-12-12 23:47:51,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:51,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:47:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:47:51,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:47:51,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115714441] [2022-12-12 23:47:51,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115714441] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:47:51,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069499738] [2022-12-12 23:47:51,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:51,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:47:51,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:47:51,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:47:51,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 23:47:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:51,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 23:47:51,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:47:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:47:51,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:47:51,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:47:51,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069499738] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:47:51,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:47:51,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-12 23:47:51,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183025711] [2022-12-12 23:47:51,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:47:51,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 23:47:51,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:47:51,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 23:47:51,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-12-12 23:47:51,365 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 35 [2022-12-12 23:47:51,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 155 transitions, 1588 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:51,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:47:51,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 35 [2022-12-12 23:47:51,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:47:51,560 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1074] L61-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork0_#res#1.base_Out_2| 0) (= |v_thread2Thread1of1ForFork0_#res#1.offset_Out_2| 0) (not (< |v_thread2Thread1of1ForFork0_~i~1#1_In_1| v_~N~0_In_7))) InVars {thread2Thread1of1ForFork0_~i~1#1=|v_thread2Thread1of1ForFork0_~i~1#1_In_1|, ~N~0=v_~N~0_In_7} OutVars{thread2Thread1of1ForFork0_~i~1#1=|v_thread2Thread1of1ForFork0_~i~1#1_In_1|, thread2Thread1of1ForFork0_#res#1.base=|v_thread2Thread1of1ForFork0_#res#1.base_Out_2|, ~N~0=v_~N~0_In_7, thread2Thread1of1ForFork0_#res#1.offset=|v_thread2Thread1of1ForFork0_#res#1.offset_Out_2|} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_#res#1.base, thread2Thread1of1ForFork0_#res#1.offset][53], [115#L109-1true, 277#(< 0 ~N~0), 346#(<= (+ ~minb~0 ~mina~0) ~minc~0), thread2Thread1of1ForFork0InUse, thread3Thread1of1ForFork1InUse, 41#thread2EXITtrue, thread1Thread1of1ForFork2InUse, 700#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) (= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= thread1Thread1of1ForFork2_~i~0 1) (<= ~N~0 1)), 22#L48-5true, 19#L77-1true, 266#true, 520#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) (= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= ~N~0 1) (= thread3Thread1of1ForFork1_~i~2 1))]) [2022-12-12 23:47:51,560 INFO L382 tUnfolder$Statistics]: this new event has 18 ancestors and is cut-off event [2022-12-12 23:47:51,561 INFO L385 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2022-12-12 23:47:51,561 INFO L385 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-12-12 23:47:51,561 INFO L385 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2022-12-12 23:47:51,561 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([994] L61-4-->L61-4: Formula: (let ((.cse0 (* |v_thread2Thread1of1ForFork0_~i~1#1_36| 4)) (.cse1 (+ |v_thread2Thread1of1ForFork0_~i~1#1_36| 1)) (.cse2 (+ |v_thread2Thread1of1ForFork0_plus_~a#1_15| |v_thread2Thread1of1ForFork0_plus_~b#1_15|))) (and (<= 0 (+ |v_thread2Thread1of1ForFork0_plus_#res#1_15| 2147483648)) (= |v_thread2Thread1of1ForFork0_plus_#in~a#1_15| (select (select |v_#memory_int_205| v_~A~0.base_70) (+ .cse0 v_~A~0.offset_70))) (<= |v_thread2Thread1of1ForFork0_plus_#res#1_15| 2147483647) (= |v_thread2Thread1of1ForFork0_~i~1#1_35| .cse1) (= |v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_15| |v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_15|) (= |v_thread2Thread1of1ForFork0_plus_#in~b#1_15| (select (select |v_#memory_int_205| v_~B~0.base_62) (+ .cse0 v_~B~0.offset_62))) (= |v_thread2Thread1of1ForFork0_plus_#res#1_15| .cse2) (= (store |v_#memory_int_205| v_~C~0.base_50 (store (select |v_#memory_int_205| v_~C~0.base_50) (+ .cse0 v_~C~0.offset_50) |v_thread2Thread1of1ForFork0_plus_#res#1_15|)) |v_#memory_int_204|) (= v_~p~0_50 .cse1) (< |v_thread2Thread1of1ForFork0_~i~1#1_36| v_~N~0_71) (= (ite (or (<= .cse2 2147483647) (<= |v_thread2Thread1of1ForFork0_plus_~b#1_15| 0)) 1 0) |v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_15|) (= |v_thread2Thread1of1ForFork0_plus_~a#1_15| |v_thread2Thread1of1ForFork0_plus_#in~a#1_15|) (= |v_thread2Thread1of1ForFork0_plus_~b#1_15| |v_thread2Thread1of1ForFork0_plus_#in~b#1_15|))) InVars {~A~0.base=v_~A~0.base_70, ~B~0.base=v_~B~0.base_62, ~A~0.offset=v_~A~0.offset_70, ~C~0.base=v_~C~0.base_50, #memory_int=|v_#memory_int_205|, ~C~0.offset=v_~C~0.offset_50, thread2Thread1of1ForFork0_~i~1#1=|v_thread2Thread1of1ForFork0_~i~1#1_36|, ~N~0=v_~N~0_71, ~B~0.offset=v_~B~0.offset_62} OutVars{~A~0.base=v_~A~0.base_70, thread2Thread1of1ForFork0_plus_#in~a#1=|v_thread2Thread1of1ForFork0_plus_#in~a#1_15|, thread2Thread1of1ForFork0_#t~mem8#1=|v_thread2Thread1of1ForFork0_#t~mem8#1_15|, ~B~0.base=v_~B~0.base_62, ~C~0.base=v_~C~0.base_50, thread2Thread1of1ForFork0_plus_~a#1=|v_thread2Thread1of1ForFork0_plus_~a#1_15|, thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_15|, thread2Thread1of1ForFork0_~i~1#1=|v_thread2Thread1of1ForFork0_~i~1#1_35|, ~N~0=v_~N~0_71, thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1=|v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_15|, thread2Thread1of1ForFork0_#t~ret9#1=|v_thread2Thread1of1ForFork0_#t~ret9#1_15|, thread2Thread1of1ForFork0_plus_#in~b#1=|v_thread2Thread1of1ForFork0_plus_#in~b#1_15|, ~A~0.offset=v_~A~0.offset_70, thread2Thread1of1ForFork0_plus_~b#1=|v_thread2Thread1of1ForFork0_plus_~b#1_15|, thread2Thread1of1ForFork0_plus_#res#1=|v_thread2Thread1of1ForFork0_plus_#res#1_15|, #memory_int=|v_#memory_int_204|, ~C~0.offset=v_~C~0.offset_50, ~p~0=v_~p~0_50, thread2Thread1of1ForFork0_#t~mem7#1=|v_thread2Thread1of1ForFork0_#t~mem7#1_15|, ~B~0.offset=v_~B~0.offset_62, thread2Thread1of1ForFork0_#t~post6#1=|v_thread2Thread1of1ForFork0_#t~post6#1_15|} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_plus_#in~a#1, thread2Thread1of1ForFork0_#t~mem8#1, thread2Thread1of1ForFork0_plus_~a#1, thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1, thread2Thread1of1ForFork0_~i~1#1, thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1, thread2Thread1of1ForFork0_#t~ret9#1, thread2Thread1of1ForFork0_plus_#in~b#1, thread2Thread1of1ForFork0_plus_~b#1, thread2Thread1of1ForFork0_plus_#res#1, #memory_int, ~p~0, thread2Thread1of1ForFork0_#t~mem7#1, thread2Thread1of1ForFork0_#t~post6#1][54], [115#L109-1true, 277#(< 0 ~N~0), 346#(<= (+ ~minb~0 ~mina~0) ~minc~0), 235#L61-4true, thread2Thread1of1ForFork0InUse, thread3Thread1of1ForFork1InUse, thread1Thread1of1ForFork2InUse, 700#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) (= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (= thread1Thread1of1ForFork2_~i~0 1) (<= ~N~0 1)), 22#L48-5true, 19#L77-1true, 266#true, 520#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) (= |ULTIMATE.start_create_fresh_int_array_~size#1| ~N~0) (<= ~N~0 1) (= thread3Thread1of1ForFork1_~i~2 1))]) [2022-12-12 23:47:51,561 INFO L382 tUnfolder$Statistics]: this new event has 18 ancestors and is cut-off event [2022-12-12 23:47:51,561 INFO L385 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2022-12-12 23:47:51,561 INFO L385 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-12-12 23:47:51,561 INFO L385 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2022-12-12 23:47:51,728 INFO L130 PetriNetUnfolder]: 1388/1890 cut-off events. [2022-12-12 23:47:51,728 INFO L131 PetriNetUnfolder]: For 2102/2108 co-relation queries the response was YES. [2022-12-12 23:47:51,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10861 conditions, 1890 events. 1388/1890 cut-off events. For 2102/2108 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7160 event pairs, 242 based on Foata normal form. 37/1266 useless extension candidates. Maximal degree in co-relation 8740. Up to 1735 conditions per place. [2022-12-12 23:47:51,742 INFO L137 encePairwiseOnDemand]: 24/35 looper letters, 96 selfloop transitions, 12 changer transitions 38/148 dead transitions. [2022-12-12 23:47:51,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 148 transitions, 1797 flow [2022-12-12 23:47:51,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 23:47:51,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 23:47:51,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2022-12-12 23:47:51,745 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3392857142857143 [2022-12-12 23:47:51,747 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2022-12-12 23:47:51,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 148 transitions, 1797 flow [2022-12-12 23:47:51,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 110 transitions, 1342 flow [2022-12-12 23:47:51,760 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 110 transitions, 1342 flow [2022-12-12 23:47:51,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:51,760 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:47:51,760 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:47:51,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-12 23:47:51,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:47:51,967 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:47:51,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:47:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash -830905786, now seen corresponding path program 2 times [2022-12-12 23:47:51,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:47:51,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442513787] [2022-12-12 23:47:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:51,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:47:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-12 23:47:52,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:47:52,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442513787] [2022-12-12 23:47:52,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442513787] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:47:52,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311478582] [2022-12-12 23:47:52,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 23:47:52,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:47:52,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:47:52,127 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:47:52,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 23:47:52,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 23:47:52,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:47:52,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 23:47:52,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:47:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-12 23:47:52,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:47:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-12 23:47:52,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311478582] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 23:47:52,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 23:47:52,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2022-12-12 23:47:52,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222459592] [2022-12-12 23:47:52,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:47:52,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 23:47:52,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:47:52,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 23:47:52,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-12 23:47:52,320 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 35 [2022-12-12 23:47:52,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 110 transitions, 1342 flow. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:52,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:47:52,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 35 [2022-12-12 23:47:52,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:47:52,500 INFO L130 PetriNetUnfolder]: 1539/2099 cut-off events. [2022-12-12 23:47:52,500 INFO L131 PetriNetUnfolder]: For 4505/4513 co-relation queries the response was YES. [2022-12-12 23:47:52,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13551 conditions, 2099 events. 1539/2099 cut-off events. For 4505/4513 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7699 event pairs, 238 based on Foata normal form. 8/1499 useless extension candidates. Maximal degree in co-relation 12057. Up to 1839 conditions per place. [2022-12-12 23:47:52,513 INFO L137 encePairwiseOnDemand]: 30/35 looper letters, 167 selfloop transitions, 11 changer transitions 0/180 dead transitions. [2022-12-12 23:47:52,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 180 transitions, 2559 flow [2022-12-12 23:47:52,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 23:47:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 23:47:52,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2022-12-12 23:47:52,514 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.30952380952380953 [2022-12-12 23:47:52,514 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2022-12-12 23:47:52,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 180 transitions, 2559 flow [2022-12-12 23:47:52,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 180 transitions, 2559 flow [2022-12-12 23:47:52,525 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 180 transitions, 2559 flow [2022-12-12 23:47:52,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:52,525 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:47:52,525 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:47:52,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 23:47:52,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:47:52,731 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:47:52,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:47:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1023468062, now seen corresponding path program 1 times [2022-12-12 23:47:52,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:47:52,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966603030] [2022-12-12 23:47:52,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:52,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:47:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-12 23:47:52,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:47:52,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966603030] [2022-12-12 23:47:52,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966603030] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:47:52,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431925682] [2022-12-12 23:47:52,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:52,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:47:52,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:47:52,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:47:52,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 23:47:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:52,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 23:47:52,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:47:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-12 23:47:53,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:47:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-12 23:47:53,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431925682] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 23:47:53,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 23:47:53,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2022-12-12 23:47:53,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580847690] [2022-12-12 23:47:53,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:47:53,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 23:47:53,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:47:53,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 23:47:53,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-12 23:47:53,087 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 35 [2022-12-12 23:47:53,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 180 transitions, 2559 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:53,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:47:53,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 35 [2022-12-12 23:47:53,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:47:53,300 INFO L130 PetriNetUnfolder]: 1820/2445 cut-off events. [2022-12-12 23:47:53,301 INFO L131 PetriNetUnfolder]: For 8546/8623 co-relation queries the response was YES. [2022-12-12 23:47:53,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18157 conditions, 2445 events. 1820/2445 cut-off events. For 8546/8623 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9220 event pairs, 126 based on Foata normal form. 19/1719 useless extension candidates. Maximal degree in co-relation 16464. Up to 2173 conditions per place. [2022-12-12 23:47:53,345 INFO L137 encePairwiseOnDemand]: 27/35 looper letters, 206 selfloop transitions, 36 changer transitions 0/244 dead transitions. [2022-12-12 23:47:53,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 244 transitions, 3957 flow [2022-12-12 23:47:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 23:47:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 23:47:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2022-12-12 23:47:53,347 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2904761904761905 [2022-12-12 23:47:53,347 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2022-12-12 23:47:53,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 244 transitions, 3957 flow [2022-12-12 23:47:53,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 244 transitions, 3957 flow [2022-12-12 23:47:53,359 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 244 transitions, 3957 flow [2022-12-12 23:47:53,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:53,360 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:47:53,360 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:47:53,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 23:47:53,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:47:53,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:47:53,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:47:53,566 INFO L85 PathProgramCache]: Analyzing trace with hash 59551244, now seen corresponding path program 1 times [2022-12-12 23:47:53,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:47:53,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059892501] [2022-12-12 23:47:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:53,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:47:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 23:47:53,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:47:53,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059892501] [2022-12-12 23:47:53,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059892501] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:47:53,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040030494] [2022-12-12 23:47:53,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:53,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:47:53,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:47:53,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:47:53,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 23:47:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:53,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 23:47:53,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:47:53,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 23:47:53,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:47:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 23:47:53,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040030494] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 23:47:53,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 23:47:53,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2022-12-12 23:47:53,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054691769] [2022-12-12 23:47:53,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:47:53,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 23:47:53,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:47:53,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 23:47:53,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-12 23:47:53,908 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 35 [2022-12-12 23:47:53,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 244 transitions, 3957 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:53,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:47:53,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 35 [2022-12-12 23:47:53,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:47:54,164 INFO L130 PetriNetUnfolder]: 2008/2651 cut-off events. [2022-12-12 23:47:54,165 INFO L131 PetriNetUnfolder]: For 14696/14886 co-relation queries the response was YES. [2022-12-12 23:47:54,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22502 conditions, 2651 events. 2008/2651 cut-off events. For 14696/14886 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9640 event pairs, 25 based on Foata normal form. 50/1893 useless extension candidates. Maximal degree in co-relation 20123. Up to 2413 conditions per place. [2022-12-12 23:47:54,182 INFO L137 encePairwiseOnDemand]: 28/35 looper letters, 274 selfloop transitions, 28 changer transitions 0/304 dead transitions. [2022-12-12 23:47:54,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 304 transitions, 5539 flow [2022-12-12 23:47:54,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 23:47:54,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 23:47:54,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2022-12-12 23:47:54,183 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3047619047619048 [2022-12-12 23:47:54,184 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2022-12-12 23:47:54,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 304 transitions, 5539 flow [2022-12-12 23:47:54,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 304 transitions, 5539 flow [2022-12-12 23:47:54,201 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 304 transitions, 5539 flow [2022-12-12 23:47:54,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:47:54,201 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:47:54,201 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:47:54,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 23:47:54,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:47:54,407 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:47:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:47:54,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1541016995, now seen corresponding path program 1 times [2022-12-12 23:47:54,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:47:54,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240972408] [2022-12-12 23:47:54,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:54,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:47:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:47:56,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:47:56,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240972408] [2022-12-12 23:47:56,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240972408] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:47:56,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967312727] [2022-12-12 23:47:56,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:47:56,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:47:56,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:47:56,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:47:56,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 23:47:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:47:56,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-12 23:47:56,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:47:56,808 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 23:47:56,808 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 28 treesize of output 20 [2022-12-12 23:47:57,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:47:57,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:47:57,167 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-12 23:47:57,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-12-12 23:47:57,376 INFO L321 Elim1Store]: treesize reduction 32, result has 54.9 percent of original size [2022-12-12 23:47:57,376 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 59 [2022-12-12 23:47:58,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:47:58,624 INFO L321 Elim1Store]: treesize reduction 108, result has 61.8 percent of original size [2022-12-12 23:47:58,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 244 treesize of output 384 [2022-12-12 23:57:17,750 WARN L233 SmtUtils]: Spent 28.77s on a formula simplification that was a NOOP. DAG size: 9960 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-12 23:57:58,169 WARN L233 SmtUtils]: Spent 26.64s on a formula simplification that was a NOOP. DAG size: 9162 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-12 23:58:55,202 WARN L233 SmtUtils]: Spent 56.95s on a formula simplification that was a NOOP. DAG size: 9165 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 00:00:36,664 WARN L233 SmtUtils]: Spent 1.24m on a formula simplification. DAG size of input: 8489 DAG size of output: 6337 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2022-12-13 00:01:58,607 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-13 00:01:58,608 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-13 00:01:58,611 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-13 00:01:58,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 00:01:58,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 00:01:58,815 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ATOM-1 context. [2022-12-13 00:01:58,816 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-13 00:01:58,817 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-13 00:01:58,817 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-13 00:01:58,817 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:01:58,819 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 00:01:58,819 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 00:01:58,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 12:01:58 BasicIcfg [2022-12-13 00:01:58,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 00:01:58,822 INFO L158 Benchmark]: Toolchain (without parser) took 859206.21ms. Allocated memory was 177.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 153.5MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2022-12-13 00:01:58,822 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 153.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 00:01:58,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.39ms. Allocated memory is still 177.2MB. Free memory was 153.2MB in the beginning and 140.2MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-13 00:01:58,822 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.35ms. Allocated memory is still 177.2MB. Free memory was 140.2MB in the beginning and 137.8MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-13 00:01:58,822 INFO L158 Benchmark]: Boogie Preprocessor took 21.56ms. Allocated memory is still 177.2MB. Free memory was 137.8MB in the beginning and 135.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-13 00:01:58,823 INFO L158 Benchmark]: RCFGBuilder took 571.76ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 135.7MB in the beginning and 178.7MB in the end (delta: -43.0MB). Peak memory consumption was 23.4MB. Max. memory is 8.0GB. [2022-12-13 00:01:58,823 INFO L158 Benchmark]: TraceAbstraction took 858387.90ms. Allocated memory was 212.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 177.6MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2022-12-13 00:01:58,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 153.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 190.39ms. Allocated memory is still 177.2MB. Free memory was 153.2MB in the beginning and 140.2MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.35ms. Allocated memory is still 177.2MB. Free memory was 140.2MB in the beginning and 137.8MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.56ms. Allocated memory is still 177.2MB. Free memory was 137.8MB in the beginning and 135.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 571.76ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 135.7MB in the beginning and 178.7MB in the end (delta: -43.0MB). Peak memory consumption was 23.4MB. Max. memory is 8.0GB. * TraceAbstraction took 858387.90ms. Allocated memory was 212.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 177.6MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.6s, 250 PlacesBefore, 36 PlacesAfterwards, 267 TransitionsBefore, 35 TransitionsAfterwards, 2634 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 173 TrivialYvCompositions, 41 ConcurrentYvCompositions, 18 ChoiceCompositions, 233 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1494, independent: 1465, independent conditional: 1465, independent unconditional: 0, dependent: 29, dependent conditional: 29, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1494, independent: 1465, independent conditional: 0, independent unconditional: 1465, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1494, independent: 1465, independent conditional: 0, independent unconditional: 1465, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1494, independent: 1465, independent conditional: 0, independent unconditional: 1465, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1389, independent: 1371, independent conditional: 0, independent unconditional: 1371, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1389, independent: 1371, independent conditional: 0, independent unconditional: 1371, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 62, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1494, independent: 94, independent conditional: 0, independent unconditional: 94, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 1389, unknown conditional: 0, unknown unconditional: 1389] , Statistics on independence cache: Total cache size (in pairs): 2191, Positive cache size: 2173, Positive conditional cache size: 0, Positive unconditional cache size: 2173, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 299 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.1s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 858.3s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 424 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 424 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1145 IncrementalHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 5 mSDtfsCounter, 1145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 356 GetRequests, 281 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5539occurred in iteration=8, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 634 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 518 ConstructedInterpolants, 0 QuantifiedInterpolants, 1518 SizeOfPredicates, 20 NumberOfNonLiveVariables, 2110 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 103/125 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown