/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-commit-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 21:32:43,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 21:32:43,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 21:32:43,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 21:32:43,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 21:32:43,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 21:32:43,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 21:32:43,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 21:32:43,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 21:32:43,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 21:32:43,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 21:32:43,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 21:32:43,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 21:32:43,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 21:32:43,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 21:32:43,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 21:32:43,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 21:32:43,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 21:32:43,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 21:32:43,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 21:32:43,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 21:32:43,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 21:32:43,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 21:32:43,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 21:32:43,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 21:32:43,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 21:32:43,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 21:32:43,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 21:32:43,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 21:32:43,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 21:32:43,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 21:32:43,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 21:32:43,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 21:32:43,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 21:32:43,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 21:32:43,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 21:32:43,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 21:32:43,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 21:32:43,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 21:32:43,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 21:32:43,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 21:32:43,861 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 [2022-12-05 21:32:43,894 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 21:32:43,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 21:32:43,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 21:32:43,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 21:32:43,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 21:32:43,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 21:32:43,897 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 21:32:43,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 21:32:43,897 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 21:32:43,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 21:32:43,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 21:32:43,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 21:32:43,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 21:32:43,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 21:32:43,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 21:32:43,899 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 21:32:43,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 21:32:43,899 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 21:32:43,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 21:32:43,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 21:32:43,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 21:32:43,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 21:32:43,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 21:32:43,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:32:43,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 21:32:43,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 21:32:43,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 21:32:43,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 21:32:43,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 21:32:43,900 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 21:32:43,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 21:32:44,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 21:32:44,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 21:32:44,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 21:32:44,232 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 21:32:44,233 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 21:32:44,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2022-12-05 21:32:45,279 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 21:32:45,447 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 21:32:45,448 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2022-12-05 21:32:45,454 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64adef168/f4db845549ba4d299dd3fc6c06ef12c3/FLAG140a1245f [2022-12-05 21:32:45,464 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64adef168/f4db845549ba4d299dd3fc6c06ef12c3 [2022-12-05 21:32:45,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 21:32:45,468 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 21:32:45,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 21:32:45,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 21:32:45,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 21:32:45,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:32:45" (1/1) ... [2022-12-05 21:32:45,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f76db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:45, skipping insertion in model container [2022-12-05 21:32:45,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:32:45" (1/1) ... [2022-12-05 21:32:45,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 21:32:45,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 21:32:45,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,620 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,620 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,621 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,621 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,622 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,623 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,625 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,626 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,626 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,635 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,635 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,646 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-commit-2.wvr.c[5846,5859] [2022-12-05 21:32:45,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:32:45,660 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 21:32:45,672 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,673 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,673 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,674 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,674 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,675 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,675 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,676 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,680 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,680 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:32:45,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:32:45,692 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-commit-2.wvr.c[5846,5859] [2022-12-05 21:32:45,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:32:45,707 INFO L208 MainTranslator]: Completed translation [2022-12-05 21:32:45,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:45 WrapperNode [2022-12-05 21:32:45,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 21:32:45,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 21:32:45,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 21:32:45,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 21:32:45,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:45" (1/1) ... [2022-12-05 21:32:45,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:45" (1/1) ... [2022-12-05 21:32:45,760 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 456 [2022-12-05 21:32:45,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 21:32:45,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 21:32:45,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 21:32:45,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 21:32:45,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:45" (1/1) ... [2022-12-05 21:32:45,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:45" (1/1) ... [2022-12-05 21:32:45,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:45" (1/1) ... [2022-12-05 21:32:45,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:45" (1/1) ... [2022-12-05 21:32:45,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:45" (1/1) ... [2022-12-05 21:32:45,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:45" (1/1) ... [2022-12-05 21:32:45,823 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:45" (1/1) ... [2022-12-05 21:32:45,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:45" (1/1) ... [2022-12-05 21:32:45,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 21:32:45,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 21:32:45,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 21:32:45,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 21:32:45,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:45" (1/1) ... [2022-12-05 21:32:45,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:32:45,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:32:45,881 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) [2022-12-05 21:32:45,905 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 [2022-12-05 21:32:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 21:32:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 21:32:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 21:32:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 21:32:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 21:32:45,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 21:32:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 21:32:45,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 21:32:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 21:32:45,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 21:32:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-05 21:32:45,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-05 21:32:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 21:32:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 21:32:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 21:32:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 21:32:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 21:32:45,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 21:32:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 21:32:45,926 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 21:32:46,084 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 21:32:46,086 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 21:32:46,564 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 21:32:46,771 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 21:32:46,771 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-05 21:32:46,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:32:46 BoogieIcfgContainer [2022-12-05 21:32:46,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 21:32:46,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 21:32:46,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 21:32:46,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 21:32:46,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:32:45" (1/3) ... [2022-12-05 21:32:46,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8a59bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:32:46, skipping insertion in model container [2022-12-05 21:32:46,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:45" (2/3) ... [2022-12-05 21:32:46,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8a59bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:32:46, skipping insertion in model container [2022-12-05 21:32:46,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:32:46" (3/3) ... [2022-12-05 21:32:46,782 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-12-05 21:32:46,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 21:32:46,798 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 21:32:46,798 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 21:32:46,892 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-05 21:32:46,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 303 transitions, 638 flow [2022-12-05 21:32:47,075 INFO L130 PetriNetUnfolder]: 25/299 cut-off events. [2022-12-05 21:32:47,076 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 21:32:47,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 299 events. 25/299 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 181 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 261. Up to 2 conditions per place. [2022-12-05 21:32:47,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 303 transitions, 638 flow [2022-12-05 21:32:47,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 287 transitions, 598 flow [2022-12-05 21:32:47,096 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 21:32:47,114 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 287 transitions, 598 flow [2022-12-05 21:32:47,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 287 transitions, 598 flow [2022-12-05 21:32:47,162 INFO L130 PetriNetUnfolder]: 25/287 cut-off events. [2022-12-05 21:32:47,163 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 21:32:47,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 287 events. 25/287 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 179 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 261. Up to 2 conditions per place. [2022-12-05 21:32:47,169 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 287 transitions, 598 flow [2022-12-05 21:32:47,170 INFO L188 LiptonReduction]: Number of co-enabled transitions 2544 [2022-12-05 21:32:59,878 INFO L203 LiptonReduction]: Total number of compositions: 246 [2022-12-05 21:32:59,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 21:32:59,896 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;@1bc5c2b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 21:32:59,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-05 21:32:59,904 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2022-12-05 21:32:59,904 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 21:32:59,904 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:32:59,905 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:32:59,905 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 2 more)] === [2022-12-05 21:32:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:32:59,910 INFO L85 PathProgramCache]: Analyzing trace with hash 13481392, now seen corresponding path program 1 times [2022-12-05 21:32:59,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:32:59,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219696013] [2022-12-05 21:32:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:32:59,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:00,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:33:00,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:00,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219696013] [2022-12-05 21:33:00,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219696013] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:33:00,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:33:00,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 21:33:00,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466693914] [2022-12-05 21:33:00,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:33:00,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:33:00,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:33:00,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:33:00,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:33:00,621 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-05 21:33:00,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 106 flow. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2022-12-05 21:33:00,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:33:00,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-05 21:33:00,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:33:01,140 INFO L130 PetriNetUnfolder]: 2346/3110 cut-off events. [2022-12-05 21:33:01,140 INFO L131 PetriNetUnfolder]: For 213/213 co-relation queries the response was YES. [2022-12-05 21:33:01,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6500 conditions, 3110 events. 2346/3110 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11907 event pairs, 381 based on Foata normal form. 1/2317 useless extension candidates. Maximal degree in co-relation 5552. Up to 2810 conditions per place. [2022-12-05 21:33:01,159 INFO L137 encePairwiseOnDemand]: 35/41 looper letters, 58 selfloop transitions, 5 changer transitions 1/64 dead transitions. [2022-12-05 21:33:01,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 301 flow [2022-12-05 21:33:01,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:33:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:33:01,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2022-12-05 21:33:01,170 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5284552845528455 [2022-12-05 21:33:01,172 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 106 flow. Second operand 3 states and 65 transitions. [2022-12-05 21:33:01,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 301 flow [2022-12-05 21:33:01,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 64 transitions, 271 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-05 21:33:01,180 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 123 flow [2022-12-05 21:33:01,182 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2022-12-05 21:33:01,185 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2022-12-05 21:33:01,185 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 123 flow [2022-12-05 21:33:01,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2022-12-05 21:33:01,186 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:33:01,186 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:33:01,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 21:33:01,187 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 2 more)] === [2022-12-05 21:33:01,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:33:01,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1846233153, now seen corresponding path program 1 times [2022-12-05 21:33:01,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:33:01,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676237965] [2022-12-05 21:33:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:01,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:33:01,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:01,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676237965] [2022-12-05 21:33:01,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676237965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:33:01,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:33:01,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:33:01,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045945937] [2022-12-05 21:33:01,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:33:01,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:33:01,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:33:01,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:33:01,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:33:01,393 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-05 21:33:01,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-12-05 21:33:01,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:33:01,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-05 21:33:01,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:33:02,004 INFO L130 PetriNetUnfolder]: 2945/4072 cut-off events. [2022-12-05 21:33:02,005 INFO L131 PetriNetUnfolder]: For 969/969 co-relation queries the response was YES. [2022-12-05 21:33:02,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9618 conditions, 4072 events. 2945/4072 cut-off events. For 969/969 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 16331 event pairs, 2098 based on Foata normal form. 332/4211 useless extension candidates. Maximal degree in co-relation 3795. Up to 3111 conditions per place. [2022-12-05 21:33:02,021 INFO L137 encePairwiseOnDemand]: 29/41 looper letters, 44 selfloop transitions, 2 changer transitions 59/105 dead transitions. [2022-12-05 21:33:02,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 105 transitions, 489 flow [2022-12-05 21:33:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:33:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:33:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2022-12-05 21:33:02,025 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2022-12-05 21:33:02,025 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 123 flow. Second operand 5 states and 105 transitions. [2022-12-05 21:33:02,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 105 transitions, 489 flow [2022-12-05 21:33:02,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 105 transitions, 480 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 21:33:02,029 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 160 flow [2022-12-05 21:33:02,030 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2022-12-05 21:33:02,030 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2022-12-05 21:33:02,032 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 160 flow [2022-12-05 21:33:02,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-12-05 21:33:02,032 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:33:02,032 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:33:02,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 21:33:02,033 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 2 more)] === [2022-12-05 21:33:02,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:33:02,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1944327277, now seen corresponding path program 1 times [2022-12-05 21:33:02,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:33:02,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202739337] [2022-12-05 21:33:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:02,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:33:02,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:02,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202739337] [2022-12-05 21:33:02,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202739337] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:33:02,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:33:02,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:33:02,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762126943] [2022-12-05 21:33:02,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:33:02,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:33:02,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:33:02,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:33:02,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:33:02,252 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-05 21:33:02,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-12-05 21:33:02,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:33:02,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-05 21:33:02,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:33:02,751 INFO L130 PetriNetUnfolder]: 2852/3829 cut-off events. [2022-12-05 21:33:02,751 INFO L131 PetriNetUnfolder]: For 2964/2964 co-relation queries the response was YES. [2022-12-05 21:33:02,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10441 conditions, 3829 events. 2852/3829 cut-off events. For 2964/2964 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14642 event pairs, 765 based on Foata normal form. 140/3968 useless extension candidates. Maximal degree in co-relation 10426. Up to 2698 conditions per place. [2022-12-05 21:33:02,771 INFO L137 encePairwiseOnDemand]: 38/41 looper letters, 68 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2022-12-05 21:33:02,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 70 transitions, 373 flow [2022-12-05 21:33:02,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:33:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:33:02,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2022-12-05 21:33:02,773 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5447154471544715 [2022-12-05 21:33:02,773 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 160 flow. Second operand 3 states and 67 transitions. [2022-12-05 21:33:02,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 70 transitions, 373 flow [2022-12-05 21:33:02,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 359 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-05 21:33:02,780 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 154 flow [2022-12-05 21:33:02,780 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2022-12-05 21:33:02,781 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2022-12-05 21:33:02,781 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 154 flow [2022-12-05 21:33:02,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-12-05 21:33:02,781 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:33:02,782 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:33:02,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 21:33:02,782 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 2 more)] === [2022-12-05 21:33:02,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:33:02,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1221424405, now seen corresponding path program 1 times [2022-12-05 21:33:02,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:33:02,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232737590] [2022-12-05 21:33:02,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:02,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:33:03,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:03,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232737590] [2022-12-05 21:33:03,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232737590] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:33:03,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118601291] [2022-12-05 21:33:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:03,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:33:03,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:33:03,380 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) [2022-12-05 21:33:03,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 21:33:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:03,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-05 21:33:03,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:33:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:33:03,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 21:33:03,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118601291] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:33:03,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 21:33:03,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-05 21:33:03,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396038904] [2022-12-05 21:33:03,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:33:03,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:33:03,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:33:03,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:33:03,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-05 21:33:03,640 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-05 21:33:03,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-12-05 21:33:03,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:33:03,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-05 21:33:03,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:33:04,121 INFO L130 PetriNetUnfolder]: 2676/3627 cut-off events. [2022-12-05 21:33:04,121 INFO L131 PetriNetUnfolder]: For 2936/2936 co-relation queries the response was YES. [2022-12-05 21:33:04,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10118 conditions, 3627 events. 2676/3627 cut-off events. For 2936/2936 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13727 event pairs, 689 based on Foata normal form. 132/3755 useless extension candidates. Maximal degree in co-relation 10097. Up to 2700 conditions per place. [2022-12-05 21:33:04,142 INFO L137 encePairwiseOnDemand]: 38/41 looper letters, 68 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2022-12-05 21:33:04,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 70 transitions, 369 flow [2022-12-05 21:33:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:33:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:33:04,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2022-12-05 21:33:04,146 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5528455284552846 [2022-12-05 21:33:04,146 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 154 flow. Second operand 3 states and 68 transitions. [2022-12-05 21:33:04,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 70 transitions, 369 flow [2022-12-05 21:33:04,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 351 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-05 21:33:04,152 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 150 flow [2022-12-05 21:33:04,152 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2022-12-05 21:33:04,153 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2022-12-05 21:33:04,154 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 150 flow [2022-12-05 21:33:04,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-12-05 21:33:04,154 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:33:04,154 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:33:04,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 21:33:04,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:33:04,361 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 2 more)] === [2022-12-05 21:33:04,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:33:04,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1682009132, now seen corresponding path program 1 times [2022-12-05 21:33:04,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:33:04,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124354582] [2022-12-05 21:33:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:04,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:04,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:33:04,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:04,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124354582] [2022-12-05 21:33:04,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124354582] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:33:04,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:33:04,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:33:04,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561977101] [2022-12-05 21:33:04,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:33:04,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:33:04,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:33:04,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:33:04,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:33:04,530 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-05 21:33:04,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-12-05 21:33:04,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:33:04,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-05 21:33:04,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:33:05,055 INFO L130 PetriNetUnfolder]: 3151/4250 cut-off events. [2022-12-05 21:33:05,055 INFO L131 PetriNetUnfolder]: For 2500/2500 co-relation queries the response was YES. [2022-12-05 21:33:05,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11311 conditions, 4250 events. 3151/4250 cut-off events. For 2500/2500 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 15857 event pairs, 896 based on Foata normal form. 104/4350 useless extension candidates. Maximal degree in co-relation 11289. Up to 2724 conditions per place. [2022-12-05 21:33:05,077 INFO L137 encePairwiseOnDemand]: 38/41 looper letters, 61 selfloop transitions, 2 changer transitions 8/71 dead transitions. [2022-12-05 21:33:05,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 71 transitions, 361 flow [2022-12-05 21:33:05,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:33:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:33:05,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2022-12-05 21:33:05,078 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5772357723577236 [2022-12-05 21:33:05,078 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 150 flow. Second operand 3 states and 71 transitions. [2022-12-05 21:33:05,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 71 transitions, 361 flow [2022-12-05 21:33:05,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 71 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 21:33:05,082 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 156 flow [2022-12-05 21:33:05,082 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2022-12-05 21:33:05,083 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2022-12-05 21:33:05,083 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 156 flow [2022-12-05 21:33:05,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-12-05 21:33:05,083 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:33:05,083 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:33:05,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 21:33:05,083 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 2 more)] === [2022-12-05 21:33:05,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:33:05,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1857733655, now seen corresponding path program 1 times [2022-12-05 21:33:05,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:33:05,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747998615] [2022-12-05 21:33:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:05,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:33:05,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:05,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747998615] [2022-12-05 21:33:05,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747998615] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:33:05,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:33:05,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:33:05,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20960868] [2022-12-05 21:33:05,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:33:05,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:33:05,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:33:05,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:33:05,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:33:05,235 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-05 21:33:05,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2022-12-05 21:33:05,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:33:05,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-05 21:33:05,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:33:06,152 INFO L130 PetriNetUnfolder]: 5282/7294 cut-off events. [2022-12-05 21:33:06,152 INFO L131 PetriNetUnfolder]: For 4496/4496 co-relation queries the response was YES. [2022-12-05 21:33:06,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19435 conditions, 7294 events. 5282/7294 cut-off events. For 4496/4496 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 31385 event pairs, 4147 based on Foata normal form. 160/7445 useless extension candidates. Maximal degree in co-relation 19411. Up to 4248 conditions per place. [2022-12-05 21:33:06,187 INFO L137 encePairwiseOnDemand]: 32/41 looper letters, 43 selfloop transitions, 4 changer transitions 67/114 dead transitions. [2022-12-05 21:33:06,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 114 transitions, 580 flow [2022-12-05 21:33:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:33:06,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:33:06,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2022-12-05 21:33:06,189 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5463414634146342 [2022-12-05 21:33:06,190 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 156 flow. Second operand 5 states and 112 transitions. [2022-12-05 21:33:06,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 114 transitions, 580 flow [2022-12-05 21:33:06,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 114 transitions, 578 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 21:33:06,196 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 184 flow [2022-12-05 21:33:06,196 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2022-12-05 21:33:06,198 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2022-12-05 21:33:06,198 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 184 flow [2022-12-05 21:33:06,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2022-12-05 21:33:06,198 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:33:06,199 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:33:06,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 21:33:06,199 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 2 more)] === [2022-12-05 21:33:06,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:33:06,199 INFO L85 PathProgramCache]: Analyzing trace with hash 121709489, now seen corresponding path program 1 times [2022-12-05 21:33:06,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:33:06,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960869592] [2022-12-05 21:33:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:06,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:33:06,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:06,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960869592] [2022-12-05 21:33:06,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960869592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:33:06,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:33:06,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:33:06,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076404246] [2022-12-05 21:33:06,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:33:06,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:33:06,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:33:06,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:33:06,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:33:06,362 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-05 21:33:06,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2022-12-05 21:33:06,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:33:06,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-05 21:33:06,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:33:07,025 INFO L130 PetriNetUnfolder]: 3650/5069 cut-off events. [2022-12-05 21:33:07,025 INFO L131 PetriNetUnfolder]: For 3519/3519 co-relation queries the response was YES. [2022-12-05 21:33:07,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13658 conditions, 5069 events. 3650/5069 cut-off events. For 3519/3519 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 20588 event pairs, 2853 based on Foata normal form. 76/5144 useless extension candidates. Maximal degree in co-relation 13626. Up to 4246 conditions per place. [2022-12-05 21:33:07,049 INFO L137 encePairwiseOnDemand]: 32/41 looper letters, 42 selfloop transitions, 6 changer transitions 47/95 dead transitions. [2022-12-05 21:33:07,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 95 transitions, 506 flow [2022-12-05 21:33:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:33:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:33:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2022-12-05 21:33:07,050 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45365853658536587 [2022-12-05 21:33:07,050 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 184 flow. Second operand 5 states and 93 transitions. [2022-12-05 21:33:07,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 95 transitions, 506 flow [2022-12-05 21:33:07,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 95 transitions, 478 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-12-05 21:33:07,056 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 198 flow [2022-12-05 21:33:07,056 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2022-12-05 21:33:07,057 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2022-12-05 21:33:07,057 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 198 flow [2022-12-05 21:33:07,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2022-12-05 21:33:07,057 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:33:07,057 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:33:07,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 21:33:07,058 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 2 more)] === [2022-12-05 21:33:07,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:33:07,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1283269723, now seen corresponding path program 1 times [2022-12-05 21:33:07,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:33:07,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415448711] [2022-12-05 21:33:07,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:33:07,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:07,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415448711] [2022-12-05 21:33:07,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415448711] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:33:07,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:33:07,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:33:07,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400914963] [2022-12-05 21:33:07,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:33:07,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:33:07,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:33:07,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:33:07,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:33:07,274 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-05 21:33:07,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-12-05 21:33:07,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:33:07,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-05 21:33:07,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:33:07,955 INFO L130 PetriNetUnfolder]: 3522/4838 cut-off events. [2022-12-05 21:33:07,955 INFO L131 PetriNetUnfolder]: For 3478/3478 co-relation queries the response was YES. [2022-12-05 21:33:07,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13170 conditions, 4838 events. 3522/4838 cut-off events. For 3478/3478 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 18924 event pairs, 2708 based on Foata normal form. 56/4893 useless extension candidates. Maximal degree in co-relation 13135. Up to 4244 conditions per place. [2022-12-05 21:33:07,987 INFO L137 encePairwiseOnDemand]: 31/41 looper letters, 41 selfloop transitions, 8 changer transitions 25/74 dead transitions. [2022-12-05 21:33:07,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 426 flow [2022-12-05 21:33:07,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:33:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:33:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2022-12-05 21:33:07,989 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3463414634146341 [2022-12-05 21:33:07,989 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 198 flow. Second operand 5 states and 71 transitions. [2022-12-05 21:33:07,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 426 flow [2022-12-05 21:33:07,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 398 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-12-05 21:33:07,994 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 208 flow [2022-12-05 21:33:07,994 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2022-12-05 21:33:07,995 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2022-12-05 21:33:07,995 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 208 flow [2022-12-05 21:33:07,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-12-05 21:33:07,995 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:33:07,996 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:33:07,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 21:33:07,996 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 2 more)] === [2022-12-05 21:33:07,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:33:07,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1149586130, now seen corresponding path program 1 times [2022-12-05 21:33:07,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:33:07,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130608939] [2022-12-05 21:33:07,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:07,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 21:33:08,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:08,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130608939] [2022-12-05 21:33:08,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130608939] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:33:08,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:33:08,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 21:33:08,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389203740] [2022-12-05 21:33:08,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:33:08,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:33:08,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:33:08,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:33:08,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:33:08,215 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-05 21:33:08,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 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) [2022-12-05 21:33:08,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:33:08,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-05 21:33:08,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:33:08,520 INFO L130 PetriNetUnfolder]: 1883/2543 cut-off events. [2022-12-05 21:33:08,520 INFO L131 PetriNetUnfolder]: For 1808/1808 co-relation queries the response was YES. [2022-12-05 21:33:08,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6969 conditions, 2543 events. 1883/2543 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8426 event pairs, 709 based on Foata normal form. 30/2572 useless extension candidates. Maximal degree in co-relation 6934. Up to 2325 conditions per place. [2022-12-05 21:33:08,535 INFO L137 encePairwiseOnDemand]: 38/41 looper letters, 51 selfloop transitions, 2 changer transitions 9/62 dead transitions. [2022-12-05 21:33:08,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 364 flow [2022-12-05 21:33:08,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:33:08,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:33:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2022-12-05 21:33:08,536 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2022-12-05 21:33:08,536 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 208 flow. Second operand 3 states and 55 transitions. [2022-12-05 21:33:08,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 364 flow [2022-12-05 21:33:08,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 346 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-05 21:33:08,540 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 204 flow [2022-12-05 21:33:08,541 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2022-12-05 21:33:08,541 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2022-12-05 21:33:08,541 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 204 flow [2022-12-05 21:33:08,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 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) [2022-12-05 21:33:08,541 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:33:08,542 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:33:08,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 21:33:08,542 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 2 more)] === [2022-12-05 21:33:08,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:33:08,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1098970102, now seen corresponding path program 1 times [2022-12-05 21:33:08,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:33:08,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222903256] [2022-12-05 21:33:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:08,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 21:33:08,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:08,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222903256] [2022-12-05 21:33:08,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222903256] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:33:08,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:33:08,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:33:08,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560050945] [2022-12-05 21:33:08,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:33:08,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:33:08,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:33:08,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:33:08,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:33:08,817 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-05 21:33:08,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-12-05 21:33:08,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:33:08,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-05 21:33:08,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:33:09,698 INFO L130 PetriNetUnfolder]: 5057/6765 cut-off events. [2022-12-05 21:33:09,699 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2022-12-05 21:33:09,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19328 conditions, 6765 events. 5057/6765 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 26273 event pairs, 1639 based on Foata normal form. 198/6962 useless extension candidates. Maximal degree in co-relation 19295. Up to 2697 conditions per place. [2022-12-05 21:33:09,730 INFO L137 encePairwiseOnDemand]: 34/41 looper letters, 89 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2022-12-05 21:33:09,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 584 flow [2022-12-05 21:33:09,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:33:09,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:33:09,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2022-12-05 21:33:09,731 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5548780487804879 [2022-12-05 21:33:09,732 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 204 flow. Second operand 4 states and 91 transitions. [2022-12-05 21:33:09,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 584 flow [2022-12-05 21:33:09,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 101 transitions, 580 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-05 21:33:09,736 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 300 flow [2022-12-05 21:33:09,737 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2022-12-05 21:33:09,738 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2022-12-05 21:33:09,738 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 300 flow [2022-12-05 21:33:09,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-12-05 21:33:09,738 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:33:09,738 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:33:09,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 21:33:09,738 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 2 more)] === [2022-12-05 21:33:09,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:33:09,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1608673838, now seen corresponding path program 1 times [2022-12-05 21:33:09,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:33:09,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091334989] [2022-12-05 21:33:09,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:09,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:33:09,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:09,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091334989] [2022-12-05 21:33:09,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091334989] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:33:09,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450811828] [2022-12-05 21:33:09,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:09,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:33:09,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:33:09,992 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) [2022-12-05 21:33:10,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 21:33:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:10,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 21:33:10,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:33:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 21:33:10,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:33:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 21:33:10,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450811828] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:33:10,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:33:10,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-05 21:33:10,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482220601] [2022-12-05 21:33:10,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:33:10,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-05 21:33:10,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:33:10,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-05 21:33:10,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-05 21:33:10,354 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-05 21:33:10,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 300 flow. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 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) [2022-12-05 21:33:10,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:33:10,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-05 21:33:10,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:33:11,245 INFO L130 PetriNetUnfolder]: 5288/7161 cut-off events. [2022-12-05 21:33:11,245 INFO L131 PetriNetUnfolder]: For 10308/10308 co-relation queries the response was YES. [2022-12-05 21:33:11,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23572 conditions, 7161 events. 5288/7161 cut-off events. For 10308/10308 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 28266 event pairs, 3732 based on Foata normal form. 16/7175 useless extension candidates. Maximal degree in co-relation 22533. Up to 6765 conditions per place. [2022-12-05 21:33:11,284 INFO L137 encePairwiseOnDemand]: 35/41 looper letters, 57 selfloop transitions, 3 changer transitions 45/105 dead transitions. [2022-12-05 21:33:11,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 672 flow [2022-12-05 21:33:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 21:33:11,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 21:33:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2022-12-05 21:33:11,285 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.35365853658536583 [2022-12-05 21:33:11,285 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 300 flow. Second operand 6 states and 87 transitions. [2022-12-05 21:33:11,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 672 flow [2022-12-05 21:33:11,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 105 transitions, 646 flow, removed 13 selfloop flow, removed 0 redundant places. [2022-12-05 21:33:11,299 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 300 flow [2022-12-05 21:33:11,299 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2022-12-05 21:33:11,299 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2022-12-05 21:33:11,300 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 300 flow [2022-12-05 21:33:11,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 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) [2022-12-05 21:33:11,300 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:33:11,300 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:33:11,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 21:33:11,506 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,SelfDestructingSolverStorable10 [2022-12-05 21:33:11,506 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 2 more)] === [2022-12-05 21:33:11,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:33:11,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1161466732, now seen corresponding path program 2 times [2022-12-05 21:33:11,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:33:11,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120655176] [2022-12-05 21:33:11,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:11,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:33:11,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:11,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120655176] [2022-12-05 21:33:11,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120655176] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:33:11,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412625682] [2022-12-05 21:33:11,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 21:33:11,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:33:11,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:33:11,856 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) [2022-12-05 21:33:11,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 21:33:12,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:33:12,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:33:12,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-05 21:33:12,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:33:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:33:12,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:33:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:33:12,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412625682] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:33:12,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:33:12,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-05 21:33:12,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404023606] [2022-12-05 21:33:12,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:33:12,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 21:33:12,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:33:12,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 21:33:12,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-12-05 21:33:12,332 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-05 21:33:12,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 300 flow. Second operand has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 17 states have internal predecessors, (70), 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) [2022-12-05 21:33:12,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:33:12,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-05 21:33:12,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:33:13,440 INFO L130 PetriNetUnfolder]: 5372/7294 cut-off events. [2022-12-05 21:33:13,440 INFO L131 PetriNetUnfolder]: For 8565/8565 co-relation queries the response was YES. [2022-12-05 21:33:13,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23035 conditions, 7294 events. 5372/7294 cut-off events. For 8565/8565 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 28968 event pairs, 3742 based on Foata normal form. 28/7320 useless extension candidates. Maximal degree in co-relation 22995. Up to 6765 conditions per place. [2022-12-05 21:33:13,473 INFO L137 encePairwiseOnDemand]: 35/41 looper letters, 57 selfloop transitions, 4 changer transitions 54/115 dead transitions. [2022-12-05 21:33:13,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 115 transitions, 738 flow [2022-12-05 21:33:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 21:33:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 21:33:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2022-12-05 21:33:13,475 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.29573170731707316 [2022-12-05 21:33:13,475 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 300 flow. Second operand 8 states and 97 transitions. [2022-12-05 21:33:13,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 115 transitions, 738 flow [2022-12-05 21:33:13,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 115 transitions, 718 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-12-05 21:33:13,487 INFO L231 Difference]: Finished difference. Result has 78 places, 61 transitions, 320 flow [2022-12-05 21:33:13,487 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=320, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2022-12-05 21:33:13,488 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2022-12-05 21:33:13,489 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 320 flow [2022-12-05 21:33:13,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 17 states have internal predecessors, (70), 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) [2022-12-05 21:33:13,489 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:33:13,489 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:33:13,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 21:33:13,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:33:13,696 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 2 more)] === [2022-12-05 21:33:13,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:33:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash -649067732, now seen corresponding path program 3 times [2022-12-05 21:33:13,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:33:13,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995138237] [2022-12-05 21:33:13,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:13,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-05 21:33:14,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:14,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995138237] [2022-12-05 21:33:14,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995138237] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:33:14,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491605182] [2022-12-05 21:33:14,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 21:33:14,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:33:14,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:33:14,193 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) [2022-12-05 21:33:14,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 21:33:14,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 21:33:14,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:33:14,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-05 21:33:14,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:33:14,478 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-05 21:33:14,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:33:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-05 21:33:14,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491605182] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:33:14,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:33:14,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2022-12-05 21:33:14,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683719146] [2022-12-05 21:33:14,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:33:14,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-05 21:33:14,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:33:14,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-05 21:33:14,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-05 21:33:14,552 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-05 21:33:14,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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) [2022-12-05 21:33:14,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:33:14,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-05 21:33:14,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:33:17,956 INFO L130 PetriNetUnfolder]: 18348/25227 cut-off events. [2022-12-05 21:33:17,956 INFO L131 PetriNetUnfolder]: For 40599/40599 co-relation queries the response was YES. [2022-12-05 21:33:18,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82255 conditions, 25227 events. 18348/25227 cut-off events. For 40599/40599 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 126861 event pairs, 6116 based on Foata normal form. 1976/27199 useless extension candidates. Maximal degree in co-relation 82208. Up to 6441 conditions per place. [2022-12-05 21:33:18,067 INFO L137 encePairwiseOnDemand]: 31/41 looper letters, 139 selfloop transitions, 14 changer transitions 161/314 dead transitions. [2022-12-05 21:33:18,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 314 transitions, 2029 flow [2022-12-05 21:33:18,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-05 21:33:18,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-05 21:33:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 254 transitions. [2022-12-05 21:33:18,069 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.29500580720092917 [2022-12-05 21:33:18,069 INFO L175 Difference]: Start difference. First operand has 78 places, 61 transitions, 320 flow. Second operand 21 states and 254 transitions. [2022-12-05 21:33:18,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 314 transitions, 2029 flow [2022-12-05 21:33:18,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 314 transitions, 1937 flow, removed 43 selfloop flow, removed 6 redundant places. [2022-12-05 21:33:18,120 INFO L231 Difference]: Finished difference. Result has 97 places, 67 transitions, 389 flow [2022-12-05 21:33:18,120 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=389, PETRI_PLACES=97, PETRI_TRANSITIONS=67} [2022-12-05 21:33:18,121 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2022-12-05 21:33:18,121 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 67 transitions, 389 flow [2022-12-05 21:33:18,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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) [2022-12-05 21:33:18,121 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:33:18,121 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:33:18,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 21:33:18,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:33:18,327 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 2 more)] === [2022-12-05 21:33:18,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:33:18,328 INFO L85 PathProgramCache]: Analyzing trace with hash 843110368, now seen corresponding path program 1 times [2022-12-05 21:33:18,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:33:18,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153404040] [2022-12-05 21:33:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:18,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-05 21:33:18,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:18,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153404040] [2022-12-05 21:33:18,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153404040] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:33:18,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487711485] [2022-12-05 21:33:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:18,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:33:18,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:33:18,771 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) [2022-12-05 21:33:18,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 21:33:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:18,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 21:33:18,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:33:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-05 21:33:19,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 21:33:19,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487711485] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:33:19,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 21:33:19,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-05 21:33:19,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553085613] [2022-12-05 21:33:19,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:33:19,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:33:19,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:33:19,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:33:19,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:33:19,020 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 41 [2022-12-05 21:33:19,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 67 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2022-12-05 21:33:19,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:33:19,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 41 [2022-12-05 21:33:19,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:33:24,899 INFO L130 PetriNetUnfolder]: 37552/50260 cut-off events. [2022-12-05 21:33:24,899 INFO L131 PetriNetUnfolder]: For 132829/132829 co-relation queries the response was YES. [2022-12-05 21:33:25,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179983 conditions, 50260 events. 37552/50260 cut-off events. For 132829/132829 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 246271 event pairs, 12349 based on Foata normal form. 1340/51598 useless extension candidates. Maximal degree in co-relation 179922. Up to 17334 conditions per place. [2022-12-05 21:33:25,311 INFO L137 encePairwiseOnDemand]: 38/41 looper letters, 134 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2022-12-05 21:33:25,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 139 transitions, 1051 flow [2022-12-05 21:33:25,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:33:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:33:25,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2022-12-05 21:33:25,312 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5548780487804879 [2022-12-05 21:33:25,312 INFO L175 Difference]: Start difference. First operand has 97 places, 67 transitions, 389 flow. Second operand 4 states and 91 transitions. [2022-12-05 21:33:25,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 139 transitions, 1051 flow [2022-12-05 21:33:25,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 139 transitions, 994 flow, removed 19 selfloop flow, removed 11 redundant places. [2022-12-05 21:33:25,466 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 386 flow [2022-12-05 21:33:25,466 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2022-12-05 21:33:25,467 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2022-12-05 21:33:25,467 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 386 flow [2022-12-05 21:33:25,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2022-12-05 21:33:25,467 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:33:25,467 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:33:25,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-05 21:33:25,668 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,SelfDestructingSolverStorable13 [2022-12-05 21:33:25,668 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 21:33:25,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:33:25,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1445889982, now seen corresponding path program 1 times [2022-12-05 21:33:25,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:33:25,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145341983] [2022-12-05 21:33:25,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:25,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:33:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:33:33,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:33:33,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145341983] [2022-12-05 21:33:33,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145341983] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:33:33,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147218412] [2022-12-05 21:33:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:33:33,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:33:33,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:33:33,336 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) [2022-12-05 21:33:33,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 21:33:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:33:33,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 114 conjunts are in the unsatisfiable core [2022-12-05 21:33:33,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:33:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 21:33:35,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:33:46,373 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 21:34:20,774 WARN L233 SmtUtils]: Spent 34.17s on a formula simplification. DAG size of input: 65 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 21:35:01,168 WARN L233 SmtUtils]: Spent 40.17s on a formula simplification. DAG size of input: 69 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 21:35:41,447 WARN L233 SmtUtils]: Spent 40.13s on a formula simplification that was a NOOP. DAG size: 78 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 21:36:23,846 WARN L233 SmtUtils]: Spent 42.15s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 21:37:54,659 WARN L233 SmtUtils]: Spent 1.51m on a formula simplification. DAG size of input: 97 DAG size of output: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 21:39:25,205 WARN L233 SmtUtils]: Spent 1.44m on a formula simplification that was a NOOP. DAG size: 99 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 21:43:16,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2022-12-05 21:43:16,169 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-12-05 21:43:16,171 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-12-05 21:43:16,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-05 21:43:16,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-05 21:43:16,373 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:350) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 53 more [2022-12-05 21:43:16,376 INFO L158 Benchmark]: Toolchain (without parser) took 630907.75ms. Allocated memory was 182.5MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 148.9MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-12-05 21:43:16,376 INFO L158 Benchmark]: CDTParser took 1.41ms. Allocated memory is still 182.5MB. Free memory is still 160.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 21:43:16,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.42ms. Allocated memory is still 182.5MB. Free memory was 148.9MB in the beginning and 132.7MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-05 21:43:16,376 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.83ms. Allocated memory is still 182.5MB. Free memory was 132.7MB in the beginning and 129.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-05 21:43:16,377 INFO L158 Benchmark]: Boogie Preprocessor took 68.47ms. Allocated memory is still 182.5MB. Free memory was 129.0MB in the beginning and 126.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 21:43:16,377 INFO L158 Benchmark]: RCFGBuilder took 941.83ms. Allocated memory is still 182.5MB. Free memory was 126.4MB in the beginning and 154.4MB in the end (delta: -28.0MB). Peak memory consumption was 75.3MB. Max. memory is 8.0GB. [2022-12-05 21:43:16,377 INFO L158 Benchmark]: TraceAbstraction took 629598.82ms. Allocated memory was 182.5MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 153.9MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-12-05 21:43:16,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.41ms. Allocated memory is still 182.5MB. Free memory is still 160.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 239.42ms. Allocated memory is still 182.5MB. Free memory was 148.9MB in the beginning and 132.7MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.83ms. Allocated memory is still 182.5MB. Free memory was 132.7MB in the beginning and 129.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 68.47ms. Allocated memory is still 182.5MB. Free memory was 129.0MB in the beginning and 126.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 941.83ms. Allocated memory is still 182.5MB. Free memory was 126.4MB in the beginning and 154.4MB in the end (delta: -28.0MB). Peak memory consumption was 75.3MB. Max. memory is 8.0GB. * TraceAbstraction took 629598.82ms. Allocated memory was 182.5MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 153.9MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.7s, 275 PlacesBefore, 46 PlacesAfterwards, 287 TransitionsBefore, 41 TransitionsAfterwards, 2544 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 192 TrivialYvCompositions, 37 ConcurrentYvCompositions, 17 ChoiceCompositions, 246 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1348, independent: 1300, independent conditional: 1300, independent unconditional: 0, dependent: 48, dependent conditional: 48, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1348, independent: 1300, independent conditional: 0, independent unconditional: 1300, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1348, independent: 1300, independent conditional: 0, independent unconditional: 1300, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1348, independent: 1300, independent conditional: 0, independent unconditional: 1300, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1268, independent: 1248, independent conditional: 0, independent unconditional: 1248, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1268, independent: 1236, independent conditional: 0, independent unconditional: 1236, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 32, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 177, independent: 107, independent conditional: 0, independent unconditional: 107, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1348, independent: 52, independent conditional: 0, independent unconditional: 52, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 1268, unknown conditional: 0, unknown unconditional: 1268] , Statistics on independence cache: Total cache size (in pairs): 1891, Positive cache size: 1871, Positive conditional cache size: 0, Positive unconditional cache size: 1871, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...