/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-mts.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 04:45:55,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 04:45:55,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 04:45:55,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 04:45:55,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 04:45:55,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 04:45:55,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 04:45:55,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 04:45:55,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 04:45:55,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 04:45:55,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 04:45:56,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 04:45:56,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 04:45:56,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 04:45:56,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 04:45:56,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 04:45:56,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 04:45:56,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 04:45:56,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 04:45:56,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 04:45:56,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 04:45:56,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 04:45:56,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 04:45:56,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 04:45:56,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 04:45:56,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 04:45:56,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 04:45:56,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 04:45:56,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 04:45:56,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 04:45:56,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 04:45:56,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 04:45:56,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 04:45:56,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 04:45:56,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 04:45:56,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 04:45:56,025 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 04:45:56,045 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 04:45:56,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 04:45:56,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 04:45:56,046 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 04:45:56,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 04:45:56,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 04:45:56,047 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 04:45:56,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 04:45:56,047 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 04:45:56,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 04:45:56,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 04:45:56,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 04:45:56,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 04:45:56,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 04:45:56,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 04:45:56,048 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 04:45:56,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 04:45:56,048 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 04:45:56,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 04:45:56,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 04:45:56,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 04:45:56,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 04:45:56,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 04:45:56,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:45:56,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 04:45:56,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 04:45:56,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 04:45:56,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 04:45:56,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 04:45:56,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 04:45:56,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 04:45:56,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 04:45:56,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 04:45:56,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 04:45:56,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 04:45:56,203 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 04:45:56,204 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 04:45:56,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-01-28 04:45:57,157 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 04:45:57,322 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 04:45:57,322 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-01-28 04:45:57,327 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab3bf6a53/095d2912631a4fe39a204daf956f2de9/FLAGba63bdbda [2023-01-28 04:45:57,337 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab3bf6a53/095d2912631a4fe39a204daf956f2de9 [2023-01-28 04:45:57,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 04:45:57,340 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 04:45:57,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 04:45:57,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 04:45:57,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 04:45:57,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:45:57" (1/1) ... [2023-01-28 04:45:57,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@833ce6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:45:57, skipping insertion in model container [2023-01-28 04:45:57,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:45:57" (1/1) ... [2023-01-28 04:45:57,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 04:45:57,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 04:45:57,464 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-mts.wvr.c[2533,2546] [2023-01-28 04:45:57,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:45:57,475 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 04:45:57,489 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-mts.wvr.c[2533,2546] [2023-01-28 04:45:57,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:45:57,496 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:45:57,496 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:45:57,500 INFO L208 MainTranslator]: Completed translation [2023-01-28 04:45:57,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:45:57 WrapperNode [2023-01-28 04:45:57,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 04:45:57,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 04:45:57,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 04:45:57,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 04:45:57,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:45:57" (1/1) ... [2023-01-28 04:45:57,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:45:57" (1/1) ... [2023-01-28 04:45:57,538 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 228 [2023-01-28 04:45:57,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 04:45:57,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 04:45:57,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 04:45:57,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 04:45:57,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:45:57" (1/1) ... [2023-01-28 04:45:57,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:45:57" (1/1) ... [2023-01-28 04:45:57,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:45:57" (1/1) ... [2023-01-28 04:45:57,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:45:57" (1/1) ... [2023-01-28 04:45:57,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:45:57" (1/1) ... [2023-01-28 04:45:57,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:45:57" (1/1) ... [2023-01-28 04:45:57,557 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:45:57" (1/1) ... [2023-01-28 04:45:57,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:45:57" (1/1) ... [2023-01-28 04:45:57,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 04:45:57,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 04:45:57,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 04:45:57,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 04:45:57,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:45:57" (1/1) ... [2023-01-28 04:45:57,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:45:57,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:45:57,582 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 04:45:57,587 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 04:45:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 04:45:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 04:45:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 04:45:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 04:45:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 04:45:57,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 04:45:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 04:45:57,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 04:45:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 04:45:57,610 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 04:45:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 04:45:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 04:45:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 04:45:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 04:45:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 04:45:57,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 04:45:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 04:45:57,612 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 04:45:57,681 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 04:45:57,683 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 04:45:57,942 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 04:45:58,078 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 04:45:58,078 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 04:45:58,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:45:58 BoogieIcfgContainer [2023-01-28 04:45:58,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 04:45:58,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 04:45:58,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 04:45:58,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 04:45:58,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 04:45:57" (1/3) ... [2023-01-28 04:45:58,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479374ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:45:58, skipping insertion in model container [2023-01-28 04:45:58,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:45:57" (2/3) ... [2023-01-28 04:45:58,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479374ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:45:58, skipping insertion in model container [2023-01-28 04:45:58,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:45:58" (3/3) ... [2023-01-28 04:45:58,088 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2023-01-28 04:45:58,100 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 04:45:58,100 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 04:45:58,100 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 04:45:58,196 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 04:45:58,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 206 transitions, 436 flow [2023-01-28 04:45:58,318 INFO L130 PetriNetUnfolder]: 18/203 cut-off events. [2023-01-28 04:45:58,319 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:45:58,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 203 events. 18/203 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 295 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2023-01-28 04:45:58,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 206 transitions, 436 flow [2023-01-28 04:45:58,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 193 transitions, 404 flow [2023-01-28 04:45:58,341 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 04:45:58,348 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 193 transitions, 404 flow [2023-01-28 04:45:58,350 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 193 transitions, 404 flow [2023-01-28 04:45:58,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 193 transitions, 404 flow [2023-01-28 04:45:58,391 INFO L130 PetriNetUnfolder]: 18/193 cut-off events. [2023-01-28 04:45:58,392 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:45:58,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 193 events. 18/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 294 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2023-01-28 04:45:58,397 INFO L119 LiptonReduction]: Number of co-enabled transitions 7140 [2023-01-28 04:46:02,762 INFO L134 LiptonReduction]: Checked pairs total: 7215 [2023-01-28 04:46:02,762 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-01-28 04:46:02,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 04:46:02,775 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;@60273e70, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 04:46:02,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 04:46:02,779 INFO L130 PetriNetUnfolder]: 4/25 cut-off events. [2023-01-28 04:46:02,779 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:46:02,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:46:02,780 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 04:46:02,780 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 04:46:02,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:46:02,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1770190697, now seen corresponding path program 1 times [2023-01-28 04:46:02,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:46:02,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083179392] [2023-01-28 04:46:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:46:02,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:46:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:46:03,182 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 04:46:03,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:46:03,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083179392] [2023-01-28 04:46:03,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083179392] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:46:03,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:46:03,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 04:46:03,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881542668] [2023-01-28 04:46:03,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:46:03,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:46:03,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:46:03,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:46:03,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:46:03,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 415 [2023-01-28 04:46:03,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 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 04:46:03,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:46:03,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 415 [2023-01-28 04:46:03,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:46:03,296 INFO L130 PetriNetUnfolder]: 429/600 cut-off events. [2023-01-28 04:46:03,296 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-01-28 04:46:03,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 600 events. 429/600 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1989 event pairs, 246 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 1042. Up to 596 conditions per place. [2023-01-28 04:46:03,300 INFO L137 encePairwiseOnDemand]: 412/415 looper letters, 23 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-01-28 04:46:03,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 122 flow [2023-01-28 04:46:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:46:03,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:46:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-01-28 04:46:03,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41124497991967873 [2023-01-28 04:46:03,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-01-28 04:46:03,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-01-28 04:46:03,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:46:03,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-01-28 04:46:03,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 04:46:03,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 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 04:46:03,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 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 04:46:03,330 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 70 flow. Second operand 3 states and 512 transitions. [2023-01-28 04:46:03,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 122 flow [2023-01-28 04:46:03,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 04:46:03,335 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 70 flow [2023-01-28 04:46:03,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, 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=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-01-28 04:46:03,339 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-01-28 04:46:03,339 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 70 flow [2023-01-28 04:46:03,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 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 04:46:03,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:46:03,340 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 04:46:03,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 04:46:03,341 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 04:46:03,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:46:03,345 INFO L85 PathProgramCache]: Analyzing trace with hash 489192056, now seen corresponding path program 1 times [2023-01-28 04:46:03,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:46:03,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249313860] [2023-01-28 04:46:03,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:46:03,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:46:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:46:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:46:03,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:46:03,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249313860] [2023-01-28 04:46:03,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249313860] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:46:03,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879272440] [2023-01-28 04:46:03,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:46:03,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:46:03,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:46:03,463 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 04:46:03,500 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 04:46:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:46:03,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:46:03,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:46:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:46:03,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:46:03,676 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 04:46:03,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879272440] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:46:03,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:46:03,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-01-28 04:46:03,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745293701] [2023-01-28 04:46:03,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:46:03,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:46:03,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:46:03,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:46:03,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 04:46:03,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 415 [2023-01-28 04:46:03,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 0 states have call successors, (0), 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 04:46:03,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:46:03,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 415 [2023-01-28 04:46:03,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:46:03,813 INFO L130 PetriNetUnfolder]: 499/704 cut-off events. [2023-01-28 04:46:03,814 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 04:46:03,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 704 events. 499/704 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2415 event pairs, 124 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 1421. Up to 410 conditions per place. [2023-01-28 04:46:03,818 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 31 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-01-28 04:46:03,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 166 flow [2023-01-28 04:46:03,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:46:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:46:03,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 847 transitions. [2023-01-28 04:46:03,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4081927710843373 [2023-01-28 04:46:03,822 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 847 transitions. [2023-01-28 04:46:03,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 847 transitions. [2023-01-28 04:46:03,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:46:03,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 847 transitions. [2023-01-28 04:46:03,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.4) internal successors, (847), 5 states have internal predecessors, (847), 0 states have call successors, (0), 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 04:46:03,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 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 04:46:03,828 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 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 04:46:03,828 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 70 flow. Second operand 5 states and 847 transitions. [2023-01-28 04:46:03,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 166 flow [2023-01-28 04:46:03,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 162 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 04:46:03,830 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 89 flow [2023-01-28 04:46:03,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-01-28 04:46:03,831 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-01-28 04:46:03,831 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 89 flow [2023-01-28 04:46:03,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 0 states have call successors, (0), 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 04:46:03,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:46:03,832 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 04:46:03,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 04:46:04,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:46:04,038 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 04:46:04,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:46:04,038 INFO L85 PathProgramCache]: Analyzing trace with hash -96618323, now seen corresponding path program 1 times [2023-01-28 04:46:04,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:46:04,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006745440] [2023-01-28 04:46:04,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:46:04,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:46:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:46:04,201 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 04:46:04,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:46:04,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006745440] [2023-01-28 04:46:04,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006745440] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:46:04,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679367603] [2023-01-28 04:46:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:46:04,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:46:04,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:46:04,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:46:04,215 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 04:46:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:46:04,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:46:04,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:46:04,380 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 04:46:04,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:46:04,427 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 04:46:04,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679367603] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:46:04,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:46:04,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-01-28 04:46:04,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744825067] [2023-01-28 04:46:04,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:46:04,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 04:46:04,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:46:04,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 04:46:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-01-28 04:46:04,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 415 [2023-01-28 04:46:04,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 89 flow. Second operand has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 0 states have call successors, (0), 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 04:46:04,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:46:04,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 415 [2023-01-28 04:46:04,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:46:04,616 INFO L130 PetriNetUnfolder]: 698/1018 cut-off events. [2023-01-28 04:46:04,616 INFO L131 PetriNetUnfolder]: For 503/625 co-relation queries the response was YES. [2023-01-28 04:46:04,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2449 conditions, 1018 events. 698/1018 cut-off events. For 503/625 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3841 event pairs, 183 based on Foata normal form. 122/979 useless extension candidates. Maximal degree in co-relation 2430. Up to 430 conditions per place. [2023-01-28 04:46:04,620 INFO L137 encePairwiseOnDemand]: 406/415 looper letters, 58 selfloop transitions, 13 changer transitions 0/72 dead transitions. [2023-01-28 04:46:04,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 72 transitions, 363 flow [2023-01-28 04:46:04,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:46:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:46:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1309 transitions. [2023-01-28 04:46:04,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942771084337349 [2023-01-28 04:46:04,623 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1309 transitions. [2023-01-28 04:46:04,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1309 transitions. [2023-01-28 04:46:04,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:46:04,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1309 transitions. [2023-01-28 04:46:04,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 163.625) internal successors, (1309), 8 states have internal predecessors, (1309), 0 states have call successors, (0), 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 04:46:04,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 415.0) internal successors, (3735), 9 states have internal predecessors, (3735), 0 states have call successors, (0), 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 04:46:04,630 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 415.0) internal successors, (3735), 9 states have internal predecessors, (3735), 0 states have call successors, (0), 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 04:46:04,630 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 89 flow. Second operand 8 states and 1309 transitions. [2023-01-28 04:46:04,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 72 transitions, 363 flow [2023-01-28 04:46:04,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 72 transitions, 351 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 04:46:04,633 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 151 flow [2023-01-28 04:46:04,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=151, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-01-28 04:46:04,634 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-01-28 04:46:04,634 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 151 flow [2023-01-28 04:46:04,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 0 states have call successors, (0), 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 04:46:04,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:46:04,634 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 04:46:04,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 04:46:04,845 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,SelfDestructingSolverStorable2 [2023-01-28 04:46:04,846 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 04:46:04,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:46:04,846 INFO L85 PathProgramCache]: Analyzing trace with hash -764145909, now seen corresponding path program 1 times [2023-01-28 04:46:04,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:46:04,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411289869] [2023-01-28 04:46:04,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:46:04,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:46:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:46:06,201 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 04:46:06,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:46:06,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411289869] [2023-01-28 04:46:06,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411289869] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:46:06,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152152719] [2023-01-28 04:46:06,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:46:06,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:46:06,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:46:06,203 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 04:46:06,209 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 04:46:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:46:06,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 72 conjunts are in the unsatisfiable core [2023-01-28 04:46:06,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:46:06,357 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 04:46:06,435 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 04:46:06,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:46:06,616 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 04:46:06,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:46:06,816 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 50 treesize of output 44 [2023-01-28 04:46:06,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:06,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 56 [2023-01-28 04:46:07,311 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 04:46:07,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:46:07,966 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~sum~0 c_~mts2~0))) (and (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse0 (+ c_~mts3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4)))))) (or (= c_~mts1~0 .cse0) (<= c_~N~0 ~M~0) (< .cse0 0) (< (+ ~M~0 1) c_~N~0)))) (< c_~mts3~0 .cse1)) (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (= c_~mts1~0 (+ c_~sum~0 .cse2 c_~mts2~0)) (<= c_~N~0 ~M~0) (< (+ c_~mts3~0 .cse2) 0) (< (+ ~M~0 1) c_~N~0)))) (<= .cse1 c_~mts3~0)) (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (let ((.cse3 (+ c_~sum~0 .cse4 c_~mts2~0))) (or (= c_~mts1~0 .cse3) (<= 0 (+ c_~mts3~0 .cse4)) (<= c_~N~0 ~M~0) (<= .cse3 0) (< (+ ~M~0 1) c_~N~0))))) (or (forall ((~M~0 Int) (v_ArrVal_157 (Array Int Int))) (let ((.cse5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_157) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (<= 0 (+ c_~mts3~0 .cse5)) (< 0 (+ c_~sum~0 .cse5 c_~mts2~0)) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0)))) (= c_~mts1~0 0)))) is different from false [2023-01-28 04:46:16,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:16,031 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 145 treesize of output 97 [2023-01-28 04:46:16,059 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:16,061 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 2942 treesize of output 2806 [2023-01-28 04:46:16,106 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:16,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 190 [2023-01-28 04:46:16,122 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:16,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 147 [2023-01-28 04:46:16,137 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 161 treesize of output 113 [2023-01-28 04:46:16,609 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:16,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 82 [2023-01-28 04:46:16,614 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:46:16,614 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:46:16,621 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:46:16,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 99 [2023-01-28 04:46:16,655 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:46:16,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2023-01-28 04:46:16,670 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:16,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 60 [2023-01-28 04:46:16,675 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:46:16,675 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:46:16,685 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:46:16,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 74 [2023-01-28 04:46:16,700 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:46:16,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2023-01-28 04:46:16,722 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:16,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 83 [2023-01-28 04:46:16,727 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:46:16,727 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:46:16,733 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:46:16,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 101 [2023-01-28 04:46:16,754 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:46:16,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 43 [2023-01-28 04:46:16,774 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:16,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 94 [2023-01-28 04:46:16,780 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:46:16,780 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:46:16,787 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:46:16,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 149 [2023-01-28 04:46:16,800 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:46:16,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 44 [2023-01-28 04:46:16,834 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:16,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 93 [2023-01-28 04:46:16,839 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:46:16,840 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:46:16,847 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:46:16,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 181 treesize of output 145 [2023-01-28 04:46:16,861 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:46:16,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 43 [2023-01-28 04:46:16,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:16,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 117 [2023-01-28 04:46:16,896 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:46:16,896 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:46:16,903 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:46:16,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 176 [2023-01-28 04:46:16,935 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:46:16,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 54 [2023-01-28 04:46:17,046 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 04:46:17,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152152719] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:46:17,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:46:17,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 32 [2023-01-28 04:46:17,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041959263] [2023-01-28 04:46:17,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:46:17,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 04:46:17,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:46:17,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 04:46:17,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=863, Unknown=4, NotChecked=62, Total=1122 [2023-01-28 04:46:17,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 415 [2023-01-28 04:46:17,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 151 flow. Second operand has 34 states, 34 states have (on average 120.02941176470588) internal successors, (4081), 34 states have internal predecessors, (4081), 0 states have call successors, (0), 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 04:46:17,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:46:17,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 415 [2023-01-28 04:46:17,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:46:18,914 INFO L130 PetriNetUnfolder]: 1406/2083 cut-off events. [2023-01-28 04:46:18,914 INFO L131 PetriNetUnfolder]: For 1980/2058 co-relation queries the response was YES. [2023-01-28 04:46:18,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6446 conditions, 2083 events. 1406/2083 cut-off events. For 1980/2058 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9413 event pairs, 171 based on Foata normal form. 79/2066 useless extension candidates. Maximal degree in co-relation 5714. Up to 1166 conditions per place. [2023-01-28 04:46:18,924 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 112 selfloop transitions, 40 changer transitions 3/157 dead transitions. [2023-01-28 04:46:18,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 157 transitions, 943 flow [2023-01-28 04:46:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 04:46:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 04:46:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1666 transitions. [2023-01-28 04:46:18,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3088044485634847 [2023-01-28 04:46:18,928 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1666 transitions. [2023-01-28 04:46:18,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1666 transitions. [2023-01-28 04:46:18,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:46:18,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1666 transitions. [2023-01-28 04:46:18,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 128.15384615384616) internal successors, (1666), 13 states have internal predecessors, (1666), 0 states have call successors, (0), 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 04:46:18,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 415.0) internal successors, (5810), 14 states have internal predecessors, (5810), 0 states have call successors, (0), 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 04:46:18,937 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 415.0) internal successors, (5810), 14 states have internal predecessors, (5810), 0 states have call successors, (0), 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 04:46:18,937 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 151 flow. Second operand 13 states and 1666 transitions. [2023-01-28 04:46:18,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 157 transitions, 943 flow [2023-01-28 04:46:18,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 157 transitions, 916 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-01-28 04:46:18,943 INFO L231 Difference]: Finished difference. Result has 57 places, 71 transitions, 446 flow [2023-01-28 04:46:18,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=446, PETRI_PLACES=57, PETRI_TRANSITIONS=71} [2023-01-28 04:46:18,943 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2023-01-28 04:46:18,944 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 71 transitions, 446 flow [2023-01-28 04:46:18,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 120.02941176470588) internal successors, (4081), 34 states have internal predecessors, (4081), 0 states have call successors, (0), 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 04:46:18,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:46:18,945 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 04:46:18,956 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 04:46:19,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:46:19,153 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 04:46:19,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:46:19,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1577393381, now seen corresponding path program 2 times [2023-01-28 04:46:19,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:46:19,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661691571] [2023-01-28 04:46:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:46:19,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:46:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:46:20,045 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 04:46:20,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:46:20,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661691571] [2023-01-28 04:46:20,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661691571] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:46:20,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902672585] [2023-01-28 04:46:20,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:46:20,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:46:20,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:46:20,048 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 04:46:20,050 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 04:46:20,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:46:20,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:46:20,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 48 conjunts are in the unsatisfiable core [2023-01-28 04:46:20,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:46:20,584 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:20,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 111 [2023-01-28 04:46:20,962 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 04:46:20,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:46:21,578 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:21,579 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 129 treesize of output 65 [2023-01-28 04:46:21,621 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:46:21,622 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 112 treesize of output 52 [2023-01-28 04:46:21,931 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 04:46:21,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902672585] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:46:21,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:46:21,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 32 [2023-01-28 04:46:21,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266615565] [2023-01-28 04:46:21,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:46:21,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 04:46:21,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:46:21,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 04:46:21,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2023-01-28 04:46:21,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 415 [2023-01-28 04:46:21,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 71 transitions, 446 flow. Second operand has 34 states, 34 states have (on average 123.11764705882354) internal successors, (4186), 34 states have internal predecessors, (4186), 0 states have call successors, (0), 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 04:46:21,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:46:21,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 415 [2023-01-28 04:46:21,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:46:23,255 INFO L130 PetriNetUnfolder]: 1672/2503 cut-off events. [2023-01-28 04:46:23,255 INFO L131 PetriNetUnfolder]: For 4153/4153 co-relation queries the response was YES. [2023-01-28 04:46:23,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9012 conditions, 2503 events. 1672/2503 cut-off events. For 4153/4153 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10816 event pairs, 295 based on Foata normal form. 1/2504 useless extension candidates. Maximal degree in co-relation 8516. Up to 1996 conditions per place. [2023-01-28 04:46:23,269 INFO L137 encePairwiseOnDemand]: 402/415 looper letters, 103 selfloop transitions, 71 changer transitions 6/180 dead transitions. [2023-01-28 04:46:23,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 180 transitions, 1342 flow [2023-01-28 04:46:23,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 04:46:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 04:46:23,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2049 transitions. [2023-01-28 04:46:23,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3085843373493976 [2023-01-28 04:46:23,275 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2049 transitions. [2023-01-28 04:46:23,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2049 transitions. [2023-01-28 04:46:23,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:46:23,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2049 transitions. [2023-01-28 04:46:23,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 128.0625) internal successors, (2049), 16 states have internal predecessors, (2049), 0 states have call successors, (0), 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 04:46:23,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 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 04:46:23,287 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 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 04:46:23,287 INFO L175 Difference]: Start difference. First operand has 57 places, 71 transitions, 446 flow. Second operand 16 states and 2049 transitions. [2023-01-28 04:46:23,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 180 transitions, 1342 flow [2023-01-28 04:46:23,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 180 transitions, 1315 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-28 04:46:23,298 INFO L231 Difference]: Finished difference. Result has 79 places, 120 transitions, 987 flow [2023-01-28 04:46:23,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=987, PETRI_PLACES=79, PETRI_TRANSITIONS=120} [2023-01-28 04:46:23,299 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 47 predicate places. [2023-01-28 04:46:23,300 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 120 transitions, 987 flow [2023-01-28 04:46:23,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 123.11764705882354) internal successors, (4186), 34 states have internal predecessors, (4186), 0 states have call successors, (0), 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 04:46:23,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:46:23,301 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 04:46:23,311 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 04:46:23,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:46:23,506 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 04:46:23,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:46:23,507 INFO L85 PathProgramCache]: Analyzing trace with hash 717847813, now seen corresponding path program 3 times [2023-01-28 04:46:23,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:46:23,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292669814] [2023-01-28 04:46:23,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:46:23,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:46:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:46:24,656 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 04:46:24,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:46:24,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292669814] [2023-01-28 04:46:24,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292669814] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:46:24,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429140086] [2023-01-28 04:46:24,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:46:24,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:46:24,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:46:24,658 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 04:46:24,660 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 04:46:24,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:46:24,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:46:24,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 67 conjunts are in the unsatisfiable core [2023-01-28 04:46:24,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:46:25,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:46:25,037 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 04:46:25,432 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:25,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 111 [2023-01-28 04:46:25,844 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 04:46:25,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:46:28,036 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:28,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 148 treesize of output 132 [2023-01-28 04:46:28,041 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 96 treesize of output 90 [2023-01-28 04:46:28,045 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 90 treesize of output 78 [2023-01-28 04:46:28,298 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:28,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 724 treesize of output 708 [2023-01-28 04:46:28,327 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:28,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 529 treesize of output 520 [2023-01-28 04:46:28,362 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:28,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 511 treesize of output 502 [2023-01-28 04:46:28,401 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:28,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 493 treesize of output 484 [2023-01-28 04:46:28,431 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:28,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 475 treesize of output 460 [2023-01-28 04:46:28,465 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:28,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 451 treesize of output 442 [2023-01-28 04:46:28,500 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:28,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 433 treesize of output 412 [2023-01-28 04:46:40,166 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 04:46:40,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429140086] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:46:40,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:46:40,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 37 [2023-01-28 04:46:40,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969078028] [2023-01-28 04:46:40,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:46:40,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-01-28 04:46:40,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:46:40,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-01-28 04:46:40,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1243, Unknown=2, NotChecked=0, Total=1482 [2023-01-28 04:46:40,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 415 [2023-01-28 04:46:40,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 120 transitions, 987 flow. Second operand has 39 states, 39 states have (on average 112.84615384615384) internal successors, (4401), 39 states have internal predecessors, (4401), 0 states have call successors, (0), 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 04:46:40,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:46:40,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 415 [2023-01-28 04:46:40,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:46:47,157 INFO L130 PetriNetUnfolder]: 2511/3780 cut-off events. [2023-01-28 04:46:47,157 INFO L131 PetriNetUnfolder]: For 11506/11506 co-relation queries the response was YES. [2023-01-28 04:46:47,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16403 conditions, 3780 events. 2511/3780 cut-off events. For 11506/11506 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18189 event pairs, 321 based on Foata normal form. 2/3782 useless extension candidates. Maximal degree in co-relation 16116. Up to 2512 conditions per place. [2023-01-28 04:46:47,179 INFO L137 encePairwiseOnDemand]: 399/415 looper letters, 218 selfloop transitions, 233 changer transitions 9/460 dead transitions. [2023-01-28 04:46:47,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 460 transitions, 4074 flow [2023-01-28 04:46:47,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-28 04:46:47,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-01-28 04:46:47,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4641 transitions. [2023-01-28 04:46:47,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28674698795180725 [2023-01-28 04:46:47,194 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 4641 transitions. [2023-01-28 04:46:47,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 4641 transitions. [2023-01-28 04:46:47,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:46:47,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 4641 transitions. [2023-01-28 04:46:47,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 119.0) internal successors, (4641), 39 states have internal predecessors, (4641), 0 states have call successors, (0), 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 04:46:47,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 415.0) internal successors, (16600), 40 states have internal predecessors, (16600), 0 states have call successors, (0), 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 04:46:47,228 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 415.0) internal successors, (16600), 40 states have internal predecessors, (16600), 0 states have call successors, (0), 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 04:46:47,228 INFO L175 Difference]: Start difference. First operand has 79 places, 120 transitions, 987 flow. Second operand 39 states and 4641 transitions. [2023-01-28 04:46:47,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 460 transitions, 4074 flow [2023-01-28 04:46:47,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 460 transitions, 4045 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-28 04:46:47,254 INFO L231 Difference]: Finished difference. Result has 138 places, 309 transitions, 3369 flow [2023-01-28 04:46:47,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3369, PETRI_PLACES=138, PETRI_TRANSITIONS=309} [2023-01-28 04:46:47,256 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 106 predicate places. [2023-01-28 04:46:47,256 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 309 transitions, 3369 flow [2023-01-28 04:46:47,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 112.84615384615384) internal successors, (4401), 39 states have internal predecessors, (4401), 0 states have call successors, (0), 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 04:46:47,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:46:47,258 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 04:46:47,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 04:46:47,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:46:47,465 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 04:46:47,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:46:47,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1798671641, now seen corresponding path program 4 times [2023-01-28 04:46:47,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:46:47,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786455374] [2023-01-28 04:46:47,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:46:47,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:46:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:46:48,368 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 04:46:48,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:46:48,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786455374] [2023-01-28 04:46:48,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786455374] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:46:48,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786744323] [2023-01-28 04:46:48,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:46:48,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:46:48,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:46:48,369 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 04:46:48,371 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 04:46:48,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:46:48,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:46:48,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 04:46:48,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:46:49,001 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-28 04:46:49,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 99 [2023-01-28 04:46:49,172 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 04:46:49,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:46:49,771 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:49,771 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 152 treesize of output 72 [2023-01-28 04:46:49,813 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:46:49,813 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 222 treesize of output 98 [2023-01-28 04:46:50,248 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 04:46:50,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786744323] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:46:50,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:46:50,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 34 [2023-01-28 04:46:50,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103066349] [2023-01-28 04:46:50,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:46:50,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-01-28 04:46:50,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:46:50,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-01-28 04:46:50,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1048, Unknown=0, NotChecked=0, Total=1260 [2023-01-28 04:46:50,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 415 [2023-01-28 04:46:50,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 309 transitions, 3369 flow. Second operand has 36 states, 36 states have (on average 113.0) internal successors, (4068), 36 states have internal predecessors, (4068), 0 states have call successors, (0), 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 04:46:50,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:46:50,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 415 [2023-01-28 04:46:50,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:46:51,754 INFO L130 PetriNetUnfolder]: 2783/4198 cut-off events. [2023-01-28 04:46:51,754 INFO L131 PetriNetUnfolder]: For 26469/26469 co-relation queries the response was YES. [2023-01-28 04:46:51,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23647 conditions, 4198 events. 2783/4198 cut-off events. For 26469/26469 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 20583 event pairs, 395 based on Foata normal form. 2/4200 useless extension candidates. Maximal degree in co-relation 23292. Up to 3056 conditions per place. [2023-01-28 04:46:51,787 INFO L137 encePairwiseOnDemand]: 400/415 looper letters, 178 selfloop transitions, 284 changer transitions 6/468 dead transitions. [2023-01-28 04:46:51,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 468 transitions, 5900 flow [2023-01-28 04:46:51,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 04:46:51,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 04:46:51,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1890 transitions. [2023-01-28 04:46:51,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28463855421686746 [2023-01-28 04:46:51,791 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1890 transitions. [2023-01-28 04:46:51,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1890 transitions. [2023-01-28 04:46:51,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:46:51,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1890 transitions. [2023-01-28 04:46:51,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 118.125) internal successors, (1890), 16 states have internal predecessors, (1890), 0 states have call successors, (0), 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 04:46:51,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 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 04:46:51,799 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 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 04:46:51,799 INFO L175 Difference]: Start difference. First operand has 138 places, 309 transitions, 3369 flow. Second operand 16 states and 1890 transitions. [2023-01-28 04:46:51,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 468 transitions, 5900 flow [2023-01-28 04:46:51,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 468 transitions, 5366 flow, removed 136 selfloop flow, removed 12 redundant places. [2023-01-28 04:46:51,900 INFO L231 Difference]: Finished difference. Result has 151 places, 410 transitions, 5062 flow [2023-01-28 04:46:51,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5062, PETRI_PLACES=151, PETRI_TRANSITIONS=410} [2023-01-28 04:46:51,901 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2023-01-28 04:46:51,901 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 410 transitions, 5062 flow [2023-01-28 04:46:51,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 113.0) internal successors, (4068), 36 states have internal predecessors, (4068), 0 states have call successors, (0), 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 04:46:51,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:46:51,902 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 04:46:51,907 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 04:46:52,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:46:52,107 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 04:46:52,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:46:52,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1817816611, now seen corresponding path program 5 times [2023-01-28 04:46:52,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:46:52,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57546162] [2023-01-28 04:46:52,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:46:52,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:46:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:46:53,051 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 04:46:53,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:46:53,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57546162] [2023-01-28 04:46:53,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57546162] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:46:53,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772442215] [2023-01-28 04:46:53,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:46:53,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:46:53,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:46:53,052 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 04:46:53,053 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 04:46:53,130 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 04:46:53,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:46:53,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-28 04:46:53,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:46:53,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:46:53,293 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 04:46:53,644 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-28 04:46:53,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 99 [2023-01-28 04:46:53,802 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 04:46:53,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:46:55,886 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:55,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 750 treesize of output 767 [2023-01-28 04:46:55,939 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:55,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 542 treesize of output 533 [2023-01-28 04:46:55,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:55,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 524 treesize of output 515 [2023-01-28 04:46:56,008 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:56,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 506 treesize of output 491 [2023-01-28 04:46:56,043 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:46:56,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 482 treesize of output 473 [2023-01-28 04:46:56,071 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 464 treesize of output 458 [2023-01-28 04:46:56,098 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 458 treesize of output 446 [2023-01-28 04:46:56,125 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 446 treesize of output 434 [2023-01-28 04:47:22,560 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:47:57,948 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:48:21,771 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:48:35,571 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:49:14,022 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:49:37,565 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:52:16,063 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:55:49,869 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:57:30,894 WARN L222 SmtUtils]: Spent 12.80s on a formula simplification. DAG size of input: 1984 DAG size of output: 2011 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 05:00:05,058 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 05:00:05,059 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 05:00:05,063 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 05:00:05,066 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 05:00:05,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 05:00:05,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:00:05,260 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 0ms.. [2023-01-28 05:00:05,261 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 05:00:05,261 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 05:00:05,262 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 05:00:05,262 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2023-01-28 05:00:05,264 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 05:00:05,264 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 05:00:05,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 05:00:05 BasicIcfg [2023-01-28 05:00:05,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 05:00:05,266 INFO L158 Benchmark]: Toolchain (without parser) took 847926.22ms. Allocated memory was 492.8MB in the beginning and 1.2GB in the end (delta: 738.2MB). Free memory was 452.8MB in the beginning and 967.9MB in the end (delta: -515.1MB). Peak memory consumption was 758.7MB. Max. memory is 16.0GB. [2023-01-28 05:00:05,266 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 354.4MB. Free memory is still 302.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:00:05,266 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.56ms. Allocated memory is still 492.8MB. Free memory was 452.8MB in the beginning and 440.8MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 05:00:05,266 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.20ms. Allocated memory is still 492.8MB. Free memory was 440.8MB in the beginning and 438.3MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 05:00:05,267 INFO L158 Benchmark]: Boogie Preprocessor took 20.32ms. Allocated memory is still 492.8MB. Free memory was 438.3MB in the beginning and 436.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:00:05,267 INFO L158 Benchmark]: RCFGBuilder took 522.45ms. Allocated memory is still 492.8MB. Free memory was 436.6MB in the beginning and 399.2MB in the end (delta: 37.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-01-28 05:00:05,267 INFO L158 Benchmark]: TraceAbstraction took 847181.59ms. Allocated memory was 492.8MB in the beginning and 1.2GB in the end (delta: 738.2MB). Free memory was 398.5MB in the beginning and 967.9MB in the end (delta: -569.4MB). Peak memory consumption was 704.1MB. Max. memory is 16.0GB. [2023-01-28 05:00:05,268 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 354.4MB. Free memory is still 302.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 160.56ms. Allocated memory is still 492.8MB. Free memory was 452.8MB in the beginning and 440.8MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.20ms. Allocated memory is still 492.8MB. Free memory was 440.8MB in the beginning and 438.3MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.32ms. Allocated memory is still 492.8MB. Free memory was 438.3MB in the beginning and 436.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 522.45ms. Allocated memory is still 492.8MB. Free memory was 436.6MB in the beginning and 399.2MB in the end (delta: 37.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * TraceAbstraction took 847181.59ms. Allocated memory was 492.8MB in the beginning and 1.2GB in the end (delta: 738.2MB). Free memory was 398.5MB in the beginning and 967.9MB in the end (delta: -569.4MB). Peak memory consumption was 704.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 185 PlacesBefore, 32 PlacesAfterwards, 193 TransitionsBefore, 26 TransitionsAfterwards, 7140 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 28 ConcurrentYvCompositions, 14 ChoiceCompositions, 209 TotalNumberOfCompositions, 7215 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6742, independent: 6707, independent conditional: 0, independent unconditional: 6707, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4193, independent: 4170, independent conditional: 0, independent unconditional: 4170, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6742, independent: 2537, independent conditional: 0, independent unconditional: 2537, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 4193, unknown conditional: 0, unknown unconditional: 4193] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 0ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 0ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 0ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 25 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 273 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: 847.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 12.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1022 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1022 mSDsluCounter, 306 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 128 IncrementalHoareTripleChecker+Unchecked, 270 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5702 IncrementalHoareTripleChecker+Invalid, 5886 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 36 mSDtfsCounter, 5702 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 391 GetRequests, 170 SyntacticMatches, 5 SemanticMatches, 216 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 16.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5062occurred in iteration=7, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 34.6s InterpolantComputationTime, 300 NumberOfCodeBlocks, 300 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 421 ConstructedInterpolants, 20 QuantifiedInterpolants, 16359 SizeOfPredicates, 140 NumberOfNonLiveVariables, 1455 ConjunctsInSsa, 257 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 7/45 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