/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 11:50:56,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 11:50:56,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 11:50:56,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 11:50:56,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 11:50:56,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 11:50:56,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 11:50:56,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 11:50:56,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 11:50:56,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 11:50:56,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 11:50:56,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 11:50:56,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 11:50:56,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 11:50:56,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 11:50:56,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 11:50:56,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 11:50:56,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 11:50:56,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 11:50:56,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 11:50:56,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 11:50:56,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 11:50:56,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 11:50:56,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 11:50:56,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 11:50:56,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 11:50:56,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 11:50:56,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 11:50:56,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 11:50:56,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 11:50:56,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 11:50:56,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 11:50:56,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 11:50:56,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 11:50:56,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 11:50:56,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 11:50:56,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 11:50:56,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 11:50:56,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 11:50:56,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 11:50:56,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 11:50:56,471 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 11:50:56,495 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 11:50:56,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 11:50:56,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 11:50:56,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 11:50:56,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 11:50:56,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 11:50:56,497 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 11:50:56,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 11:50:56,497 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 11:50:56,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 11:50:56,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 11:50:56,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 11:50:56,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 11:50:56,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 11:50:56,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 11:50:56,498 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 11:50:56,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 11:50:56,499 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 11:50:56,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 11:50:56,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 11:50:56,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 11:50:56,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 11:50:56,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 11:50:56,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:50:56,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 11:50:56,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 11:50:56,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 11:50:56,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 11:50:56,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 11:50:56,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 11:50:56,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 11:50:56,500 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 11:50:56,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 11:50:56,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 11:50:56,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 11:50:56,719 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 11:50:56,720 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 11:50:56,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2023-01-28 11:50:57,670 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 11:50:57,803 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 11:50:57,804 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2023-01-28 11:50:57,808 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33d2e7c3f/6f90835d1f374c7899cf6471e74e0bd7/FLAG07baec8ab [2023-01-28 11:50:57,823 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33d2e7c3f/6f90835d1f374c7899cf6471e74e0bd7 [2023-01-28 11:50:57,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 11:50:57,826 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 11:50:57,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 11:50:57,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 11:50:57,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 11:50:57,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:50:57" (1/1) ... [2023-01-28 11:50:57,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a09de89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:50:57, skipping insertion in model container [2023-01-28 11:50:57,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:50:57" (1/1) ... [2023-01-28 11:50:57,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 11:50:57,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 11:50:58,002 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-three-array-sum.wvr.c[2691,2704] [2023-01-28 11:50:58,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:50:58,016 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 11:50:58,031 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-three-array-sum.wvr.c[2691,2704] [2023-01-28 11:50:58,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:50:58,038 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 11:50:58,039 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 11:50:58,043 INFO L208 MainTranslator]: Completed translation [2023-01-28 11:50:58,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:50:58 WrapperNode [2023-01-28 11:50:58,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 11:50:58,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 11:50:58,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 11:50:58,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 11:50:58,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:50:58" (1/1) ... [2023-01-28 11:50:58,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:50:58" (1/1) ... [2023-01-28 11:50:58,073 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 154 [2023-01-28 11:50:58,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 11:50:58,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 11:50:58,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 11:50:58,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 11:50:58,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:50:58" (1/1) ... [2023-01-28 11:50:58,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:50:58" (1/1) ... [2023-01-28 11:50:58,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:50:58" (1/1) ... [2023-01-28 11:50:58,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:50:58" (1/1) ... [2023-01-28 11:50:58,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:50:58" (1/1) ... [2023-01-28 11:50:58,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:50:58" (1/1) ... [2023-01-28 11:50:58,092 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:50:58" (1/1) ... [2023-01-28 11:50:58,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:50:58" (1/1) ... [2023-01-28 11:50:58,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 11:50:58,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 11:50:58,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 11:50:58,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 11:50:58,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:50:58" (1/1) ... [2023-01-28 11:50:58,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:50:58,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:50:58,131 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 11:50:58,133 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 11:50:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 11:50:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 11:50:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 11:50:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 11:50:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 11:50:58,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 11:50:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 11:50:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 11:50:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 11:50:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 11:50:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 11:50:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 11:50:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 11:50:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 11:50:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 11:50:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 11:50:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 11:50:58,174 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 11:50:58,279 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 11:50:58,280 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 11:50:58,524 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 11:50:58,545 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 11:50:58,545 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 11:50:58,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:50:58 BoogieIcfgContainer [2023-01-28 11:50:58,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 11:50:58,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 11:50:58,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 11:50:58,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 11:50:58,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 11:50:57" (1/3) ... [2023-01-28 11:50:58,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6379160f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:50:58, skipping insertion in model container [2023-01-28 11:50:58,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:50:58" (2/3) ... [2023-01-28 11:50:58,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6379160f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:50:58, skipping insertion in model container [2023-01-28 11:50:58,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:50:58" (3/3) ... [2023-01-28 11:50:58,552 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2023-01-28 11:50:58,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 11:50:58,563 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 11:50:58,563 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 11:50:58,609 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 11:50:58,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 212 transitions, 448 flow [2023-01-28 11:50:58,679 INFO L130 PetriNetUnfolder]: 20/209 cut-off events. [2023-01-28 11:50:58,680 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:50:58,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 20/209 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 152 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 170. Up to 3 conditions per place. [2023-01-28 11:50:58,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 212 transitions, 448 flow [2023-01-28 11:50:58,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 199 transitions, 416 flow [2023-01-28 11:50:58,690 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 11:50:58,696 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 199 transitions, 416 flow [2023-01-28 11:50:58,698 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 199 transitions, 416 flow [2023-01-28 11:50:58,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 199 transitions, 416 flow [2023-01-28 11:50:58,723 INFO L130 PetriNetUnfolder]: 20/199 cut-off events. [2023-01-28 11:50:58,723 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:50:58,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 199 events. 20/199 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 156 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 170. Up to 3 conditions per place. [2023-01-28 11:50:58,730 INFO L119 LiptonReduction]: Number of co-enabled transitions 1874 [2023-01-28 11:51:02,914 INFO L134 LiptonReduction]: Checked pairs total: 2518 [2023-01-28 11:51:02,915 INFO L136 LiptonReduction]: Total number of compositions: 204 [2023-01-28 11:51:02,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 11:51:02,928 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;@4848da6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 11:51:02,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 11:51:02,932 INFO L130 PetriNetUnfolder]: 7/30 cut-off events. [2023-01-28 11:51:02,932 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:51:02,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:51:02,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:51:02,933 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 11:51:02,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:51:02,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1140031693, now seen corresponding path program 1 times [2023-01-28 11:51:02,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:51:02,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086424903] [2023-01-28 11:51:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:51:02,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:51:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:51:03,604 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 11:51:03,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:51:03,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086424903] [2023-01-28 11:51:03,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086424903] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:51:03,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:51:03,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 11:51:03,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894670547] [2023-01-28 11:51:03,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:51:03,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 11:51:03,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:51:03,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 11:51:03,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 11:51:03,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 416 [2023-01-28 11:51:03,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:03,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:51:03,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 416 [2023-01-28 11:51:03,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:51:03,791 INFO L130 PetriNetUnfolder]: 727/977 cut-off events. [2023-01-28 11:51:03,791 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-01-28 11:51:03,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2026 conditions, 977 events. 727/977 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3462 event pairs, 114 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 1483. Up to 666 conditions per place. [2023-01-28 11:51:03,798 INFO L137 encePairwiseOnDemand]: 412/416 looper letters, 42 selfloop transitions, 3 changer transitions 1/49 dead transitions. [2023-01-28 11:51:03,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 223 flow [2023-01-28 11:51:03,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 11:51:03,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 11:51:03,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2023-01-28 11:51:03,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47996794871794873 [2023-01-28 11:51:03,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2023-01-28 11:51:03,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2023-01-28 11:51:03,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:51:03,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2023-01-28 11:51:03,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:03,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:03,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:03,829 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 3 states and 599 transitions. [2023-01-28 11:51:03,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 223 flow [2023-01-28 11:51:03,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 49 transitions, 201 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 11:51:03,834 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 87 flow [2023-01-28 11:51:03,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2023-01-28 11:51:03,837 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-01-28 11:51:03,837 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 87 flow [2023-01-28 11:51:03,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:03,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:51:03,838 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 11:51:03,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 11:51:03,838 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 11:51:03,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:51:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash -422331535, now seen corresponding path program 1 times [2023-01-28 11:51:03,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:51:03,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70776170] [2023-01-28 11:51:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:51:03,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:51:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:51:03,938 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 11:51:03,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:51:03,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70776170] [2023-01-28 11:51:03,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70776170] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:51:03,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:51:03,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 11:51:03,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600819314] [2023-01-28 11:51:03,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:51:03,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 11:51:03,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:51:03,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 11:51:03,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 11:51:03,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 416 [2023-01-28 11:51:03,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:03,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:51:03,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 416 [2023-01-28 11:51:03,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:51:04,121 INFO L130 PetriNetUnfolder]: 1303/1799 cut-off events. [2023-01-28 11:51:04,122 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2023-01-28 11:51:04,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3866 conditions, 1799 events. 1303/1799 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7215 event pairs, 578 based on Foata normal form. 50/1233 useless extension candidates. Maximal degree in co-relation 1767. Up to 1008 conditions per place. [2023-01-28 11:51:04,128 INFO L137 encePairwiseOnDemand]: 407/416 looper letters, 64 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2023-01-28 11:51:04,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 76 transitions, 341 flow [2023-01-28 11:51:04,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 11:51:04,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 11:51:04,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 776 transitions. [2023-01-28 11:51:04,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3730769230769231 [2023-01-28 11:51:04,130 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 776 transitions. [2023-01-28 11:51:04,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 776 transitions. [2023-01-28 11:51:04,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:51:04,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 776 transitions. [2023-01-28 11:51:04,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:04,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:04,135 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:04,135 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 87 flow. Second operand 5 states and 776 transitions. [2023-01-28 11:51:04,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 76 transitions, 341 flow [2023-01-28 11:51:04,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 76 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 11:51:04,137 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 150 flow [2023-01-28 11:51:04,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-01-28 11:51:04,137 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-01-28 11:51:04,137 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 150 flow [2023-01-28 11:51:04,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:04,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:51:04,138 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 11:51:04,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 11:51:04,138 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 11:51:04,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:51:04,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1087856233, now seen corresponding path program 1 times [2023-01-28 11:51:04,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:51:04,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127773415] [2023-01-28 11:51:04,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:51:04,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:51:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:51:04,200 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 11:51:04,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:51:04,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127773415] [2023-01-28 11:51:04,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127773415] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:51:04,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:51:04,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 11:51:04,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178188111] [2023-01-28 11:51:04,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:51:04,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 11:51:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:51:04,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 11:51:04,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 11:51:04,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 416 [2023-01-28 11:51:04,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:04,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:51:04,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 416 [2023-01-28 11:51:04,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:51:04,343 INFO L130 PetriNetUnfolder]: 800/1134 cut-off events. [2023-01-28 11:51:04,343 INFO L131 PetriNetUnfolder]: For 285/308 co-relation queries the response was YES. [2023-01-28 11:51:04,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2540 conditions, 1134 events. 800/1134 cut-off events. For 285/308 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4438 event pairs, 380 based on Foata normal form. 23/865 useless extension candidates. Maximal degree in co-relation 2053. Up to 911 conditions per place. [2023-01-28 11:51:04,347 INFO L137 encePairwiseOnDemand]: 406/416 looper letters, 28 selfloop transitions, 6 changer transitions 32/68 dead transitions. [2023-01-28 11:51:04,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 68 transitions, 348 flow [2023-01-28 11:51:04,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 11:51:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 11:51:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 775 transitions. [2023-01-28 11:51:04,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37259615384615385 [2023-01-28 11:51:04,349 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 775 transitions. [2023-01-28 11:51:04,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 775 transitions. [2023-01-28 11:51:04,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:51:04,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 775 transitions. [2023-01-28 11:51:04,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:04,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:04,353 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:04,353 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 150 flow. Second operand 5 states and 775 transitions. [2023-01-28 11:51:04,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 68 transitions, 348 flow [2023-01-28 11:51:04,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 68 transitions, 346 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 11:51:04,355 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 138 flow [2023-01-28 11:51:04,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-01-28 11:51:04,356 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-01-28 11:51:04,356 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 138 flow [2023-01-28 11:51:04,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:04,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:51:04,357 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, 1, 1, 1] [2023-01-28 11:51:04,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 11:51:04,357 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 11:51:04,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:51:04,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1040220969, now seen corresponding path program 1 times [2023-01-28 11:51:04,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:51:04,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934240008] [2023-01-28 11:51:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:51:04,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:51:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:51:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:51:04,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:51:04,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934240008] [2023-01-28 11:51:04,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934240008] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:51:04,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664383993] [2023-01-28 11:51:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:51:04,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:51:04,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:51:04,426 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 11:51:04,470 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 11:51:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:51:04,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 11:51:04,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:51:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:51:04,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:51:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:51:04,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664383993] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:51:04,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:51:04,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-01-28 11:51:04,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773416361] [2023-01-28 11:51:04,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:51:04,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 11:51:04,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:51:04,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 11:51:04,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 11:51:04,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 416 [2023-01-28 11:51:04,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:04,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:51:04,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 416 [2023-01-28 11:51:04,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:51:04,785 INFO L130 PetriNetUnfolder]: 855/1180 cut-off events. [2023-01-28 11:51:04,786 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2023-01-28 11:51:04,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2865 conditions, 1180 events. 855/1180 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4450 event pairs, 332 based on Foata normal form. 0/962 useless extension candidates. Maximal degree in co-relation 2821. Up to 884 conditions per place. [2023-01-28 11:51:04,790 INFO L137 encePairwiseOnDemand]: 411/416 looper letters, 45 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-01-28 11:51:04,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 282 flow [2023-01-28 11:51:04,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 11:51:04,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 11:51:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 759 transitions. [2023-01-28 11:51:04,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36490384615384613 [2023-01-28 11:51:04,792 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 759 transitions. [2023-01-28 11:51:04,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 759 transitions. [2023-01-28 11:51:04,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:51:04,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 759 transitions. [2023-01-28 11:51:04,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:04,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:04,796 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:04,797 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 138 flow. Second operand 5 states and 759 transitions. [2023-01-28 11:51:04,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 282 flow [2023-01-28 11:51:04,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 51 transitions, 248 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-01-28 11:51:04,799 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 126 flow [2023-01-28 11:51:04,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-01-28 11:51:04,799 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-01-28 11:51:04,799 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 126 flow [2023-01-28 11:51:04,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:04,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:51:04,800 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, 1, 1, 1, 1] [2023-01-28 11:51:04,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 11:51:05,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:51:05,007 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 11:51:05,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:51:05,008 INFO L85 PathProgramCache]: Analyzing trace with hash -340615580, now seen corresponding path program 1 times [2023-01-28 11:51:05,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:51:05,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116050263] [2023-01-28 11:51:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:51:05,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:51:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:51:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:51:05,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:51:05,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116050263] [2023-01-28 11:51:05,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116050263] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:51:05,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716152018] [2023-01-28 11:51:05,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:51:05,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:51:05,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:51:05,082 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 11:51:05,084 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 11:51:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:51:05,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 11:51:05,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:51:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:51:05,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:51:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:51:05,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716152018] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:51:05,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:51:05,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-01-28 11:51:05,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360584393] [2023-01-28 11:51:05,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:51:05,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 11:51:05,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:51:05,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 11:51:05,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 11:51:05,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 416 [2023-01-28 11:51:05,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 147.2) internal successors, (736), 5 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:05,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:51:05,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 416 [2023-01-28 11:51:05,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:51:05,325 INFO L130 PetriNetUnfolder]: 669/936 cut-off events. [2023-01-28 11:51:05,325 INFO L131 PetriNetUnfolder]: For 241/314 co-relation queries the response was YES. [2023-01-28 11:51:05,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2356 conditions, 936 events. 669/936 cut-off events. For 241/314 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3248 event pairs, 194 based on Foata normal form. 73/812 useless extension candidates. Maximal degree in co-relation 2317. Up to 469 conditions per place. [2023-01-28 11:51:05,328 INFO L137 encePairwiseOnDemand]: 409/416 looper letters, 42 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-01-28 11:51:05,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 265 flow [2023-01-28 11:51:05,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 11:51:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 11:51:05,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 753 transitions. [2023-01-28 11:51:05,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36201923076923076 [2023-01-28 11:51:05,330 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 753 transitions. [2023-01-28 11:51:05,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 753 transitions. [2023-01-28 11:51:05,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:51:05,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 753 transitions. [2023-01-28 11:51:05,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:05,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:05,334 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:05,334 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 126 flow. Second operand 5 states and 753 transitions. [2023-01-28 11:51:05,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 265 flow [2023-01-28 11:51:05,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 252 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 11:51:05,335 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 151 flow [2023-01-28 11:51:05,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-01-28 11:51:05,336 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-01-28 11:51:05,336 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 151 flow [2023-01-28 11:51:05,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.2) internal successors, (736), 5 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:05,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:51:05,355 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, 1, 1, 1, 1] [2023-01-28 11:51:05,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 11:51:05,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:51:05,560 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 11:51:05,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:51:05,561 INFO L85 PathProgramCache]: Analyzing trace with hash -155772382, now seen corresponding path program 1 times [2023-01-28 11:51:05,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:51:05,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835155781] [2023-01-28 11:51:05,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:51:05,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:51:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:51:05,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 11:51:05,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:51:05,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835155781] [2023-01-28 11:51:05,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835155781] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:51:05,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409360245] [2023-01-28 11:51:05,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:51:05,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:51:05,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:51:05,650 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 11:51:05,652 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 11:51:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:51:05,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 11:51:05,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:51:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 11:51:05,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:51:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 11:51:05,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409360245] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:51:05,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:51:05,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-01-28 11:51:05,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305201288] [2023-01-28 11:51:05,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:51:05,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 11:51:05,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:51:05,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 11:51:05,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 11:51:05,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 416 [2023-01-28 11:51:05,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:05,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:51:05,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 416 [2023-01-28 11:51:05,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:51:05,874 INFO L130 PetriNetUnfolder]: 685/950 cut-off events. [2023-01-28 11:51:05,874 INFO L131 PetriNetUnfolder]: For 498/627 co-relation queries the response was YES. [2023-01-28 11:51:05,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 950 events. 685/950 cut-off events. For 498/627 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3302 event pairs, 206 based on Foata normal form. 179/924 useless extension candidates. Maximal degree in co-relation 2651. Up to 559 conditions per place. [2023-01-28 11:51:05,878 INFO L137 encePairwiseOnDemand]: 410/416 looper letters, 48 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2023-01-28 11:51:05,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 323 flow [2023-01-28 11:51:05,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 11:51:05,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 11:51:05,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 748 transitions. [2023-01-28 11:51:05,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3596153846153846 [2023-01-28 11:51:05,880 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 748 transitions. [2023-01-28 11:51:05,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 748 transitions. [2023-01-28 11:51:05,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:51:05,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 748 transitions. [2023-01-28 11:51:05,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:05,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:05,883 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:05,883 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 151 flow. Second operand 5 states and 748 transitions. [2023-01-28 11:51:05,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 323 flow [2023-01-28 11:51:05,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 311 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 11:51:05,885 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 168 flow [2023-01-28 11:51:05,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-01-28 11:51:05,885 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-01-28 11:51:05,885 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 168 flow [2023-01-28 11:51:05,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:51:05,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:51:05,886 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, 1, 1, 1, 1, 1, 1] [2023-01-28 11:51:05,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 11:51:06,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:51:06,091 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 11:51:06,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:51:06,091 INFO L85 PathProgramCache]: Analyzing trace with hash -166136936, now seen corresponding path program 1 times [2023-01-28 11:51:06,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:51:06,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134079685] [2023-01-28 11:51:06,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:51:06,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:51:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:51:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:51:07,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:51:07,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134079685] [2023-01-28 11:51:07,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134079685] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:51:07,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539467836] [2023-01-28 11:51:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:51:07,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:51:07,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:51:07,325 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 11:51:07,327 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 11:51:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:51:07,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 58 conjunts are in the unsatisfiable core [2023-01-28 11:51:07,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:51:07,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:51:07,513 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2023-01-28 11:51:07,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2023-01-28 11:51:07,585 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-28 11:51:07,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-01-28 11:51:07,683 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-01-28 11:51:07,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 11:51:07,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2023-01-28 11:51:08,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:51:08,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:51:08,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:51:08,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-01-28 11:51:08,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2023-01-28 11:51:08,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:51:08,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:51:08,615 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_332 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_332))) (= (mod (+ (select (select .cse0 c_~C~0.base) c_~C~0.offset) c_~csum~0) 4294967296) (mod (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) (select (select .cse0 c_~B~0.base) c_~B~0.offset) c_~asum~0 c_~bsum~0) 4294967296)))) is different from false [2023-01-28 11:51:08,687 INFO L321 Elim1Store]: treesize reduction 42, result has 62.5 percent of original size [2023-01-28 11:51:08,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 124 treesize of output 104 [2023-01-28 11:51:08,882 INFO L321 Elim1Store]: treesize reduction 11, result has 93.9 percent of original size [2023-01-28 11:51:08,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 321 treesize of output 410 [2023-01-28 11:51:08,916 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:51:08,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 198 treesize of output 198 [2023-01-28 11:53:57,330 WARN L222 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 13 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 11:54:31,094 WARN L222 SmtUtils]: Spent 16.30s on a formula simplification. DAG size of input: 314 DAG size of output: 31 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:54:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:54:32,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539467836] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:54:32,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:54:32,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 35 [2023-01-28 11:54:32,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234099727] [2023-01-28 11:54:32,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:54:32,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-01-28 11:54:32,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:54:32,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-01-28 11:54:32,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1111, Unknown=3, NotChecked=68, Total=1332 [2023-01-28 11:54:32,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 416 [2023-01-28 11:54:32,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 168 flow. Second operand has 37 states, 37 states have (on average 127.16216216216216) internal successors, (4705), 37 states have internal predecessors, (4705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:54:32,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:54:32,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 416 [2023-01-28 11:54:32,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:54:33,889 INFO L130 PetriNetUnfolder]: 1172/1618 cut-off events. [2023-01-28 11:54:33,889 INFO L131 PetriNetUnfolder]: For 1467/1467 co-relation queries the response was YES. [2023-01-28 11:54:33,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 1618 events. 1172/1618 cut-off events. For 1467/1467 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5221 event pairs, 179 based on Foata normal form. 1/1322 useless extension candidates. Maximal degree in co-relation 5000. Up to 1095 conditions per place. [2023-01-28 11:54:33,898 INFO L137 encePairwiseOnDemand]: 404/416 looper letters, 92 selfloop transitions, 26 changer transitions 1/119 dead transitions. [2023-01-28 11:54:33,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 119 transitions, 729 flow [2023-01-28 11:54:33,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 11:54:33,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 11:54:33,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1734 transitions. [2023-01-28 11:54:33,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3206360946745562 [2023-01-28 11:54:33,904 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1734 transitions. [2023-01-28 11:54:33,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1734 transitions. [2023-01-28 11:54:33,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:54:33,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1734 transitions. [2023-01-28 11:54:33,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 133.3846153846154) internal successors, (1734), 13 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:54:33,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 416.0) internal successors, (5824), 14 states have internal predecessors, (5824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:54:33,924 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 416.0) internal successors, (5824), 14 states have internal predecessors, (5824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:54:33,924 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 168 flow. Second operand 13 states and 1734 transitions. [2023-01-28 11:54:33,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 119 transitions, 729 flow [2023-01-28 11:54:33,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 119 transitions, 716 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 11:54:33,928 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 367 flow [2023-01-28 11:54:33,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=367, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2023-01-28 11:54:33,929 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 26 predicate places. [2023-01-28 11:54:33,929 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 367 flow [2023-01-28 11:54:33,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 127.16216216216216) internal successors, (4705), 37 states have internal predecessors, (4705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:54:33,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:54:33,945 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, 1, 1, 1, 1, 1, 1] [2023-01-28 11:54:33,950 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 11:54:34,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:54:34,145 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 11:54:34,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:54:34,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2070806332, now seen corresponding path program 2 times [2023-01-28 11:54:34,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:54:34,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325142790] [2023-01-28 11:54:34,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:54:34,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:54:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:54:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 11:54:34,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:54:34,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325142790] [2023-01-28 11:54:34,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325142790] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:54:34,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:54:34,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 11:54:34,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793925446] [2023-01-28 11:54:34,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:54:34,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 11:54:34,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:54:34,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 11:54:34,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 11:54:34,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 416 [2023-01-28 11:54:34,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 367 flow. Second operand has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:54:34,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:54:34,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 416 [2023-01-28 11:54:34,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:54:34,542 INFO L130 PetriNetUnfolder]: 1002/1400 cut-off events. [2023-01-28 11:54:34,542 INFO L131 PetriNetUnfolder]: For 2756/2928 co-relation queries the response was YES. [2023-01-28 11:54:34,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5027 conditions, 1400 events. 1002/1400 cut-off events. For 2756/2928 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4806 event pairs, 131 based on Foata normal form. 202/1426 useless extension candidates. Maximal degree in co-relation 4973. Up to 795 conditions per place. [2023-01-28 11:54:34,549 INFO L137 encePairwiseOnDemand]: 410/416 looper letters, 94 selfloop transitions, 12 changer transitions 2/112 dead transitions. [2023-01-28 11:54:34,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 112 transitions, 840 flow [2023-01-28 11:54:34,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 11:54:34,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 11:54:34,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1157 transitions. [2023-01-28 11:54:34,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2023-01-28 11:54:34,552 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1157 transitions. [2023-01-28 11:54:34,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1157 transitions. [2023-01-28 11:54:34,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:54:34,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1157 transitions. [2023-01-28 11:54:34,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:54:34,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 416.0) internal successors, (2912), 7 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:54:34,556 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 416.0) internal successors, (2912), 7 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:54:34,556 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 367 flow. Second operand 6 states and 1157 transitions. [2023-01-28 11:54:34,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 112 transitions, 840 flow [2023-01-28 11:54:34,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 112 transitions, 808 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-01-28 11:54:34,562 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 427 flow [2023-01-28 11:54:34,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-01-28 11:54:34,564 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2023-01-28 11:54:34,564 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 427 flow [2023-01-28 11:54:34,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:54:34,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:54:34,565 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, 1, 1, 1, 1, 1, 1] [2023-01-28 11:54:34,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 11:54:34,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:54:34,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:54:34,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1174297838, now seen corresponding path program 3 times [2023-01-28 11:54:34,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:54:34,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857981928] [2023-01-28 11:54:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:54:34,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:54:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:54:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:54:35,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:54:35,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857981928] [2023-01-28 11:54:35,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857981928] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:54:35,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619119809] [2023-01-28 11:54:35,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 11:54:35,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:54:35,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:54:35,562 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 11:54:35,564 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 11:54:35,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 11:54:35,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:54:35,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 43 conjunts are in the unsatisfiable core [2023-01-28 11:54:35,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:54:36,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:54:36,035 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 11:54:36,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:54:36,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:54:36,130 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 11:54:36,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2023-01-28 11:54:36,253 INFO L321 Elim1Store]: treesize reduction 36, result has 52.0 percent of original size [2023-01-28 11:54:36,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 54 [2023-01-28 11:54:36,643 INFO L321 Elim1Store]: treesize reduction 60, result has 68.3 percent of original size [2023-01-28 11:54:36,643 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 113 treesize of output 193 [2023-01-28 11:54:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:54:37,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:54:39,119 WARN L839 $PredicateComparison]: unable to prove that (forall ((~C~0.offset Int) (~C~0.base Int)) (let ((.cse0 (select (let ((.cse1 (* c_thread2Thread1of1ForFork2_~i~1 4))) (store (select |c_#memory_int| ~C~0.base) (+ ~C~0.offset .cse1) (+ (select (select |c_#memory_int| c_~B~0.base) (+ c_~B~0.offset .cse1)) (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset .cse1))))) (+ (* c_thread3Thread1of1ForFork0_~i~2 4) ~C~0.offset)))) (= (+ c_~asum~0 c_~bsum~0 (* 4294967296 (div (+ .cse0 c_~csum~0) 4294967296))) (+ .cse0 (* 4294967296 (div (+ c_~asum~0 c_~bsum~0) 4294967296)) c_~csum~0)))) is different from false [2023-01-28 11:54:53,263 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_430 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_430))) (let ((.cse0 (select (select .cse2 c_~B~0.base) c_~B~0.offset)) (.cse1 (select (select .cse2 c_~A~0.base) c_~A~0.offset))) (= (+ c_~asum~0 c_~bsum~0 (* (div (+ .cse0 .cse1 c_~csum~0) 4294967296) 4294967296)) (+ .cse0 (* 4294967296 (div (+ c_~asum~0 c_~bsum~0) 4294967296)) .cse1 c_~csum~0))))) is different from false [2023-01-28 11:54:53,270 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_430 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_430))) (let ((.cse0 (select (select |c_#memory_int| c_~B~0.base) (+ (* c_thread1Thread1of1ForFork1_~i~0 4) c_~B~0.offset))) (.cse1 (select (select .cse3 c_~B~0.base) c_~B~0.offset)) (.cse2 (select (select .cse3 c_~A~0.base) c_~A~0.offset))) (= (+ .cse0 c_~asum~0 c_~bsum~0 (* (div (+ .cse1 .cse2 c_~csum~0) 4294967296) 4294967296)) (+ (* (div (+ .cse0 c_~asum~0 c_~bsum~0) 4294967296) 4294967296) .cse1 .cse2 c_~csum~0))))) is different from false [2023-01-28 11:54:53,280 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_429 (Array Int Int)) (v_ArrVal_430 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_429))) (let ((.cse4 (store .cse3 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_430))) (let ((.cse1 (select (select .cse4 c_~B~0.base) c_~B~0.offset)) (.cse2 (select (select .cse4 c_~A~0.base) c_~A~0.offset)) (.cse0 (select (select .cse3 c_~B~0.base) (+ (* c_thread1Thread1of1ForFork1_~i~0 4) c_~B~0.offset)))) (= (+ c_~asum~0 c_~bsum~0 .cse0 (* (div (+ .cse1 c_~csum~0 .cse2) 4294967296) 4294967296)) (+ .cse1 c_~csum~0 .cse2 (* (div (+ c_~asum~0 c_~bsum~0 .cse0) 4294967296) 4294967296))))))) is different from false [2023-01-28 11:54:53,339 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:54:53,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 4918 treesize of output 3194 [2023-01-28 11:54:53,375 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:54:53,375 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 774 treesize of output 718 [2023-01-28 11:54:53,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:54:53,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 710 treesize of output 610 [2023-01-28 11:55:18,983 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-28 11:55:26,324 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-28 11:56:37,341 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:00:47,985 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:00:48,023 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:02:25,117 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:05:04,542 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:05:04,580 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Received shutdown request... [2023-01-28 12:05:28,254 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 12:05:28,256 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 12:05:28,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 12:05:28,265 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 12:05:28,265 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 12:05:28,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:05:28,456 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 20 for 3ms.. [2023-01-28 12:05:28,458 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 12:05:28,458 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 12:05:28,458 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 12:05:28,458 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:28,461 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 12:05:28,461 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 12:05:28,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:05:28 BasicIcfg [2023-01-28 12:05:28,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 12:05:28,463 INFO L158 Benchmark]: Toolchain (without parser) took 870636.92ms. Allocated memory was 396.4MB in the beginning and 992.0MB in the end (delta: 595.6MB). Free memory was 345.0MB in the beginning and 786.9MB in the end (delta: -441.8MB). Peak memory consumption was 586.9MB. Max. memory is 16.0GB. [2023-01-28 12:05:28,463 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 212.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 12:05:28,463 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.20ms. Allocated memory is still 396.4MB. Free memory was 345.0MB in the beginning and 333.2MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 12:05:28,464 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.13ms. Allocated memory is still 396.4MB. Free memory was 333.2MB in the beginning and 331.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:05:28,464 INFO L158 Benchmark]: Boogie Preprocessor took 24.16ms. Allocated memory is still 396.4MB. Free memory was 331.0MB in the beginning and 329.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:05:28,464 INFO L158 Benchmark]: RCFGBuilder took 448.88ms. Allocated memory is still 396.4MB. Free memory was 329.3MB in the beginning and 356.9MB in the end (delta: -27.6MB). Peak memory consumption was 12.9MB. Max. memory is 16.0GB. [2023-01-28 12:05:28,477 INFO L158 Benchmark]: TraceAbstraction took 869914.53ms. Allocated memory was 396.4MB in the beginning and 992.0MB in the end (delta: 595.6MB). Free memory was 356.2MB in the beginning and 786.9MB in the end (delta: -430.7MB). Peak memory consumption was 597.1MB. Max. memory is 16.0GB. [2023-01-28 12:05:28,478 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 255.9MB. Free memory is still 212.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 216.20ms. Allocated memory is still 396.4MB. Free memory was 345.0MB in the beginning and 333.2MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.13ms. Allocated memory is still 396.4MB. Free memory was 333.2MB in the beginning and 331.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.16ms. Allocated memory is still 396.4MB. Free memory was 331.0MB in the beginning and 329.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 448.88ms. Allocated memory is still 396.4MB. Free memory was 329.3MB in the beginning and 356.9MB in the end (delta: -27.6MB). Peak memory consumption was 12.9MB. Max. memory is 16.0GB. * TraceAbstraction took 869914.53ms. Allocated memory was 396.4MB in the beginning and 992.0MB in the end (delta: 595.6MB). Free memory was 356.2MB in the beginning and 786.9MB in the end (delta: -430.7MB). Peak memory consumption was 597.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 189 PlacesBefore, 34 PlacesAfterwards, 199 TransitionsBefore, 31 TransitionsAfterwards, 1874 CoEnabledTransitionPairs, 7 FixpointIterations, 120 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 32 TrivialYvCompositions, 6 ConcurrentYvCompositions, 13 ChoiceCompositions, 204 TotalNumberOfCompositions, 2518 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2060, independent: 2001, independent conditional: 0, independent unconditional: 2001, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 995, independent: 972, independent conditional: 0, independent unconditional: 972, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2060, independent: 1029, independent conditional: 0, independent unconditional: 1029, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 995, unknown conditional: 0, unknown unconditional: 995] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 80, Positive conditional cache size: 0, Positive unconditional cache size: 80, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 20 for 3ms.. - TimeoutResultAtElement [Line: 94]: 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 31 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 20 for 3ms.. - TimeoutResultAtElement [Line: 95]: 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 31 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 20 for 3ms.. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 20 for 3ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 230 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: 869.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 460 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 460 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 104 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1558 IncrementalHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 14 mSDtfsCounter, 1558 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 275 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 24.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=427occurred in iteration=8, InterpolantAutomatonStates: 47, 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, 0.4s SatisfiabilityAnalysisTime, 207.1s InterpolantComputationTime, 326 NumberOfCodeBlocks, 326 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 423 ConstructedInterpolants, 14 QuantifiedInterpolants, 4103 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1204 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 53/68 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