/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/popl20-bad-commit-1.wvr-bad.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 15:42:26,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 15:42:26,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 15:42:26,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 15:42:26,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 15:42:26,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 15:42:26,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 15:42:26,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 15:42:26,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 15:42:26,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 15:42:26,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 15:42:26,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 15:42:26,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 15:42:26,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 15:42:26,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 15:42:26,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 15:42:26,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 15:42:26,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 15:42:26,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 15:42:26,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 15:42:26,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 15:42:26,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 15:42:26,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 15:42:26,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 15:42:26,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 15:42:26,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 15:42:26,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 15:42:26,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 15:42:26,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 15:42:26,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 15:42:26,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 15:42:26,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 15:42:26,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 15:42:26,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 15:42:26,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 15:42:26,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 15:42:26,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 15:42:26,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 15:42:26,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 15:42:26,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 15:42:26,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 15:42:26,710 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 15:42:26,738 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 15:42:26,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 15:42:26,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 15:42:26,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 15:42:26,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 15:42:26,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 15:42:26,740 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 15:42:26,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 15:42:26,740 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 15:42:26,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 15:42:26,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 15:42:26,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 15:42:26,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 15:42:26,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 15:42:26,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 15:42:26,742 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 15:42:26,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 15:42:26,742 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 15:42:26,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 15:42:26,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 15:42:26,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 15:42:26,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 15:42:26,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 15:42:26,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:42:26,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 15:42:26,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 15:42:26,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 15:42:26,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 15:42:26,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 15:42:26,743 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 15:42:26,743 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 15:42:26,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 15:42:27,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 15:42:27,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 15:42:27,011 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 15:42:27,012 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 15:42:27,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2022-12-12 15:42:28,045 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 15:42:28,233 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 15:42:28,234 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2022-12-12 15:42:28,238 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/961ed231c/5fef8c05f5e642e9963a9430327eee6b/FLAG57e8888e7 [2022-12-12 15:42:28,248 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/961ed231c/5fef8c05f5e642e9963a9430327eee6b [2022-12-12 15:42:28,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 15:42:28,250 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 15:42:28,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 15:42:28,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 15:42:28,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 15:42:28,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:42:28" (1/1) ... [2022-12-12 15:42:28,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6c8b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:42:28, skipping insertion in model container [2022-12-12 15:42:28,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:42:28" (1/1) ... [2022-12-12 15:42:28,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 15:42:28,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 15:42:28,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,407 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,411 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,432 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/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2022-12-12 15:42:28,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:42:28,450 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 15:42:28,461 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:42:28,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:42:28,486 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/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2022-12-12 15:42:28,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:42:28,502 INFO L208 MainTranslator]: Completed translation [2022-12-12 15:42:28,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:42:28 WrapperNode [2022-12-12 15:42:28,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 15:42:28,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 15:42:28,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 15:42:28,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 15:42:28,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:42:28" (1/1) ... [2022-12-12 15:42:28,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:42:28" (1/1) ... [2022-12-12 15:42:28,556 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 336 [2022-12-12 15:42:28,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 15:42:28,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 15:42:28,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 15:42:28,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 15:42:28,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:42:28" (1/1) ... [2022-12-12 15:42:28,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:42:28" (1/1) ... [2022-12-12 15:42:28,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:42:28" (1/1) ... [2022-12-12 15:42:28,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:42:28" (1/1) ... [2022-12-12 15:42:28,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:42:28" (1/1) ... [2022-12-12 15:42:28,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:42:28" (1/1) ... [2022-12-12 15:42:28,594 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:42:28" (1/1) ... [2022-12-12 15:42:28,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:42:28" (1/1) ... [2022-12-12 15:42:28,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 15:42:28,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 15:42:28,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 15:42:28,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 15:42:28,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:42:28" (1/1) ... [2022-12-12 15:42:28,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:42:28,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:42:28,640 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 15:42:28,642 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 15:42:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 15:42:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 15:42:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 15:42:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 15:42:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 15:42:28,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 15:42:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 15:42:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 15:42:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 15:42:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 15:42:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 15:42:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 15:42:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 15:42:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 15:42:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 15:42:28,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 15:42:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 15:42:28,672 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 15:42:28,801 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 15:42:28,803 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 15:42:29,156 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 15:42:29,246 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 15:42:29,247 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-12 15:42:29,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:42:29 BoogieIcfgContainer [2022-12-12 15:42:29,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 15:42:29,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 15:42:29,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 15:42:29,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 15:42:29,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 03:42:28" (1/3) ... [2022-12-12 15:42:29,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d04d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:42:29, skipping insertion in model container [2022-12-12 15:42:29,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:42:28" (2/3) ... [2022-12-12 15:42:29,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d04d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:42:29, skipping insertion in model container [2022-12-12 15:42:29,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:42:29" (3/3) ... [2022-12-12 15:42:29,254 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2022-12-12 15:42:29,266 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 15:42:29,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 15:42:29,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 15:42:29,348 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 15:42:29,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 253 transitions, 530 flow [2022-12-12 15:42:29,474 INFO L130 PetriNetUnfolder]: 27/250 cut-off events. [2022-12-12 15:42:29,474 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 15:42:29,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 250 events. 27/250 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 176 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 211. Up to 6 conditions per place. [2022-12-12 15:42:29,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 253 transitions, 530 flow [2022-12-12 15:42:29,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 240 transitions, 498 flow [2022-12-12 15:42:29,489 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 15:42:29,505 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 240 transitions, 498 flow [2022-12-12 15:42:29,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 240 transitions, 498 flow [2022-12-12 15:42:29,554 INFO L130 PetriNetUnfolder]: 27/240 cut-off events. [2022-12-12 15:42:29,555 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 15:42:29,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 240 events. 27/240 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 176 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 211. Up to 6 conditions per place. [2022-12-12 15:42:29,561 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 240 transitions, 498 flow [2022-12-12 15:42:29,561 INFO L226 LiptonReduction]: Number of co-enabled transitions 2442 [2022-12-12 15:42:37,627 INFO L241 LiptonReduction]: Total number of compositions: 210 [2022-12-12 15:42:37,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 15:42:37,642 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;@6d698e45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 15:42:37,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 15:42:37,678 INFO L130 PetriNetUnfolder]: 6/24 cut-off events. [2022-12-12 15:42:37,678 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 15:42:37,678 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:37,679 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:42:37,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:42:37,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:37,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1929606784, now seen corresponding path program 1 times [2022-12-12 15:42:37,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:37,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605341465] [2022-12-12 15:42:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:37,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:38,116 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 15:42:38,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:38,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605341465] [2022-12-12 15:42:38,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605341465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:42:38,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:42:38,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 15:42:38,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238172221] [2022-12-12 15:42:38,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:42:38,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 15:42:38,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:42:38,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 15:42:38,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 15:42:38,151 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 15:42:38,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 68 flow. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 15:42:38,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:42:38,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 15:42:38,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:38,233 INFO L130 PetriNetUnfolder]: 164/251 cut-off events. [2022-12-12 15:42:38,234 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-12-12 15:42:38,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 251 events. 164/251 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 607 event pairs, 37 based on Foata normal form. 1/161 useless extension candidates. Maximal degree in co-relation 376. Up to 167 conditions per place. [2022-12-12 15:42:38,236 INFO L137 encePairwiseOnDemand]: 20/25 looper letters, 36 selfloop transitions, 4 changer transitions 1/41 dead transitions. [2022-12-12 15:42:38,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 197 flow [2022-12-12 15:42:38,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 15:42:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 15:42:38,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2022-12-12 15:42:38,244 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.56 [2022-12-12 15:42:38,245 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 68 flow. Second operand 3 states and 42 transitions. [2022-12-12 15:42:38,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 197 flow [2022-12-12 15:42:38,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 41 transitions, 175 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-12 15:42:38,248 INFO L231 Difference]: Finished difference. Result has 26 places, 28 transitions, 82 flow [2022-12-12 15:42:38,249 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=28} [2022-12-12 15:42:38,253 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2022-12-12 15:42:38,254 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 28 transitions, 82 flow [2022-12-12 15:42:38,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 15:42:38,254 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:38,254 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] [2022-12-12 15:42:38,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 15:42:38,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:42:38,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:38,261 INFO L85 PathProgramCache]: Analyzing trace with hash 495866599, now seen corresponding path program 1 times [2022-12-12 15:42:38,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:38,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928370852] [2022-12-12 15:42:38,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:38,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:42:38,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:38,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928370852] [2022-12-12 15:42:38,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928370852] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:42:38,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:42:38,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 15:42:38,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13411606] [2022-12-12 15:42:38,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:42:38,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 15:42:38,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:42:38,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 15:42:38,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 15:42:38,477 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 15:42:38,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 28 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 15:42:38,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:42:38,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 15:42:38,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:38,602 INFO L130 PetriNetUnfolder]: 299/473 cut-off events. [2022-12-12 15:42:38,603 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2022-12-12 15:42:38,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 473 events. 299/473 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1380 event pairs, 174 based on Foata normal form. 28/495 useless extension candidates. Maximal degree in co-relation 350. Up to 252 conditions per place. [2022-12-12 15:42:38,608 INFO L137 encePairwiseOnDemand]: 21/25 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2022-12-12 15:42:38,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 53 transitions, 256 flow [2022-12-12 15:42:38,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 15:42:38,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 15:42:38,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2022-12-12 15:42:38,610 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49 [2022-12-12 15:42:38,610 INFO L175 Difference]: Start difference. First operand has 26 places, 28 transitions, 82 flow. Second operand 4 states and 49 transitions. [2022-12-12 15:42:38,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 53 transitions, 256 flow [2022-12-12 15:42:38,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 53 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 15:42:38,612 INFO L231 Difference]: Finished difference. Result has 30 places, 30 transitions, 100 flow [2022-12-12 15:42:38,613 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=30, PETRI_TRANSITIONS=30} [2022-12-12 15:42:38,613 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2022-12-12 15:42:38,613 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 30 transitions, 100 flow [2022-12-12 15:42:38,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 15:42:38,613 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:38,613 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] [2022-12-12 15:42:38,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 15:42:38,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:42:38,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:38,615 INFO L85 PathProgramCache]: Analyzing trace with hash 366060260, now seen corresponding path program 1 times [2022-12-12 15:42:38,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:38,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757384905] [2022-12-12 15:42:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:38,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:42:38,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:38,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757384905] [2022-12-12 15:42:38,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757384905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:42:38,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:42:38,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:42:38,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930526117] [2022-12-12 15:42:38,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:42:38,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 15:42:38,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:42:38,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 15:42:38,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 15:42:38,985 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 15:42:38,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 15:42:38,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:42:38,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 15:42:38,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:39,152 INFO L130 PetriNetUnfolder]: 385/639 cut-off events. [2022-12-12 15:42:39,152 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2022-12-12 15:42:39,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1534 conditions, 639 events. 385/639 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2340 event pairs, 148 based on Foata normal form. 56/686 useless extension candidates. Maximal degree in co-relation 845. Up to 307 conditions per place. [2022-12-12 15:42:39,155 INFO L137 encePairwiseOnDemand]: 15/25 looper letters, 46 selfloop transitions, 12 changer transitions 2/60 dead transitions. [2022-12-12 15:42:39,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 60 transitions, 294 flow [2022-12-12 15:42:39,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 15:42:39,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 15:42:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2022-12-12 15:42:39,156 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2022-12-12 15:42:39,156 INFO L175 Difference]: Start difference. First operand has 30 places, 30 transitions, 100 flow. Second operand 6 states and 62 transitions. [2022-12-12 15:42:39,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 60 transitions, 294 flow [2022-12-12 15:42:39,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 60 transitions, 290 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-12 15:42:39,158 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 152 flow [2022-12-12 15:42:39,158 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=152, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2022-12-12 15:42:39,159 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2022-12-12 15:42:39,159 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 152 flow [2022-12-12 15:42:39,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 15:42:39,159 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:39,159 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] [2022-12-12 15:42:39,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 15:42:39,159 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:42:39,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:39,160 INFO L85 PathProgramCache]: Analyzing trace with hash 146229183, now seen corresponding path program 1 times [2022-12-12 15:42:39,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:39,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066680496] [2022-12-12 15:42:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:39,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:42:39,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:39,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066680496] [2022-12-12 15:42:39,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066680496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:42:39,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:42:39,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:42:39,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649986542] [2022-12-12 15:42:39,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:42:39,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 15:42:39,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:42:39,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 15:42:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 15:42:39,346 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 15:42:39,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 15:42:39,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:42:39,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 15:42:39,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:39,464 INFO L130 PetriNetUnfolder]: 291/507 cut-off events. [2022-12-12 15:42:39,464 INFO L131 PetriNetUnfolder]: For 377/377 co-relation queries the response was YES. [2022-12-12 15:42:39,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 507 events. 291/507 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1765 event pairs, 198 based on Foata normal form. 32/537 useless extension candidates. Maximal degree in co-relation 941. Up to 342 conditions per place. [2022-12-12 15:42:39,466 INFO L137 encePairwiseOnDemand]: 20/25 looper letters, 32 selfloop transitions, 2 changer transitions 23/57 dead transitions. [2022-12-12 15:42:39,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 339 flow [2022-12-12 15:42:39,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:42:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:42:39,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 46 transitions. [2022-12-12 15:42:39,469 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.368 [2022-12-12 15:42:39,469 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 152 flow. Second operand 5 states and 46 transitions. [2022-12-12 15:42:39,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 339 flow [2022-12-12 15:42:39,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 323 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-12 15:42:39,470 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 144 flow [2022-12-12 15:42:39,470 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2022-12-12 15:42:39,471 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2022-12-12 15:42:39,471 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 144 flow [2022-12-12 15:42:39,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 15:42:39,471 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:39,471 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] [2022-12-12 15:42:39,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 15:42:39,471 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:42:39,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:39,472 INFO L85 PathProgramCache]: Analyzing trace with hash 387567051, now seen corresponding path program 1 times [2022-12-12 15:42:39,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:39,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081882130] [2022-12-12 15:42:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:39,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:42:39,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:39,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081882130] [2022-12-12 15:42:39,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081882130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:42:39,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:42:39,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 15:42:39,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812066986] [2022-12-12 15:42:39,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:42:39,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 15:42:39,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:42:39,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 15:42:39,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 15:42:39,624 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 15:42:39,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 15:42:39,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:42:39,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 15:42:39,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:39,716 INFO L130 PetriNetUnfolder]: 274/454 cut-off events. [2022-12-12 15:42:39,716 INFO L131 PetriNetUnfolder]: For 218/218 co-relation queries the response was YES. [2022-12-12 15:42:39,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 454 events. 274/454 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1420 event pairs, 114 based on Foata normal form. 44/497 useless extension candidates. Maximal degree in co-relation 1107. Up to 266 conditions per place. [2022-12-12 15:42:39,718 INFO L137 encePairwiseOnDemand]: 22/25 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2022-12-12 15:42:39,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 315 flow [2022-12-12 15:42:39,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 15:42:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 15:42:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 51 transitions. [2022-12-12 15:42:39,719 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.51 [2022-12-12 15:42:39,719 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 144 flow. Second operand 4 states and 51 transitions. [2022-12-12 15:42:39,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 315 flow [2022-12-12 15:42:39,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 57 transitions, 303 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-12-12 15:42:39,721 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 143 flow [2022-12-12 15:42:39,721 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2022-12-12 15:42:39,721 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2022-12-12 15:42:39,721 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 143 flow [2022-12-12 15:42:39,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 15:42:39,721 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:39,722 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] [2022-12-12 15:42:39,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 15:42:39,722 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:42:39,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:39,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2095781175, now seen corresponding path program 1 times [2022-12-12 15:42:39,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:39,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625445644] [2022-12-12 15:42:39,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:39,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:42:39,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:39,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625445644] [2022-12-12 15:42:39,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625445644] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:42:39,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654149164] [2022-12-12 15:42:39,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:39,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:42:39,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:42:39,850 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 15:42:39,903 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 15:42:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:39,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 15:42:39,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:42:40,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:42:40,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:42:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:42:40,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654149164] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:42:40,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:42:40,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-12 15:42:40,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117267612] [2022-12-12 15:42:40,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:42:40,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:42:40,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:42:40,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:42:40,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-12 15:42:40,234 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 15:42:40,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 143 flow. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 15:42:40,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:42:40,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 15:42:40,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:40,325 INFO L130 PetriNetUnfolder]: 322/531 cut-off events. [2022-12-12 15:42:40,326 INFO L131 PetriNetUnfolder]: For 214/214 co-relation queries the response was YES. [2022-12-12 15:42:40,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1358 conditions, 531 events. 322/531 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1798 event pairs, 90 based on Foata normal form. 1/531 useless extension candidates. Maximal degree in co-relation 1348. Up to 281 conditions per place. [2022-12-12 15:42:40,328 INFO L137 encePairwiseOnDemand]: 21/25 looper letters, 46 selfloop transitions, 5 changer transitions 3/54 dead transitions. [2022-12-12 15:42:40,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 305 flow [2022-12-12 15:42:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 15:42:40,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 15:42:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2022-12-12 15:42:40,329 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.47 [2022-12-12 15:42:40,329 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 143 flow. Second operand 4 states and 47 transitions. [2022-12-12 15:42:40,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 305 flow [2022-12-12 15:42:40,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 54 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 15:42:40,330 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 173 flow [2022-12-12 15:42:40,331 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2022-12-12 15:42:40,331 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2022-12-12 15:42:40,331 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 173 flow [2022-12-12 15:42:40,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 15:42:40,331 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:40,331 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] [2022-12-12 15:42:40,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 15:42:40,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-12 15:42:40,536 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:42:40,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:40,537 INFO L85 PathProgramCache]: Analyzing trace with hash -62177186, now seen corresponding path program 2 times [2022-12-12 15:42:40,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:40,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996538272] [2022-12-12 15:42:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:40,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:42:40,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:40,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996538272] [2022-12-12 15:42:40,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996538272] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:42:40,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716716655] [2022-12-12 15:42:40,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 15:42:40,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:42:40,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:42:40,735 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 15:42:40,737 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 15:42:40,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 15:42:40,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:42:40,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 15:42:40,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:42:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:42:41,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:42:41,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 15:42:41,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 292 treesize of output 302 [2022-12-12 15:42:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:42:41,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716716655] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:42:41,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:42:41,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2022-12-12 15:42:41,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164118853] [2022-12-12 15:42:41,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:42:41,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 15:42:41,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:42:41,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 15:42:41,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-12-12 15:42:41,481 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 15:42:41,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 173 flow. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 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 15:42:41,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:42:41,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 15:42:41,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:41,724 INFO L130 PetriNetUnfolder]: 488/842 cut-off events. [2022-12-12 15:42:41,724 INFO L131 PetriNetUnfolder]: For 652/652 co-relation queries the response was YES. [2022-12-12 15:42:41,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2216 conditions, 842 events. 488/842 cut-off events. For 652/652 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3484 event pairs, 162 based on Foata normal form. 56/896 useless extension candidates. Maximal degree in co-relation 2205. Up to 196 conditions per place. [2022-12-12 15:42:41,727 INFO L137 encePairwiseOnDemand]: 16/25 looper letters, 68 selfloop transitions, 13 changer transitions 21/102 dead transitions. [2022-12-12 15:42:41,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 102 transitions, 572 flow [2022-12-12 15:42:41,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 15:42:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 15:42:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2022-12-12 15:42:41,728 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.43555555555555553 [2022-12-12 15:42:41,729 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 173 flow. Second operand 9 states and 98 transitions. [2022-12-12 15:42:41,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 102 transitions, 572 flow [2022-12-12 15:42:41,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 102 transitions, 557 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-12 15:42:41,731 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 233 flow [2022-12-12 15:42:41,731 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=233, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2022-12-12 15:42:41,731 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2022-12-12 15:42:41,732 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 233 flow [2022-12-12 15:42:41,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 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 15:42:41,732 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:41,732 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] [2022-12-12 15:42:41,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 15:42:41,938 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,SelfDestructingSolverStorable6 [2022-12-12 15:42:41,938 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:42:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash 315875907, now seen corresponding path program 1 times [2022-12-12 15:42:41,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:41,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339290225] [2022-12-12 15:42:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:41,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:42:42,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:42,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339290225] [2022-12-12 15:42:42,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339290225] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:42:42,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740045022] [2022-12-12 15:42:42,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:42,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:42:42,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:42:42,687 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 15:42:42,689 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 15:42:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:42,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-12 15:42:42,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:42:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:42:42,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:42:43,485 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 15:42:43,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 379 treesize of output 491 [2022-12-12 15:42:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:42:46,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740045022] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:42:46,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:42:46,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2022-12-12 15:42:46,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175452087] [2022-12-12 15:42:46,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:42:46,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-12 15:42:46,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:42:46,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-12 15:42:46,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-12-12 15:42:46,887 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 15:42:46,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 233 flow. Second operand has 17 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 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 15:42:46,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:42:46,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 15:42:46,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:47,530 INFO L130 PetriNetUnfolder]: 1082/1844 cut-off events. [2022-12-12 15:42:47,530 INFO L131 PetriNetUnfolder]: For 2318/2318 co-relation queries the response was YES. [2022-12-12 15:42:47,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5327 conditions, 1844 events. 1082/1844 cut-off events. For 2318/2318 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9245 event pairs, 308 based on Foata normal form. 6/1846 useless extension candidates. Maximal degree in co-relation 5313. Up to 479 conditions per place. [2022-12-12 15:42:47,537 INFO L137 encePairwiseOnDemand]: 18/25 looper letters, 80 selfloop transitions, 30 changer transitions 29/139 dead transitions. [2022-12-12 15:42:47,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 139 transitions, 913 flow [2022-12-12 15:42:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 15:42:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 15:42:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2022-12-12 15:42:47,538 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2022-12-12 15:42:47,538 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 233 flow. Second operand 12 states and 118 transitions. [2022-12-12 15:42:47,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 139 transitions, 913 flow [2022-12-12 15:42:47,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 139 transitions, 908 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-12 15:42:47,544 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 517 flow [2022-12-12 15:42:47,544 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=517, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2022-12-12 15:42:47,546 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2022-12-12 15:42:47,546 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 517 flow [2022-12-12 15:42:47,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 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 15:42:47,546 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:47,546 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] [2022-12-12 15:42:47,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-12 15:42:47,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:42:47,751 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:42:47,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:47,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1210510908, now seen corresponding path program 1 times [2022-12-12 15:42:47,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:47,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715463572] [2022-12-12 15:42:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:47,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:48,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:42:48,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:48,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715463572] [2022-12-12 15:42:48,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715463572] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:42:48,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947851672] [2022-12-12 15:42:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:48,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:42:48,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:42:48,020 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 15:42:48,039 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 15:42:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:48,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 15:42:48,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:42:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 15:42:48,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 15:42:48,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947851672] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:42:48,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 15:42:48,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-12-12 15:42:48,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712702164] [2022-12-12 15:42:48,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:42:48,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 15:42:48,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:42:48,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 15:42:48,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-12 15:42:48,205 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 15:42:48,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 517 flow. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 15:42:48,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:42:48,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 15:42:48,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:48,513 INFO L130 PetriNetUnfolder]: 1546/2658 cut-off events. [2022-12-12 15:42:48,514 INFO L131 PetriNetUnfolder]: For 5422/5422 co-relation queries the response was YES. [2022-12-12 15:42:48,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8332 conditions, 2658 events. 1546/2658 cut-off events. For 5422/5422 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 14821 event pairs, 1184 based on Foata normal form. 96/2750 useless extension candidates. Maximal degree in co-relation 8315. Up to 1194 conditions per place. [2022-12-12 15:42:48,523 INFO L137 encePairwiseOnDemand]: 17/25 looper letters, 82 selfloop transitions, 19 changer transitions 0/101 dead transitions. [2022-12-12 15:42:48,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 101 transitions, 965 flow [2022-12-12 15:42:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 15:42:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 15:42:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2022-12-12 15:42:48,525 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2022-12-12 15:42:48,525 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 517 flow. Second operand 6 states and 61 transitions. [2022-12-12 15:42:48,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 101 transitions, 965 flow [2022-12-12 15:42:48,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 101 transitions, 845 flow, removed 50 selfloop flow, removed 3 redundant places. [2022-12-12 15:42:48,533 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 475 flow [2022-12-12 15:42:48,533 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2022-12-12 15:42:48,534 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2022-12-12 15:42:48,534 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 475 flow [2022-12-12 15:42:48,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 15:42:48,534 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:48,535 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:42:48,555 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 15:42:48,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:42:48,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:42:48,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:48,746 INFO L85 PathProgramCache]: Analyzing trace with hash 690711797, now seen corresponding path program 2 times [2022-12-12 15:42:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:48,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801160834] [2022-12-12 15:42:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:49,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 15:42:49,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:49,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801160834] [2022-12-12 15:42:49,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801160834] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:42:49,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850568904] [2022-12-12 15:42:49,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 15:42:49,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:42:49,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:42:49,089 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 15:42:49,139 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 15:42:49,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 15:42:49,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:42:49,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 15:42:49,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:42:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 15:42:49,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:42:49,740 INFO L321 Elim1Store]: treesize reduction 38, result has 78.5 percent of original size [2022-12-12 15:42:49,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 634 treesize of output 692 [2022-12-12 15:42:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 15:42:50,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850568904] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:42:50,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:42:50,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-12 15:42:50,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497392681] [2022-12-12 15:42:50,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:42:50,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 15:42:50,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:42:50,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 15:42:50,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-12-12 15:42:50,191 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 15:42:50,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 475 flow. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 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 15:42:50,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:42:50,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 15:42:50,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:50,696 INFO L130 PetriNetUnfolder]: 1556/2670 cut-off events. [2022-12-12 15:42:50,696 INFO L131 PetriNetUnfolder]: For 4758/4758 co-relation queries the response was YES. [2022-12-12 15:42:50,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7913 conditions, 2670 events. 1556/2670 cut-off events. For 4758/4758 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14661 event pairs, 364 based on Foata normal form. 40/2706 useless extension candidates. Maximal degree in co-relation 7896. Up to 560 conditions per place. [2022-12-12 15:42:50,706 INFO L137 encePairwiseOnDemand]: 16/25 looper letters, 82 selfloop transitions, 29 changer transitions 33/144 dead transitions. [2022-12-12 15:42:50,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 144 transitions, 1070 flow [2022-12-12 15:42:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 15:42:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 15:42:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2022-12-12 15:42:50,708 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4036363636363636 [2022-12-12 15:42:50,708 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 475 flow. Second operand 11 states and 111 transitions. [2022-12-12 15:42:50,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 144 transitions, 1070 flow [2022-12-12 15:42:50,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 144 transitions, 1041 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-12 15:42:50,717 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 562 flow [2022-12-12 15:42:50,717 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=562, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2022-12-12 15:42:50,718 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2022-12-12 15:42:50,718 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 562 flow [2022-12-12 15:42:50,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 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 15:42:50,718 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:50,718 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] [2022-12-12 15:42:50,726 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 15:42:50,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-12 15:42:50,924 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:42:50,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:50,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1907291858, now seen corresponding path program 1 times [2022-12-12 15:42:50,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:50,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269577818] [2022-12-12 15:42:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:50,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:42:51,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:51,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269577818] [2022-12-12 15:42:51,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269577818] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:42:51,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483381094] [2022-12-12 15:42:51,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:51,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:42:51,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:42:51,295 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 15:42:51,310 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 15:42:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:51,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 15:42:51,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:42:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:42:51,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:42:52,556 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 15:42:52,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 557 treesize of output 648 [2022-12-12 15:42:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:42:53,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483381094] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:42:53,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:42:53,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-12-12 15:42:53,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447374] [2022-12-12 15:42:53,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:42:53,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 15:42:53,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:42:53,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 15:42:53,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-12 15:42:53,939 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 15:42:53,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 562 flow. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 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 15:42:53,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:42:53,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 15:42:53,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:54,569 INFO L130 PetriNetUnfolder]: 1620/2798 cut-off events. [2022-12-12 15:42:54,569 INFO L131 PetriNetUnfolder]: For 6854/6854 co-relation queries the response was YES. [2022-12-12 15:42:54,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8530 conditions, 2798 events. 1620/2798 cut-off events. For 6854/6854 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15294 event pairs, 344 based on Foata normal form. 112/2906 useless extension candidates. Maximal degree in co-relation 8510. Up to 656 conditions per place. [2022-12-12 15:42:54,578 INFO L137 encePairwiseOnDemand]: 21/25 looper letters, 86 selfloop transitions, 23 changer transitions 21/130 dead transitions. [2022-12-12 15:42:54,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 130 transitions, 1071 flow [2022-12-12 15:42:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 15:42:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 15:42:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2022-12-12 15:42:54,579 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.48 [2022-12-12 15:42:54,579 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 562 flow. Second operand 8 states and 96 transitions. [2022-12-12 15:42:54,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 130 transitions, 1071 flow [2022-12-12 15:42:54,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 130 transitions, 1031 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-12-12 15:42:54,586 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 554 flow [2022-12-12 15:42:54,586 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=554, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2022-12-12 15:42:54,587 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2022-12-12 15:42:54,587 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 554 flow [2022-12-12 15:42:54,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 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 15:42:54,587 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:54,587 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] [2022-12-12 15:42:54,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 15:42:54,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:42:54,791 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:42:54,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:54,792 INFO L85 PathProgramCache]: Analyzing trace with hash -321034558, now seen corresponding path program 1 times [2022-12-12 15:42:54,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:54,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525220027] [2022-12-12 15:42:54,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:54,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:55,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 15:42:55,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:55,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525220027] [2022-12-12 15:42:55,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525220027] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:42:55,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051638805] [2022-12-12 15:42:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:55,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:42:55,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:42:55,069 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 15:42:55,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 15:42:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:55,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 15:42:55,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:42:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 15:42:55,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:42:55,623 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 15:42:55,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 589 treesize of output 624 [2022-12-12 15:42:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 15:42:56,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051638805] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:42:56,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:42:56,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-12-12 15:42:56,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724482689] [2022-12-12 15:42:56,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:42:56,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 15:42:56,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:42:56,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 15:42:56,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-12-12 15:42:56,090 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 15:42:56,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 554 flow. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 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 15:42:56,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:42:56,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 15:42:56,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:56,369 INFO L130 PetriNetUnfolder]: 1184/2018 cut-off events. [2022-12-12 15:42:56,370 INFO L131 PetriNetUnfolder]: For 6364/6364 co-relation queries the response was YES. [2022-12-12 15:42:56,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6619 conditions, 2018 events. 1184/2018 cut-off events. For 6364/6364 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10127 event pairs, 396 based on Foata normal form. 48/2062 useless extension candidates. Maximal degree in co-relation 6598. Up to 1151 conditions per place. [2022-12-12 15:42:56,378 INFO L137 encePairwiseOnDemand]: 22/25 looper letters, 54 selfloop transitions, 7 changer transitions 12/73 dead transitions. [2022-12-12 15:42:56,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 655 flow [2022-12-12 15:42:56,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 15:42:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 15:42:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2022-12-12 15:42:56,378 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.47 [2022-12-12 15:42:56,379 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 554 flow. Second operand 4 states and 47 transitions. [2022-12-12 15:42:56,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 655 flow [2022-12-12 15:42:56,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 589 flow, removed 7 selfloop flow, removed 9 redundant places. [2022-12-12 15:42:56,384 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 415 flow [2022-12-12 15:42:56,384 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=415, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2022-12-12 15:42:56,385 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2022-12-12 15:42:56,385 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 415 flow [2022-12-12 15:42:56,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 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 15:42:56,385 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:56,385 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 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 15:42:56,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 15:42:56,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:42:56,592 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:42:56,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:56,592 INFO L85 PathProgramCache]: Analyzing trace with hash 35804703, now seen corresponding path program 1 times [2022-12-12 15:42:56,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:56,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029792536] [2022-12-12 15:42:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:56,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:42:57,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:57,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029792536] [2022-12-12 15:42:57,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029792536] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:42:57,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053170185] [2022-12-12 15:42:57,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:57,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:42:57,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:42:57,295 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 15:42:57,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 15:42:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:57,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 15:42:57,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:42:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:42:57,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:42:58,899 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 15:42:58,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 429 treesize of output 631 [2022-12-12 15:43:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:43:01,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053170185] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 15:43:01,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 15:43:01,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2022-12-12 15:43:01,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102001451] [2022-12-12 15:43:01,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 15:43:01,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-12 15:43:01,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:43:01,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-12 15:43:01,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-12-12 15:43:01,322 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 15:43:01,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 415 flow. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 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 15:43:01,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:43:01,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 15:43:01,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:43:02,317 INFO L130 PetriNetUnfolder]: 1104/1906 cut-off events. [2022-12-12 15:43:02,317 INFO L131 PetriNetUnfolder]: For 4000/4000 co-relation queries the response was YES. [2022-12-12 15:43:02,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5813 conditions, 1906 events. 1104/1906 cut-off events. For 4000/4000 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9663 event pairs, 166 based on Foata normal form. 50/1952 useless extension candidates. Maximal degree in co-relation 5793. Up to 435 conditions per place. [2022-12-12 15:43:02,323 INFO L137 encePairwiseOnDemand]: 15/25 looper letters, 87 selfloop transitions, 33 changer transitions 52/172 dead transitions. [2022-12-12 15:43:02,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 172 transitions, 1144 flow [2022-12-12 15:43:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-12 15:43:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-12 15:43:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 158 transitions. [2022-12-12 15:43:02,325 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42133333333333334 [2022-12-12 15:43:02,325 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 415 flow. Second operand 15 states and 158 transitions. [2022-12-12 15:43:02,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 172 transitions, 1144 flow [2022-12-12 15:43:02,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 172 transitions, 1096 flow, removed 15 selfloop flow, removed 3 redundant places. [2022-12-12 15:43:02,330 INFO L231 Difference]: Finished difference. Result has 82 places, 63 transitions, 578 flow [2022-12-12 15:43:02,330 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=578, PETRI_PLACES=82, PETRI_TRANSITIONS=63} [2022-12-12 15:43:02,330 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2022-12-12 15:43:02,330 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 63 transitions, 578 flow [2022-12-12 15:43:02,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 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 15:43:02,331 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:43:02,331 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] [2022-12-12 15:43:02,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 15:43:02,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-12 15:43:02,536 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:43:02,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:43:02,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2111456358, now seen corresponding path program 2 times [2022-12-12 15:43:02,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:43:02,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529671297] [2022-12-12 15:43:02,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:43:02,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:43:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:43:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 15:43:03,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:43:03,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529671297] [2022-12-12 15:43:03,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529671297] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 15:43:03,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647808915] [2022-12-12 15:43:03,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 15:43:03,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 15:43:03,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:43:03,452 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 15:43:03,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 15:43:03,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 15:43:03,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 15:43:03,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-12 15:43:03,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 15:43:03,627 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 26 treesize of output 24 [2022-12-12 15:43:03,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-12 15:43:03,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 15:43:03,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 15:43:03,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 15:43:04,136 INFO L321 Elim1Store]: treesize reduction 49, result has 53.3 percent of original size [2022-12-12 15:43:04,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 108 [2022-12-12 15:43:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 15:43:04,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 15:43:16,293 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 15:43:16,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 50 [2022-12-12 15:43:16,302 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-12 15:43:16,302 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 1622 treesize of output 1501 [2022-12-12 15:43:16,318 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-12 15:43:16,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1494 treesize of output 1398 [2022-12-12 15:43:16,328 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-12 15:43:16,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1398 treesize of output 1014 [2022-12-12 15:43:16,338 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-12 15:43:16,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1014 treesize of output 822 [2022-12-12 15:43:16,496 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 15:43:16,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 50 [2022-12-12 15:43:16,504 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-12 15:43:16,504 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 398 treesize of output 373 [2022-12-12 15:43:16,513 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-12 15:43:16,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 366 treesize of output 270 [2022-12-12 15:43:16,519 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-12 15:43:16,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 270 treesize of output 222 [2022-12-12 15:43:16,525 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-12 15:43:16,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 222 treesize of output 198 [2022-12-12 15:43:16,608 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 15:43:16,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 51 [2022-12-12 15:43:16,626 INFO L321 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2022-12-12 15:43:16,627 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 108534 treesize of output 99846 [2022-12-12 15:43:16,871 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 15:43:16,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99830 treesize of output 86535 [2022-12-12 15:43:17,099 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 15:43:17,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86518 treesize of output 79879 [2022-12-12 15:43:17,329 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 15:43:17,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79862 treesize of output 53255 Received shutdown request... [2022-12-12 15:56:55,045 WARN L249 SmtUtils]: Removed 2 from assertion stack [2022-12-12 15:56:55,046 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 15:56:55,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 15:56:55,063 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 15:56:55,063 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 15:56:55,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-12 15:56:55,251 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 5ms.. [2022-12-12 15:56:55,253 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 15:56:55,253 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 15:56:55,253 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 15:56:55,253 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:56:55,255 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 15:56:55,255 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 15:56:55,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 03:56:55 BasicIcfg [2022-12-12 15:56:55,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 15:56:55,257 INFO L158 Benchmark]: Toolchain (without parser) took 867006.30ms. Allocated memory was 220.2MB in the beginning and 759.2MB in the end (delta: 539.0MB). Free memory was 197.9MB in the beginning and 670.8MB in the end (delta: -472.9MB). Peak memory consumption was 470.8MB. Max. memory is 8.0GB. [2022-12-12 15:56:55,257 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 220.2MB. Free memory is still 196.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 15:56:55,257 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.66ms. Allocated memory is still 220.2MB. Free memory was 197.9MB in the beginning and 183.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 15:56:55,257 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.52ms. Allocated memory is still 220.2MB. Free memory was 183.2MB in the beginning and 180.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-12 15:56:55,257 INFO L158 Benchmark]: Boogie Preprocessor took 40.12ms. Allocated memory is still 220.2MB. Free memory was 180.0MB in the beginning and 178.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 15:56:55,257 INFO L158 Benchmark]: RCFGBuilder took 651.29ms. Allocated memory is still 220.2MB. Free memory was 178.0MB in the beginning and 131.6MB in the end (delta: 46.4MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. [2022-12-12 15:56:55,258 INFO L158 Benchmark]: TraceAbstraction took 866006.32ms. Allocated memory was 220.2MB in the beginning and 759.2MB in the end (delta: 539.0MB). Free memory was 130.2MB in the beginning and 670.8MB in the end (delta: -540.5MB). Peak memory consumption was 403.7MB. Max. memory is 8.0GB. [2022-12-12 15:56:55,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 220.2MB. Free memory is still 196.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 251.66ms. Allocated memory is still 220.2MB. Free memory was 197.9MB in the beginning and 183.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.52ms. Allocated memory is still 220.2MB. Free memory was 183.2MB in the beginning and 180.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.12ms. Allocated memory is still 220.2MB. Free memory was 180.0MB in the beginning and 178.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 651.29ms. Allocated memory is still 220.2MB. Free memory was 178.0MB in the beginning and 131.6MB in the end (delta: 46.4MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. * TraceAbstraction took 866006.32ms. Allocated memory was 220.2MB in the beginning and 759.2MB in the end (delta: 539.0MB). Free memory was 130.2MB in the beginning and 670.8MB in the end (delta: -540.5MB). Peak memory consumption was 403.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.1s, 223 PlacesBefore, 29 PlacesAfterwards, 240 TransitionsBefore, 25 TransitionsAfterwards, 2442 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 154 TrivialYvCompositions, 40 ConcurrentYvCompositions, 16 ChoiceCompositions, 210 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1539, independent: 1539, independent conditional: 1539, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1539, independent: 1539, independent conditional: 0, independent unconditional: 1539, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1539, independent: 1539, independent conditional: 0, independent unconditional: 1539, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1539, independent: 1539, independent conditional: 0, independent unconditional: 1539, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1164, independent: 1164, independent conditional: 0, independent unconditional: 1164, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1164, independent: 1164, independent conditional: 0, independent unconditional: 1164, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1539, independent: 375, independent conditional: 0, independent unconditional: 375, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1164, unknown conditional: 0, unknown unconditional: 1164] , Statistics on independence cache: Total cache size (in pairs): 2182, Positive cache size: 2182, Positive conditional cache size: 0, Positive unconditional cache size: 2182, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 162]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 5ms.. - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 5ms.. - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 5ms.. - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 5ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 264 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 865.9s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1385 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1385 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1928 IncrementalHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 0 mSDtfsCounter, 1928 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 412 GetRequests, 294 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=578occurred in iteration=13, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 16.9s InterpolantComputationTime, 470 NumberOfCodeBlocks, 470 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 604 ConstructedInterpolants, 16 QuantifiedInterpolants, 10292 SizeOfPredicates, 308 NumberOfNonLiveVariables, 2585 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 28 InterpolantComputations, 6 PerfectInterpolantSequences, 82/121 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown