/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 15:39:08,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 15:39:08,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 15:39:08,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 15:39:08,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 15:39:08,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 15:39:08,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 15:39:08,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 15:39:08,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 15:39:08,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 15:39:08,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 15:39:08,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 15:39:08,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 15:39:08,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 15:39:08,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 15:39:08,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 15:39:08,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 15:39:08,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 15:39:08,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 15:39:08,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 15:39:08,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 15:39:08,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 15:39:08,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 15:39:08,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 15:39:08,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 15:39:08,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 15:39:08,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 15:39:08,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 15:39:08,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 15:39:08,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 15:39:08,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 15:39:08,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 15:39:08,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 15:39:08,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 15:39:08,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 15:39:08,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 15:39:08,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 15:39:08,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 15:39:08,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 15:39:08,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 15:39:08,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 15:39:08,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 15:39:08,137 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 15:39:08,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 15:39:08,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 15:39:08,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 15:39:08,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 15:39:08,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 15:39:08,140 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 15:39:08,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 15:39:08,140 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 15:39:08,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 15:39:08,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 15:39:08,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 15:39:08,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 15:39:08,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 15:39:08,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 15:39:08,141 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 15:39:08,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 15:39:08,141 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 15:39:08,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 15:39:08,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 15:39:08,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 15:39:08,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 15:39:08,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 15:39:08,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:39:08,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 15:39:08,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 15:39:08,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 15:39:08,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 15:39:08,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 15:39:08,142 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 15:39:08,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 15:39:08,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 15:39:08,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 15:39:08,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 15:39:08,392 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 15:39:08,392 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 15:39:08,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2022-12-12 15:39:09,213 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 15:39:09,418 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 15:39:09,418 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2022-12-12 15:39:09,423 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68455e4d2/f697bd09216441c2a02759cef36bb9b0/FLAG6fac06c96 [2022-12-12 15:39:09,432 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68455e4d2/f697bd09216441c2a02759cef36bb9b0 [2022-12-12 15:39:09,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 15:39:09,436 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 15:39:09,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 15:39:09,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 15:39:09,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 15:39:09,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:39:09" (1/1) ... [2022-12-12 15:39:09,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7695c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:39:09, skipping insertion in model container [2022-12-12 15:39:09,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:39:09" (1/1) ... [2022-12-12 15:39:09,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 15:39:09,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 15:39:09,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,573 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,574 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,575 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,576 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,591 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-12-12 15:39:09,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:39:09,615 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 15:39:09,627 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,630 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,635 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,645 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,645 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,647 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,647 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,647 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:39:09,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:39:09,652 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-12-12 15:39:09,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:39:09,664 INFO L208 MainTranslator]: Completed translation [2022-12-12 15:39:09,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:39:09 WrapperNode [2022-12-12 15:39:09,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 15:39:09,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 15:39:09,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 15:39:09,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 15:39:09,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:39:09" (1/1) ... [2022-12-12 15:39:09,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:39:09" (1/1) ... [2022-12-12 15:39:09,722 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 386 [2022-12-12 15:39:09,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 15:39:09,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 15:39:09,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 15:39:09,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 15:39:09,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:39:09" (1/1) ... [2022-12-12 15:39:09,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:39:09" (1/1) ... [2022-12-12 15:39:09,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:39:09" (1/1) ... [2022-12-12 15:39:09,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:39:09" (1/1) ... [2022-12-12 15:39:09,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:39:09" (1/1) ... [2022-12-12 15:39:09,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:39:09" (1/1) ... [2022-12-12 15:39:09,758 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:39:09" (1/1) ... [2022-12-12 15:39:09,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:39:09" (1/1) ... [2022-12-12 15:39:09,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 15:39:09,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 15:39:09,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 15:39:09,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 15:39:09,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:39:09" (1/1) ... [2022-12-12 15:39:09,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:39:09,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:39:09,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 15:39:09,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 15:39:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 15:39:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 15:39:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 15:39:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 15:39:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 15:39:09,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 15:39:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 15:39:09,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 15:39:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 15:39:09,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 15:39:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-12 15:39:09,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-12 15:39:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 15:39:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-12 15:39:09,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-12 15:39:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-12 15:39:09,816 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-12 15:39:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 15:39:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 15:39:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 15:39:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 15:39:09,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 15:39:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 15:39:09,818 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 15:39:09,952 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 15:39:09,954 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 15:39:10,323 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 15:39:10,466 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 15:39:10,467 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-12 15:39:10,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:39:10 BoogieIcfgContainer [2022-12-12 15:39:10,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 15:39:10,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 15:39:10,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 15:39:10,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 15:39:10,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 03:39:09" (1/3) ... [2022-12-12 15:39:10,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d585977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:39:10, skipping insertion in model container [2022-12-12 15:39:10,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:39:09" (2/3) ... [2022-12-12 15:39:10,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d585977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:39:10, skipping insertion in model container [2022-12-12 15:39:10,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:39:10" (3/3) ... [2022-12-12 15:39:10,476 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2022-12-12 15:39:10,488 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 15:39:10,488 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 15:39:10,488 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 15:39:10,592 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-12-12 15:39:10,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 293 transitions, 658 flow [2022-12-12 15:39:10,792 INFO L130 PetriNetUnfolder]: 21/249 cut-off events. [2022-12-12 15:39:10,793 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 15:39:10,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 249 events. 21/249 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 283 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 212. Up to 3 conditions per place. [2022-12-12 15:39:10,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 293 transitions, 658 flow [2022-12-12 15:39:10,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 241 transitions, 530 flow [2022-12-12 15:39:10,808 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 15:39:10,827 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 241 transitions, 530 flow [2022-12-12 15:39:10,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 241 transitions, 530 flow [2022-12-12 15:39:10,883 INFO L130 PetriNetUnfolder]: 21/241 cut-off events. [2022-12-12 15:39:10,884 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 15:39:10,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 241 events. 21/241 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 282 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 212. Up to 3 conditions per place. [2022-12-12 15:39:10,892 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 241 transitions, 530 flow [2022-12-12 15:39:10,892 INFO L226 LiptonReduction]: Number of co-enabled transitions 8352 [2022-12-12 15:39:19,243 INFO L241 LiptonReduction]: Total number of compositions: 184 [2022-12-12 15:39:19,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 15:39:19,257 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;@2cdd8fbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 15:39:19,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-12 15:39:19,263 INFO L130 PetriNetUnfolder]: 10/57 cut-off events. [2022-12-12 15:39:19,263 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 15:39:19,263 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:39:19,264 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:39:19,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 15:39:19,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:39:19,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1141140935, now seen corresponding path program 1 times [2022-12-12 15:39:19,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:39:19,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249720145] [2022-12-12 15:39:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:39:19,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:39:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:39:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:39:19,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:39:19,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249720145] [2022-12-12 15:39:19,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249720145] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:39:19,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:39:19,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 15:39:19,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670081293] [2022-12-12 15:39:19,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:39:19,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-12 15:39:19,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:39:19,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-12 15:39:19,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-12 15:39:19,509 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2022-12-12 15:39:19,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 164 flow. Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:19,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:39:19,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2022-12-12 15:39:19,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:39:19,862 INFO L130 PetriNetUnfolder]: 3214/4245 cut-off events. [2022-12-12 15:39:19,862 INFO L131 PetriNetUnfolder]: For 787/787 co-relation queries the response was YES. [2022-12-12 15:39:19,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9422 conditions, 4245 events. 3214/4245 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14775 event pairs, 1953 based on Foata normal form. 0/2955 useless extension candidates. Maximal degree in co-relation 9103. Up to 4099 conditions per place. [2022-12-12 15:39:19,881 INFO L137 encePairwiseOnDemand]: 57/58 looper letters, 41 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2022-12-12 15:39:19,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 57 transitions, 244 flow [2022-12-12 15:39:19,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-12 15:39:19,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-12 15:39:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 74 transitions. [2022-12-12 15:39:19,888 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2022-12-12 15:39:19,889 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 164 flow. Second operand 2 states and 74 transitions. [2022-12-12 15:39:19,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 57 transitions, 244 flow [2022-12-12 15:39:19,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 212 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-12-12 15:39:19,900 INFO L231 Difference]: Finished difference. Result has 56 places, 57 transitions, 130 flow [2022-12-12 15:39:19,906 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=56, PETRI_TRANSITIONS=57} [2022-12-12 15:39:19,909 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, -11 predicate places. [2022-12-12 15:39:19,909 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 57 transitions, 130 flow [2022-12-12 15:39:19,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:19,909 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:39:19,909 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:39:19,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 15:39:19,910 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 15:39:19,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:39:19,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1645174705, now seen corresponding path program 1 times [2022-12-12 15:39:19,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:39:19,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301114532] [2022-12-12 15:39:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:39:19,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:39:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:39:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:39:20,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:39:20,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301114532] [2022-12-12 15:39:20,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301114532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:39:20,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:39:20,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:39:20,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283178210] [2022-12-12 15:39:20,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:39:20,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 15:39:20,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:39:20,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 15:39:20,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 15:39:20,502 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2022-12-12 15:39:20,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:20,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:39:20,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2022-12-12 15:39:20,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:39:21,261 INFO L130 PetriNetUnfolder]: 8121/10855 cut-off events. [2022-12-12 15:39:21,261 INFO L131 PetriNetUnfolder]: For 348/348 co-relation queries the response was YES. [2022-12-12 15:39:21,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22168 conditions, 10855 events. 8121/10855 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 47501 event pairs, 4054 based on Foata normal form. 82/8206 useless extension candidates. Maximal degree in co-relation 22165. Up to 4099 conditions per place. [2022-12-12 15:39:21,287 INFO L137 encePairwiseOnDemand]: 51/58 looper letters, 40 selfloop transitions, 2 changer transitions 63/121 dead transitions. [2022-12-12 15:39:21,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 121 transitions, 496 flow [2022-12-12 15:39:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:39:21,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:39:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2022-12-12 15:39:21,289 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6586206896551724 [2022-12-12 15:39:21,289 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 130 flow. Second operand 5 states and 191 transitions. [2022-12-12 15:39:21,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 121 transitions, 496 flow [2022-12-12 15:39:21,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 121 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-12 15:39:21,291 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 156 flow [2022-12-12 15:39:21,291 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2022-12-12 15:39:21,292 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, -4 predicate places. [2022-12-12 15:39:21,292 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 156 flow [2022-12-12 15:39:21,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:21,292 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:39:21,292 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:39:21,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 15:39:21,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 15:39:21,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:39:21,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1917410410, now seen corresponding path program 1 times [2022-12-12 15:39:21,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:39:21,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789325975] [2022-12-12 15:39:21,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:39:21,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:39:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:39:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:39:21,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:39:21,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789325975] [2022-12-12 15:39:21,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789325975] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:39:21,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:39:21,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:39:21,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055037568] [2022-12-12 15:39:21,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:39:21,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:39:21,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:39:21,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:39:21,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-12 15:39:21,741 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2022-12-12 15:39:21,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:21,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:39:21,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2022-12-12 15:39:21,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:39:22,650 INFO L130 PetriNetUnfolder]: 9425/12140 cut-off events. [2022-12-12 15:39:22,650 INFO L131 PetriNetUnfolder]: For 4559/4559 co-relation queries the response was YES. [2022-12-12 15:39:22,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28869 conditions, 12140 events. 9425/12140 cut-off events. For 4559/4559 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 49957 event pairs, 2155 based on Foata normal form. 1/10580 useless extension candidates. Maximal degree in co-relation 28862. Up to 4568 conditions per place. [2022-12-12 15:39:22,701 INFO L137 encePairwiseOnDemand]: 49/58 looper letters, 118 selfloop transitions, 10 changer transitions 9/153 dead transitions. [2022-12-12 15:39:22,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 153 transitions, 697 flow [2022-12-12 15:39:22,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 15:39:22,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 15:39:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2022-12-12 15:39:22,703 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6695402298850575 [2022-12-12 15:39:22,703 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 156 flow. Second operand 6 states and 233 transitions. [2022-12-12 15:39:22,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 153 transitions, 697 flow [2022-12-12 15:39:22,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 153 transitions, 669 flow, removed 13 selfloop flow, removed 2 redundant places. [2022-12-12 15:39:22,720 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 219 flow [2022-12-12 15:39:22,720 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2022-12-12 15:39:22,720 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 0 predicate places. [2022-12-12 15:39:22,721 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 219 flow [2022-12-12 15:39:22,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:22,721 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:39:22,721 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:39:22,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 15:39:22,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 15:39:22,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:39:22,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1263332798, now seen corresponding path program 2 times [2022-12-12 15:39:22,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:39:22,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435669857] [2022-12-12 15:39:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:39:22,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:39:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:39:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:39:23,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:39:23,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435669857] [2022-12-12 15:39:23,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435669857] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:39:23,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:39:23,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:39:23,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479741367] [2022-12-12 15:39:23,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:39:23,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:39:23,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:39:23,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:39:23,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 15:39:23,120 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2022-12-12 15:39:23,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:23,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:39:23,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2022-12-12 15:39:23,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:39:24,035 INFO L130 PetriNetUnfolder]: 9413/12114 cut-off events. [2022-12-12 15:39:24,036 INFO L131 PetriNetUnfolder]: For 6618/6618 co-relation queries the response was YES. [2022-12-12 15:39:24,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31949 conditions, 12114 events. 9413/12114 cut-off events. For 6618/6618 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 50303 event pairs, 1931 based on Foata normal form. 1/11271 useless extension candidates. Maximal degree in co-relation 31940. Up to 4568 conditions per place. [2022-12-12 15:39:24,085 INFO L137 encePairwiseOnDemand]: 49/58 looper letters, 113 selfloop transitions, 12 changer transitions 9/150 dead transitions. [2022-12-12 15:39:24,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 150 transitions, 726 flow [2022-12-12 15:39:24,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 15:39:24,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 15:39:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2022-12-12 15:39:24,086 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6551724137931034 [2022-12-12 15:39:24,086 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 219 flow. Second operand 6 states and 228 transitions. [2022-12-12 15:39:24,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 150 transitions, 726 flow [2022-12-12 15:39:24,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 150 transitions, 718 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-12 15:39:24,097 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 272 flow [2022-12-12 15:39:24,097 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2022-12-12 15:39:24,097 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2022-12-12 15:39:24,097 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 272 flow [2022-12-12 15:39:24,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:24,098 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:39:24,098 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:39:24,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 15:39:24,098 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 15:39:24,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:39:24,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1329951308, now seen corresponding path program 1 times [2022-12-12 15:39:24,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:39:24,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624024520] [2022-12-12 15:39:24,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:39:24,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:39:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:39:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:39:24,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:39:24,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624024520] [2022-12-12 15:39:24,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624024520] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:39:24,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623179468] [2022-12-12 15:39:24,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:39:24,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:39:24,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:39:24,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 15:39:24,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 15:39:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:39:24,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 15:39:24,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:39:24,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:39:24,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:39:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:39:24,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623179468] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:39:24,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:39:24,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-12-12 15:39:24,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379630873] [2022-12-12 15:39:24,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:39:24,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 15:39:24,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:39:24,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 15:39:24,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-12 15:39:24,802 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2022-12-12 15:39:24,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 272 flow. Second operand has 11 states, 11 states have (on average 23.09090909090909) internal successors, (254), 11 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:24,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:39:24,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2022-12-12 15:39:24,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:39:26,573 INFO L130 PetriNetUnfolder]: 16716/22181 cut-off events. [2022-12-12 15:39:26,573 INFO L131 PetriNetUnfolder]: For 22815/22815 co-relation queries the response was YES. [2022-12-12 15:39:26,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60104 conditions, 22181 events. 16716/22181 cut-off events. For 22815/22815 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 104516 event pairs, 11113 based on Foata normal form. 1320/21942 useless extension candidates. Maximal degree in co-relation 60092. Up to 10712 conditions per place. [2022-12-12 15:39:26,682 INFO L137 encePairwiseOnDemand]: 52/58 looper letters, 110 selfloop transitions, 6 changer transitions 1/133 dead transitions. [2022-12-12 15:39:26,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 133 transitions, 757 flow [2022-12-12 15:39:26,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 15:39:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 15:39:26,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2022-12-12 15:39:26,683 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2022-12-12 15:39:26,683 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 272 flow. Second operand 6 states and 196 transitions. [2022-12-12 15:39:26,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 133 transitions, 757 flow [2022-12-12 15:39:26,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 133 transitions, 715 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-12 15:39:26,732 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 312 flow [2022-12-12 15:39:26,733 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2022-12-12 15:39:26,735 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2022-12-12 15:39:26,735 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 312 flow [2022-12-12 15:39:26,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.09090909090909) internal successors, (254), 11 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:26,735 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:39:26,735 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:39:26,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 15:39:26,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:39:26,943 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 15:39:26,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:39:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash 951672425, now seen corresponding path program 1 times [2022-12-12 15:39:26,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:39:26,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699689750] [2022-12-12 15:39:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:39:26,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:39:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:39:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:39:27,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:39:27,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699689750] [2022-12-12 15:39:27,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699689750] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:39:27,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239914969] [2022-12-12 15:39:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:39:27,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:39:27,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:39:27,204 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 15:39:27,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 15:39:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:39:27,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 15:39:27,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:39:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:39:27,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:39:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:39:27,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239914969] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:39:27,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:39:27,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-12-12 15:39:27,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439153073] [2022-12-12 15:39:27,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:39:27,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 15:39:27,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:39:27,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 15:39:27,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-12 15:39:27,488 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2022-12-12 15:39:27,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 312 flow. Second operand has 11 states, 11 states have (on average 21.818181818181817) internal successors, (240), 11 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:27,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:39:27,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2022-12-12 15:39:27,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:39:28,671 INFO L130 PetriNetUnfolder]: 11592/15521 cut-off events. [2022-12-12 15:39:28,671 INFO L131 PetriNetUnfolder]: For 15465/15465 co-relation queries the response was YES. [2022-12-12 15:39:28,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41043 conditions, 15521 events. 11592/15521 cut-off events. For 15465/15465 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 70740 event pairs, 7601 based on Foata normal form. 504/14934 useless extension candidates. Maximal degree in co-relation 41030. Up to 11068 conditions per place. [2022-12-12 15:39:28,756 INFO L137 encePairwiseOnDemand]: 52/58 looper letters, 67 selfloop transitions, 5 changer transitions 33/121 dead transitions. [2022-12-12 15:39:28,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 121 transitions, 657 flow [2022-12-12 15:39:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 15:39:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 15:39:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2022-12-12 15:39:28,757 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2022-12-12 15:39:28,757 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 312 flow. Second operand 6 states and 192 transitions. [2022-12-12 15:39:28,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 121 transitions, 657 flow [2022-12-12 15:39:28,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 121 transitions, 649 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-12 15:39:28,786 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 295 flow [2022-12-12 15:39:28,787 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=295, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2022-12-12 15:39:28,787 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2022-12-12 15:39:28,787 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 295 flow [2022-12-12 15:39:28,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.818181818181817) internal successors, (240), 11 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:28,788 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:39:28,788 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:39:28,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-12 15:39:28,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-12 15:39:28,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 15:39:28,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:39:28,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2116043495, now seen corresponding path program 2 times [2022-12-12 15:39:28,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:39:28,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993903650] [2022-12-12 15:39:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:39:28,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:39:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:39:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:39:29,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:39:29,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993903650] [2022-12-12 15:39:29,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993903650] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:39:29,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996767742] [2022-12-12 15:39:29,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 15:39:29,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:39:29,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:39:29,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 15:39:29,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 15:39:29,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 15:39:29,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:39:29,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 15:39:29,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:39:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:39:29,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:39:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:39:29,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996767742] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 15:39:29,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 15:39:29,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 14 [2022-12-12 15:39:29,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474975261] [2022-12-12 15:39:29,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:39:29,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:39:29,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:39:29,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:39:29,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-12-12 15:39:29,591 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2022-12-12 15:39:29,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:29,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:39:29,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2022-12-12 15:39:29,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:39:30,617 INFO L130 PetriNetUnfolder]: 11328/14585 cut-off events. [2022-12-12 15:39:30,617 INFO L131 PetriNetUnfolder]: For 17278/17278 co-relation queries the response was YES. [2022-12-12 15:39:30,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41112 conditions, 14585 events. 11328/14585 cut-off events. For 17278/17278 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 59735 event pairs, 4241 based on Foata normal form. 76/13647 useless extension candidates. Maximal degree in co-relation 41097. Up to 7854 conditions per place. [2022-12-12 15:39:30,684 INFO L137 encePairwiseOnDemand]: 52/58 looper letters, 69 selfloop transitions, 10 changer transitions 2/97 dead transitions. [2022-12-12 15:39:30,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 97 transitions, 526 flow [2022-12-12 15:39:30,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 15:39:30,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 15:39:30,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2022-12-12 15:39:30,685 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4885057471264368 [2022-12-12 15:39:30,685 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 295 flow. Second operand 6 states and 170 transitions. [2022-12-12 15:39:30,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 97 transitions, 526 flow [2022-12-12 15:39:30,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 480 flow, removed 11 selfloop flow, removed 9 redundant places. [2022-12-12 15:39:30,786 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 274 flow [2022-12-12 15:39:30,786 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2022-12-12 15:39:30,786 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2022-12-12 15:39:30,786 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 274 flow [2022-12-12 15:39:30,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:30,787 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:39:30,787 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:39:30,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 15:39:30,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:39:30,994 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 15:39:30,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:39:30,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1125460512, now seen corresponding path program 1 times [2022-12-12 15:39:30,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:39:30,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882898362] [2022-12-12 15:39:30,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:39:30,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:39:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:39:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 15:39:31,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:39:31,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882898362] [2022-12-12 15:39:31,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882898362] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:39:31,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089666149] [2022-12-12 15:39:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:39:31,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:39:31,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:39:31,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 15:39:31,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 15:39:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:39:31,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 15:39:31,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:39:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:39:31,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:39:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:39:31,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089666149] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 15:39:31,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 15:39:31,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 12 [2022-12-12 15:39:31,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100134935] [2022-12-12 15:39:31,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:39:31,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:39:31,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:39:31,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:39:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-12-12 15:39:31,476 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2022-12-12 15:39:31,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:31,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:39:31,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2022-12-12 15:39:31,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:39:32,923 INFO L130 PetriNetUnfolder]: 15768/20053 cut-off events. [2022-12-12 15:39:32,923 INFO L131 PetriNetUnfolder]: For 17767/17767 co-relation queries the response was YES. [2022-12-12 15:39:32,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56091 conditions, 20053 events. 15768/20053 cut-off events. For 17767/17767 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 83463 event pairs, 6989 based on Foata normal form. 106/18767 useless extension candidates. Maximal degree in co-relation 56079. Up to 11540 conditions per place. [2022-12-12 15:39:32,998 INFO L137 encePairwiseOnDemand]: 52/58 looper letters, 71 selfloop transitions, 8 changer transitions 2/97 dead transitions. [2022-12-12 15:39:32,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 97 transitions, 518 flow [2022-12-12 15:39:32,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 15:39:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 15:39:32,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2022-12-12 15:39:33,000 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4885057471264368 [2022-12-12 15:39:33,000 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 274 flow. Second operand 6 states and 170 transitions. [2022-12-12 15:39:33,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 97 transitions, 518 flow [2022-12-12 15:39:33,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 494 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-12-12 15:39:33,033 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 268 flow [2022-12-12 15:39:33,033 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2022-12-12 15:39:33,034 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2022-12-12 15:39:33,034 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 268 flow [2022-12-12 15:39:33,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:33,034 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:39:33,034 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:39:33,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 15:39:33,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:39:33,239 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 15:39:33,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:39:33,240 INFO L85 PathProgramCache]: Analyzing trace with hash -569910185, now seen corresponding path program 1 times [2022-12-12 15:39:33,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:39:33,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322676148] [2022-12-12 15:39:33,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:39:33,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:39:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:39:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:39:34,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:39:34,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322676148] [2022-12-12 15:39:34,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322676148] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:39:34,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099210918] [2022-12-12 15:39:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:39:34,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:39:34,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:39:34,397 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 15:39:34,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 15:39:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:39:34,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 91 conjunts are in the unsatisfiable core [2022-12-12 15:39:34,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:39:35,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 15:39:35,082 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 20 treesize of output 22 [2022-12-12 15:39:35,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 15:39:35,254 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 15:39:35,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 20 [2022-12-12 15:39:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:39:35,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:39:35,512 INFO L321 Elim1Store]: treesize reduction 10, result has 28.6 percent of original size [2022-12-12 15:39:35,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 39 [2022-12-12 15:39:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 15:39:35,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099210918] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:39:35,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:39:35,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 26 [2022-12-12 15:39:35,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957764820] [2022-12-12 15:39:35,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:39:35,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-12 15:39:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:39:35,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-12 15:39:35,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=658, Unknown=1, NotChecked=0, Total=756 [2022-12-12 15:39:35,825 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 58 [2022-12-12 15:39:35,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 268 flow. Second operand has 28 states, 28 states have (on average 11.571428571428571) internal successors, (324), 28 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:39:35,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:39:35,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 58 [2022-12-12 15:39:35,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:40:28,702 INFO L130 PetriNetUnfolder]: 302839/384346 cut-off events. [2022-12-12 15:40:28,702 INFO L131 PetriNetUnfolder]: For 342630/342630 co-relation queries the response was YES. [2022-12-12 15:40:29,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075141 conditions, 384346 events. 302839/384346 cut-off events. For 342630/342630 co-relation queries the response was YES. Maximal size of possible extension queue 7068. Compared 2208769 event pairs, 11193 based on Foata normal form. 783/360011 useless extension candidates. Maximal degree in co-relation 1075130. Up to 78411 conditions per place. [2022-12-12 15:40:30,987 INFO L137 encePairwiseOnDemand]: 41/58 looper letters, 2966 selfloop transitions, 918 changer transitions 291/4182 dead transitions. [2022-12-12 15:40:30,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 4182 transitions, 22563 flow [2022-12-12 15:40:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-12-12 15:40:30,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2022-12-12 15:40:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 5403 transitions. [2022-12-12 15:40:31,000 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4902903811252269 [2022-12-12 15:40:31,000 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 268 flow. Second operand 190 states and 5403 transitions. [2022-12-12 15:40:31,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 4182 transitions, 22563 flow [2022-12-12 15:40:31,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 4182 transitions, 22558 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-12 15:40:31,120 INFO L231 Difference]: Finished difference. Result has 281 places, 1150 transitions, 8963 flow [2022-12-12 15:40:31,121 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=190, PETRI_FLOW=8963, PETRI_PLACES=281, PETRI_TRANSITIONS=1150} [2022-12-12 15:40:31,121 INFO L295 CegarLoopForPetriNet]: 67 programPoint places, 214 predicate places. [2022-12-12 15:40:31,122 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 1150 transitions, 8963 flow [2022-12-12 15:40:31,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.571428571428571) internal successors, (324), 28 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:40:31,122 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:40:31,122 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:40:31,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 15:40:31,326 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 [2022-12-12 15:40:31,327 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 15:40:31,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:40:31,327 INFO L85 PathProgramCache]: Analyzing trace with hash 708978891, now seen corresponding path program 2 times [2022-12-12 15:40:31,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:40:31,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054225157] [2022-12-12 15:40:31,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:40:31,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:40:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:40:32,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:40:32,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:40:32,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054225157] [2022-12-12 15:40:32,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054225157] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:40:32,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232188075] [2022-12-12 15:40:32,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 15:40:32,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:40:32,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:40:32,323 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 15:40:32,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 15:40:32,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 15:40:32,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:40:32,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-12 15:40:32,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:40:33,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 15:40:33,017 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 21 treesize of output 23 [2022-12-12 15:40:33,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-12 15:40:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 15:40:33,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:40:33,366 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 15:40:33,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 49 [2022-12-12 15:40:33,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 14 [2022-12-12 15:40:33,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 15:40:33,387 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-12-12 15:40:33,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 14 [2022-12-12 15:40:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 15:40:33,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232188075] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:40:33,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:40:33,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 24 [2022-12-12 15:40:33,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651139394] [2022-12-12 15:40:33,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:40:33,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 15:40:33,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:40:33,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 15:40:33,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=562, Unknown=14, NotChecked=0, Total=650 [2022-12-12 15:40:33,688 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 58 [2022-12-12 15:40:33,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 1150 transitions, 8963 flow. Second operand has 26 states, 26 states have (on average 11.73076923076923) internal successors, (305), 26 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:40:33,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:40:33,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 58 [2022-12-12 15:40:33,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand