/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 10:39:25,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 10:39:25,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 10:39:25,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 10:39:25,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 10:39:25,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 10:39:25,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 10:39:25,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 10:39:25,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 10:39:25,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 10:39:25,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 10:39:25,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 10:39:25,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 10:39:25,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 10:39:25,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 10:39:25,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 10:39:25,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 10:39:25,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 10:39:25,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 10:39:25,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 10:39:25,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 10:39:25,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 10:39:25,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 10:39:25,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 10:39:25,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 10:39:25,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 10:39:25,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 10:39:25,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 10:39:25,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 10:39:25,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 10:39:25,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 10:39:25,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 10:39:25,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 10:39:25,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 10:39:25,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 10:39:25,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 10:39:25,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 10:39:25,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 10:39:25,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 10:39:25,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 10:39:25,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 10:39:25,111 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-VariableLbe.epf [2023-01-28 10:39:25,130 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 10:39:25,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 10:39:25,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 10:39:25,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 10:39:25,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 10:39:25,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 10:39:25,132 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 10:39:25,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 10:39:25,132 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 10:39:25,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 10:39:25,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 10:39:25,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 10:39:25,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 10:39:25,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 10:39:25,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 10:39:25,133 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 10:39:25,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 10:39:25,133 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 10:39:25,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 10:39:25,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 10:39:25,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 10:39:25,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 10:39:25,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 10:39:25,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:39:25,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 10:39:25,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 10:39:25,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 10:39:25,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 10:39:25,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 10:39:25,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 10:39:25,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 10:39:25,134 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 10:39:25,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 10:39:25,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 10:39:25,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 10:39:25,321 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 10:39:25,321 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 10:39:25,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-01-28 10:39:26,315 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 10:39:26,486 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 10:39:26,487 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-01-28 10:39:26,491 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77c380065/ccb4be174d91441eb1d82e4955b4d847/FLAGd9bc367b7 [2023-01-28 10:39:26,502 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77c380065/ccb4be174d91441eb1d82e4955b4d847 [2023-01-28 10:39:26,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 10:39:26,505 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 10:39:26,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 10:39:26,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 10:39:26,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 10:39:26,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:39:26" (1/1) ... [2023-01-28 10:39:26,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef32895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:39:26, skipping insertion in model container [2023-01-28 10:39:26,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:39:26" (1/1) ... [2023-01-28 10:39:26,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 10:39:26,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 10:39:26,639 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2023-01-28 10:39:26,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:39:26,652 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 10:39:26,666 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2023-01-28 10:39:26,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:39:26,674 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:39:26,674 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:39:26,678 INFO L208 MainTranslator]: Completed translation [2023-01-28 10:39:26,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:39:26 WrapperNode [2023-01-28 10:39:26,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 10:39:26,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 10:39:26,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 10:39:26,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 10:39:26,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:39:26" (1/1) ... [2023-01-28 10:39:26,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:39:26" (1/1) ... [2023-01-28 10:39:26,706 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 203 [2023-01-28 10:39:26,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 10:39:26,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 10:39:26,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 10:39:26,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 10:39:26,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:39:26" (1/1) ... [2023-01-28 10:39:26,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:39:26" (1/1) ... [2023-01-28 10:39:26,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:39:26" (1/1) ... [2023-01-28 10:39:26,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:39:26" (1/1) ... [2023-01-28 10:39:26,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:39:26" (1/1) ... [2023-01-28 10:39:26,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:39:26" (1/1) ... [2023-01-28 10:39:26,727 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:39:26" (1/1) ... [2023-01-28 10:39:26,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:39:26" (1/1) ... [2023-01-28 10:39:26,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 10:39:26,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 10:39:26,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 10:39:26,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 10:39:26,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:39:26" (1/1) ... [2023-01-28 10:39:26,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:39:26,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:39:26,766 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) [2023-01-28 10:39:26,767 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 [2023-01-28 10:39:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 10:39:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 10:39:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 10:39:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 10:39:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 10:39:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 10:39:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 10:39:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 10:39:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 10:39:26,790 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 10:39:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 10:39:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 10:39:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 10:39:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 10:39:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 10:39:26,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 10:39:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 10:39:26,791 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 10:39:26,862 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 10:39:26,864 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 10:39:27,160 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 10:39:27,278 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 10:39:27,278 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 10:39:27,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:39:27 BoogieIcfgContainer [2023-01-28 10:39:27,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 10:39:27,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 10:39:27,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 10:39:27,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 10:39:27,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:39:26" (1/3) ... [2023-01-28 10:39:27,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3942bdcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:39:27, skipping insertion in model container [2023-01-28 10:39:27,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:39:26" (2/3) ... [2023-01-28 10:39:27,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3942bdcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:39:27, skipping insertion in model container [2023-01-28 10:39:27,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:39:27" (3/3) ... [2023-01-28 10:39:27,286 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2023-01-28 10:39:27,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 10:39:27,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 10:39:27,299 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 10:39:27,365 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 10:39:27,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 147 transitions, 318 flow [2023-01-28 10:39:27,438 INFO L130 PetriNetUnfolder]: 12/144 cut-off events. [2023-01-28 10:39:27,438 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 10:39:27,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 144 events. 12/144 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 97 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-01-28 10:39:27,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 147 transitions, 318 flow [2023-01-28 10:39:27,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 134 transitions, 286 flow [2023-01-28 10:39:27,448 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 10:39:27,455 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 134 transitions, 286 flow [2023-01-28 10:39:27,457 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 134 transitions, 286 flow [2023-01-28 10:39:27,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 134 transitions, 286 flow [2023-01-28 10:39:27,489 INFO L130 PetriNetUnfolder]: 12/134 cut-off events. [2023-01-28 10:39:27,489 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 10:39:27,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 134 events. 12/134 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 98 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-01-28 10:39:27,491 INFO L119 LiptonReduction]: Number of co-enabled transitions 1518 [2023-01-28 10:39:31,483 INFO L134 LiptonReduction]: Checked pairs total: 2063 [2023-01-28 10:39:31,484 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-01-28 10:39:31,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 10:39:31,497 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;@77b9eb03, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 10:39:31,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 10:39:31,501 INFO L130 PetriNetUnfolder]: 4/25 cut-off events. [2023-01-28 10:39:31,501 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 10:39:31,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:31,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:39:31,502 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)] === [2023-01-28 10:39:31,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:31,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1370048822, now seen corresponding path program 1 times [2023-01-28 10:39:31,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:31,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399264446] [2023-01-28 10:39:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:31,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:39:31,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:31,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399264446] [2023-01-28 10:39:31,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399264446] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:39:31,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:39:31,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 10:39:31,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327243302] [2023-01-28 10:39:31,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:39:31,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:39:31,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:31,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:39:31,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:39:31,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 274 [2023-01-28 10:39:31,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2023-01-28 10:39:31,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:31,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 274 [2023-01-28 10:39:31,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:32,061 INFO L130 PetriNetUnfolder]: 619/869 cut-off events. [2023-01-28 10:39:32,062 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-01-28 10:39:32,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1812 conditions, 869 events. 619/869 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3396 event pairs, 95 based on Foata normal form. 1/579 useless extension candidates. Maximal degree in co-relation 1365. Up to 688 conditions per place. [2023-01-28 10:39:32,070 INFO L137 encePairwiseOnDemand]: 269/274 looper letters, 36 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2023-01-28 10:39:32,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 203 flow [2023-01-28 10:39:32,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:39:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:39:32,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2023-01-28 10:39:32,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-01-28 10:39:32,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 411 transitions. [2023-01-28 10:39:32,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 411 transitions. [2023-01-28 10:39:32,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:32,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 411 transitions. [2023-01-28 10:39:32,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2023-01-28 10:39:32,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 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) [2023-01-28 10:39:32,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 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) [2023-01-28 10:39:32,102 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 70 flow. Second operand 3 states and 411 transitions. [2023-01-28 10:39:32,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 203 flow [2023-01-28 10:39:32,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 44 transitions, 181 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 10:39:32,107 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 84 flow [2023-01-28 10:39:32,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-01-28 10:39:32,113 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-01-28 10:39:32,114 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 84 flow [2023-01-28 10:39:32,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2023-01-28 10:39:32,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:32,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:39:32,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 10:39:32,116 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)] === [2023-01-28 10:39:32,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:32,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1687574261, now seen corresponding path program 1 times [2023-01-28 10:39:32,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:32,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968626672] [2023-01-28 10:39:32,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:32,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:32,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:39:32,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:32,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968626672] [2023-01-28 10:39:32,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968626672] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:39:32,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:39:32,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 10:39:32,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550472941] [2023-01-28 10:39:32,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:39:32,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:39:32,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:32,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:39:32,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 10:39:32,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 274 [2023-01-28 10:39:32,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 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) [2023-01-28 10:39:32,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:32,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 274 [2023-01-28 10:39:32,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:32,453 INFO L130 PetriNetUnfolder]: 1149/1685 cut-off events. [2023-01-28 10:39:32,453 INFO L131 PetriNetUnfolder]: For 279/279 co-relation queries the response was YES. [2023-01-28 10:39:32,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3857 conditions, 1685 events. 1149/1685 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7707 event pairs, 604 based on Foata normal form. 62/1379 useless extension candidates. Maximal degree in co-relation 1014. Up to 872 conditions per place. [2023-01-28 10:39:32,461 INFO L137 encePairwiseOnDemand]: 269/274 looper letters, 60 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-01-28 10:39:32,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 66 transitions, 316 flow [2023-01-28 10:39:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:39:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:39:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 593 transitions. [2023-01-28 10:39:32,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43284671532846714 [2023-01-28 10:39:32,463 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 593 transitions. [2023-01-28 10:39:32,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 593 transitions. [2023-01-28 10:39:32,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:32,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 593 transitions. [2023-01-28 10:39:32,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 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) [2023-01-28 10:39:32,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 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) [2023-01-28 10:39:32,467 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 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) [2023-01-28 10:39:32,467 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 84 flow. Second operand 5 states and 593 transitions. [2023-01-28 10:39:32,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 66 transitions, 316 flow [2023-01-28 10:39:32,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 66 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 10:39:32,470 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 110 flow [2023-01-28 10:39:32,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2023-01-28 10:39:32,471 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-01-28 10:39:32,471 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 110 flow [2023-01-28 10:39:32,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 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) [2023-01-28 10:39:32,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:32,471 INFO L208 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] [2023-01-28 10:39:32,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 10:39:32,472 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)] === [2023-01-28 10:39:32,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1620014424, now seen corresponding path program 1 times [2023-01-28 10:39:32,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:32,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989210764] [2023-01-28 10:39:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:32,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:32,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:32,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989210764] [2023-01-28 10:39:32,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989210764] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:32,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289124858] [2023-01-28 10:39:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:32,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:32,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:39:32,603 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) [2023-01-28 10:39:32,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 10:39:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:32,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 10:39:32,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:39:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:32,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:39:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:32,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289124858] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:32,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 10:39:32,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-01-28 10:39:32,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625180745] [2023-01-28 10:39:32,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:39:32,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 10:39:32,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:32,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 10:39:32,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-01-28 10:39:32,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 274 [2023-01-28 10:39:32,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 110 flow. Second operand has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-01-28 10:39:32,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:32,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 274 [2023-01-28 10:39:32,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:33,188 INFO L130 PetriNetUnfolder]: 1377/2035 cut-off events. [2023-01-28 10:39:33,189 INFO L131 PetriNetUnfolder]: For 771/847 co-relation queries the response was YES. [2023-01-28 10:39:33,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4774 conditions, 2035 events. 1377/2035 cut-off events. For 771/847 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9548 event pairs, 437 based on Foata normal form. 76/1813 useless extension candidates. Maximal degree in co-relation 3286. Up to 520 conditions per place. [2023-01-28 10:39:33,198 INFO L137 encePairwiseOnDemand]: 265/274 looper letters, 105 selfloop transitions, 23 changer transitions 0/130 dead transitions. [2023-01-28 10:39:33,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 130 transitions, 653 flow [2023-01-28 10:39:33,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 10:39:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 10:39:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1115 transitions. [2023-01-28 10:39:33,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40693430656934304 [2023-01-28 10:39:33,201 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1115 transitions. [2023-01-28 10:39:33,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1115 transitions. [2023-01-28 10:39:33,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:33,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1115 transitions. [2023-01-28 10:39:33,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 111.5) internal successors, (1115), 10 states have internal predecessors, (1115), 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) [2023-01-28 10:39:33,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 274.0) internal successors, (3014), 11 states have internal predecessors, (3014), 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) [2023-01-28 10:39:33,208 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 274.0) internal successors, (3014), 11 states have internal predecessors, (3014), 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) [2023-01-28 10:39:33,209 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 110 flow. Second operand 10 states and 1115 transitions. [2023-01-28 10:39:33,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 130 transitions, 653 flow [2023-01-28 10:39:33,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 130 transitions, 649 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 10:39:33,211 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 269 flow [2023-01-28 10:39:33,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=269, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2023-01-28 10:39:33,212 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2023-01-28 10:39:33,212 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 269 flow [2023-01-28 10:39:33,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-01-28 10:39:33,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:33,213 INFO L208 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] [2023-01-28 10:39:33,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 10:39:33,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:33,417 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)] === [2023-01-28 10:39:33,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:33,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1693539329, now seen corresponding path program 1 times [2023-01-28 10:39:33,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:33,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653515724] [2023-01-28 10:39:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:33,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:39:33,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:33,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653515724] [2023-01-28 10:39:33,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653515724] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:39:33,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:39:33,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 10:39:33,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959601590] [2023-01-28 10:39:33,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:39:33,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:39:33,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:33,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:39:33,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 10:39:33,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 274 [2023-01-28 10:39:33,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 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) [2023-01-28 10:39:33,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:33,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 274 [2023-01-28 10:39:33,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:33,688 INFO L130 PetriNetUnfolder]: 1185/1765 cut-off events. [2023-01-28 10:39:33,688 INFO L131 PetriNetUnfolder]: For 2302/2350 co-relation queries the response was YES. [2023-01-28 10:39:33,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5552 conditions, 1765 events. 1185/1765 cut-off events. For 2302/2350 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8020 event pairs, 604 based on Foata normal form. 94/1855 useless extension candidates. Maximal degree in co-relation 4344. Up to 1362 conditions per place. [2023-01-28 10:39:33,697 INFO L137 encePairwiseOnDemand]: 269/274 looper letters, 71 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-01-28 10:39:33,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 77 transitions, 497 flow [2023-01-28 10:39:33,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:39:33,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:39:33,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 567 transitions. [2023-01-28 10:39:33,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138686131386861 [2023-01-28 10:39:33,699 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 567 transitions. [2023-01-28 10:39:33,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 567 transitions. [2023-01-28 10:39:33,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:33,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 567 transitions. [2023-01-28 10:39:33,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 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) [2023-01-28 10:39:33,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 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) [2023-01-28 10:39:33,703 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 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) [2023-01-28 10:39:33,703 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 269 flow. Second operand 5 states and 567 transitions. [2023-01-28 10:39:33,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 77 transitions, 497 flow [2023-01-28 10:39:33,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 77 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 10:39:33,714 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 271 flow [2023-01-28 10:39:33,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-01-28 10:39:33,715 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2023-01-28 10:39:33,715 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 271 flow [2023-01-28 10:39:33,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 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) [2023-01-28 10:39:33,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:33,715 INFO L208 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] [2023-01-28 10:39:33,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 10:39:33,715 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)] === [2023-01-28 10:39:33,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:33,716 INFO L85 PathProgramCache]: Analyzing trace with hash -683777609, now seen corresponding path program 1 times [2023-01-28 10:39:33,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:33,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947682209] [2023-01-28 10:39:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:33,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:39:33,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:33,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947682209] [2023-01-28 10:39:33,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947682209] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:39:33,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:39:33,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 10:39:33,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542760880] [2023-01-28 10:39:33,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:39:33,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:39:33,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:33,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:39:33,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 10:39:33,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 274 [2023-01-28 10:39:33,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-01-28 10:39:33,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:33,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 274 [2023-01-28 10:39:33,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:34,014 INFO L130 PetriNetUnfolder]: 937/1384 cut-off events. [2023-01-28 10:39:34,014 INFO L131 PetriNetUnfolder]: For 1939/2017 co-relation queries the response was YES. [2023-01-28 10:39:34,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4486 conditions, 1384 events. 937/1384 cut-off events. For 1939/2017 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6114 event pairs, 376 based on Foata normal form. 92/1470 useless extension candidates. Maximal degree in co-relation 4143. Up to 975 conditions per place. [2023-01-28 10:39:34,020 INFO L137 encePairwiseOnDemand]: 268/274 looper letters, 52 selfloop transitions, 3 changer transitions 25/83 dead transitions. [2023-01-28 10:39:34,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 541 flow [2023-01-28 10:39:34,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:39:34,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:39:34,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 677 transitions. [2023-01-28 10:39:34,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4118004866180049 [2023-01-28 10:39:34,022 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 677 transitions. [2023-01-28 10:39:34,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 677 transitions. [2023-01-28 10:39:34,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:34,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 677 transitions. [2023-01-28 10:39:34,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:39:34,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 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) [2023-01-28 10:39:34,026 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 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) [2023-01-28 10:39:34,026 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 271 flow. Second operand 6 states and 677 transitions. [2023-01-28 10:39:34,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 541 flow [2023-01-28 10:39:34,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 511 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-01-28 10:39:34,032 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 219 flow [2023-01-28 10:39:34,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-01-28 10:39:34,034 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2023-01-28 10:39:34,034 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 219 flow [2023-01-28 10:39:34,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-01-28 10:39:34,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:34,035 INFO L208 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] [2023-01-28 10:39:34,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 10:39:34,035 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)] === [2023-01-28 10:39:34,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:34,035 INFO L85 PathProgramCache]: Analyzing trace with hash 705664608, now seen corresponding path program 2 times [2023-01-28 10:39:34,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:34,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789566993] [2023-01-28 10:39:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:34,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:34,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:34,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789566993] [2023-01-28 10:39:34,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789566993] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:34,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977803086] [2023-01-28 10:39:34,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:39:34,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:34,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:39:34,153 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) [2023-01-28 10:39:34,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 10:39:34,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:39:34,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:39:34,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 10:39:34,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:39:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:34,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:39:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:34,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977803086] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:34,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 10:39:34,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2023-01-28 10:39:34,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770308013] [2023-01-28 10:39:34,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:39:34,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 10:39:34,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:34,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 10:39:34,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-01-28 10:39:34,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 274 [2023-01-28 10:39:34,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 219 flow. Second operand has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-01-28 10:39:34,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:34,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 274 [2023-01-28 10:39:34,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:34,660 INFO L130 PetriNetUnfolder]: 1525/2203 cut-off events. [2023-01-28 10:39:34,660 INFO L131 PetriNetUnfolder]: For 2637/2637 co-relation queries the response was YES. [2023-01-28 10:39:34,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7095 conditions, 2203 events. 1525/2203 cut-off events. For 2637/2637 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 10103 event pairs, 265 based on Foata normal form. 16/2216 useless extension candidates. Maximal degree in co-relation 7067. Up to 772 conditions per place. [2023-01-28 10:39:34,669 INFO L137 encePairwiseOnDemand]: 263/274 looper letters, 74 selfloop transitions, 33 changer transitions 0/108 dead transitions. [2023-01-28 10:39:34,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 108 transitions, 719 flow [2023-01-28 10:39:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 10:39:34,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 10:39:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 877 transitions. [2023-01-28 10:39:34,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4000912408759124 [2023-01-28 10:39:34,671 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 877 transitions. [2023-01-28 10:39:34,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 877 transitions. [2023-01-28 10:39:34,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:34,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 877 transitions. [2023-01-28 10:39:34,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 109.625) internal successors, (877), 8 states have internal predecessors, (877), 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) [2023-01-28 10:39:34,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 274.0) internal successors, (2466), 9 states have internal predecessors, (2466), 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) [2023-01-28 10:39:34,676 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 274.0) internal successors, (2466), 9 states have internal predecessors, (2466), 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) [2023-01-28 10:39:34,676 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 219 flow. Second operand 8 states and 877 transitions. [2023-01-28 10:39:34,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 108 transitions, 719 flow [2023-01-28 10:39:34,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 108 transitions, 687 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-01-28 10:39:34,689 INFO L231 Difference]: Finished difference. Result has 53 places, 64 transitions, 469 flow [2023-01-28 10:39:34,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=469, PETRI_PLACES=53, PETRI_TRANSITIONS=64} [2023-01-28 10:39:34,689 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2023-01-28 10:39:34,689 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 64 transitions, 469 flow [2023-01-28 10:39:34,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-01-28 10:39:34,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:34,690 INFO L208 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] [2023-01-28 10:39:34,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 10:39:34,894 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,SelfDestructingSolverStorable5 [2023-01-28 10:39:34,894 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)] === [2023-01-28 10:39:34,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:34,895 INFO L85 PathProgramCache]: Analyzing trace with hash -186636764, now seen corresponding path program 3 times [2023-01-28 10:39:34,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:34,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209411858] [2023-01-28 10:39:34,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:34,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:34,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:34,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209411858] [2023-01-28 10:39:34,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209411858] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:34,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657926163] [2023-01-28 10:39:34,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:39:34,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:34,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:39:34,981 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) [2023-01-28 10:39:34,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 10:39:35,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 10:39:35,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:39:35,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 10:39:35,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:39:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:35,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:39:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:35,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657926163] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:35,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 10:39:35,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2023-01-28 10:39:35,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320429689] [2023-01-28 10:39:35,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:39:35,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 10:39:35,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:35,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 10:39:35,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-01-28 10:39:35,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 274 [2023-01-28 10:39:35,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 469 flow. Second operand has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-01-28 10:39:35,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:35,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 274 [2023-01-28 10:39:35,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:35,489 INFO L130 PetriNetUnfolder]: 1631/2359 cut-off events. [2023-01-28 10:39:35,489 INFO L131 PetriNetUnfolder]: For 4764/4764 co-relation queries the response was YES. [2023-01-28 10:39:35,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9333 conditions, 2359 events. 1631/2359 cut-off events. For 4764/4764 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 10944 event pairs, 201 based on Foata normal form. 12/2370 useless extension candidates. Maximal degree in co-relation 9304. Up to 720 conditions per place. [2023-01-28 10:39:35,502 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 100 selfloop transitions, 39 changer transitions 0/140 dead transitions. [2023-01-28 10:39:35,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 140 transitions, 1134 flow [2023-01-28 10:39:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 10:39:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 10:39:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 995 transitions. [2023-01-28 10:39:35,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034874290348743 [2023-01-28 10:39:35,505 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 995 transitions. [2023-01-28 10:39:35,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 995 transitions. [2023-01-28 10:39:35,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:35,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 995 transitions. [2023-01-28 10:39:35,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.55555555555556) internal successors, (995), 9 states have internal predecessors, (995), 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) [2023-01-28 10:39:35,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 274.0) internal successors, (2740), 10 states have internal predecessors, (2740), 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) [2023-01-28 10:39:35,509 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 274.0) internal successors, (2740), 10 states have internal predecessors, (2740), 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) [2023-01-28 10:39:35,509 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 469 flow. Second operand 9 states and 995 transitions. [2023-01-28 10:39:35,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 140 transitions, 1134 flow [2023-01-28 10:39:35,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 140 transitions, 1123 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 10:39:35,527 INFO L231 Difference]: Finished difference. Result has 64 places, 81 transitions, 777 flow [2023-01-28 10:39:35,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=777, PETRI_PLACES=64, PETRI_TRANSITIONS=81} [2023-01-28 10:39:35,527 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2023-01-28 10:39:35,527 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 81 transitions, 777 flow [2023-01-28 10:39:35,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-01-28 10:39:35,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:35,528 INFO L208 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] [2023-01-28 10:39:35,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 10:39:35,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:35,732 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)] === [2023-01-28 10:39:35,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:35,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1323058908, now seen corresponding path program 4 times [2023-01-28 10:39:35,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:35,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267757311] [2023-01-28 10:39:35,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:35,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:35,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:35,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267757311] [2023-01-28 10:39:35,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267757311] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:35,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823085449] [2023-01-28 10:39:35,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 10:39:35,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:35,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:39:35,852 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) [2023-01-28 10:39:35,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 10:39:35,932 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 10:39:35,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:39:35,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 10:39:35,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:39:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:36,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:39:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:36,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823085449] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:36,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 10:39:36,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2023-01-28 10:39:36,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397830348] [2023-01-28 10:39:36,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:39:36,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 10:39:36,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:36,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 10:39:36,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-01-28 10:39:36,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 274 [2023-01-28 10:39:36,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 81 transitions, 777 flow. Second operand has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-01-28 10:39:36,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:36,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 274 [2023-01-28 10:39:36,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:36,435 INFO L130 PetriNetUnfolder]: 1611/2320 cut-off events. [2023-01-28 10:39:36,435 INFO L131 PetriNetUnfolder]: For 8614/8614 co-relation queries the response was YES. [2023-01-28 10:39:36,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10748 conditions, 2320 events. 1611/2320 cut-off events. For 8614/8614 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10623 event pairs, 217 based on Foata normal form. 16/2335 useless extension candidates. Maximal degree in co-relation 10713. Up to 770 conditions per place. [2023-01-28 10:39:36,448 INFO L137 encePairwiseOnDemand]: 263/274 looper letters, 81 selfloop transitions, 54 changer transitions 0/136 dead transitions. [2023-01-28 10:39:36,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 136 transitions, 1287 flow [2023-01-28 10:39:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 10:39:36,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 10:39:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 993 transitions. [2023-01-28 10:39:36,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.402676399026764 [2023-01-28 10:39:36,451 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 993 transitions. [2023-01-28 10:39:36,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 993 transitions. [2023-01-28 10:39:36,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:36,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 993 transitions. [2023-01-28 10:39:36,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.33333333333333) internal successors, (993), 9 states have internal predecessors, (993), 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) [2023-01-28 10:39:36,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 274.0) internal successors, (2740), 10 states have internal predecessors, (2740), 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) [2023-01-28 10:39:36,455 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 274.0) internal successors, (2740), 10 states have internal predecessors, (2740), 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) [2023-01-28 10:39:36,456 INFO L175 Difference]: Start difference. First operand has 64 places, 81 transitions, 777 flow. Second operand 9 states and 993 transitions. [2023-01-28 10:39:36,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 136 transitions, 1287 flow [2023-01-28 10:39:36,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 136 transitions, 1262 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-28 10:39:36,479 INFO L231 Difference]: Finished difference. Result has 74 places, 88 transitions, 1016 flow [2023-01-28 10:39:36,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1016, PETRI_PLACES=74, PETRI_TRANSITIONS=88} [2023-01-28 10:39:36,480 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2023-01-28 10:39:36,480 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 88 transitions, 1016 flow [2023-01-28 10:39:36,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-01-28 10:39:36,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:36,480 INFO L208 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] [2023-01-28 10:39:36,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 10:39:36,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:36,685 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)] === [2023-01-28 10:39:36,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:36,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1413007916, now seen corresponding path program 5 times [2023-01-28 10:39:36,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:36,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820511121] [2023-01-28 10:39:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:36,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:36,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:36,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820511121] [2023-01-28 10:39:36,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820511121] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:36,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589617667] [2023-01-28 10:39:36,767 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 10:39:36,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:36,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:39:36,768 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) [2023-01-28 10:39:36,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 10:39:36,848 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:39:36,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:39:36,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 10:39:36,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:39:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:36,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:39:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:36,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589617667] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:39:36,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:39:36,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-01-28 10:39:36,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667510489] [2023-01-28 10:39:36,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:39:36,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 10:39:36,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:36,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 10:39:36,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-01-28 10:39:36,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 274 [2023-01-28 10:39:36,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 88 transitions, 1016 flow. Second operand has 12 states, 12 states have (on average 100.0) internal successors, (1200), 12 states have internal predecessors, (1200), 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) [2023-01-28 10:39:36,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:36,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 274 [2023-01-28 10:39:36,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:37,539 INFO L130 PetriNetUnfolder]: 1887/2767 cut-off events. [2023-01-28 10:39:37,539 INFO L131 PetriNetUnfolder]: For 15862/15862 co-relation queries the response was YES. [2023-01-28 10:39:37,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14436 conditions, 2767 events. 1887/2767 cut-off events. For 15862/15862 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12397 event pairs, 30 based on Foata normal form. 14/2780 useless extension candidates. Maximal degree in co-relation 14396. Up to 727 conditions per place. [2023-01-28 10:39:37,559 INFO L137 encePairwiseOnDemand]: 263/274 looper letters, 144 selfloop transitions, 160 changer transitions 0/304 dead transitions. [2023-01-28 10:39:37,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 304 transitions, 3651 flow [2023-01-28 10:39:37,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 10:39:37,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 10:39:37,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2195 transitions. [2023-01-28 10:39:37,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3814737573861661 [2023-01-28 10:39:37,564 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2195 transitions. [2023-01-28 10:39:37,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2195 transitions. [2023-01-28 10:39:37,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:37,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2195 transitions. [2023-01-28 10:39:37,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 104.52380952380952) internal successors, (2195), 21 states have internal predecessors, (2195), 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) [2023-01-28 10:39:37,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 274.0) internal successors, (6028), 22 states have internal predecessors, (6028), 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) [2023-01-28 10:39:37,578 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 274.0) internal successors, (6028), 22 states have internal predecessors, (6028), 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) [2023-01-28 10:39:37,578 INFO L175 Difference]: Start difference. First operand has 74 places, 88 transitions, 1016 flow. Second operand 21 states and 2195 transitions. [2023-01-28 10:39:37,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 304 transitions, 3651 flow [2023-01-28 10:39:37,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 304 transitions, 3553 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-28 10:39:37,636 INFO L231 Difference]: Finished difference. Result has 98 places, 199 transitions, 2868 flow [2023-01-28 10:39:37,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2868, PETRI_PLACES=98, PETRI_TRANSITIONS=199} [2023-01-28 10:39:37,637 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2023-01-28 10:39:37,637 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 199 transitions, 2868 flow [2023-01-28 10:39:37,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 100.0) internal successors, (1200), 12 states have internal predecessors, (1200), 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) [2023-01-28 10:39:37,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:37,638 INFO L208 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] [2023-01-28 10:39:37,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 10:39:37,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:37,843 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:39:37,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:37,844 INFO L85 PathProgramCache]: Analyzing trace with hash 533701012, now seen corresponding path program 6 times [2023-01-28 10:39:37,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:37,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424054952] [2023-01-28 10:39:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:37,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:37,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:37,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424054952] [2023-01-28 10:39:37,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424054952] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:37,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756898504] [2023-01-28 10:39:37,986 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 10:39:37,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:37,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:39:38,001 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) [2023-01-28 10:39:38,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 10:39:38,085 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 10:39:38,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:39:38,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 10:39:38,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:39:38,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:38,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:39:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:38,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756898504] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:38,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 10:39:38,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2023-01-28 10:39:38,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051903974] [2023-01-28 10:39:38,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:39:38,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 10:39:38,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:38,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 10:39:38,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-01-28 10:39:38,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 274 [2023-01-28 10:39:38,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 199 transitions, 2868 flow. Second operand has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-01-28 10:39:38,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:38,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 274 [2023-01-28 10:39:38,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:38,582 INFO L130 PetriNetUnfolder]: 1846/2692 cut-off events. [2023-01-28 10:39:38,582 INFO L131 PetriNetUnfolder]: For 20393/20393 co-relation queries the response was YES. [2023-01-28 10:39:38,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15823 conditions, 2692 events. 1846/2692 cut-off events. For 20393/20393 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11980 event pairs, 176 based on Foata normal form. 14/2705 useless extension candidates. Maximal degree in co-relation 15775. Up to 764 conditions per place. [2023-01-28 10:39:38,599 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 75 selfloop transitions, 152 changer transitions 0/236 dead transitions. [2023-01-28 10:39:38,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 236 transitions, 3478 flow [2023-01-28 10:39:38,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 10:39:38,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 10:39:38,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 874 transitions. [2023-01-28 10:39:38,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3987226277372263 [2023-01-28 10:39:38,601 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 874 transitions. [2023-01-28 10:39:38,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 874 transitions. [2023-01-28 10:39:38,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:38,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 874 transitions. [2023-01-28 10:39:38,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 109.25) internal successors, (874), 8 states have internal predecessors, (874), 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) [2023-01-28 10:39:38,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 274.0) internal successors, (2466), 9 states have internal predecessors, (2466), 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) [2023-01-28 10:39:38,631 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 274.0) internal successors, (2466), 9 states have internal predecessors, (2466), 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) [2023-01-28 10:39:38,631 INFO L175 Difference]: Start difference. First operand has 98 places, 199 transitions, 2868 flow. Second operand 8 states and 874 transitions. [2023-01-28 10:39:38,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 236 transitions, 3478 flow [2023-01-28 10:39:38,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 236 transitions, 3249 flow, removed 77 selfloop flow, removed 3 redundant places. [2023-01-28 10:39:38,700 INFO L231 Difference]: Finished difference. Result has 105 places, 202 transitions, 3194 flow [2023-01-28 10:39:38,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=2641, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3194, PETRI_PLACES=105, PETRI_TRANSITIONS=202} [2023-01-28 10:39:38,701 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 73 predicate places. [2023-01-28 10:39:38,701 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 202 transitions, 3194 flow [2023-01-28 10:39:38,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 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) [2023-01-28 10:39:38,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:38,701 INFO L208 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] [2023-01-28 10:39:38,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 10:39:38,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:38,906 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:39:38,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:38,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1990448776, now seen corresponding path program 1 times [2023-01-28 10:39:38,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:38,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647822257] [2023-01-28 10:39:38,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:38,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:39:38,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:38,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647822257] [2023-01-28 10:39:38,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647822257] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:38,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924698574] [2023-01-28 10:39:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:38,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:38,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:39:38,973 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) [2023-01-28 10:39:38,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 10:39:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:39,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 10:39:39,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:39:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:39:39,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:39:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:39:39,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924698574] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:39,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 10:39:39,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-01-28 10:39:39,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786188374] [2023-01-28 10:39:39,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:39:39,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:39:39,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:39,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:39:39,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 10:39:39,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 274 [2023-01-28 10:39:39,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 202 transitions, 3194 flow. Second operand has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 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) [2023-01-28 10:39:39,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:39,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 274 [2023-01-28 10:39:39,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:39,385 INFO L130 PetriNetUnfolder]: 1718/2489 cut-off events. [2023-01-28 10:39:39,385 INFO L131 PetriNetUnfolder]: For 26288/26611 co-relation queries the response was YES. [2023-01-28 10:39:39,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15963 conditions, 2489 events. 1718/2489 cut-off events. For 26288/26611 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 11148 event pairs, 505 based on Foata normal form. 320/2739 useless extension candidates. Maximal degree in co-relation 15912. Up to 1920 conditions per place. [2023-01-28 10:39:39,401 INFO L137 encePairwiseOnDemand]: 269/274 looper letters, 243 selfloop transitions, 13 changer transitions 0/275 dead transitions. [2023-01-28 10:39:39,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 275 transitions, 4786 flow [2023-01-28 10:39:39,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:39:39,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:39:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 573 transitions. [2023-01-28 10:39:39,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41824817518248175 [2023-01-28 10:39:39,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 573 transitions. [2023-01-28 10:39:39,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 573 transitions. [2023-01-28 10:39:39,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:39,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 573 transitions. [2023-01-28 10:39:39,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 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) [2023-01-28 10:39:39,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 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) [2023-01-28 10:39:39,406 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 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) [2023-01-28 10:39:39,406 INFO L175 Difference]: Start difference. First operand has 105 places, 202 transitions, 3194 flow. Second operand 5 states and 573 transitions. [2023-01-28 10:39:39,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 275 transitions, 4786 flow [2023-01-28 10:39:39,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 275 transitions, 4615 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-01-28 10:39:39,481 INFO L231 Difference]: Finished difference. Result has 105 places, 203 transitions, 3110 flow [2023-01-28 10:39:39,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=3065, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3110, PETRI_PLACES=105, PETRI_TRANSITIONS=203} [2023-01-28 10:39:39,481 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 73 predicate places. [2023-01-28 10:39:39,481 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 203 transitions, 3110 flow [2023-01-28 10:39:39,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 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) [2023-01-28 10:39:39,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:39,482 INFO L208 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] [2023-01-28 10:39:39,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 10:39:39,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:39,687 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:39:39,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:39,687 INFO L85 PathProgramCache]: Analyzing trace with hash 3263289, now seen corresponding path program 1 times [2023-01-28 10:39:39,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:39,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018478061] [2023-01-28 10:39:39,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:39,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:40,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:40,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:40,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018478061] [2023-01-28 10:39:40,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018478061] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:40,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629070059] [2023-01-28 10:39:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:40,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:40,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:39:40,072 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:39:40,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 10:39:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:40,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 60 conjunts are in the unsatisfiable core [2023-01-28 10:39:40,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:39:40,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 10:39:40,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:39:40,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:39:40,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 10:39:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:39:40,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:39:40,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:40,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629070059] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:39:40,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:39:40,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 5] total 15 [2023-01-28 10:39:40,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133855419] [2023-01-28 10:39:40,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:39:40,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 10:39:40,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:40,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 10:39:40,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-01-28 10:39:40,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 274 [2023-01-28 10:39:40,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 203 transitions, 3110 flow. Second operand has 17 states, 17 states have (on average 89.52941176470588) internal successors, (1522), 17 states have internal predecessors, (1522), 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) [2023-01-28 10:39:40,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:40,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 274 [2023-01-28 10:39:40,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:41,209 INFO L130 PetriNetUnfolder]: 2808/4087 cut-off events. [2023-01-28 10:39:41,210 INFO L131 PetriNetUnfolder]: For 35184/35377 co-relation queries the response was YES. [2023-01-28 10:39:41,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25510 conditions, 4087 events. 2808/4087 cut-off events. For 35184/35377 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 19427 event pairs, 415 based on Foata normal form. 167/4232 useless extension candidates. Maximal degree in co-relation 25459. Up to 2601 conditions per place. [2023-01-28 10:39:41,240 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 304 selfloop transitions, 124 changer transitions 1/443 dead transitions. [2023-01-28 10:39:41,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 443 transitions, 6977 flow [2023-01-28 10:39:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 10:39:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 10:39:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1270 transitions. [2023-01-28 10:39:41,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3565412689500281 [2023-01-28 10:39:41,243 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1270 transitions. [2023-01-28 10:39:41,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1270 transitions. [2023-01-28 10:39:41,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:41,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1270 transitions. [2023-01-28 10:39:41,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 97.6923076923077) internal successors, (1270), 13 states have internal predecessors, (1270), 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) [2023-01-28 10:39:41,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 274.0) internal successors, (3836), 14 states have internal predecessors, (3836), 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) [2023-01-28 10:39:41,249 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 274.0) internal successors, (3836), 14 states have internal predecessors, (3836), 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) [2023-01-28 10:39:41,249 INFO L175 Difference]: Start difference. First operand has 105 places, 203 transitions, 3110 flow. Second operand 13 states and 1270 transitions. [2023-01-28 10:39:41,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 443 transitions, 6977 flow [2023-01-28 10:39:41,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 443 transitions, 6940 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-01-28 10:39:41,375 INFO L231 Difference]: Finished difference. Result has 122 places, 295 transitions, 5023 flow [2023-01-28 10:39:41,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=3091, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5023, PETRI_PLACES=122, PETRI_TRANSITIONS=295} [2023-01-28 10:39:41,375 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 90 predicate places. [2023-01-28 10:39:41,376 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 295 transitions, 5023 flow [2023-01-28 10:39:41,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 89.52941176470588) internal successors, (1522), 17 states have internal predecessors, (1522), 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) [2023-01-28 10:39:41,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:41,376 INFO L208 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] [2023-01-28 10:39:41,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 10:39:41,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 10:39:41,583 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:39:41,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:41,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1941319685, now seen corresponding path program 1 times [2023-01-28 10:39:41,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:41,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528215623] [2023-01-28 10:39:41,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:41,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:39:42,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:42,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528215623] [2023-01-28 10:39:42,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528215623] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:42,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535787888] [2023-01-28 10:39:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:42,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:42,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:39:42,002 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:39:42,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 10:39:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:42,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 10:39:42,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:39:42,335 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:39:42,335 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 17 treesize of output 15 [2023-01-28 10:39:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:39:42,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:39:42,484 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:39:42,484 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 23 treesize of output 16 [2023-01-28 10:39:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:39:42,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535787888] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:39:42,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:39:42,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 10] total 26 [2023-01-28 10:39:42,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060513391] [2023-01-28 10:39:42,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:39:42,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 10:39:42,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:42,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 10:39:42,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2023-01-28 10:39:42,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 274 [2023-01-28 10:39:42,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 295 transitions, 5023 flow. Second operand has 28 states, 28 states have (on average 81.17857142857143) internal successors, (2273), 28 states have internal predecessors, (2273), 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) [2023-01-28 10:39:42,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:42,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 274 [2023-01-28 10:39:42,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:45,377 INFO L130 PetriNetUnfolder]: 5451/8012 cut-off events. [2023-01-28 10:39:45,378 INFO L131 PetriNetUnfolder]: For 85174/85174 co-relation queries the response was YES. [2023-01-28 10:39:45,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54672 conditions, 8012 events. 5451/8012 cut-off events. For 85174/85174 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 42715 event pairs, 420 based on Foata normal form. 4/8014 useless extension candidates. Maximal degree in co-relation 53139. Up to 4552 conditions per place. [2023-01-28 10:39:45,434 INFO L137 encePairwiseOnDemand]: 259/274 looper letters, 517 selfloop transitions, 375 changer transitions 9/901 dead transitions. [2023-01-28 10:39:45,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 901 transitions, 15005 flow [2023-01-28 10:39:45,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-01-28 10:39:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-01-28 10:39:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3174 transitions. [2023-01-28 10:39:45,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3217761557177616 [2023-01-28 10:39:45,442 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3174 transitions. [2023-01-28 10:39:45,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3174 transitions. [2023-01-28 10:39:45,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:45,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3174 transitions. [2023-01-28 10:39:45,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 88.16666666666667) internal successors, (3174), 36 states have internal predecessors, (3174), 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) [2023-01-28 10:39:45,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 274.0) internal successors, (10138), 37 states have internal predecessors, (10138), 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) [2023-01-28 10:39:45,466 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 274.0) internal successors, (10138), 37 states have internal predecessors, (10138), 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) [2023-01-28 10:39:45,466 INFO L175 Difference]: Start difference. First operand has 122 places, 295 transitions, 5023 flow. Second operand 36 states and 3174 transitions. [2023-01-28 10:39:45,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 901 transitions, 15005 flow [2023-01-28 10:39:45,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 901 transitions, 14823 flow, removed 29 selfloop flow, removed 2 redundant places. [2023-01-28 10:39:45,844 INFO L231 Difference]: Finished difference. Result has 170 places, 603 transitions, 11912 flow [2023-01-28 10:39:45,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=4936, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=11912, PETRI_PLACES=170, PETRI_TRANSITIONS=603} [2023-01-28 10:39:45,844 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 138 predicate places. [2023-01-28 10:39:45,844 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 603 transitions, 11912 flow [2023-01-28 10:39:45,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 81.17857142857143) internal successors, (2273), 28 states have internal predecessors, (2273), 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) [2023-01-28 10:39:45,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:45,845 INFO L208 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] [2023-01-28 10:39:45,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 10:39:46,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 10:39:46,049 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:39:46,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:46,050 INFO L85 PathProgramCache]: Analyzing trace with hash 246589533, now seen corresponding path program 2 times [2023-01-28 10:39:46,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:46,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940743060] [2023-01-28 10:39:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:46,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:46,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:46,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940743060] [2023-01-28 10:39:46,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940743060] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:46,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679903422] [2023-01-28 10:39:46,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:39:46,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:46,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:39:46,344 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:39:46,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 10:39:46,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:39:46,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:39:46,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-28 10:39:46,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:39:46,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 10:39:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:46,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:39:46,540 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:39:46,540 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 19 treesize of output 16 [2023-01-28 10:39:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:39:46,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679903422] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:39:46,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:39:46,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 11 [2023-01-28 10:39:46,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634962730] [2023-01-28 10:39:46,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:39:46,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 10:39:46,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:46,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 10:39:46,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-01-28 10:39:46,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 274 [2023-01-28 10:39:46,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 603 transitions, 11912 flow. Second operand has 13 states, 13 states have (on average 102.15384615384616) internal successors, (1328), 13 states have internal predecessors, (1328), 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) [2023-01-28 10:39:46,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:46,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 274 [2023-01-28 10:39:46,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:48,484 INFO L130 PetriNetUnfolder]: 7193/10612 cut-off events. [2023-01-28 10:39:48,484 INFO L131 PetriNetUnfolder]: For 168243/168713 co-relation queries the response was YES. [2023-01-28 10:39:48,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82501 conditions, 10612 events. 7193/10612 cut-off events. For 168243/168713 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 61372 event pairs, 786 based on Foata normal form. 354/10876 useless extension candidates. Maximal degree in co-relation 82293. Up to 6266 conditions per place. [2023-01-28 10:39:48,569 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 511 selfloop transitions, 368 changer transitions 1/905 dead transitions. [2023-01-28 10:39:48,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 905 transitions, 18562 flow [2023-01-28 10:39:48,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 10:39:48,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 10:39:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1234 transitions. [2023-01-28 10:39:48,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40942269409422694 [2023-01-28 10:39:48,571 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1234 transitions. [2023-01-28 10:39:48,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1234 transitions. [2023-01-28 10:39:48,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:48,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1234 transitions. [2023-01-28 10:39:48,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 112.18181818181819) internal successors, (1234), 11 states have internal predecessors, (1234), 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) [2023-01-28 10:39:48,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 274.0) internal successors, (3288), 12 states have internal predecessors, (3288), 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) [2023-01-28 10:39:48,575 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 274.0) internal successors, (3288), 12 states have internal predecessors, (3288), 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) [2023-01-28 10:39:48,575 INFO L175 Difference]: Start difference. First operand has 170 places, 603 transitions, 11912 flow. Second operand 11 states and 1234 transitions. [2023-01-28 10:39:48,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 905 transitions, 18562 flow [2023-01-28 10:39:49,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 905 transitions, 18110 flow, removed 225 selfloop flow, removed 1 redundant places. [2023-01-28 10:39:49,507 INFO L231 Difference]: Finished difference. Result has 185 places, 747 transitions, 15579 flow [2023-01-28 10:39:49,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=11598, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15579, PETRI_PLACES=185, PETRI_TRANSITIONS=747} [2023-01-28 10:39:49,507 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 153 predicate places. [2023-01-28 10:39:49,507 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 747 transitions, 15579 flow [2023-01-28 10:39:49,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 102.15384615384616) internal successors, (1328), 13 states have internal predecessors, (1328), 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) [2023-01-28 10:39:49,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:39:49,508 INFO L208 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] [2023-01-28 10:39:49,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 10:39:49,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 10:39:49,712 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:39:49,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:39:49,713 INFO L85 PathProgramCache]: Analyzing trace with hash 818684429, now seen corresponding path program 2 times [2023-01-28 10:39:49,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:39:49,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660456947] [2023-01-28 10:39:49,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:39:49,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:39:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:39:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:39:50,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:39:50,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660456947] [2023-01-28 10:39:50,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660456947] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:39:50,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244354209] [2023-01-28 10:39:50,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:39:50,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:39:50,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:39:50,386 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:39:50,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 10:39:50,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:39:50,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:39:50,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 10:39:50,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:39:50,668 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:39:50,669 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 17 treesize of output 15 [2023-01-28 10:39:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:39:50,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:39:50,918 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:39:50,919 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 23 treesize of output 16 [2023-01-28 10:39:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:39:51,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244354209] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:39:51,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:39:51,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 29 [2023-01-28 10:39:51,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752825545] [2023-01-28 10:39:51,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:39:51,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 10:39:51,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:39:51,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 10:39:51,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2023-01-28 10:39:51,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 274 [2023-01-28 10:39:51,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 747 transitions, 15579 flow. Second operand has 31 states, 31 states have (on average 71.03225806451613) internal successors, (2202), 31 states have internal predecessors, (2202), 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) [2023-01-28 10:39:51,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:39:51,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 274 [2023-01-28 10:39:51,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:39:57,565 INFO L130 PetriNetUnfolder]: 12880/19067 cut-off events. [2023-01-28 10:39:57,565 INFO L131 PetriNetUnfolder]: For 331470/331470 co-relation queries the response was YES. [2023-01-28 10:39:57,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154945 conditions, 19067 events. 12880/19067 cut-off events. For 331470/331470 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 119864 event pairs, 1424 based on Foata normal form. 9/19076 useless extension candidates. Maximal degree in co-relation 154692. Up to 9189 conditions per place. [2023-01-28 10:39:57,724 INFO L137 encePairwiseOnDemand]: 259/274 looper letters, 760 selfloop transitions, 1216 changer transitions 12/1988 dead transitions. [2023-01-28 10:39:57,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 1988 transitions, 39870 flow [2023-01-28 10:39:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-01-28 10:39:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-01-28 10:39:57,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 5859 transitions. [2023-01-28 10:39:57,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28135804840568573 [2023-01-28 10:39:57,731 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 5859 transitions. [2023-01-28 10:39:57,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 5859 transitions. [2023-01-28 10:39:57,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:39:57,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 5859 transitions. [2023-01-28 10:39:57,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 77.09210526315789) internal successors, (5859), 76 states have internal predecessors, (5859), 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) [2023-01-28 10:39:57,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 274.0) internal successors, (21098), 77 states have internal predecessors, (21098), 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) [2023-01-28 10:39:57,756 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 274.0) internal successors, (21098), 77 states have internal predecessors, (21098), 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) [2023-01-28 10:39:57,756 INFO L175 Difference]: Start difference. First operand has 185 places, 747 transitions, 15579 flow. Second operand 76 states and 5859 transitions. [2023-01-28 10:39:57,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 1988 transitions, 39870 flow [2023-01-28 10:39:59,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1988 transitions, 38677 flow, removed 403 selfloop flow, removed 2 redundant places. [2023-01-28 10:40:00,015 INFO L231 Difference]: Finished difference. Result has 289 places, 1566 transitions, 35700 flow [2023-01-28 10:40:00,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=15053, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=504, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=35700, PETRI_PLACES=289, PETRI_TRANSITIONS=1566} [2023-01-28 10:40:00,016 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 257 predicate places. [2023-01-28 10:40:00,016 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 1566 transitions, 35700 flow [2023-01-28 10:40:00,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 71.03225806451613) internal successors, (2202), 31 states have internal predecessors, (2202), 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) [2023-01-28 10:40:00,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:40:00,017 INFO L208 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] [2023-01-28 10:40:00,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-28 10:40:00,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 10:40:00,230 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:40:00,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:40:00,230 INFO L85 PathProgramCache]: Analyzing trace with hash 665140195, now seen corresponding path program 3 times [2023-01-28 10:40:00,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:40:00,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670297265] [2023-01-28 10:40:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:40:00,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:40:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:40:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:40:00,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:40:00,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670297265] [2023-01-28 10:40:00,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670297265] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:40:00,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743526433] [2023-01-28 10:40:00,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:40:00,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:40:00,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:40:00,798 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:40:00,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 10:40:00,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 10:40:00,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:40:00,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 61 conjunts are in the unsatisfiable core [2023-01-28 10:40:00,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:40:01,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:40:01,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 10:40:01,146 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:40:01,147 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 17 treesize of output 15 [2023-01-28 10:40:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:40:01,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:40:01,520 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:40:01,521 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 54 treesize of output 38 [2023-01-28 10:40:01,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-01-28 10:40:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:40:01,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743526433] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:40:01,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:40:01,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 32 [2023-01-28 10:40:01,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619228509] [2023-01-28 10:40:01,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:40:01,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 10:40:01,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:40:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 10:40:01,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=989, Unknown=2, NotChecked=0, Total=1122 [2023-01-28 10:40:01,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 274 [2023-01-28 10:40:01,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 1566 transitions, 35700 flow. Second operand has 34 states, 34 states have (on average 70.79411764705883) internal successors, (2407), 34 states have internal predecessors, (2407), 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) [2023-01-28 10:40:01,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:40:01,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 274 [2023-01-28 10:40:01,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:40:12,665 INFO L130 PetriNetUnfolder]: 16411/24255 cut-off events. [2023-01-28 10:40:12,665 INFO L131 PetriNetUnfolder]: For 522053/522053 co-relation queries the response was YES. [2023-01-28 10:40:12,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221910 conditions, 24255 events. 16411/24255 cut-off events. For 522053/522053 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 157504 event pairs, 1220 based on Foata normal form. 6/24261 useless extension candidates. Maximal degree in co-relation 221466. Up to 10730 conditions per place. [2023-01-28 10:40:12,970 INFO L137 encePairwiseOnDemand]: 257/274 looper letters, 745 selfloop transitions, 1855 changer transitions 12/2612 dead transitions. [2023-01-28 10:40:12,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 2612 transitions, 58363 flow [2023-01-28 10:40:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-01-28 10:40:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-01-28 10:40:12,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 5035 transitions. [2023-01-28 10:40:12,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2871236313868613 [2023-01-28 10:40:12,977 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 5035 transitions. [2023-01-28 10:40:12,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 5035 transitions. [2023-01-28 10:40:12,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:40:12,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 5035 transitions. [2023-01-28 10:40:12,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 78.671875) internal successors, (5035), 64 states have internal predecessors, (5035), 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) [2023-01-28 10:40:12,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 274.0) internal successors, (17810), 65 states have internal predecessors, (17810), 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) [2023-01-28 10:40:12,995 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 274.0) internal successors, (17810), 65 states have internal predecessors, (17810), 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) [2023-01-28 10:40:12,995 INFO L175 Difference]: Start difference. First operand has 289 places, 1566 transitions, 35700 flow. Second operand 64 states and 5035 transitions. [2023-01-28 10:40:12,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 2612 transitions, 58363 flow [2023-01-28 10:40:20,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 2612 transitions, 56308 flow, removed 950 selfloop flow, removed 5 redundant places. [2023-01-28 10:40:20,328 INFO L231 Difference]: Finished difference. Result has 377 places, 2234 transitions, 55044 flow [2023-01-28 10:40:20,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=34171, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=55044, PETRI_PLACES=377, PETRI_TRANSITIONS=2234} [2023-01-28 10:40:20,329 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 345 predicate places. [2023-01-28 10:40:20,329 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 2234 transitions, 55044 flow [2023-01-28 10:40:20,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 70.79411764705883) internal successors, (2407), 34 states have internal predecessors, (2407), 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) [2023-01-28 10:40:20,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:40:20,330 INFO L208 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] [2023-01-28 10:40:20,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 10:40:20,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 10:40:20,534 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:40:20,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:40:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1207527799, now seen corresponding path program 3 times [2023-01-28 10:40:20,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:40:20,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976613247] [2023-01-28 10:40:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:40:20,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:40:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:40:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:40:20,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:40:20,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976613247] [2023-01-28 10:40:20,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976613247] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:40:20,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239593349] [2023-01-28 10:40:20,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:40:20,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:40:20,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:40:20,844 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:40:20,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 10:40:20,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 10:40:20,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:40:20,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 52 conjunts are in the unsatisfiable core [2023-01-28 10:40:20,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:40:21,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:40:21,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 10:40:21,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 10:40:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:40:21,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:40:21,164 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_658 (Array Int Int))) (= c_~res1~0 (+ c_~res2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_658) c_~A~0.base) (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) c_~A~0.offset))))) is different from false [2023-01-28 10:40:21,168 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_658 (Array Int Int))) (= c_~res1~0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_658) c_~A~0.base) c_~A~0.offset) c_~res2~0))) is different from false [2023-01-28 10:40:21,178 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:40:21,180 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 46 treesize of output 34 [2023-01-28 10:40:21,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2023-01-28 10:40:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-01-28 10:40:21,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239593349] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:40:21,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:40:21,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2023-01-28 10:40:21,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354310021] [2023-01-28 10:40:21,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:40:21,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 10:40:21,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:40:21,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 10:40:21,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=311, Unknown=2, NotChecked=74, Total=462 [2023-01-28 10:40:21,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 274 [2023-01-28 10:40:21,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 2234 transitions, 55044 flow. Second operand has 22 states, 22 states have (on average 97.18181818181819) internal successors, (2138), 22 states have internal predecessors, (2138), 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) [2023-01-28 10:40:21,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:40:21,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 274 [2023-01-28 10:40:21,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:40:32,083 INFO L130 PetriNetUnfolder]: 16753/24793 cut-off events. [2023-01-28 10:40:32,083 INFO L131 PetriNetUnfolder]: For 728939/729671 co-relation queries the response was YES. [2023-01-28 10:40:32,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250507 conditions, 24793 events. 16753/24793 cut-off events. For 728939/729671 co-relation queries the response was YES. Maximal size of possible extension queue 1278. Compared 163375 event pairs, 1713 based on Foata normal form. 352/24903 useless extension candidates. Maximal degree in co-relation 250006. Up to 14651 conditions per place. [2023-01-28 10:40:32,587 INFO L137 encePairwiseOnDemand]: 265/274 looper letters, 1214 selfloop transitions, 1178 changer transitions 2/2449 dead transitions. [2023-01-28 10:40:32,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 2449 transitions, 63541 flow [2023-01-28 10:40:32,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 10:40:32,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 10:40:32,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1402 transitions. [2023-01-28 10:40:32,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935991016282987 [2023-01-28 10:40:32,589 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1402 transitions. [2023-01-28 10:40:32,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1402 transitions. [2023-01-28 10:40:32,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:40:32,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1402 transitions. [2023-01-28 10:40:32,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 107.84615384615384) internal successors, (1402), 13 states have internal predecessors, (1402), 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) [2023-01-28 10:40:32,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 274.0) internal successors, (3836), 14 states have internal predecessors, (3836), 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) [2023-01-28 10:40:32,592 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 274.0) internal successors, (3836), 14 states have internal predecessors, (3836), 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) [2023-01-28 10:40:32,593 INFO L175 Difference]: Start difference. First operand has 377 places, 2234 transitions, 55044 flow. Second operand 13 states and 1402 transitions. [2023-01-28 10:40:32,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 2449 transitions, 63541 flow [2023-01-28 10:40:45,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 2449 transitions, 61866 flow, removed 816 selfloop flow, removed 5 redundant places. [2023-01-28 10:40:45,598 INFO L231 Difference]: Finished difference. Result has 390 places, 2316 transitions, 58068 flow [2023-01-28 10:40:45,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=53511, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1087, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=58068, PETRI_PLACES=390, PETRI_TRANSITIONS=2316} [2023-01-28 10:40:45,600 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 358 predicate places. [2023-01-28 10:40:45,600 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 2316 transitions, 58068 flow [2023-01-28 10:40:45,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 97.18181818181819) internal successors, (2138), 22 states have internal predecessors, (2138), 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) [2023-01-28 10:40:45,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:40:45,601 INFO L208 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] [2023-01-28 10:40:45,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-01-28 10:40:45,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 10:40:45,801 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:40:45,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:40:45,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1758949043, now seen corresponding path program 4 times [2023-01-28 10:40:45,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:40:45,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424041309] [2023-01-28 10:40:45,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:40:45,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:40:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:40:46,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:40:46,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:40:46,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424041309] [2023-01-28 10:40:46,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424041309] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:40:46,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374523668] [2023-01-28 10:40:46,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 10:40:46,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:40:46,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:40:46,040 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:40:46,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 10:40:46,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 10:40:46,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:40:46,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-28 10:40:46,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:40:46,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 10:40:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:40:46,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:40:46,231 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:40:46,232 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 23 treesize of output 16 [2023-01-28 10:40:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:40:46,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374523668] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:40:46,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:40:46,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 11 [2023-01-28 10:40:46,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859302433] [2023-01-28 10:40:46,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:40:46,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 10:40:46,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:40:46,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 10:40:46,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-01-28 10:40:46,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 274 [2023-01-28 10:40:46,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 2316 transitions, 58068 flow. Second operand has 13 states, 13 states have (on average 102.15384615384616) internal successors, (1328), 13 states have internal predecessors, (1328), 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) [2023-01-28 10:40:46,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:40:46,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 274 [2023-01-28 10:40:46,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:40:58,545 INFO L130 PetriNetUnfolder]: 19717/29132 cut-off events. [2023-01-28 10:40:58,546 INFO L131 PetriNetUnfolder]: For 933011/934114 co-relation queries the response was YES. [2023-01-28 10:40:58,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298065 conditions, 29132 events. 19717/29132 cut-off events. For 933011/934114 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 196633 event pairs, 4793 based on Foata normal form. 558/29342 useless extension candidates. Maximal degree in co-relation 297513. Up to 23691 conditions per place. [2023-01-28 10:40:59,048 INFO L137 encePairwiseOnDemand]: 265/274 looper letters, 1931 selfloop transitions, 805 changer transitions 1/2792 dead transitions. [2023-01-28 10:40:59,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 2792 transitions, 74500 flow [2023-01-28 10:40:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 10:40:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 10:40:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1227 transitions. [2023-01-28 10:40:59,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.407100199071002 [2023-01-28 10:40:59,050 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1227 transitions. [2023-01-28 10:40:59,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1227 transitions. [2023-01-28 10:40:59,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:40:59,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1227 transitions. [2023-01-28 10:40:59,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 111.54545454545455) internal successors, (1227), 11 states have internal predecessors, (1227), 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) [2023-01-28 10:40:59,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 274.0) internal successors, (3288), 12 states have internal predecessors, (3288), 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) [2023-01-28 10:40:59,053 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 274.0) internal successors, (3288), 12 states have internal predecessors, (3288), 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) [2023-01-28 10:40:59,053 INFO L175 Difference]: Start difference. First operand has 390 places, 2316 transitions, 58068 flow. Second operand 11 states and 1227 transitions. [2023-01-28 10:40:59,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 2792 transitions, 74500 flow [2023-01-28 10:41:15,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 2792 transitions, 73290 flow, removed 77 selfloop flow, removed 3 redundant places. [2023-01-28 10:41:15,610 INFO L231 Difference]: Finished difference. Result has 403 places, 2602 transitions, 67072 flow [2023-01-28 10:41:15,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=57003, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=548, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=67072, PETRI_PLACES=403, PETRI_TRANSITIONS=2602} [2023-01-28 10:41:15,611 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 371 predicate places. [2023-01-28 10:41:15,611 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 2602 transitions, 67072 flow [2023-01-28 10:41:15,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 102.15384615384616) internal successors, (1328), 13 states have internal predecessors, (1328), 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) [2023-01-28 10:41:15,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:41:15,612 INFO L208 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] [2023-01-28 10:41:15,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 10:41:15,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:41:15,816 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:41:15,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:41:15,816 INFO L85 PathProgramCache]: Analyzing trace with hash -209660607, now seen corresponding path program 5 times [2023-01-28 10:41:15,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:41:15,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691260179] [2023-01-28 10:41:15,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:41:15,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:41:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:41:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:41:16,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:41:16,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691260179] [2023-01-28 10:41:16,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691260179] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:41:16,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911305466] [2023-01-28 10:41:16,052 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 10:41:16,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:41:16,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:41:16,053 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:41:16,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 10:41:16,144 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:41:16,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:41:16,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-28 10:41:16,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:41:16,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-01-28 10:41:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:41:16,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:41:16,274 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:41:16,274 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 23 treesize of output 16 [2023-01-28 10:41:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:41:16,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911305466] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:41:16,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:41:16,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 12 [2023-01-28 10:41:16,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888687339] [2023-01-28 10:41:16,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:41:16,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 10:41:16,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:41:16,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 10:41:16,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-01-28 10:41:16,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 274 [2023-01-28 10:41:16,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 2602 transitions, 67072 flow. Second operand has 14 states, 14 states have (on average 101.85714285714286) internal successors, (1426), 14 states have internal predecessors, (1426), 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) [2023-01-28 10:41:16,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:41:16,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 274 [2023-01-28 10:41:16,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:41:30,148 INFO L130 PetriNetUnfolder]: 20363/30059 cut-off events. [2023-01-28 10:41:30,149 INFO L131 PetriNetUnfolder]: For 975206/976288 co-relation queries the response was YES. [2023-01-28 10:41:30,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314847 conditions, 30059 events. 20363/30059 cut-off events. For 975206/976288 co-relation queries the response was YES. Maximal size of possible extension queue 1574. Compared 203597 event pairs, 5544 based on Foata normal form. 574/30242 useless extension candidates. Maximal degree in co-relation 314280. Up to 27584 conditions per place. [2023-01-28 10:41:30,631 INFO L137 encePairwiseOnDemand]: 265/274 looper letters, 2195 selfloop transitions, 580 changer transitions 1/2831 dead transitions. [2023-01-28 10:41:30,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 2831 transitions, 77135 flow [2023-01-28 10:41:30,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 10:41:30,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 10:41:30,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1205 transitions. [2023-01-28 10:41:30,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3998009289980093 [2023-01-28 10:41:30,632 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1205 transitions. [2023-01-28 10:41:30,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1205 transitions. [2023-01-28 10:41:30,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:41:30,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1205 transitions. [2023-01-28 10:41:30,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 109.54545454545455) internal successors, (1205), 11 states have internal predecessors, (1205), 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) [2023-01-28 10:41:30,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 274.0) internal successors, (3288), 12 states have internal predecessors, (3288), 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) [2023-01-28 10:41:30,636 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 274.0) internal successors, (3288), 12 states have internal predecessors, (3288), 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) [2023-01-28 10:41:30,636 INFO L175 Difference]: Start difference. First operand has 403 places, 2602 transitions, 67072 flow. Second operand 11 states and 1205 transitions. [2023-01-28 10:41:30,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 2831 transitions, 77135 flow [2023-01-28 10:41:47,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 2831 transitions, 75959 flow, removed 343 selfloop flow, removed 3 redundant places. [2023-01-28 10:41:48,044 INFO L231 Difference]: Finished difference. Result has 413 places, 2711 transitions, 69927 flow [2023-01-28 10:41:48,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=65896, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=490, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2046, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=69927, PETRI_PLACES=413, PETRI_TRANSITIONS=2711} [2023-01-28 10:41:48,046 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 381 predicate places. [2023-01-28 10:41:48,046 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 2711 transitions, 69927 flow [2023-01-28 10:41:48,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 101.85714285714286) internal successors, (1426), 14 states have internal predecessors, (1426), 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) [2023-01-28 10:41:48,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:41:48,046 INFO L208 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] [2023-01-28 10:41:48,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-28 10:41:48,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:41:48,247 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:41:48,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:41:48,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1100337783, now seen corresponding path program 4 times [2023-01-28 10:41:48,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:41:48,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540603402] [2023-01-28 10:41:48,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:41:48,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:41:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:41:48,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:41:48,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:41:48,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540603402] [2023-01-28 10:41:48,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540603402] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:41:48,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363151299] [2023-01-28 10:41:48,600 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 10:41:48,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:41:48,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:41:48,613 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:41:48,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 10:41:48,710 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 10:41:48,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:41:48,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 10:41:48,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:41:48,959 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:41:48,959 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 17 treesize of output 15 [2023-01-28 10:41:48,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:41:48,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:41:49,122 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:41:49,123 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 23 treesize of output 16 [2023-01-28 10:41:49,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:41:49,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363151299] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:41:49,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:41:49,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 10] total 27 [2023-01-28 10:41:49,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507119860] [2023-01-28 10:41:49,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:41:49,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 10:41:49,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:41:49,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 10:41:49,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2023-01-28 10:41:49,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 274 [2023-01-28 10:41:49,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 2711 transitions, 69927 flow. Second operand has 29 states, 29 states have (on average 81.0) internal successors, (2349), 29 states have internal predecessors, (2349), 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) [2023-01-28 10:41:49,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:41:49,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 274 [2023-01-28 10:41:49,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:42:07,008 INFO L130 PetriNetUnfolder]: 22523/33297 cut-off events. [2023-01-28 10:42:07,009 INFO L131 PetriNetUnfolder]: For 1009333/1009333 co-relation queries the response was YES. [2023-01-28 10:42:07,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346535 conditions, 33297 events. 22523/33297 cut-off events. For 1009333/1009333 co-relation queries the response was YES. Maximal size of possible extension queue 1674. Compared 226853 event pairs, 4962 based on Foata normal form. 4/33301 useless extension candidates. Maximal degree in co-relation 345956. Up to 24600 conditions per place. [2023-01-28 10:42:07,705 INFO L137 encePairwiseOnDemand]: 261/274 looper letters, 1754 selfloop transitions, 1436 changer transitions 9/3199 dead transitions. [2023-01-28 10:42:07,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 3199 transitions, 86309 flow [2023-01-28 10:42:07,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-01-28 10:42:07,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-01-28 10:42:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3715 transitions. [2023-01-28 10:42:07,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153114921066033 [2023-01-28 10:42:07,709 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3715 transitions. [2023-01-28 10:42:07,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3715 transitions. [2023-01-28 10:42:07,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:42:07,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3715 transitions. [2023-01-28 10:42:07,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 86.3953488372093) internal successors, (3715), 43 states have internal predecessors, (3715), 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) [2023-01-28 10:42:07,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 274.0) internal successors, (12056), 44 states have internal predecessors, (12056), 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) [2023-01-28 10:42:07,719 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 274.0) internal successors, (12056), 44 states have internal predecessors, (12056), 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) [2023-01-28 10:42:07,719 INFO L175 Difference]: Start difference. First operand has 413 places, 2711 transitions, 69927 flow. Second operand 43 states and 3715 transitions. [2023-01-28 10:42:07,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 3199 transitions, 86309 flow [2023-01-28 10:42:29,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 3199 transitions, 85047 flow, removed 289 selfloop flow, removed 6 redundant places. [2023-01-28 10:42:29,338 INFO L231 Difference]: Finished difference. Result has 463 places, 2999 transitions, 81530 flow [2023-01-28 10:42:29,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=68826, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=81530, PETRI_PLACES=463, PETRI_TRANSITIONS=2999} [2023-01-28 10:42:29,340 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 431 predicate places. [2023-01-28 10:42:29,341 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 2999 transitions, 81530 flow [2023-01-28 10:42:29,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 81.0) internal successors, (2349), 29 states have internal predecessors, (2349), 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) [2023-01-28 10:42:29,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:42:29,341 INFO L208 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] [2023-01-28 10:42:29,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-01-28 10:42:29,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:42:29,545 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:42:29,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:42:29,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1925660755, now seen corresponding path program 6 times [2023-01-28 10:42:29,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:42:29,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613394438] [2023-01-28 10:42:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:42:29,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:42:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:42:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:42:29,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:42:29,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613394438] [2023-01-28 10:42:29,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613394438] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:42:29,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021276123] [2023-01-28 10:42:29,812 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 10:42:29,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:42:29,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:42:29,813 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:42:29,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 10:42:29,920 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 10:42:29,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:42:29,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-28 10:42:29,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:42:30,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:42:30,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 10:42:30,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 10:42:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:42:30,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:42:30,157 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:42:30,158 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 54 treesize of output 38 [2023-01-28 10:42:30,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-01-28 10:42:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:42:30,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021276123] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:42:30,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:42:30,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-01-28 10:42:30,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341107286] [2023-01-28 10:42:30,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:42:30,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 10:42:30,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:42:30,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 10:42:30,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=410, Unknown=1, NotChecked=0, Total=506 [2023-01-28 10:42:30,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 274 [2023-01-28 10:42:30,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 2999 transitions, 81530 flow. Second operand has 23 states, 23 states have (on average 97.21739130434783) internal successors, (2236), 23 states have internal predecessors, (2236), 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) [2023-01-28 10:42:30,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:42:30,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 274 [2023-01-28 10:42:30,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:42:48,761 INFO L130 PetriNetUnfolder]: 23882/35299 cut-off events. [2023-01-28 10:42:48,761 INFO L131 PetriNetUnfolder]: For 1301011/1302196 co-relation queries the response was YES. [2023-01-28 10:42:49,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386896 conditions, 35299 events. 23882/35299 cut-off events. For 1301011/1302196 co-relation queries the response was YES. Maximal size of possible extension queue 1856. Compared 244923 event pairs, 5438 based on Foata normal form. 625/35543 useless extension candidates. Maximal degree in co-relation 386112. Up to 27997 conditions per place. [2023-01-28 10:42:49,321 INFO L137 encePairwiseOnDemand]: 266/274 looper letters, 2342 selfloop transitions, 911 changer transitions 1/3314 dead transitions. [2023-01-28 10:42:49,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 3314 transitions, 95411 flow [2023-01-28 10:42:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 10:42:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 10:42:49,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1277 transitions. [2023-01-28 10:42:49,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38838199513381993 [2023-01-28 10:42:49,323 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1277 transitions. [2023-01-28 10:42:49,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1277 transitions. [2023-01-28 10:42:49,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:42:49,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1277 transitions. [2023-01-28 10:42:49,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 106.41666666666667) internal successors, (1277), 12 states have internal predecessors, (1277), 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) [2023-01-28 10:42:49,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 274.0) internal successors, (3562), 13 states have internal predecessors, (3562), 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) [2023-01-28 10:42:49,326 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 274.0) internal successors, (3562), 13 states have internal predecessors, (3562), 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) [2023-01-28 10:42:49,326 INFO L175 Difference]: Start difference. First operand has 463 places, 2999 transitions, 81530 flow. Second operand 12 states and 1277 transitions. [2023-01-28 10:42:49,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 3314 transitions, 95411 flow [2023-01-28 10:43:16,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 3314 transitions, 94373 flow, removed 346 selfloop flow, removed 6 redundant places. [2023-01-28 10:43:16,209 INFO L231 Difference]: Finished difference. Result has 474 places, 3162 transitions, 87596 flow [2023-01-28 10:43:16,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=80614, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=774, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=87596, PETRI_PLACES=474, PETRI_TRANSITIONS=3162} [2023-01-28 10:43:16,211 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 442 predicate places. [2023-01-28 10:43:16,211 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 3162 transitions, 87596 flow [2023-01-28 10:43:16,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 97.21739130434783) internal successors, (2236), 23 states have internal predecessors, (2236), 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) [2023-01-28 10:43:16,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:43:16,212 INFO L208 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] [2023-01-28 10:43:16,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 10:43:16,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:43:16,412 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:43:16,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:43:16,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1421372669, now seen corresponding path program 5 times [2023-01-28 10:43:16,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:43:16,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756592846] [2023-01-28 10:43:16,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:43:16,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:43:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:43:16,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:43:16,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:43:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756592846] [2023-01-28 10:43:16,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756592846] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:43:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821132088] [2023-01-28 10:43:16,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 10:43:16,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:43:16,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:43:16,782 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:43:16,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 10:43:16,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:43:16,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:43:16,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 57 conjunts are in the unsatisfiable core [2023-01-28 10:43:16,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:43:17,092 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:43:17,094 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:43:17,094 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 17 treesize of output 10 [2023-01-28 10:43:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:43:17,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:43:17,186 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:43:17,186 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 23 treesize of output 16 [2023-01-28 10:43:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:43:17,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821132088] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:43:17,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:43:17,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 26 [2023-01-28 10:43:17,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719680315] [2023-01-28 10:43:17,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:43:17,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 10:43:17,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:43:17,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 10:43:17,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2023-01-28 10:43:17,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 274 [2023-01-28 10:43:17,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 3162 transitions, 87596 flow. Second operand has 28 states, 28 states have (on average 81.07142857142857) internal successors, (2270), 28 states have internal predecessors, (2270), 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) [2023-01-28 10:43:17,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:43:17,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 274 [2023-01-28 10:43:17,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:43:56,902 INFO L130 PetriNetUnfolder]: 40359/61115 cut-off events. [2023-01-28 10:43:56,903 INFO L131 PetriNetUnfolder]: For 2324797/2324797 co-relation queries the response was YES. [2023-01-28 10:43:58,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663920 conditions, 61115 events. 40359/61115 cut-off events. For 2324797/2324797 co-relation queries the response was YES. Maximal size of possible extension queue 3148. Compared 475029 event pairs, 3384 based on Foata normal form. 11/61126 useless extension candidates. Maximal degree in co-relation 663154. Up to 18258 conditions per place. [2023-01-28 10:43:58,814 INFO L137 encePairwiseOnDemand]: 257/274 looper letters, 2631 selfloop transitions, 3595 changer transitions 20/6246 dead transitions. [2023-01-28 10:43:58,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 6246 transitions, 183469 flow [2023-01-28 10:43:58,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-01-28 10:43:58,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-01-28 10:43:58,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 4324 transitions. [2023-01-28 10:43:58,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32206167138388203 [2023-01-28 10:43:58,819 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 4324 transitions. [2023-01-28 10:43:58,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 4324 transitions. [2023-01-28 10:43:58,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:43:58,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 4324 transitions. [2023-01-28 10:43:58,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 88.24489795918367) internal successors, (4324), 49 states have internal predecessors, (4324), 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) [2023-01-28 10:43:58,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 274.0) internal successors, (13700), 50 states have internal predecessors, (13700), 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) [2023-01-28 10:43:58,833 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 274.0) internal successors, (13700), 50 states have internal predecessors, (13700), 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) [2023-01-28 10:43:58,833 INFO L175 Difference]: Start difference. First operand has 474 places, 3162 transitions, 87596 flow. Second operand 49 states and 4324 transitions. [2023-01-28 10:43:58,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 6246 transitions, 183469 flow [2023-01-28 10:45:11,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 6246 transitions, 181650 flow, removed 718 selfloop flow, removed 2 redundant places. [2023-01-28 10:45:11,645 INFO L231 Difference]: Finished difference. Result has 535 places, 5085 transitions, 158215 flow [2023-01-28 10:45:11,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=86634, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1963, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=802, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=158215, PETRI_PLACES=535, PETRI_TRANSITIONS=5085} [2023-01-28 10:45:11,647 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 503 predicate places. [2023-01-28 10:45:11,647 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 5085 transitions, 158215 flow [2023-01-28 10:45:11,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 81.07142857142857) internal successors, (2270), 28 states have internal predecessors, (2270), 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) [2023-01-28 10:45:11,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:45:11,648 INFO L208 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] [2023-01-28 10:45:11,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-01-28 10:45:11,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:45:11,848 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:45:11,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:45:11,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2024277337, now seen corresponding path program 7 times [2023-01-28 10:45:11,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:45:11,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310132083] [2023-01-28 10:45:11,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:45:11,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:45:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:45:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:45:12,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:45:12,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310132083] [2023-01-28 10:45:12,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310132083] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:45:12,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81067762] [2023-01-28 10:45:12,133 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 10:45:12,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:45:12,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:45:12,134 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:45:12,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 10:45:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:45:12,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 62 conjunts are in the unsatisfiable core [2023-01-28 10:45:12,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:45:12,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 10:45:12,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:45:12,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:45:12,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:45:12,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 10:45:12,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 10:45:12,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:45:12,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:45:12,481 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_928 (Array Int Int))) (= c_~res1~0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_928) c_~A~0.base) (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) c_~A~0.offset)) c_~res2~0))) is different from false [2023-01-28 10:45:12,486 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_928 (Array Int Int))) (= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_928) c_~A~0.base) (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) c_~A~0.offset)) c_~res2~0) (+ (select (select |c_#memory_int| c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) c_~res1~0))) is different from false [2023-01-28 10:45:12,490 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_928 (Array Int Int))) (= (+ c_~res2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_928) c_~A~0.base) c_~A~0.offset)) (+ (select (select |c_#memory_int| c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) c_~res1~0))) is different from false [2023-01-28 10:45:12,515 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_928 (Array Int Int)) (v_ArrVal_927 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_927))) (= (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) c_~res1~0) (+ c_~res2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_928) c_~A~0.base) c_~A~0.offset))))) is different from false [2023-01-28 10:45:12,522 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_926 (Array Int Int)) (v_ArrVal_928 (Array Int Int)) (v_ArrVal_927 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_926) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_927))) (= (+ c_~res1~0 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (+ c_~res2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_928) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2023-01-28 10:45:12,528 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:45:12,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 43 [2023-01-28 10:45:12,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10294 treesize of output 9654 [2023-01-28 10:45:12,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2023-01-28 10:45:12,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2023-01-28 10:45:12,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2023-01-28 10:45:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-01-28 10:45:12,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81067762] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:45:12,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:45:12,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 24 [2023-01-28 10:45:12,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583772996] [2023-01-28 10:45:12,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:45:12,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 10:45:12,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:45:12,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 10:45:12,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=338, Unknown=8, NotChecked=210, Total=650 [2023-01-28 10:45:12,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 274 [2023-01-28 10:45:12,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 5085 transitions, 158215 flow. Second operand has 26 states, 26 states have (on average 85.8076923076923) internal successors, (2231), 26 states have internal predecessors, (2231), 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) [2023-01-28 10:45:12,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:45:12,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 274 [2023-01-28 10:45:12,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:45:13,376 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_928 (Array Int Int))) (= (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) c_~res1~0) (+ c_~res2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_928) c_~A~0.base) c_~A~0.offset)))) (= c_~res2~0 c_~res1~0) (= c_~res1~0 |c_thread2Thread1of1ForFork2_~tmp~1#1|)) is different from false [2023-01-28 10:46:14,926 INFO L130 PetriNetUnfolder]: 42628/64703 cut-off events. [2023-01-28 10:46:14,926 INFO L131 PetriNetUnfolder]: For 3126813/3129892 co-relation queries the response was YES. [2023-01-28 10:46:16,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772517 conditions, 64703 events. 42628/64703 cut-off events. For 3126813/3129892 co-relation queries the response was YES. Maximal size of possible extension queue 3556. Compared 511105 event pairs, 9531 based on Foata normal form. 1593/65625 useless extension candidates. Maximal degree in co-relation 772000. Up to 54232 conditions per place. [2023-01-28 10:46:16,950 INFO L137 encePairwiseOnDemand]: 254/274 looper letters, 4221 selfloop transitions, 1594 changer transitions 2/5915 dead transitions. [2023-01-28 10:46:16,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 5915 transitions, 193403 flow [2023-01-28 10:46:16,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 10:46:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 10:46:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1520 transitions. [2023-01-28 10:46:16,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467153284671533 [2023-01-28 10:46:16,952 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1520 transitions. [2023-01-28 10:46:16,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1520 transitions. [2023-01-28 10:46:16,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:46:16,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1520 transitions. [2023-01-28 10:46:16,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 95.0) internal successors, (1520), 16 states have internal predecessors, (1520), 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) [2023-01-28 10:46:16,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 274.0) internal successors, (4658), 17 states have internal predecessors, (4658), 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) [2023-01-28 10:46:16,967 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 274.0) internal successors, (4658), 17 states have internal predecessors, (4658), 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) [2023-01-28 10:46:16,967 INFO L175 Difference]: Start difference. First operand has 535 places, 5085 transitions, 158215 flow. Second operand 16 states and 1520 transitions. [2023-01-28 10:46:16,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 5915 transitions, 193403 flow [2023-01-28 10:48:03,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 5915 transitions, 189950 flow, removed 1220 selfloop flow, removed 24 redundant places. [2023-01-28 10:48:03,353 INFO L231 Difference]: Finished difference. Result has 535 places, 5642 transitions, 177489 flow [2023-01-28 10:48:03,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=155364, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1059, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=177489, PETRI_PLACES=535, PETRI_TRANSITIONS=5642} [2023-01-28 10:48:03,357 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 503 predicate places. [2023-01-28 10:48:03,357 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 5642 transitions, 177489 flow [2023-01-28 10:48:03,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 85.8076923076923) internal successors, (2231), 26 states have internal predecessors, (2231), 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) [2023-01-28 10:48:03,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:48:03,358 INFO L208 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] [2023-01-28 10:48:03,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 10:48:03,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:48:03,558 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:48:03,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:48:03,559 INFO L85 PathProgramCache]: Analyzing trace with hash -776350493, now seen corresponding path program 8 times [2023-01-28 10:48:03,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:48:03,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199116005] [2023-01-28 10:48:03,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:48:03,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:48:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:48:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:48:03,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:48:03,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199116005] [2023-01-28 10:48:03,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199116005] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:48:03,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758216993] [2023-01-28 10:48:03,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:48:03,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:48:03,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:48:03,793 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:48:03,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 10:48:03,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:48:03,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:48:03,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-28 10:48:03,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:48:04,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:48:04,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 10:48:04,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 10:48:04,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:48:04,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:48:04,121 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:48:04,121 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 54 treesize of output 38 [2023-01-28 10:48:04,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-01-28 10:48:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:48:04,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758216993] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:48:04,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:48:04,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-01-28 10:48:04,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116653048] [2023-01-28 10:48:04,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:48:04,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 10:48:04,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:48:04,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 10:48:04,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=370, Unknown=1, NotChecked=0, Total=462 [2023-01-28 10:48:04,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 274 [2023-01-28 10:48:04,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 5642 transitions, 177489 flow. Second operand has 22 states, 22 states have (on average 97.0909090909091) internal successors, (2136), 22 states have internal predecessors, (2136), 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) [2023-01-28 10:48:04,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:48:04,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 274 [2023-01-28 10:48:04,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:49:27,012 INFO L130 PetriNetUnfolder]: 43317/65800 cut-off events. [2023-01-28 10:49:27,012 INFO L131 PetriNetUnfolder]: For 3154877/3158299 co-relation queries the response was YES. [2023-01-28 10:49:28,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816095 conditions, 65800 events. 43317/65800 cut-off events. For 3154877/3158299 co-relation queries the response was YES. Maximal size of possible extension queue 3624. Compared 521387 event pairs, 9461 based on Foata normal form. 1571/66739 useless extension candidates. Maximal degree in co-relation 814828. Up to 52572 conditions per place. [2023-01-28 10:49:29,101 INFO L137 encePairwiseOnDemand]: 266/274 looper letters, 4253 selfloop transitions, 1667 changer transitions 2/6020 dead transitions. [2023-01-28 10:49:29,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 6020 transitions, 199207 flow [2023-01-28 10:49:29,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 10:49:29,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 10:49:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1394 transitions. [2023-01-28 10:49:29,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39135317237507017 [2023-01-28 10:49:29,103 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1394 transitions. [2023-01-28 10:49:29,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1394 transitions. [2023-01-28 10:49:29,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:49:29,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1394 transitions. [2023-01-28 10:49:29,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 107.23076923076923) internal successors, (1394), 13 states have internal predecessors, (1394), 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) [2023-01-28 10:49:29,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 274.0) internal successors, (3836), 14 states have internal predecessors, (3836), 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) [2023-01-28 10:49:29,106 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 274.0) internal successors, (3836), 14 states have internal predecessors, (3836), 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) [2023-01-28 10:49:29,106 INFO L175 Difference]: Start difference. First operand has 535 places, 5642 transitions, 177489 flow. Second operand 13 states and 1394 transitions. [2023-01-28 10:49:29,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 6020 transitions, 199207 flow [2023-01-28 10:51:15,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 6020 transitions, 197792 flow, removed 705 selfloop flow, removed 2 redundant places. [2023-01-28 10:51:15,323 INFO L231 Difference]: Finished difference. Result has 548 places, 5722 transitions, 183148 flow [2023-01-28 10:51:15,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=176158, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1591, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3996, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=183148, PETRI_PLACES=548, PETRI_TRANSITIONS=5722} [2023-01-28 10:51:15,327 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 516 predicate places. [2023-01-28 10:51:15,327 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 5722 transitions, 183148 flow [2023-01-28 10:51:15,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 97.0909090909091) internal successors, (2136), 22 states have internal predecessors, (2136), 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) [2023-01-28 10:51:15,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:51:15,327 INFO L208 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] [2023-01-28 10:51:15,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 10:51:15,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-01-28 10:51:15,532 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:51:15,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:51:15,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1171616155, now seen corresponding path program 9 times [2023-01-28 10:51:15,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:51:15,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389932243] [2023-01-28 10:51:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:51:15,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:51:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:51:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:51:15,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:51:15,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389932243] [2023-01-28 10:51:15,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389932243] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:51:15,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147899465] [2023-01-28 10:51:15,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:51:15,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:51:15,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:51:15,809 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:51:15,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 10:51:15,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 10:51:15,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:51:15,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 52 conjunts are in the unsatisfiable core [2023-01-28 10:51:15,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:51:16,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:51:16,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 10:51:16,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-01-28 10:51:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:51:16,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:51:16,158 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1018 (Array Int Int))) (= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1018) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) c_~res1~0) |c_thread2Thread1of1ForFork2_~tmp~1#1|)) is different from false [2023-01-28 10:51:16,163 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:51:16,164 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 54 treesize of output 38 [2023-01-28 10:51:16,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-01-28 10:51:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:51:16,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147899465] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:51:16,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:51:16,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-01-28 10:51:16,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130041477] [2023-01-28 10:51:16,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:51:16,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 10:51:16,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:51:16,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 10:51:16,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=373, Unknown=2, NotChecked=40, Total=506 [2023-01-28 10:51:16,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 274 [2023-01-28 10:51:16,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 5722 transitions, 183148 flow. Second operand has 23 states, 23 states have (on average 97.17391304347827) internal successors, (2235), 23 states have internal predecessors, (2235), 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) [2023-01-28 10:51:16,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:51:16,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 274 [2023-01-28 10:51:16,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:52:38,130 INFO L130 PetriNetUnfolder]: 43938/66691 cut-off events. [2023-01-28 10:52:38,131 INFO L131 PetriNetUnfolder]: For 3223898/3227395 co-relation queries the response was YES. [2023-01-28 10:52:40,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833986 conditions, 66691 events. 43938/66691 cut-off events. For 3223898/3227395 co-relation queries the response was YES. Maximal size of possible extension queue 3661. Compared 529165 event pairs, 10894 based on Foata normal form. 1724/67665 useless extension candidates. Maximal degree in co-relation 832695. Up to 61883 conditions per place. [2023-01-28 10:52:40,428 INFO L137 encePairwiseOnDemand]: 266/274 looper letters, 4835 selfloop transitions, 1056 changer transitions 1/5990 dead transitions. [2023-01-28 10:52:40,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 5990 transitions, 202695 flow [2023-01-28 10:52:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 10:52:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 10:52:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1160 transitions. [2023-01-28 10:52:40,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384870603848706 [2023-01-28 10:52:40,430 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1160 transitions. [2023-01-28 10:52:40,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1160 transitions. [2023-01-28 10:52:40,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:52:40,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1160 transitions. [2023-01-28 10:52:40,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 105.45454545454545) internal successors, (1160), 11 states have internal predecessors, (1160), 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) [2023-01-28 10:52:40,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 274.0) internal successors, (3288), 12 states have internal predecessors, (3288), 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) [2023-01-28 10:52:40,433 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 274.0) internal successors, (3288), 12 states have internal predecessors, (3288), 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) [2023-01-28 10:52:40,433 INFO L175 Difference]: Start difference. First operand has 548 places, 5722 transitions, 183148 flow. Second operand 11 states and 1160 transitions. [2023-01-28 10:52:40,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 5990 transitions, 202695 flow Received shutdown request... [2023-01-28 10:52:55,885 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 10:52:55,934 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 [2023-01-28 10:52:56,107 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 10:52:56,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-28 10:52:56,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-01-28 10:52:56,313 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 10:52:56,314 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 10:52:56,314 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 10:52:56,314 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 10:52:56,314 INFO L445 BasicCegarLoop]: Path program histogram: [9, 6, 5, 1, 1, 1, 1, 1] [2023-01-28 10:52:56,318 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 10:52:56,318 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 10:52:56,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 10:52:56 BasicIcfg [2023-01-28 10:52:56,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 10:52:56,320 INFO L158 Benchmark]: Toolchain (without parser) took 809815.03ms. Allocated memory was 369.1MB in the beginning and 8.1GB in the end (delta: 7.7GB). Free memory was 311.3MB in the beginning and 5.7GB in the end (delta: -5.4GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. [2023-01-28 10:52:56,320 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 369.1MB. Free memory is still 316.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 10:52:56,320 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.11ms. Allocated memory is still 369.1MB. Free memory was 311.0MB in the beginning and 299.3MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 10:52:56,321 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.30ms. Allocated memory is still 369.1MB. Free memory was 299.3MB in the beginning and 297.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 10:52:56,321 INFO L158 Benchmark]: Boogie Preprocessor took 22.82ms. Allocated memory is still 369.1MB. Free memory was 296.9MB in the beginning and 295.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 10:52:56,321 INFO L158 Benchmark]: RCFGBuilder took 549.11ms. Allocated memory was 369.1MB in the beginning and 543.2MB in the end (delta: 174.1MB). Free memory was 295.4MB in the beginning and 491.5MB in the end (delta: -196.1MB). Peak memory consumption was 23.6MB. Max. memory is 16.0GB. [2023-01-28 10:52:56,323 INFO L158 Benchmark]: TraceAbstraction took 809038.30ms. Allocated memory was 543.2MB in the beginning and 8.1GB in the end (delta: 7.6GB). Free memory was 491.5MB in the beginning and 5.7GB in the end (delta: -5.2GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. [2023-01-28 10:52:56,327 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 369.1MB. Free memory is still 316.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 172.11ms. Allocated memory is still 369.1MB. Free memory was 311.0MB in the beginning and 299.3MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.30ms. Allocated memory is still 369.1MB. Free memory was 299.3MB in the beginning and 297.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.82ms. Allocated memory is still 369.1MB. Free memory was 296.9MB in the beginning and 295.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 549.11ms. Allocated memory was 369.1MB in the beginning and 543.2MB in the end (delta: 174.1MB). Free memory was 295.4MB in the beginning and 491.5MB in the end (delta: -196.1MB). Peak memory consumption was 23.6MB. Max. memory is 16.0GB. * TraceAbstraction took 809038.30ms. Allocated memory was 543.2MB in the beginning and 8.1GB in the end (delta: 7.6GB). Free memory was 491.5MB in the beginning and 5.7GB in the end (delta: -5.2GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 132 PlacesBefore, 32 PlacesAfterwards, 134 TransitionsBefore, 26 TransitionsAfterwards, 1518 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 127 TotalNumberOfCompositions, 2063 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1791, independent: 1743, independent conditional: 0, independent unconditional: 1743, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 811, independent: 799, independent conditional: 0, independent unconditional: 799, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1791, independent: 944, independent conditional: 0, independent unconditional: 944, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 811, unknown conditional: 0, unknown unconditional: 811] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 169 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 808.9s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 785.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4116 SdHoareTripleChecker+Valid, 9.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4116 mSDsluCounter, 1184 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1526 IncrementalHoareTripleChecker+Unchecked, 1048 mSDsCounter, 247 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20628 IncrementalHoareTripleChecker+Invalid, 22401 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 247 mSolverCounterUnsat, 136 mSDtfsCounter, 20628 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1435 GetRequests, 708 SyntacticMatches, 27 SemanticMatches, 700 ConstructedPredicates, 9 IntricatePredicates, 3 DeprecatedPredicates, 8431 ImplicationChecksByTransitivity, 11.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183148occurred in iteration=24, InterpolantAutomatonStates: 457, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 1067 NumberOfCodeBlocks, 1067 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 1491 ConstructedInterpolants, 25 QuantifiedInterpolants, 11984 SizeOfPredicates, 392 NumberOfNonLiveVariables, 5215 ConjunctsInSsa, 813 ConjunctsInUnsatCore, 67 InterpolantComputations, 10 PerfectInterpolantSequences, 58/171 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