/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 BEFORE -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 04:17:51,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 04:17:51,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 04:17:51,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 04:17:51,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 04:17:51,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 04:17:51,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 04:17:51,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 04:17:51,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 04:17:51,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 04:17:51,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 04:17:51,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 04:17:51,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 04:17:51,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 04:17:51,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 04:17:51,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 04:17:51,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 04:17:51,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 04:17:51,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 04:17:51,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 04:17:51,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 04:17:51,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 04:17:51,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 04:17:51,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 04:17:51,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 04:17:51,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 04:17:51,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 04:17:51,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 04:17:51,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 04:17:51,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 04:17:51,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 04:17:51,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 04:17:51,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 04:17:51,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 04:17:51,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 04:17:51,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 04:17:51,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 04:17:51,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 04:17:51,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 04:17:51,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 04:17:51,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 04:17:51,539 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 04:17:51,552 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 04:17:51,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 04:17:51,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 04:17:51,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 04:17:51,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 04:17:51,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 04:17:51,554 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 04:17:51,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 04:17:51,554 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 04:17:51,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 04:17:51,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 04:17:51,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 04:17:51,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 04:17:51,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 04:17:51,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 04:17:51,555 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 04:17:51,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 04:17:51,555 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 04:17:51,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 04:17:51,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 04:17:51,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 04:17:51,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 04:17:51,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 04:17:51,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:17:51,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 04:17:51,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 04:17:51,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 04:17:51,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 04:17:51,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 04:17:51,557 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 04:17:51,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 04:17:51,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 04:17:51,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 04:17:51,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 04:17:51,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 04:17:51,737 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 04:17:51,737 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 04:17:51,738 INFO L432 ainManager$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 04:17:52,663 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 04:17:52,805 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 04:17:52,805 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-01-28 04:17:52,809 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac15abcc1/60fcf4e933e4464f9a77288ff1a969b0/FLAG75c36712e [2023-01-28 04:17:52,818 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac15abcc1/60fcf4e933e4464f9a77288ff1a969b0 [2023-01-28 04:17:52,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 04:17:52,821 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 04:17:52,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 04:17:52,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 04:17:52,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 04:17:52,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:17:52" (1/1) ... [2023-01-28 04:17:52,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4adea6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:17:52, skipping insertion in model container [2023-01-28 04:17:52,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:17:52" (1/1) ... [2023-01-28 04:17:52,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 04:17:52,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 04:17:52,939 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 04:17:52,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:17:52,951 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 04:17:52,964 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 04:17:52,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:17:52,972 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:17:52,972 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:17:52,976 INFO L208 MainTranslator]: Completed translation [2023-01-28 04:17:52,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:17:52 WrapperNode [2023-01-28 04:17:52,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 04:17:52,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 04:17:52,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 04:17:52,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 04:17:52,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:17:52" (1/1) ... [2023-01-28 04:17:52,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:17:52" (1/1) ... [2023-01-28 04:17:53,002 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 203 [2023-01-28 04:17:53,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 04:17:53,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 04:17:53,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 04:17:53,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 04:17:53,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:17:52" (1/1) ... [2023-01-28 04:17:53,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:17:52" (1/1) ... [2023-01-28 04:17:53,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:17:52" (1/1) ... [2023-01-28 04:17:53,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:17:52" (1/1) ... [2023-01-28 04:17:53,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:17:52" (1/1) ... [2023-01-28 04:17:53,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:17:52" (1/1) ... [2023-01-28 04:17:53,018 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:17:52" (1/1) ... [2023-01-28 04:17:53,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:17:52" (1/1) ... [2023-01-28 04:17:53,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 04:17:53,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 04:17:53,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 04:17:53,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 04:17:53,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:17:52" (1/1) ... [2023-01-28 04:17:53,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:17:53,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:17:53,042 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 04:17:53,046 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 04:17:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 04:17:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 04:17:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 04:17:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 04:17:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 04:17:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 04:17:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 04:17:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 04:17:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 04:17:53,065 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 04:17:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 04:17:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 04:17:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 04:17:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 04:17:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 04:17:53,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 04:17:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 04:17:53,066 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 04:17:53,144 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 04:17:53,169 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 04:17:53,481 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 04:17:53,592 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 04:17:53,592 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 04:17:53,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:17:53 BoogieIcfgContainer [2023-01-28 04:17:53,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 04:17:53,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 04:17:53,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 04:17:53,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 04:17:53,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 04:17:52" (1/3) ... [2023-01-28 04:17:53,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7388644f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:17:53, skipping insertion in model container [2023-01-28 04:17:53,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:17:52" (2/3) ... [2023-01-28 04:17:53,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7388644f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:17:53, skipping insertion in model container [2023-01-28 04:17:53,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:17:53" (3/3) ... [2023-01-28 04:17:53,599 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2023-01-28 04:17:53,609 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 04:17:53,609 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 04:17:53,609 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 04:17:53,647 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 04:17:53,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 147 transitions, 318 flow [2023-01-28 04:17:53,708 INFO L130 PetriNetUnfolder]: 12/144 cut-off events. [2023-01-28 04:17:53,708 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:17:53,712 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 04:17:53,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 147 transitions, 318 flow [2023-01-28 04:17:53,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 134 transitions, 286 flow [2023-01-28 04:17:53,717 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 04:17:53,723 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 134 transitions, 286 flow [2023-01-28 04:17:53,725 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 134 transitions, 286 flow [2023-01-28 04:17:53,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 134 transitions, 286 flow [2023-01-28 04:17:53,743 INFO L130 PetriNetUnfolder]: 12/134 cut-off events. [2023-01-28 04:17:53,743 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:17:53,744 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 04:17:53,745 INFO L119 LiptonReduction]: Number of co-enabled transitions 1518 [2023-01-28 04:17:57,610 INFO L134 LiptonReduction]: Checked pairs total: 2063 [2023-01-28 04:17:57,610 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-01-28 04:17:57,623 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 04:17:57,627 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;@5abc0bf4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 04:17:57,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 04:17:57,632 INFO L130 PetriNetUnfolder]: 4/25 cut-off events. [2023-01-28 04:17:57,632 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:17:57,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:17:57,632 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 04:17:57,633 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 04:17:57,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:17:57,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1370048822, now seen corresponding path program 1 times [2023-01-28 04:17:57,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:17:57,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708072551] [2023-01-28 04:17:57,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:17:57,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:17:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:17:57,953 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 04:17:57,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:17:57,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708072551] [2023-01-28 04:17:57,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708072551] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:17:57,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:17:57,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 04:17:57,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235120114] [2023-01-28 04:17:57,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:17:57,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:17:57,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:17:57,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:17:57,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:17:57,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 274 [2023-01-28 04:17:57,986 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 04:17:57,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:17:57,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 274 [2023-01-28 04:17:57,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:17:58,160 INFO L130 PetriNetUnfolder]: 619/869 cut-off events. [2023-01-28 04:17:58,160 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-01-28 04:17:58,163 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 04:17:58,168 INFO L137 encePairwiseOnDemand]: 269/274 looper letters, 36 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2023-01-28 04:17:58,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 203 flow [2023-01-28 04:17:58,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:17:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:17:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2023-01-28 04:17:58,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-01-28 04:17:58,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 411 transitions. [2023-01-28 04:17:58,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 411 transitions. [2023-01-28 04:17:58,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:17:58,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 411 transitions. [2023-01-28 04:17:58,192 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 04:17:58,207 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 04:17:58,207 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 04:17:58,208 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 70 flow. Second operand 3 states and 411 transitions. [2023-01-28 04:17:58,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 203 flow [2023-01-28 04:17:58,212 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 04:17:58,213 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 84 flow [2023-01-28 04:17:58,216 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 04:17:58,220 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-01-28 04:17:58,221 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 84 flow [2023-01-28 04:17:58,221 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 04:17:58,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:17:58,221 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 04:17:58,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 04:17:58,222 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 04:17:58,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:17:58,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1687574261, now seen corresponding path program 1 times [2023-01-28 04:17:58,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:17:58,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48950098] [2023-01-28 04:17:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:17:58,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:17:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:17:58,380 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 04:17:58,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:17:58,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48950098] [2023-01-28 04:17:58,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48950098] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:17:58,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:17:58,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:17:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321554092] [2023-01-28 04:17:58,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:17:58,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:17:58,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:17:58,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:17:58,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:17:58,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 274 [2023-01-28 04:17:58,391 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 04:17:58,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:17:58,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 274 [2023-01-28 04:17:58,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:17:58,551 INFO L130 PetriNetUnfolder]: 1149/1685 cut-off events. [2023-01-28 04:17:58,551 INFO L131 PetriNetUnfolder]: For 279/279 co-relation queries the response was YES. [2023-01-28 04:17:58,553 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 04:17:58,558 INFO L137 encePairwiseOnDemand]: 269/274 looper letters, 60 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-01-28 04:17:58,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 66 transitions, 316 flow [2023-01-28 04:17:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:17:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:17:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 593 transitions. [2023-01-28 04:17:58,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43284671532846714 [2023-01-28 04:17:58,560 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 593 transitions. [2023-01-28 04:17:58,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 593 transitions. [2023-01-28 04:17:58,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:17:58,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 593 transitions. [2023-01-28 04:17:58,562 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 04:17:58,565 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 04:17:58,566 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 04:17:58,566 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 84 flow. Second operand 5 states and 593 transitions. [2023-01-28 04:17:58,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 66 transitions, 316 flow [2023-01-28 04:17:58,568 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 04:17:58,569 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 110 flow [2023-01-28 04:17:58,569 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 04:17:58,570 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-01-28 04:17:58,570 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 110 flow [2023-01-28 04:17:58,570 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 04:17:58,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:17:58,570 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 04:17:58,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 04:17:58,571 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 04:17:58,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:17:58,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1620014424, now seen corresponding path program 1 times [2023-01-28 04:17:58,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:17:58,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853106301] [2023-01-28 04:17:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:17:58,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:17:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:17:58,677 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 04:17:58,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:17:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853106301] [2023-01-28 04:17:58,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853106301] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:17:58,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570262610] [2023-01-28 04:17:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:17:58,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:17:58,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:17:58,681 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 04:17:58,706 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 04:17:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:17:58,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:17:58,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:17:58,853 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 04:17:58,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:17:58,898 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 04:17:58,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570262610] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:17:58,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:17:58,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-01-28 04:17:58,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362988410] [2023-01-28 04:17:58,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:17:58,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 04:17:58,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:17:58,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 04:17:58,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-01-28 04:17:58,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 274 [2023-01-28 04:17:58,901 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 04:17:58,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:17:58,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 274 [2023-01-28 04:17:58,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:17:59,251 INFO L130 PetriNetUnfolder]: 1377/2035 cut-off events. [2023-01-28 04:17:59,251 INFO L131 PetriNetUnfolder]: For 771/847 co-relation queries the response was YES. [2023-01-28 04:17:59,255 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 04:17:59,261 INFO L137 encePairwiseOnDemand]: 265/274 looper letters, 105 selfloop transitions, 23 changer transitions 0/130 dead transitions. [2023-01-28 04:17:59,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 130 transitions, 653 flow [2023-01-28 04:17:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 04:17:59,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 04:17:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1115 transitions. [2023-01-28 04:17:59,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40693430656934304 [2023-01-28 04:17:59,264 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1115 transitions. [2023-01-28 04:17:59,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1115 transitions. [2023-01-28 04:17:59,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:17:59,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1115 transitions. [2023-01-28 04:17:59,266 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 04:17:59,269 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 04:17:59,270 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 04:17:59,270 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 110 flow. Second operand 10 states and 1115 transitions. [2023-01-28 04:17:59,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 130 transitions, 653 flow [2023-01-28 04:17:59,273 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 04:17:59,275 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 269 flow [2023-01-28 04:17:59,275 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 04:17:59,276 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2023-01-28 04:17:59,276 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 269 flow [2023-01-28 04:17:59,276 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 04:17:59,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:17:59,276 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 04:17:59,283 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 04:17:59,483 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 04:17:59,483 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 04:17:59,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:17:59,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1693539329, now seen corresponding path program 1 times [2023-01-28 04:17:59,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:17:59,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667828331] [2023-01-28 04:17:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:17:59,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:17:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:17:59,578 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 04:17:59,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:17:59,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667828331] [2023-01-28 04:17:59,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667828331] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:17:59,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:17:59,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:17:59,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567221484] [2023-01-28 04:17:59,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:17:59,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:17:59,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:17:59,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:17:59,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:17:59,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 274 [2023-01-28 04:17:59,580 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 04:17:59,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:17:59,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 274 [2023-01-28 04:17:59,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:17:59,805 INFO L130 PetriNetUnfolder]: 1185/1765 cut-off events. [2023-01-28 04:17:59,806 INFO L131 PetriNetUnfolder]: For 2302/2350 co-relation queries the response was YES. [2023-01-28 04:17:59,809 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 04:17:59,814 INFO L137 encePairwiseOnDemand]: 269/274 looper letters, 71 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-01-28 04:17:59,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 77 transitions, 497 flow [2023-01-28 04:17:59,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:17:59,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:17:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 567 transitions. [2023-01-28 04:17:59,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138686131386861 [2023-01-28 04:17:59,816 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 567 transitions. [2023-01-28 04:17:59,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 567 transitions. [2023-01-28 04:17:59,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:17:59,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 567 transitions. [2023-01-28 04:17:59,817 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 04:17:59,819 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 04:17:59,820 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 04:17:59,820 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 269 flow. Second operand 5 states and 567 transitions. [2023-01-28 04:17:59,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 77 transitions, 497 flow [2023-01-28 04:17:59,827 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 04:17:59,828 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 271 flow [2023-01-28 04:17:59,828 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 04:17:59,829 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2023-01-28 04:17:59,830 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 271 flow [2023-01-28 04:17:59,830 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 04:17:59,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:17:59,830 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 04:17:59,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 04:17:59,830 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 04:17:59,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:17:59,831 INFO L85 PathProgramCache]: Analyzing trace with hash -683777609, now seen corresponding path program 1 times [2023-01-28 04:17:59,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:17:59,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697060125] [2023-01-28 04:17:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:17:59,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:17:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:17:59,951 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 04:17:59,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:17:59,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697060125] [2023-01-28 04:17:59,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697060125] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:17:59,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:17:59,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:17:59,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455800064] [2023-01-28 04:17:59,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:17:59,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:17:59,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:17:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:17:59,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:17:59,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 274 [2023-01-28 04:17:59,953 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 04:17:59,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:17:59,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 274 [2023-01-28 04:17:59,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:18:00,107 INFO L130 PetriNetUnfolder]: 937/1384 cut-off events. [2023-01-28 04:18:00,107 INFO L131 PetriNetUnfolder]: For 1939/2017 co-relation queries the response was YES. [2023-01-28 04:18:00,109 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 04:18:00,114 INFO L137 encePairwiseOnDemand]: 268/274 looper letters, 52 selfloop transitions, 3 changer transitions 25/83 dead transitions. [2023-01-28 04:18:00,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 541 flow [2023-01-28 04:18:00,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:18:00,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:18:00,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 677 transitions. [2023-01-28 04:18:00,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4118004866180049 [2023-01-28 04:18:00,116 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 677 transitions. [2023-01-28 04:18:00,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 677 transitions. [2023-01-28 04:18:00,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:18:00,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 677 transitions. [2023-01-28 04:18:00,117 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 04:18:00,119 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 04:18:00,119 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 04:18:00,119 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 271 flow. Second operand 6 states and 677 transitions. [2023-01-28 04:18:00,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 541 flow [2023-01-28 04:18:00,125 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 04:18:00,126 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 219 flow [2023-01-28 04:18:00,126 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 04:18:00,126 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2023-01-28 04:18:00,126 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 219 flow [2023-01-28 04:18:00,127 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 04:18:00,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:18:00,127 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 04:18:00,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 04:18:00,127 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 04:18:00,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:18:00,127 INFO L85 PathProgramCache]: Analyzing trace with hash 705664608, now seen corresponding path program 2 times [2023-01-28 04:18:00,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:18:00,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357950959] [2023-01-28 04:18:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:00,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:18:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:00,212 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 04:18:00,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:18:00,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357950959] [2023-01-28 04:18:00,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357950959] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:00,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138845525] [2023-01-28 04:18:00,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:18:00,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:18:00,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:18:00,214 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 04:18:00,216 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 04:18:00,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:18:00,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:18:00,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:18:00,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:18:00,359 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 04:18:00,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:18:00,434 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 04:18:00,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138845525] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:00,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:18:00,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2023-01-28 04:18:00,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953418045] [2023-01-28 04:18:00,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:18:00,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 04:18:00,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:18:00,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 04:18:00,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-01-28 04:18:00,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 274 [2023-01-28 04:18:00,437 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 04:18:00,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:18:00,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 274 [2023-01-28 04:18:00,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:18:00,713 INFO L130 PetriNetUnfolder]: 1525/2203 cut-off events. [2023-01-28 04:18:00,713 INFO L131 PetriNetUnfolder]: For 2637/2637 co-relation queries the response was YES. [2023-01-28 04:18:00,716 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 04:18:00,724 INFO L137 encePairwiseOnDemand]: 263/274 looper letters, 74 selfloop transitions, 33 changer transitions 0/108 dead transitions. [2023-01-28 04:18:00,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 108 transitions, 719 flow [2023-01-28 04:18:00,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:18:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:18:00,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 877 transitions. [2023-01-28 04:18:00,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4000912408759124 [2023-01-28 04:18:00,726 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 877 transitions. [2023-01-28 04:18:00,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 877 transitions. [2023-01-28 04:18:00,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:18:00,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 877 transitions. [2023-01-28 04:18:00,728 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 04:18:00,730 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 04:18:00,730 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 04:18:00,730 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 219 flow. Second operand 8 states and 877 transitions. [2023-01-28 04:18:00,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 108 transitions, 719 flow [2023-01-28 04:18:00,739 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 04:18:00,740 INFO L231 Difference]: Finished difference. Result has 53 places, 64 transitions, 469 flow [2023-01-28 04:18:00,740 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 04:18:00,740 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2023-01-28 04:18:00,740 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 64 transitions, 469 flow [2023-01-28 04:18:00,741 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 04:18:00,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:18:00,741 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 04:18:00,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 04:18:00,948 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 04:18:00,948 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 04:18:00,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:18:00,948 INFO L85 PathProgramCache]: Analyzing trace with hash -186636764, now seen corresponding path program 3 times [2023-01-28 04:18:00,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:18:00,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996242283] [2023-01-28 04:18:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:00,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:18:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:01,040 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 04:18:01,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:18:01,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996242283] [2023-01-28 04:18:01,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996242283] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:01,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015026052] [2023-01-28 04:18:01,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:18:01,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:18:01,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:18:01,045 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 04:18:01,047 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 04:18:01,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:18:01,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:18:01,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:18:01,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:18:01,191 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 04:18:01,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:18:01,238 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 04:18:01,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015026052] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:01,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:18:01,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2023-01-28 04:18:01,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752836929] [2023-01-28 04:18:01,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:18:01,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 04:18:01,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:18:01,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 04:18:01,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-01-28 04:18:01,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 274 [2023-01-28 04:18:01,241 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 04:18:01,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:18:01,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 274 [2023-01-28 04:18:01,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:18:01,538 INFO L130 PetriNetUnfolder]: 1631/2359 cut-off events. [2023-01-28 04:18:01,538 INFO L131 PetriNetUnfolder]: For 4764/4764 co-relation queries the response was YES. [2023-01-28 04:18:01,541 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 04:18:01,550 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 100 selfloop transitions, 39 changer transitions 0/140 dead transitions. [2023-01-28 04:18:01,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 140 transitions, 1134 flow [2023-01-28 04:18:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:18:01,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:18:01,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 995 transitions. [2023-01-28 04:18:01,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034874290348743 [2023-01-28 04:18:01,553 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 995 transitions. [2023-01-28 04:18:01,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 995 transitions. [2023-01-28 04:18:01,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:18:01,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 995 transitions. [2023-01-28 04:18:01,555 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 04:18:01,557 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 04:18:01,557 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 04:18:01,557 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 469 flow. Second operand 9 states and 995 transitions. [2023-01-28 04:18:01,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 140 transitions, 1134 flow [2023-01-28 04:18:01,572 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 04:18:01,573 INFO L231 Difference]: Finished difference. Result has 64 places, 81 transitions, 777 flow [2023-01-28 04:18:01,573 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 04:18:01,574 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2023-01-28 04:18:01,574 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 81 transitions, 777 flow [2023-01-28 04:18:01,574 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 04:18:01,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:18:01,574 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 04:18:01,581 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 04:18:01,783 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 04:18:01,783 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 04:18:01,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:18:01,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1323058908, now seen corresponding path program 4 times [2023-01-28 04:18:01,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:18:01,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252169381] [2023-01-28 04:18:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:01,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:18:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:01,900 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 04:18:01,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:18:01,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252169381] [2023-01-28 04:18:01,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252169381] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:01,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285508595] [2023-01-28 04:18:01,904 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:18:01,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:18:01,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:18:01,905 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 04:18:01,908 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 04:18:01,993 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:18:01,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:18:01,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:18:01,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:18:02,049 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 04:18:02,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:18:02,100 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 04:18:02,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285508595] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:02,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:18:02,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2023-01-28 04:18:02,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914048824] [2023-01-28 04:18:02,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:18:02,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 04:18:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:18:02,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 04:18:02,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-01-28 04:18:02,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 274 [2023-01-28 04:18:02,102 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 04:18:02,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:18:02,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 274 [2023-01-28 04:18:02,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:18:02,405 INFO L130 PetriNetUnfolder]: 1611/2320 cut-off events. [2023-01-28 04:18:02,405 INFO L131 PetriNetUnfolder]: For 8614/8614 co-relation queries the response was YES. [2023-01-28 04:18:02,409 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 04:18:02,418 INFO L137 encePairwiseOnDemand]: 263/274 looper letters, 81 selfloop transitions, 54 changer transitions 0/136 dead transitions. [2023-01-28 04:18:02,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 136 transitions, 1287 flow [2023-01-28 04:18:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:18:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:18:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 993 transitions. [2023-01-28 04:18:02,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.402676399026764 [2023-01-28 04:18:02,420 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 993 transitions. [2023-01-28 04:18:02,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 993 transitions. [2023-01-28 04:18:02,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:18:02,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 993 transitions. [2023-01-28 04:18:02,422 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 04:18:02,425 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 04:18:02,425 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 04:18:02,425 INFO L175 Difference]: Start difference. First operand has 64 places, 81 transitions, 777 flow. Second operand 9 states and 993 transitions. [2023-01-28 04:18:02,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 136 transitions, 1287 flow [2023-01-28 04:18:02,445 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 04:18:02,446 INFO L231 Difference]: Finished difference. Result has 74 places, 88 transitions, 1016 flow [2023-01-28 04:18:02,447 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 04:18:02,447 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2023-01-28 04:18:02,447 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 88 transitions, 1016 flow [2023-01-28 04:18:02,448 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 04:18:02,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:18:02,448 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 04:18:02,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 04:18:02,652 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 04:18:02,653 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 04:18:02,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:18:02,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1413007916, now seen corresponding path program 5 times [2023-01-28 04:18:02,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:18:02,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809757743] [2023-01-28 04:18:02,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:02,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:18:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:02,730 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 04:18:02,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:18:02,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809757743] [2023-01-28 04:18:02,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809757743] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:02,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704305357] [2023-01-28 04:18:02,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:18:02,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:18:02,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:18:02,732 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 04:18:02,734 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 04:18:02,804 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:18:02,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:18:02,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:18:02,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:18:02,839 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 04:18:02,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:18:02,878 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 04:18:02,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704305357] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:18:02,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:18:02,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-01-28 04:18:02,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487097452] [2023-01-28 04:18:02,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:18:02,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 04:18:02,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:18:02,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 04:18:02,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-01-28 04:18:02,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 274 [2023-01-28 04:18:02,881 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 04:18:02,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:18:02,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 274 [2023-01-28 04:18:02,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:18:03,434 INFO L130 PetriNetUnfolder]: 1887/2767 cut-off events. [2023-01-28 04:18:03,434 INFO L131 PetriNetUnfolder]: For 15862/15862 co-relation queries the response was YES. [2023-01-28 04:18:03,438 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 04:18:03,447 INFO L137 encePairwiseOnDemand]: 263/274 looper letters, 144 selfloop transitions, 160 changer transitions 0/304 dead transitions. [2023-01-28 04:18:03,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 304 transitions, 3651 flow [2023-01-28 04:18:03,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 04:18:03,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 04:18:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2195 transitions. [2023-01-28 04:18:03,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3814737573861661 [2023-01-28 04:18:03,452 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2195 transitions. [2023-01-28 04:18:03,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2195 transitions. [2023-01-28 04:18:03,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:18:03,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2195 transitions. [2023-01-28 04:18:03,456 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 04:18:03,461 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 04:18:03,461 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 04:18:03,461 INFO L175 Difference]: Start difference. First operand has 74 places, 88 transitions, 1016 flow. Second operand 21 states and 2195 transitions. [2023-01-28 04:18:03,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 304 transitions, 3651 flow [2023-01-28 04:18:03,498 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 04:18:03,501 INFO L231 Difference]: Finished difference. Result has 98 places, 199 transitions, 2868 flow [2023-01-28 04:18:03,501 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 04:18:03,501 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2023-01-28 04:18:03,501 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 199 transitions, 2868 flow [2023-01-28 04:18:03,502 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 04:18:03,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:18:03,502 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, 1, 1] [2023-01-28 04:18:03,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 04:18:03,707 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 04:18:03,707 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 04:18:03,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:18:03,707 INFO L85 PathProgramCache]: Analyzing trace with hash 533701012, now seen corresponding path program 6 times [2023-01-28 04:18:03,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:18:03,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529760053] [2023-01-28 04:18:03,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:03,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:18:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:03,786 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 04:18:03,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:18:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529760053] [2023-01-28 04:18:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529760053] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260751109] [2023-01-28 04:18:03,786 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:18:03,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:18:03,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:18:03,787 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 04:18:03,789 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 04:18:03,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:18:03,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:18:03,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:18:03,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:18:03,923 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 04:18:03,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:18:03,978 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 04:18:03,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260751109] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:03,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:18:03,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2023-01-28 04:18:03,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905751690] [2023-01-28 04:18:03,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:18:03,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 04:18:03,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:18:03,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 04:18:03,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-01-28 04:18:03,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 274 [2023-01-28 04:18:03,980 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 04:18:03,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:18:03,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 274 [2023-01-28 04:18:03,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:18:04,346 INFO L130 PetriNetUnfolder]: 1846/2692 cut-off events. [2023-01-28 04:18:04,347 INFO L131 PetriNetUnfolder]: For 20393/20393 co-relation queries the response was YES. [2023-01-28 04:18:04,353 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 04:18:04,365 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 75 selfloop transitions, 152 changer transitions 0/236 dead transitions. [2023-01-28 04:18:04,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 236 transitions, 3478 flow [2023-01-28 04:18:04,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:18:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:18:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 874 transitions. [2023-01-28 04:18:04,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3987226277372263 [2023-01-28 04:18:04,368 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 874 transitions. [2023-01-28 04:18:04,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 874 transitions. [2023-01-28 04:18:04,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:18:04,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 874 transitions. [2023-01-28 04:18:04,370 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 04:18:04,372 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 04:18:04,372 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 04:18:04,372 INFO L175 Difference]: Start difference. First operand has 98 places, 199 transitions, 2868 flow. Second operand 8 states and 874 transitions. [2023-01-28 04:18:04,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 236 transitions, 3478 flow [2023-01-28 04:18:04,451 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 04:18:04,454 INFO L231 Difference]: Finished difference. Result has 105 places, 202 transitions, 3194 flow [2023-01-28 04:18:04,455 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 04:18:04,456 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 73 predicate places. [2023-01-28 04:18:04,456 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 202 transitions, 3194 flow [2023-01-28 04:18:04,456 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 04:18:04,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:18:04,456 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 04:18:04,464 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 04:18:04,661 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 04:18:04,662 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 04:18:04,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:18:04,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1990448776, now seen corresponding path program 1 times [2023-01-28 04:18:04,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:18:04,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148461037] [2023-01-28 04:18:04,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:04,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:18:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:04,720 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 04:18:04,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:18:04,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148461037] [2023-01-28 04:18:04,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148461037] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:04,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636133692] [2023-01-28 04:18:04,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:04,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:18:04,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:18:04,725 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 04:18:04,727 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 04:18:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:04,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:18:04,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:18:04,835 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 04:18:04,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:18:04,859 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 04:18:04,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636133692] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:04,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:18:04,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-01-28 04:18:04,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216292558] [2023-01-28 04:18:04,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:18:04,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:18:04,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:18:04,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:18:04,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 04:18:04,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 274 [2023-01-28 04:18:04,861 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 04:18:04,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:18:04,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 274 [2023-01-28 04:18:04,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:18:05,119 INFO L130 PetriNetUnfolder]: 1718/2489 cut-off events. [2023-01-28 04:18:05,119 INFO L131 PetriNetUnfolder]: For 26288/26611 co-relation queries the response was YES. [2023-01-28 04:18:05,124 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 04:18:05,130 INFO L137 encePairwiseOnDemand]: 269/274 looper letters, 243 selfloop transitions, 13 changer transitions 0/275 dead transitions. [2023-01-28 04:18:05,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 275 transitions, 4786 flow [2023-01-28 04:18:05,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:18:05,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:18:05,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 573 transitions. [2023-01-28 04:18:05,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41824817518248175 [2023-01-28 04:18:05,133 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 573 transitions. [2023-01-28 04:18:05,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 573 transitions. [2023-01-28 04:18:05,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:18:05,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 573 transitions. [2023-01-28 04:18:05,134 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 04:18:05,135 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 04:18:05,136 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 04:18:05,136 INFO L175 Difference]: Start difference. First operand has 105 places, 202 transitions, 3194 flow. Second operand 5 states and 573 transitions. [2023-01-28 04:18:05,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 275 transitions, 4786 flow [2023-01-28 04:18:05,192 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 04:18:05,195 INFO L231 Difference]: Finished difference. Result has 105 places, 203 transitions, 3110 flow [2023-01-28 04:18:05,196 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 04:18:05,196 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 73 predicate places. [2023-01-28 04:18:05,196 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 203 transitions, 3110 flow [2023-01-28 04:18:05,196 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 04:18:05,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:18:05,196 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 04:18:05,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 04:18:05,401 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 04:18:05,401 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 04:18:05,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:18:05,402 INFO L85 PathProgramCache]: Analyzing trace with hash 3263289, now seen corresponding path program 1 times [2023-01-28 04:18:05,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:18:05,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866225040] [2023-01-28 04:18:05,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:05,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:18:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:05,706 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 04:18:05,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:18:05,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866225040] [2023-01-28 04:18:05,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866225040] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:05,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947856225] [2023-01-28 04:18:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:05,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:18:05,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:18:05,709 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 04:18:05,711 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 04:18:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:05,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 60 conjunts are in the unsatisfiable core [2023-01-28 04:18:05,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:18:05,841 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 04:18:05,872 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 04:18:05,897 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 04:18:05,942 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 04:18:05,960 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 04:18:05,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:18:06,019 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 04:18:06,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947856225] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:18:06,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:18:06,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 5] total 15 [2023-01-28 04:18:06,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144438314] [2023-01-28 04:18:06,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:18:06,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 04:18:06,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:18:06,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 04:18:06,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-01-28 04:18:06,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 274 [2023-01-28 04:18:06,024 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 04:18:06,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:18:06,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 274 [2023-01-28 04:18:06,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:18:06,723 INFO L130 PetriNetUnfolder]: 2808/4087 cut-off events. [2023-01-28 04:18:06,723 INFO L131 PetriNetUnfolder]: For 35184/35377 co-relation queries the response was YES. [2023-01-28 04:18:06,738 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 04:18:06,772 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 304 selfloop transitions, 124 changer transitions 1/443 dead transitions. [2023-01-28 04:18:06,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 443 transitions, 6977 flow [2023-01-28 04:18:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 04:18:06,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 04:18:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1270 transitions. [2023-01-28 04:18:06,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3565412689500281 [2023-01-28 04:18:06,776 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1270 transitions. [2023-01-28 04:18:06,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1270 transitions. [2023-01-28 04:18:06,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:18:06,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1270 transitions. [2023-01-28 04:18:06,779 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 04:18:06,782 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 04:18:06,783 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 04:18:06,783 INFO L175 Difference]: Start difference. First operand has 105 places, 203 transitions, 3110 flow. Second operand 13 states and 1270 transitions. [2023-01-28 04:18:06,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 443 transitions, 6977 flow [2023-01-28 04:18:06,907 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 04:18:06,912 INFO L231 Difference]: Finished difference. Result has 122 places, 295 transitions, 5023 flow [2023-01-28 04:18:06,912 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 04:18:06,912 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 90 predicate places. [2023-01-28 04:18:06,913 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 295 transitions, 5023 flow [2023-01-28 04:18:06,913 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 04:18:06,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:18:06,913 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 04:18:06,918 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 04:18:07,118 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 04:18:07,118 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 04:18:07,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:18:07,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1941319685, now seen corresponding path program 1 times [2023-01-28 04:18:07,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:18:07,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863156007] [2023-01-28 04:18:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:07,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:18:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:07,539 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 04:18:07,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:18:07,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863156007] [2023-01-28 04:18:07,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863156007] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:07,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540215104] [2023-01-28 04:18:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:07,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:18:07,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:18:07,547 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 04:18:07,548 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 04:18:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:07,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 04:18:07,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:18:07,882 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:18:07,883 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 04:18:07,950 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 04:18:07,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:18:08,019 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:18:08,020 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 04:18:08,175 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 04:18:08,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540215104] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:18:08,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:18:08,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 10] total 26 [2023-01-28 04:18:08,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593032848] [2023-01-28 04:18:08,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:18:08,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 04:18:08,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:18:08,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 04:18:08,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2023-01-28 04:18:08,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 274 [2023-01-28 04:18:08,179 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 04:18:08,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:18:08,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 274 [2023-01-28 04:18:08,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:18:10,825 INFO L130 PetriNetUnfolder]: 5451/8012 cut-off events. [2023-01-28 04:18:10,826 INFO L131 PetriNetUnfolder]: For 85174/85174 co-relation queries the response was YES. [2023-01-28 04:18:10,845 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 04:18:10,872 INFO L137 encePairwiseOnDemand]: 259/274 looper letters, 517 selfloop transitions, 375 changer transitions 9/901 dead transitions. [2023-01-28 04:18:10,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 901 transitions, 15005 flow [2023-01-28 04:18:10,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-01-28 04:18:10,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-01-28 04:18:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3174 transitions. [2023-01-28 04:18:10,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3217761557177616 [2023-01-28 04:18:10,877 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3174 transitions. [2023-01-28 04:18:10,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3174 transitions. [2023-01-28 04:18:10,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:18:10,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3174 transitions. [2023-01-28 04:18:10,881 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 04:18:10,889 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 04:18:10,890 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 04:18:10,890 INFO L175 Difference]: Start difference. First operand has 122 places, 295 transitions, 5023 flow. Second operand 36 states and 3174 transitions. [2023-01-28 04:18:10,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 901 transitions, 15005 flow [2023-01-28 04:18:11,270 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 04:18:11,279 INFO L231 Difference]: Finished difference. Result has 170 places, 603 transitions, 11912 flow [2023-01-28 04:18:11,279 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 04:18:11,279 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 138 predicate places. [2023-01-28 04:18:11,280 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 603 transitions, 11912 flow [2023-01-28 04:18:11,280 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 04:18:11,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:18:11,281 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 04:18:11,285 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 04:18:11,485 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 04:18:11,485 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 04:18:11,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:18:11,486 INFO L85 PathProgramCache]: Analyzing trace with hash 246589533, now seen corresponding path program 2 times [2023-01-28 04:18:11,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:18:11,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404843059] [2023-01-28 04:18:11,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:11,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:18:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:11,832 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 04:18:11,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:18:11,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404843059] [2023-01-28 04:18:11,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404843059] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:11,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342494925] [2023-01-28 04:18:11,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:18:11,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:18:11,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:18:11,833 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 04:18:11,840 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 04:18:11,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:18:11,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:18:11,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-28 04:18:11,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:18:11,984 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 04:18:11,996 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 04:18:11,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:18:12,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:18:12,030 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 04:18:12,049 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 04:18:12,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342494925] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:18:12,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:18:12,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 11 [2023-01-28 04:18:12,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024814979] [2023-01-28 04:18:12,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:18:12,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 04:18:12,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:18:12,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 04:18:12,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-01-28 04:18:12,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 274 [2023-01-28 04:18:12,052 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 04:18:12,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:18:12,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 274 [2023-01-28 04:18:12,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:18:13,874 INFO L130 PetriNetUnfolder]: 7193/10612 cut-off events. [2023-01-28 04:18:13,875 INFO L131 PetriNetUnfolder]: For 168243/168713 co-relation queries the response was YES. [2023-01-28 04:18:13,908 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 04:18:13,956 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 511 selfloop transitions, 368 changer transitions 1/905 dead transitions. [2023-01-28 04:18:13,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 905 transitions, 18562 flow [2023-01-28 04:18:13,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 04:18:13,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 04:18:13,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1234 transitions. [2023-01-28 04:18:13,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40942269409422694 [2023-01-28 04:18:13,958 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1234 transitions. [2023-01-28 04:18:13,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1234 transitions. [2023-01-28 04:18:13,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:18:13,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1234 transitions. [2023-01-28 04:18:13,960 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 04:18:13,962 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 04:18:13,963 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 04:18:13,963 INFO L175 Difference]: Start difference. First operand has 170 places, 603 transitions, 11912 flow. Second operand 11 states and 1234 transitions. [2023-01-28 04:18:13,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 905 transitions, 18562 flow [2023-01-28 04:18:14,902 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 04:18:14,914 INFO L231 Difference]: Finished difference. Result has 185 places, 747 transitions, 15579 flow [2023-01-28 04:18:14,914 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 04:18:14,915 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 153 predicate places. [2023-01-28 04:18:14,915 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 747 transitions, 15579 flow [2023-01-28 04:18:14,915 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 04:18:14,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:18:14,915 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 04:18:14,920 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 04:18:15,120 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 04:18:15,120 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 04:18:15,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:18:15,120 INFO L85 PathProgramCache]: Analyzing trace with hash 818684429, now seen corresponding path program 2 times [2023-01-28 04:18:15,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:18:15,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091497290] [2023-01-28 04:18:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:15,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:18:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:15,789 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 04:18:15,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:18:15,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091497290] [2023-01-28 04:18:15,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091497290] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:15,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498573919] [2023-01-28 04:18:15,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:18:15,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:18:15,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:18:15,791 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 04:18:15,793 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 04:18:15,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:18:15,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:18:15,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 04:18:15,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:18:16,044 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:18:16,045 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 04:18:16,156 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 04:18:16,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:18:16,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:18:16,273 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 04:18:16,408 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 04:18:16,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498573919] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:18:16,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:18:16,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 29 [2023-01-28 04:18:16,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290416947] [2023-01-28 04:18:16,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:18:16,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 04:18:16,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:18:16,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 04:18:16,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2023-01-28 04:18:16,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 274 [2023-01-28 04:18:16,412 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 04:18:16,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:18:16,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 274 [2023-01-28 04:18:16,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:18:22,759 INFO L130 PetriNetUnfolder]: 12880/19067 cut-off events. [2023-01-28 04:18:22,759 INFO L131 PetriNetUnfolder]: For 331470/331470 co-relation queries the response was YES. [2023-01-28 04:18:22,826 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 04:18:22,904 INFO L137 encePairwiseOnDemand]: 259/274 looper letters, 760 selfloop transitions, 1216 changer transitions 12/1988 dead transitions. [2023-01-28 04:18:22,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 1988 transitions, 39870 flow [2023-01-28 04:18:22,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-01-28 04:18:22,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-01-28 04:18:22,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 5859 transitions. [2023-01-28 04:18:22,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28135804840568573 [2023-01-28 04:18:22,912 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 5859 transitions. [2023-01-28 04:18:22,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 5859 transitions. [2023-01-28 04:18:22,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:18:22,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 5859 transitions. [2023-01-28 04:18:22,918 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 04:18:22,934 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 04:18:22,936 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 04:18:22,936 INFO L175 Difference]: Start difference. First operand has 185 places, 747 transitions, 15579 flow. Second operand 76 states and 5859 transitions. [2023-01-28 04:18:22,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 1988 transitions, 39870 flow [2023-01-28 04:18:25,238 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 04:18:25,262 INFO L231 Difference]: Finished difference. Result has 289 places, 1566 transitions, 35700 flow [2023-01-28 04:18:25,262 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 04:18:25,262 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 257 predicate places. [2023-01-28 04:18:25,262 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 1566 transitions, 35700 flow [2023-01-28 04:18:25,263 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 04:18:25,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:18:25,263 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 04:18:25,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 04:18:25,468 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 04:18:25,468 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 04:18:25,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:18:25,468 INFO L85 PathProgramCache]: Analyzing trace with hash 665140195, now seen corresponding path program 3 times [2023-01-28 04:18:25,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:18:25,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497917865] [2023-01-28 04:18:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:25,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:18:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:26,006 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 04:18:26,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:18:26,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497917865] [2023-01-28 04:18:26,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497917865] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:26,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455834029] [2023-01-28 04:18:26,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:18:26,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:18:26,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:18:26,008 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 04:18:26,010 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 04:18:26,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:18:26,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:18:26,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 61 conjunts are in the unsatisfiable core [2023-01-28 04:18:26,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:18:26,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:18:26,283 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 04:18:26,360 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:18:26,360 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 04:18:26,509 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 04:18:26,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:18:26,767 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:18:26,767 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 04:18:26,770 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 04:18:26,949 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 04:18:26,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455834029] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:18:26,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:18:26,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 32 [2023-01-28 04:18:26,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559797584] [2023-01-28 04:18:26,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:18:26,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 04:18:26,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:18:26,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 04:18:26,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=989, Unknown=2, NotChecked=0, Total=1122 [2023-01-28 04:18:26,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 274 [2023-01-28 04:18:26,953 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 04:18:26,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:18:26,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 274 [2023-01-28 04:18:26,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:18:37,836 INFO L130 PetriNetUnfolder]: 16411/24255 cut-off events. [2023-01-28 04:18:37,837 INFO L131 PetriNetUnfolder]: For 522053/522053 co-relation queries the response was YES. [2023-01-28 04:18:37,963 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 04:18:38,067 INFO L137 encePairwiseOnDemand]: 257/274 looper letters, 745 selfloop transitions, 1855 changer transitions 12/2612 dead transitions. [2023-01-28 04:18:38,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 2612 transitions, 58363 flow [2023-01-28 04:18:38,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-01-28 04:18:38,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-01-28 04:18:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 5035 transitions. [2023-01-28 04:18:38,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2871236313868613 [2023-01-28 04:18:38,073 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 5035 transitions. [2023-01-28 04:18:38,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 5035 transitions. [2023-01-28 04:18:38,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:18:38,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 5035 transitions. [2023-01-28 04:18:38,078 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 04:18:38,086 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 04:18:38,087 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 04:18:38,087 INFO L175 Difference]: Start difference. First operand has 289 places, 1566 transitions, 35700 flow. Second operand 64 states and 5035 transitions. [2023-01-28 04:18:38,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 2612 transitions, 58363 flow [2023-01-28 04:18:45,208 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 04:18:45,248 INFO L231 Difference]: Finished difference. Result has 377 places, 2234 transitions, 55044 flow [2023-01-28 04:18:45,249 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 04:18:45,249 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 345 predicate places. [2023-01-28 04:18:45,249 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 2234 transitions, 55044 flow [2023-01-28 04:18:45,249 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 04:18:45,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:18:45,250 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 04:18:45,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-01-28 04:18:45,450 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 04:18:45,450 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 04:18:45,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:18:45,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1207527799, now seen corresponding path program 3 times [2023-01-28 04:18:45,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:18:45,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198440402] [2023-01-28 04:18:45,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:18:45,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:18:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:18:45,708 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 04:18:45,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:18:45,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198440402] [2023-01-28 04:18:45,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198440402] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:18:45,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452094142] [2023-01-28 04:18:45,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:18:45,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:18:45,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:18:45,713 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 04:18:45,715 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 04:18:45,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:18:45,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:18:45,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 52 conjunts are in the unsatisfiable core [2023-01-28 04:18:45,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:18:45,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:18:45,948 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 04:18:45,972 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 04:18:45,987 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 04:18:45,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:18:46,015 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 04:18:46,018 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 04:18:46,038 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:18:46,038 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 04:18:46,041 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 04:18:46,088 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 04:18:46,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452094142] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:18:46,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:18:46,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2023-01-28 04:18:46,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561556595] [2023-01-28 04:18:46,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:18:46,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 04:18:46,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:18:46,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 04:18:46,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=311, Unknown=2, NotChecked=74, Total=462 [2023-01-28 04:18:46,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 274 [2023-01-28 04:18:46,091 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 04:18:46,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:18:46,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 274 [2023-01-28 04:18:46,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:18:56,271 INFO L130 PetriNetUnfolder]: 16753/24793 cut-off events. [2023-01-28 04:18:56,271 INFO L131 PetriNetUnfolder]: For 728939/729671 co-relation queries the response was YES. [2023-01-28 04:18:56,529 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 04:18:56,668 INFO L137 encePairwiseOnDemand]: 265/274 looper letters, 1214 selfloop transitions, 1178 changer transitions 2/2449 dead transitions. [2023-01-28 04:18:56,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 2449 transitions, 63541 flow [2023-01-28 04:18:56,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 04:18:56,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 04:18:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1402 transitions. [2023-01-28 04:18:56,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935991016282987 [2023-01-28 04:18:56,670 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1402 transitions. [2023-01-28 04:18:56,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1402 transitions. [2023-01-28 04:18:56,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:18:56,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1402 transitions. [2023-01-28 04:18:56,672 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 04:18:56,674 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 04:18:56,674 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 04:18:56,674 INFO L175 Difference]: Start difference. First operand has 377 places, 2234 transitions, 55044 flow. Second operand 13 states and 1402 transitions. [2023-01-28 04:18:56,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 2449 transitions, 63541 flow [2023-01-28 04:19:09,873 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 04:19:09,915 INFO L231 Difference]: Finished difference. Result has 390 places, 2316 transitions, 58068 flow [2023-01-28 04:19:09,916 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 04:19:09,916 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 358 predicate places. [2023-01-28 04:19:09,916 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 2316 transitions, 58068 flow [2023-01-28 04:19:09,917 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 04:19:09,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:19:09,917 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 04:19:09,921 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 04:19:10,121 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 04:19:10,121 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 04:19:10,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:19:10,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1758949043, now seen corresponding path program 4 times [2023-01-28 04:19:10,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:19:10,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721967139] [2023-01-28 04:19:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:19:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:19:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:19:10,343 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 04:19:10,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:19:10,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721967139] [2023-01-28 04:19:10,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721967139] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:19:10,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680116957] [2023-01-28 04:19:10,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:19:10,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:19:10,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:19:10,345 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 04:19:10,348 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 04:19:10,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:19:10,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:19:10,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-28 04:19:10,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:19:10,499 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 04:19:10,512 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 04:19:10,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:19:10,535 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:19:10,535 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 04:19:10,567 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 04:19:10,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680116957] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:19:10,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:19:10,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 11 [2023-01-28 04:19:10,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114610433] [2023-01-28 04:19:10,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:19:10,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 04:19:10,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:19:10,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 04:19:10,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-01-28 04:19:10,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 274 [2023-01-28 04:19:10,569 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 04:19:10,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:19:10,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 274 [2023-01-28 04:19:10,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:19:22,654 INFO L130 PetriNetUnfolder]: 19717/29132 cut-off events. [2023-01-28 04:19:22,654 INFO L131 PetriNetUnfolder]: For 933011/934114 co-relation queries the response was YES. [2023-01-28 04:19:22,891 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 04:19:23,141 INFO L137 encePairwiseOnDemand]: 265/274 looper letters, 1931 selfloop transitions, 805 changer transitions 1/2792 dead transitions. [2023-01-28 04:19:23,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 2792 transitions, 74500 flow [2023-01-28 04:19:23,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 04:19:23,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 04:19:23,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1227 transitions. [2023-01-28 04:19:23,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.407100199071002 [2023-01-28 04:19:23,143 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1227 transitions. [2023-01-28 04:19:23,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1227 transitions. [2023-01-28 04:19:23,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:19:23,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1227 transitions. [2023-01-28 04:19:23,144 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 04:19:23,145 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 04:19:23,146 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 04:19:23,146 INFO L175 Difference]: Start difference. First operand has 390 places, 2316 transitions, 58068 flow. Second operand 11 states and 1227 transitions. [2023-01-28 04:19:23,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 2792 transitions, 74500 flow [2023-01-28 04:19:40,021 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 04:19:40,069 INFO L231 Difference]: Finished difference. Result has 403 places, 2602 transitions, 67072 flow [2023-01-28 04:19:40,070 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 04:19:40,070 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 371 predicate places. [2023-01-28 04:19:40,071 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 2602 transitions, 67072 flow [2023-01-28 04:19:40,071 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 04:19:40,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:19:40,071 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 04:19:40,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-01-28 04:19:40,275 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 04:19:40,275 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 04:19:40,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:19:40,276 INFO L85 PathProgramCache]: Analyzing trace with hash -209660607, now seen corresponding path program 5 times [2023-01-28 04:19:40,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:19:40,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848972886] [2023-01-28 04:19:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:19:40,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:19:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:19:40,489 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 04:19:40,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:19:40,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848972886] [2023-01-28 04:19:40,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848972886] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:19:40,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257076860] [2023-01-28 04:19:40,489 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:19:40,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:19:40,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:19:40,490 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 04:19:40,492 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 04:19:40,583 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:19:40,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:19:40,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-28 04:19:40,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:19:40,662 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 04:19:40,677 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 04:19:40,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:19:40,708 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:19:40,708 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 04:19:40,735 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 04:19:40,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257076860] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:19:40,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:19:40,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 12 [2023-01-28 04:19:40,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602802990] [2023-01-28 04:19:40,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:19:40,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 04:19:40,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:19:40,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 04:19:40,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-01-28 04:19:40,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 274 [2023-01-28 04:19:40,738 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 04:19:40,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:19:40,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 274 [2023-01-28 04:19:40,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:19:54,332 INFO L130 PetriNetUnfolder]: 20363/30059 cut-off events. [2023-01-28 04:19:54,332 INFO L131 PetriNetUnfolder]: For 975206/976288 co-relation queries the response was YES. [2023-01-28 04:19:54,724 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 04:19:54,873 INFO L137 encePairwiseOnDemand]: 265/274 looper letters, 2195 selfloop transitions, 580 changer transitions 1/2831 dead transitions. [2023-01-28 04:19:54,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 2831 transitions, 77135 flow [2023-01-28 04:19:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 04:19:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 04:19:54,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1205 transitions. [2023-01-28 04:19:54,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3998009289980093 [2023-01-28 04:19:54,874 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1205 transitions. [2023-01-28 04:19:54,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1205 transitions. [2023-01-28 04:19:54,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:19:54,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1205 transitions. [2023-01-28 04:19:54,876 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 04:19:54,877 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 04:19:54,877 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 04:19:54,877 INFO L175 Difference]: Start difference. First operand has 403 places, 2602 transitions, 67072 flow. Second operand 11 states and 1205 transitions. [2023-01-28 04:19:54,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 2831 transitions, 77135 flow [2023-01-28 04:20:12,731 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 04:20:12,781 INFO L231 Difference]: Finished difference. Result has 413 places, 2711 transitions, 69927 flow [2023-01-28 04:20:12,783 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 04:20:12,783 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 381 predicate places. [2023-01-28 04:20:12,783 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 2711 transitions, 69927 flow [2023-01-28 04:20:12,783 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 04:20:12,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:20:12,784 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 04:20:12,788 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 04:20:12,988 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 04:20:12,988 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 04:20:12,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:20:12,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1100337783, now seen corresponding path program 4 times [2023-01-28 04:20:12,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:20:12,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430857602] [2023-01-28 04:20:12,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:20:12,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:20:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:20:13,332 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 04:20:13,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:20:13,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430857602] [2023-01-28 04:20:13,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430857602] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:20:13,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898172388] [2023-01-28 04:20:13,333 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:20:13,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:20:13,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:20:13,334 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 04:20:13,336 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 04:20:13,436 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:20:13,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:20:13,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 04:20:13,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:20:13,672 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:20:13,673 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 04:20:13,705 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 04:20:13,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:20:13,758 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:20:13,758 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 04:20:13,933 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 04:20:13,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898172388] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:20:13,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:20:13,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 10] total 27 [2023-01-28 04:20:13,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994888931] [2023-01-28 04:20:13,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:20:13,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 04:20:13,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:20:13,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 04:20:13,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2023-01-28 04:20:13,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 274 [2023-01-28 04:20:13,936 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 04:20:13,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:20:13,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 274 [2023-01-28 04:20:13,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:20:31,572 INFO L130 PetriNetUnfolder]: 22523/33297 cut-off events. [2023-01-28 04:20:31,572 INFO L131 PetriNetUnfolder]: For 1009333/1009333 co-relation queries the response was YES. [2023-01-28 04:20:31,879 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 04:20:32,130 INFO L137 encePairwiseOnDemand]: 261/274 looper letters, 1754 selfloop transitions, 1436 changer transitions 9/3199 dead transitions. [2023-01-28 04:20:32,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 3199 transitions, 86309 flow [2023-01-28 04:20:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-01-28 04:20:32,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-01-28 04:20:32,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3715 transitions. [2023-01-28 04:20:32,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153114921066033 [2023-01-28 04:20:32,133 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3715 transitions. [2023-01-28 04:20:32,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3715 transitions. [2023-01-28 04:20:32,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:20:32,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3715 transitions. [2023-01-28 04:20:32,137 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 04:20:32,142 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 04:20:32,143 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 04:20:32,143 INFO L175 Difference]: Start difference. First operand has 413 places, 2711 transitions, 69927 flow. Second operand 43 states and 3715 transitions. [2023-01-28 04:20:32,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 3199 transitions, 86309 flow [2023-01-28 04:20:53,490 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 04:20:53,548 INFO L231 Difference]: Finished difference. Result has 463 places, 2999 transitions, 81530 flow [2023-01-28 04:20:53,550 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 04:20:53,550 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 431 predicate places. [2023-01-28 04:20:53,550 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 2999 transitions, 81530 flow [2023-01-28 04:20:53,551 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 04:20:53,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:20:53,551 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 04:20:53,558 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 04:20:53,755 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 04:20:53,755 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 04:20:53,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:20:53,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1925660755, now seen corresponding path program 6 times [2023-01-28 04:20:53,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:20:53,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838363972] [2023-01-28 04:20:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:20:53,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:20:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:20:54,031 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 04:20:54,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:20:54,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838363972] [2023-01-28 04:20:54,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838363972] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:20:54,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348865741] [2023-01-28 04:20:54,031 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:20:54,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:20:54,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:20:54,032 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 04:20:54,033 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 04:20:54,132 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 04:20:54,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:20:54,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-28 04:20:54,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:20:54,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:20:54,244 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 04:20:54,267 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 04:20:54,284 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 04:20:54,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:20:54,330 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:20:54,331 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 04:20:54,337 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 04:20:54,408 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 04:20:54,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348865741] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:20:54,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:20:54,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-01-28 04:20:54,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379735461] [2023-01-28 04:20:54,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:20:54,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 04:20:54,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:20:54,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 04:20:54,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=410, Unknown=1, NotChecked=0, Total=506 [2023-01-28 04:20:54,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 274 [2023-01-28 04:20:54,411 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 04:20:54,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:20:54,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 274 [2023-01-28 04:20:54,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:21:12,877 INFO L130 PetriNetUnfolder]: 23882/35299 cut-off events. [2023-01-28 04:21:12,878 INFO L131 PetriNetUnfolder]: For 1301011/1302196 co-relation queries the response was YES. [2023-01-28 04:21:13,275 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 04:21:13,485 INFO L137 encePairwiseOnDemand]: 266/274 looper letters, 2342 selfloop transitions, 911 changer transitions 1/3314 dead transitions. [2023-01-28 04:21:13,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 3314 transitions, 95411 flow [2023-01-28 04:21:13,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 04:21:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 04:21:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1277 transitions. [2023-01-28 04:21:13,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38838199513381993 [2023-01-28 04:21:13,487 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1277 transitions. [2023-01-28 04:21:13,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1277 transitions. [2023-01-28 04:21:13,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:21:13,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1277 transitions. [2023-01-28 04:21:13,489 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 04:21:13,490 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 04:21:13,491 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 04:21:13,491 INFO L175 Difference]: Start difference. First operand has 463 places, 2999 transitions, 81530 flow. Second operand 12 states and 1277 transitions. [2023-01-28 04:21:13,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 3314 transitions, 95411 flow [2023-01-28 04:21:41,359 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 04:21:41,420 INFO L231 Difference]: Finished difference. Result has 474 places, 3162 transitions, 87596 flow [2023-01-28 04:21:41,421 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 04:21:41,422 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 442 predicate places. [2023-01-28 04:21:41,422 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 3162 transitions, 87596 flow [2023-01-28 04:21:41,422 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 04:21:41,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:21:41,422 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 04:21:41,427 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 04:21:41,623 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 04:21:41,623 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 04:21:41,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:21:41,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1421372669, now seen corresponding path program 5 times [2023-01-28 04:21:41,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:21:41,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090653535] [2023-01-28 04:21:41,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:21:41,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:21:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:21:41,953 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 04:21:41,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:21:41,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090653535] [2023-01-28 04:21:41,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090653535] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:21:41,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707263638] [2023-01-28 04:21:41,953 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:21:41,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:21:41,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:21:41,957 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 04:21:41,959 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 04:21:42,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:21:42,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:21:42,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 57 conjunts are in the unsatisfiable core [2023-01-28 04:21:42,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:21:42,276 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:21:42,278 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:21:42,278 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 04:21:42,284 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 04:21:42,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:21:42,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:21:42,358 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 04:21:42,513 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 04:21:42,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707263638] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:21:42,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:21:42,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 26 [2023-01-28 04:21:42,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172314548] [2023-01-28 04:21:42,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:21:42,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 04:21:42,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:21:42,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 04:21:42,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2023-01-28 04:21:42,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 274 [2023-01-28 04:21:42,516 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 04:21:42,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:21:42,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 274 [2023-01-28 04:21:42,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:22:20,568 INFO L130 PetriNetUnfolder]: 40359/61115 cut-off events. [2023-01-28 04:22:20,568 INFO L131 PetriNetUnfolder]: For 2324797/2324797 co-relation queries the response was YES. [2023-01-28 04:22:21,849 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 04:22:22,315 INFO L137 encePairwiseOnDemand]: 257/274 looper letters, 2631 selfloop transitions, 3595 changer transitions 20/6246 dead transitions. [2023-01-28 04:22:22,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 6246 transitions, 183469 flow [2023-01-28 04:22:22,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-01-28 04:22:22,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-01-28 04:22:22,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 4324 transitions. [2023-01-28 04:22:22,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32206167138388203 [2023-01-28 04:22:22,319 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 4324 transitions. [2023-01-28 04:22:22,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 4324 transitions. [2023-01-28 04:22:22,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:22:22,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 4324 transitions. [2023-01-28 04:22:22,323 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 04:22:22,329 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 04:22:22,330 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 04:22:22,330 INFO L175 Difference]: Start difference. First operand has 474 places, 3162 transitions, 87596 flow. Second operand 49 states and 4324 transitions. [2023-01-28 04:22:22,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 6246 transitions, 183469 flow [2023-01-28 04:23:35,720 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 04:23:35,830 INFO L231 Difference]: Finished difference. Result has 535 places, 5085 transitions, 158215 flow [2023-01-28 04:23:35,833 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 04:23:35,833 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 503 predicate places. [2023-01-28 04:23:35,833 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 5085 transitions, 158215 flow [2023-01-28 04:23:35,834 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 04:23:35,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:23:35,834 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 04:23:35,839 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 04:23:36,039 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 04:23:36,039 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 04:23:36,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:23:36,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2024277337, now seen corresponding path program 7 times [2023-01-28 04:23:36,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:23:36,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27562297] [2023-01-28 04:23:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:23:36,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:23:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:23:36,315 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 04:23:36,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:23:36,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27562297] [2023-01-28 04:23:36,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27562297] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:23:36,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826043483] [2023-01-28 04:23:36,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:23:36,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:23:36,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:23:36,317 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 04:23:36,321 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 04:23:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:23:36,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 62 conjunts are in the unsatisfiable core [2023-01-28 04:23:36,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:23:36,526 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 04:23:36,552 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 04:23:36,580 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 04:23:36,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:23:36,664 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 04:23:36,678 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 04:23:36,695 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 04:23:36,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:23:36,723 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 04:23:36,731 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 04:23:36,735 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 04:23:36,758 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 04:23:36,766 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 04:23:36,772 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:23:36,772 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 04:23:36,777 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 04:23:36,791 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 04:23:36,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2023-01-28 04:23:36,796 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 04:23:36,832 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 04:23:36,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826043483] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:23:36,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:23:36,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 24 [2023-01-28 04:23:36,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144576976] [2023-01-28 04:23:36,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:23:36,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 04:23:36,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:23:36,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 04:23:36,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=338, Unknown=8, NotChecked=210, Total=650 [2023-01-28 04:23:36,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 274 [2023-01-28 04:23:36,836 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 04:23:36,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:23:36,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 274 [2023-01-28 04:23:36,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:23:37,683 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 04:24:57,620 INFO L130 PetriNetUnfolder]: 42628/64703 cut-off events. [2023-01-28 04:24:57,620 INFO L131 PetriNetUnfolder]: For 3126813/3129892 co-relation queries the response was YES. [2023-01-28 04:24:59,391 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 04:24:59,790 INFO L137 encePairwiseOnDemand]: 254/274 looper letters, 4221 selfloop transitions, 1594 changer transitions 2/5915 dead transitions. [2023-01-28 04:24:59,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 5915 transitions, 193403 flow [2023-01-28 04:24:59,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 04:24:59,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 04:24:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1520 transitions. [2023-01-28 04:24:59,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467153284671533 [2023-01-28 04:24:59,794 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1520 transitions. [2023-01-28 04:24:59,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1520 transitions. [2023-01-28 04:24:59,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:24:59,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1520 transitions. [2023-01-28 04:24:59,796 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 04:24:59,797 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 04:24:59,798 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 04:24:59,798 INFO L175 Difference]: Start difference. First operand has 535 places, 5085 transitions, 158215 flow. Second operand 16 states and 1520 transitions. [2023-01-28 04:24:59,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 5915 transitions, 193403 flow [2023-01-28 04:26:57,770 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 04:26:57,913 INFO L231 Difference]: Finished difference. Result has 535 places, 5642 transitions, 177489 flow [2023-01-28 04:26:57,917 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 04:26:57,917 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 503 predicate places. [2023-01-28 04:26:57,917 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 5642 transitions, 177489 flow [2023-01-28 04:26:57,918 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 04:26:57,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:26:57,918 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 04:26:57,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-01-28 04:26:58,121 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 04:26:58,121 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 04:26:58,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:26:58,121 INFO L85 PathProgramCache]: Analyzing trace with hash -776350493, now seen corresponding path program 8 times [2023-01-28 04:26:58,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:26:58,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042444974] [2023-01-28 04:26:58,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:26:58,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:26:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:26:58,360 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 04:26:58,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:26:58,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042444974] [2023-01-28 04:26:58,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042444974] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:26:58,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745006447] [2023-01-28 04:26:58,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:26:58,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:26:58,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:26:58,362 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 04:26:58,364 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 04:26:58,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:26:58,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:26:58,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-28 04:26:58,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:26:58,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:26:58,596 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 04:26:58,605 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 04:26:58,621 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 04:26:58,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:26:58,668 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:26:58,668 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 04:26:58,671 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 04:26:58,742 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 04:26:58,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745006447] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:26:58,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:26:58,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-01-28 04:26:58,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991748424] [2023-01-28 04:26:58,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:26:58,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 04:26:58,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:26:58,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 04:26:58,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=370, Unknown=1, NotChecked=0, Total=462 [2023-01-28 04:26:58,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 274 [2023-01-28 04:26:58,745 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 04:26:58,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:26:58,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 274 [2023-01-28 04:26:58,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:28:28,734 INFO L130 PetriNetUnfolder]: 43317/65800 cut-off events. [2023-01-28 04:28:28,734 INFO L131 PetriNetUnfolder]: For 3154877/3158299 co-relation queries the response was YES. [2023-01-28 04:28:30,402 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 04:28:30,790 INFO L137 encePairwiseOnDemand]: 266/274 looper letters, 4253 selfloop transitions, 1667 changer transitions 2/6020 dead transitions. [2023-01-28 04:28:30,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 6020 transitions, 199207 flow [2023-01-28 04:28:30,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 04:28:30,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 04:28:30,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1394 transitions. [2023-01-28 04:28:30,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39135317237507017 [2023-01-28 04:28:30,794 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1394 transitions. [2023-01-28 04:28:30,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1394 transitions. [2023-01-28 04:28:30,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:28:30,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1394 transitions. [2023-01-28 04:28:30,795 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 04:28:30,797 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 04:28:30,797 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 04:28:30,797 INFO L175 Difference]: Start difference. First operand has 535 places, 5642 transitions, 177489 flow. Second operand 13 states and 1394 transitions. [2023-01-28 04:28:30,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 6020 transitions, 199207 flow [2023-01-28 04:30:17,388 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 04:30:17,522 INFO L231 Difference]: Finished difference. Result has 548 places, 5722 transitions, 183148 flow [2023-01-28 04:30:17,525 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 04:30:17,526 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 516 predicate places. [2023-01-28 04:30:17,526 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 5722 transitions, 183148 flow [2023-01-28 04:30:17,526 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 04:30:17,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:30:17,526 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 04:30:17,532 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 04:30:17,729 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 04:30:17,729 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 04:30:17,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:30:17,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1171616155, now seen corresponding path program 9 times [2023-01-28 04:30:17,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:30:17,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312815721] [2023-01-28 04:30:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:30:17,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:30:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:30:18,025 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 04:30:18,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:30:18,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312815721] [2023-01-28 04:30:18,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312815721] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:30:18,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163206018] [2023-01-28 04:30:18,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:30:18,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:30:18,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:30:18,029 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 04:30:18,031 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 04:30:18,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:30:18,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:30:18,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 52 conjunts are in the unsatisfiable core [2023-01-28 04:30:18,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:30:18,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:30:18,305 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 04:30:18,332 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 04:30:18,347 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 04:30:18,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:30:18,397 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 04:30:18,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:30:18,404 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 04:30:18,407 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 04:30:18,474 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 04:30:18,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163206018] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:30:18,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:30:18,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-01-28 04:30:18,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367388791] [2023-01-28 04:30:18,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:30:18,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 04:30:18,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:30:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 04:30:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=373, Unknown=2, NotChecked=40, Total=506 [2023-01-28 04:30:18,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 274 [2023-01-28 04:30:18,478 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 04:30:18,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:30:18,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 274 [2023-01-28 04:30:18,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-01-28 04:31:28,653 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 04:31:28,653 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 04:31:29,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-01-28 04:31:29,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-28 04:31:30,288 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 04:31:30,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-28 04:31:30,289 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-28 04:31:30,290 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 04:31:30,290 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 04:31:30,290 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 04:31:30,290 INFO L445 BasicCegarLoop]: Path program histogram: [9, 6, 5, 1, 1, 1, 1, 1] [2023-01-28 04:31:30,292 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 04:31:30,292 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 04:31:30,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 04:31:30 BasicIcfg [2023-01-28 04:31:30,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 04:31:30,294 INFO L158 Benchmark]: Toolchain (without parser) took 817473.44ms. Allocated memory was 337.6MB in the beginning and 7.4GB in the end (delta: 7.0GB). Free memory was 287.7MB in the beginning and 4.8GB in the end (delta: -4.5GB). Peak memory consumption was 6.7GB. Max. memory is 16.0GB. [2023-01-28 04:31:30,294 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:31:30,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.20ms. Allocated memory is still 337.6MB. Free memory was 287.5MB in the beginning and 275.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 04:31:30,294 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.08ms. Allocated memory is still 337.6MB. Free memory was 275.7MB in the beginning and 273.4MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 04:31:30,294 INFO L158 Benchmark]: Boogie Preprocessor took 18.27ms. Allocated memory is still 337.6MB. Free memory was 273.4MB in the beginning and 271.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:31:30,295 INFO L158 Benchmark]: RCFGBuilder took 572.67ms. Allocated memory is still 337.6MB. Free memory was 271.8MB in the beginning and 288.8MB in the end (delta: -17.1MB). Peak memory consumption was 17.7MB. Max. memory is 16.0GB. [2023-01-28 04:31:30,295 INFO L158 Benchmark]: TraceAbstraction took 816698.56ms. Allocated memory was 337.6MB in the beginning and 7.4GB in the end (delta: 7.0GB). Free memory was 288.2MB in the beginning and 4.8GB in the end (delta: -4.5GB). Peak memory consumption was 6.7GB. Max. memory is 16.0GB. [2023-01-28 04:31:30,296 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 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 155.20ms. Allocated memory is still 337.6MB. Free memory was 287.5MB in the beginning and 275.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.08ms. Allocated memory is still 337.6MB. Free memory was 275.7MB in the beginning and 273.4MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.27ms. Allocated memory is still 337.6MB. Free memory was 273.4MB in the beginning and 271.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 572.67ms. Allocated memory is still 337.6MB. Free memory was 271.8MB in the beginning and 288.8MB in the end (delta: -17.1MB). Peak memory consumption was 17.7MB. Max. memory is 16.0GB. * TraceAbstraction took 816698.56ms. Allocated memory was 337.6MB in the beginning and 7.4GB in the end (delta: 7.0GB). Free memory was 288.2MB in the beginning and 4.8GB in the end (delta: -4.5GB). Peak memory consumption was 6.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 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 Executor. - 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 Executor. - 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 Executor. - 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 Executor. - 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: 816.6s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 794.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4115 SdHoareTripleChecker+Valid, 9.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4115 mSDsluCounter, 1184 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1523 IncrementalHoareTripleChecker+Unchecked, 1048 mSDsCounter, 247 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20598 IncrementalHoareTripleChecker+Invalid, 22368 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 247 mSolverCounterUnsat, 136 mSDtfsCounter, 20598 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, 11.1s 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, 1.1s SatisfiabilityAnalysisTime, 11.1s 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