/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 --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 22:43:32,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 22:43:32,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 22:43:32,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 22:43:32,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 22:43:32,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 22:43:32,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 22:43:32,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 22:43:32,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 22:43:32,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 22:43:32,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 22:43:32,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 22:43:32,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 22:43:32,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 22:43:32,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 22:43:32,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 22:43:32,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 22:43:32,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 22:43:32,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 22:43:32,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 22:43:32,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 22:43:32,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 22:43:32,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 22:43:32,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 22:43:32,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 22:43:32,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 22:43:32,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 22:43:32,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 22:43:32,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 22:43:32,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 22:43:32,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 22:43:32,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 22:43:32,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 22:43:32,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 22:43:32,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 22:43:32,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 22:43:32,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 22:43:32,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 22:43:32,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 22:43:32,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 22:43:32,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 22:43:32,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 22:43:32,129 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 22:43:32,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 22:43:32,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 22:43:32,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 22:43:32,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 22:43:32,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 22:43:32,133 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 22:43:32,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 22:43:32,133 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 22:43:32,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 22:43:32,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 22:43:32,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 22:43:32,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 22:43:32,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 22:43:32,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 22:43:32,145 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 22:43:32,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 22:43:32,147 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 22:43:32,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 22:43:32,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 22:43:32,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 22:43:32,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 22:43:32,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 22:43:32,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:43:32,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 22:43:32,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 22:43:32,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 22:43:32,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 22:43:32,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 22:43:32,149 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 22:43:32,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 22:43:32,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 22:43:32,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 22:43:32,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 22:43:32,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 22:43:32,460 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 22:43:32,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2022-12-12 22:43:33,383 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 22:43:33,585 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 22:43:33,586 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2022-12-12 22:43:33,591 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cb3566f0/14e283ec64074856af72a688c1740e64/FLAGd587e5992 [2022-12-12 22:43:33,607 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cb3566f0/14e283ec64074856af72a688c1740e64 [2022-12-12 22:43:33,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 22:43:33,610 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 22:43:33,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 22:43:33,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 22:43:33,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 22:43:33,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:43:33" (1/1) ... [2022-12-12 22:43:33,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b2a521c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:43:33, skipping insertion in model container [2022-12-12 22:43:33,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:43:33" (1/1) ... [2022-12-12 22:43:33,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 22:43:33,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 22:43:33,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:43:33,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:43:33,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:43:33,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:43:33,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:43:33,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:43:33,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:43:33,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:43:33,780 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-12-12 22:43:33,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:43:33,790 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 22:43:33,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:43:33,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:43:33,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:43:33,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:43:33,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:43:33,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:43:33,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:43:33,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:43:33,819 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-12-12 22:43:33,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:43:33,830 INFO L208 MainTranslator]: Completed translation [2022-12-12 22:43:33,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:43:33 WrapperNode [2022-12-12 22:43:33,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 22:43:33,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 22:43:33,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 22:43:33,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 22:43:33,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:43:33" (1/1) ... [2022-12-12 22:43:33,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:43:33" (1/1) ... [2022-12-12 22:43:33,861 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-12-12 22:43:33,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 22:43:33,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 22:43:33,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 22:43:33,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 22:43:33,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:43:33" (1/1) ... [2022-12-12 22:43:33,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:43:33" (1/1) ... [2022-12-12 22:43:33,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:43:33" (1/1) ... [2022-12-12 22:43:33,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:43:33" (1/1) ... [2022-12-12 22:43:33,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:43:33" (1/1) ... [2022-12-12 22:43:33,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:43:33" (1/1) ... [2022-12-12 22:43:33,876 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:43:33" (1/1) ... [2022-12-12 22:43:33,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:43:33" (1/1) ... [2022-12-12 22:43:33,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 22:43:33,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 22:43:33,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 22:43:33,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 22:43:33,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:43:33" (1/1) ... [2022-12-12 22:43:33,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:43:33,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:43:33,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 22:43:33,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 22:43:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 22:43:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 22:43:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 22:43:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 22:43:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 22:43:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 22:43:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 22:43:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 22:43:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 22:43:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 22:43:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 22:43:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 22:43:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 22:43:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 22:43:33,930 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 22:43:33,993 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 22:43:33,994 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 22:43:34,110 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 22:43:34,130 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 22:43:34,130 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-12 22:43:34,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:43:34 BoogieIcfgContainer [2022-12-12 22:43:34,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 22:43:34,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 22:43:34,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 22:43:34,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 22:43:34,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 10:43:33" (1/3) ... [2022-12-12 22:43:34,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3247d4fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 10:43:34, skipping insertion in model container [2022-12-12 22:43:34,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:43:33" (2/3) ... [2022-12-12 22:43:34,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3247d4fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 10:43:34, skipping insertion in model container [2022-12-12 22:43:34,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:43:34" (3/3) ... [2022-12-12 22:43:34,151 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2022-12-12 22:43:34,183 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 22:43:34,183 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 22:43:34,183 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 22:43:34,256 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 22:43:34,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 196 flow [2022-12-12 22:43:34,346 INFO L130 PetriNetUnfolder]: 11/88 cut-off events. [2022-12-12 22:43:34,346 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 22:43:34,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 11/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2022-12-12 22:43:34,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 90 transitions, 196 flow [2022-12-12 22:43:34,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 80 transitions, 172 flow [2022-12-12 22:43:34,356 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 22:43:34,371 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 80 transitions, 172 flow [2022-12-12 22:43:34,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 80 transitions, 172 flow [2022-12-12 22:43:34,399 INFO L130 PetriNetUnfolder]: 11/80 cut-off events. [2022-12-12 22:43:34,399 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 22:43:34,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 11/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2022-12-12 22:43:34,403 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 80 transitions, 172 flow [2022-12-12 22:43:34,403 INFO L226 LiptonReduction]: Number of co-enabled transitions 1088 [2022-12-12 22:43:36,514 INFO L241 LiptonReduction]: Total number of compositions: 65 [2022-12-12 22:43:36,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 22:43:36,528 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;@70c6e003, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 22:43:36,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 22:43:36,531 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2022-12-12 22:43:36,531 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 22:43:36,531 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:43:36,531 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:43:36,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:43:36,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:43:36,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1161558226, now seen corresponding path program 1 times [2022-12-12 22:43:36,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:43:36,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718650567] [2022-12-12 22:43:36,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:43:36,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:43:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:43:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:36,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:43:36,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718650567] [2022-12-12 22:43:36,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718650567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:43:36,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:43:36,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 22:43:36,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973551234] [2022-12-12 22:43:36,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:43:36,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 22:43:36,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:43:36,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 22:43:36,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 22:43:36,744 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-12 22:43:36,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:43:36,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:43:36,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-12 22:43:36,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:43:36,789 INFO L130 PetriNetUnfolder]: 29/54 cut-off events. [2022-12-12 22:43:36,790 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-12 22:43:36,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 54 events. 29/54 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 1 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 90. Up to 45 conditions per place. [2022-12-12 22:43:36,791 INFO L137 encePairwiseOnDemand]: 10/13 looper letters, 17 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2022-12-12 22:43:36,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 19 transitions, 91 flow [2022-12-12 22:43:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 22:43:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 22:43:36,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2022-12-12 22:43:36,799 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2022-12-12 22:43:36,801 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2022-12-12 22:43:36,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 19 transitions, 91 flow [2022-12-12 22:43:36,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 19 transitions, 91 flow [2022-12-12 22:43:36,803 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 19 transitions, 91 flow [2022-12-12 22:43:36,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:43:36,803 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:43:36,803 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:43:36,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 22:43:36,804 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:43:36,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:43:36,804 INFO L85 PathProgramCache]: Analyzing trace with hash -824867760, now seen corresponding path program 1 times [2022-12-12 22:43:36,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:43:36,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813253023] [2022-12-12 22:43:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:43:36,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:43:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:43:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 22:43:36,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:43:36,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813253023] [2022-12-12 22:43:36,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813253023] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:43:36,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:43:36,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 22:43:36,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317289537] [2022-12-12 22:43:36,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:43:36,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 22:43:36,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:43:36,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 22:43:36,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 22:43:36,902 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-12 22:43:36,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 19 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:43:36,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:43:36,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-12 22:43:36,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:43:36,927 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2022-12-12 22:43:36,927 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-12 22:43:36,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 73 events. 40/73 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 142 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 177. Up to 61 conditions per place. [2022-12-12 22:43:36,928 INFO L137 encePairwiseOnDemand]: 10/13 looper letters, 25 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2022-12-12 22:43:36,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 28 transitions, 186 flow [2022-12-12 22:43:36,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 22:43:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 22:43:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2022-12-12 22:43:36,929 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2022-12-12 22:43:36,929 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 4 predicate places. [2022-12-12 22:43:36,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 28 transitions, 186 flow [2022-12-12 22:43:36,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 28 transitions, 186 flow [2022-12-12 22:43:36,930 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 28 transitions, 186 flow [2022-12-12 22:43:36,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:43:36,930 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:43:36,931 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:43:36,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 22:43:36,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:43:36,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:43:36,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1306217303, now seen corresponding path program 1 times [2022-12-12 22:43:36,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:43:36,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065203332] [2022-12-12 22:43:36,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:43:36,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:43:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:43:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 22:43:37,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:43:37,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065203332] [2022-12-12 22:43:37,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065203332] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:43:37,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648986060] [2022-12-12 22:43:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:43:37,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:37,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:43:37,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:43:37,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 22:43:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:43:37,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 22:43:37,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:43:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:37,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:43:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 22:43:37,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648986060] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:43:37,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:43:37,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 8 [2022-12-12 22:43:37,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300388306] [2022-12-12 22:43:37,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:43:37,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 22:43:37,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:43:37,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 22:43:37,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 22:43:37,637 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-12 22:43:37,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 28 transitions, 186 flow. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 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) [2022-12-12 22:43:37,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:43:37,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-12 22:43:37,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:43:37,757 INFO L130 PetriNetUnfolder]: 65/116 cut-off events. [2022-12-12 22:43:37,757 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-12 22:43:37,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 116 events. 65/116 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 266 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 392. Up to 101 conditions per place. [2022-12-12 22:43:37,758 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 40 selfloop transitions, 18 changer transitions 0/58 dead transitions. [2022-12-12 22:43:37,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 58 transitions, 491 flow [2022-12-12 22:43:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 22:43:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 22:43:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 65 transitions. [2022-12-12 22:43:37,768 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2022-12-12 22:43:37,769 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 16 predicate places. [2022-12-12 22:43:37,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 58 transitions, 491 flow [2022-12-12 22:43:37,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 58 transitions, 491 flow [2022-12-12 22:43:37,771 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 58 transitions, 491 flow [2022-12-12 22:43:37,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 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) [2022-12-12 22:43:37,771 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:43:37,771 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:43:37,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 22:43:37,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:37,978 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:43:37,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:43:37,978 INFO L85 PathProgramCache]: Analyzing trace with hash -817445360, now seen corresponding path program 2 times [2022-12-12 22:43:37,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:43:37,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348694246] [2022-12-12 22:43:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:43:37,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:43:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:43:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:38,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:43:38,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348694246] [2022-12-12 22:43:38,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348694246] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:43:38,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749591239] [2022-12-12 22:43:38,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 22:43:38,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:38,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:43:38,688 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:43:38,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 22:43:38,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 22:43:38,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:43:38,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-12 22:43:38,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:43:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:39,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:43:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:39,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749591239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:43:39,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:43:39,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 17 [2022-12-12 22:43:39,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865700083] [2022-12-12 22:43:39,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:43:39,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 22:43:39,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:43:39,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 22:43:39,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-12-12 22:43:39,414 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-12 22:43:39,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 58 transitions, 491 flow. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:43:39,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:43:39,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-12 22:43:39,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:43:40,085 INFO L130 PetriNetUnfolder]: 192/320 cut-off events. [2022-12-12 22:43:40,085 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-12-12 22:43:40,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1635 conditions, 320 events. 192/320 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1054 event pairs, 0 based on Foata normal form. 1/247 useless extension candidates. Maximal degree in co-relation 1489. Up to 293 conditions per place. [2022-12-12 22:43:40,087 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 87 selfloop transitions, 68 changer transitions 4/159 dead transitions. [2022-12-12 22:43:40,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 159 transitions, 1653 flow [2022-12-12 22:43:40,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-12 22:43:40,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-12 22:43:40,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 106 transitions. [2022-12-12 22:43:40,091 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4076923076923077 [2022-12-12 22:43:40,091 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 35 predicate places. [2022-12-12 22:43:40,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 159 transitions, 1653 flow [2022-12-12 22:43:40,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 155 transitions, 1607 flow [2022-12-12 22:43:40,094 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 155 transitions, 1607 flow [2022-12-12 22:43:40,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:43:40,094 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:43:40,094 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:43:40,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-12 22:43:40,294 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,SelfDestructingSolverStorable3 [2022-12-12 22:43:40,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:43:40,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:43:40,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1848574678, now seen corresponding path program 3 times [2022-12-12 22:43:40,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:43:40,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610057339] [2022-12-12 22:43:40,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:43:40,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:43:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:43:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:40,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:43:40,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610057339] [2022-12-12 22:43:40,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610057339] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:43:40,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427709814] [2022-12-12 22:43:40,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 22:43:40,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:40,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:43:40,736 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:43:40,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 22:43:40,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 22:43:40,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:43:40,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-12 22:43:40,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:43:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:40,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:43:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:41,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427709814] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:43:41,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:43:41,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-12-12 22:43:41,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183243283] [2022-12-12 22:43:41,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:43:41,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-12 22:43:41,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:43:41,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-12 22:43:41,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-12-12 22:43:41,345 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-12 22:43:41,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 155 transitions, 1607 flow. Second operand has 17 states, 16 states have (on average 2.0) internal successors, (32), 16 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) [2022-12-12 22:43:41,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:43:41,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-12 22:43:41,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:43:42,166 INFO L130 PetriNetUnfolder]: 368/607 cut-off events. [2022-12-12 22:43:42,166 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-12 22:43:42,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3690 conditions, 607 events. 368/607 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2418 event pairs, 0 based on Foata normal form. 2/443 useless extension candidates. Maximal degree in co-relation 3498. Up to 580 conditions per place. [2022-12-12 22:43:42,170 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 156 selfloop transitions, 144 changer transitions 26/326 dead transitions. [2022-12-12 22:43:42,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 326 transitions, 4014 flow [2022-12-12 22:43:42,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-12 22:43:42,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-12 22:43:42,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 126 transitions. [2022-12-12 22:43:42,177 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.38769230769230767 [2022-12-12 22:43:42,180 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 58 predicate places. [2022-12-12 22:43:42,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 326 transitions, 4014 flow [2022-12-12 22:43:42,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 300 transitions, 3690 flow [2022-12-12 22:43:42,184 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 300 transitions, 3690 flow [2022-12-12 22:43:42,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 16 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) [2022-12-12 22:43:42,184 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:43:42,184 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:43:42,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-12 22:43:42,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:42,389 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:43:42,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:43:42,389 INFO L85 PathProgramCache]: Analyzing trace with hash 294917994, now seen corresponding path program 4 times [2022-12-12 22:43:42,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:43:42,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140215551] [2022-12-12 22:43:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:43:42,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:43:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:43:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:42,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:43:42,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140215551] [2022-12-12 22:43:42,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140215551] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:43:42,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986902136] [2022-12-12 22:43:42,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 22:43:42,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:42,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:43:42,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:43:42,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 22:43:42,742 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 22:43:42,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:43:42,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-12 22:43:42,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:43:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:42,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:43:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:43,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986902136] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:43:43,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:43:43,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2022-12-12 22:43:43,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830242969] [2022-12-12 22:43:43,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:43:43,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-12 22:43:43,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:43:43,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-12 22:43:43,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-12-12 22:43:43,389 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-12 22:43:43,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 300 transitions, 3690 flow. Second operand has 17 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:43:43,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:43:43,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-12 22:43:43,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:43:44,551 INFO L130 PetriNetUnfolder]: 705/1124 cut-off events. [2022-12-12 22:43:44,552 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-12-12 22:43:44,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7940 conditions, 1124 events. 705/1124 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4949 event pairs, 0 based on Foata normal form. 6/786 useless extension candidates. Maximal degree in co-relation 7674. Up to 1097 conditions per place. [2022-12-12 22:43:44,560 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 284 selfloop transitions, 286 changer transitions 36/606 dead transitions. [2022-12-12 22:43:44,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 606 transitions, 8655 flow [2022-12-12 22:43:44,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-12 22:43:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-12 22:43:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 177 transitions. [2022-12-12 22:43:44,562 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2022-12-12 22:43:44,562 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 86 predicate places. [2022-12-12 22:43:44,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 606 transitions, 8655 flow [2022-12-12 22:43:44,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 570 transitions, 8127 flow [2022-12-12 22:43:44,572 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 570 transitions, 8127 flow [2022-12-12 22:43:44,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:43:44,572 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:43:44,572 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:43:44,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 22:43:44,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:44,777 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:43:44,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:43:44,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1380809458, now seen corresponding path program 5 times [2022-12-12 22:43:44,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:43:44,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895800382] [2022-12-12 22:43:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:43:44,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:43:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:43:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:45,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:43:45,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895800382] [2022-12-12 22:43:45,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895800382] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:43:45,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854073467] [2022-12-12 22:43:45,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 22:43:45,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:45,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:43:45,056 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:43:45,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 22:43:45,102 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 22:43:45,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:43:45,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-12 22:43:45,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:43:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:45,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:43:45,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 22:43:45,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854073467] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:43:45,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:43:45,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2022-12-12 22:43:45,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722587851] [2022-12-12 22:43:45,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:43:45,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 22:43:45,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:43:45,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 22:43:45,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-12 22:43:45,472 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-12 22:43:45,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 570 transitions, 8127 flow. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2022-12-12 22:43:45,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:43:45,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-12 22:43:45,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:43:46,095 INFO L130 PetriNetUnfolder]: 776/1259 cut-off events. [2022-12-12 22:43:46,095 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2022-12-12 22:43:46,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10152 conditions, 1259 events. 776/1259 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5838 event pairs, 0 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 9817. Up to 1232 conditions per place. [2022-12-12 22:43:46,105 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 435 selfloop transitions, 226 changer transitions 40/701 dead transitions. [2022-12-12 22:43:46,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 701 transitions, 11408 flow [2022-12-12 22:43:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-12 22:43:46,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-12 22:43:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 110 transitions. [2022-12-12 22:43:46,107 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36789297658862874 [2022-12-12 22:43:46,107 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 108 predicate places. [2022-12-12 22:43:46,107 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 701 transitions, 11408 flow [2022-12-12 22:43:46,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 661 transitions, 10756 flow [2022-12-12 22:43:46,118 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 661 transitions, 10756 flow [2022-12-12 22:43:46,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2022-12-12 22:43:46,119 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:43:46,119 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:43:46,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 22:43:46,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:46,326 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:43:46,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:43:46,326 INFO L85 PathProgramCache]: Analyzing trace with hash 429213031, now seen corresponding path program 6 times [2022-12-12 22:43:46,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:43:46,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510996037] [2022-12-12 22:43:46,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:43:46,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:43:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:43:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:43:46,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:43:46,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510996037] [2022-12-12 22:43:46,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510996037] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:43:46,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686954765] [2022-12-12 22:43:46,580 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 22:43:46,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:46,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:43:46,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:43:46,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 22:43:46,631 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 22:43:46,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:43:46,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-12 22:43:46,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:43:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 22:43:46,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:43:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 22:43:46,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686954765] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:43:46,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:43:46,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 11 [2022-12-12 22:43:46,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497999094] [2022-12-12 22:43:46,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:43:46,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 22:43:46,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:43:46,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 22:43:46,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-12 22:43:46,932 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-12 22:43:46,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 661 transitions, 10756 flow. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 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) [2022-12-12 22:43:46,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:43:46,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-12 22:43:46,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:43:47,178 INFO L130 PetriNetUnfolder]: 720/1201 cut-off events. [2022-12-12 22:43:47,178 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2022-12-12 22:43:47,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10891 conditions, 1201 events. 720/1201 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5664 event pairs, 0 based on Foata normal form. 4/947 useless extension candidates. Maximal degree in co-relation 10613. Up to 1183 conditions per place. [2022-12-12 22:43:47,186 INFO L137 encePairwiseOnDemand]: 9/13 looper letters, 358 selfloop transitions, 158 changer transitions 161/677 dead transitions. [2022-12-12 22:43:47,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 677 transitions, 12381 flow [2022-12-12 22:43:47,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 22:43:47,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 22:43:47,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 36 transitions. [2022-12-12 22:43:47,187 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3956043956043956 [2022-12-12 22:43:47,187 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 104 predicate places. [2022-12-12 22:43:47,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 677 transitions, 12381 flow [2022-12-12 22:43:47,195 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 516 transitions, 9381 flow [2022-12-12 22:43:47,195 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 516 transitions, 9381 flow [2022-12-12 22:43:47,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 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) [2022-12-12 22:43:47,195 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:43:47,195 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:43:47,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 22:43:47,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:47,404 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:43:47,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:43:47,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1996653006, now seen corresponding path program 7 times [2022-12-12 22:43:47,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:43:47,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454965936] [2022-12-12 22:43:47,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:43:47,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:43:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:43:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 22:43:47,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:43:47,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454965936] [2022-12-12 22:43:47,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454965936] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:43:47,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835048082] [2022-12-12 22:43:47,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 22:43:47,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:47,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:43:47,698 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:43:47,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 22:43:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:43:47,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 22:43:47,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:43:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 22:43:47,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:43:47,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 22:43:47,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835048082] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:43:47,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:43:47,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 13 [2022-12-12 22:43:47,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019675857] [2022-12-12 22:43:47,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:43:47,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 22:43:47,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:43:47,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 22:43:47,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-12 22:43:47,968 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-12 22:43:47,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 516 transitions, 9381 flow. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2022-12-12 22:43:47,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:43:47,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-12 22:43:47,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:43:48,277 INFO L130 PetriNetUnfolder]: 477/772 cut-off events. [2022-12-12 22:43:48,277 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-12 22:43:48,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7751 conditions, 772 events. 477/772 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3069 event pairs, 0 based on Foata normal form. 0/644 useless extension candidates. Maximal degree in co-relation 7507. Up to 754 conditions per place. [2022-12-12 22:43:48,283 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 248 selfloop transitions, 157 changer transitions 50/455 dead transitions. [2022-12-12 22:43:48,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 455 transitions, 9142 flow [2022-12-12 22:43:48,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 22:43:48,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 22:43:48,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 43 transitions. [2022-12-12 22:43:48,284 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3006993006993007 [2022-12-12 22:43:48,285 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 106 predicate places. [2022-12-12 22:43:48,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 455 transitions, 9142 flow [2022-12-12 22:43:48,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 405 transitions, 8142 flow [2022-12-12 22:43:48,291 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 405 transitions, 8142 flow [2022-12-12 22:43:48,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2022-12-12 22:43:48,291 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:43:48,291 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:43:48,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-12 22:43:48,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:48,498 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:43:48,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:43:48,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1624915884, now seen corresponding path program 8 times [2022-12-12 22:43:48,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:43:48,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496868587] [2022-12-12 22:43:48,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:43:48,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:43:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:43:49,035 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:49,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:43:49,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496868587] [2022-12-12 22:43:49,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496868587] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:43:49,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198938012] [2022-12-12 22:43:49,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 22:43:49,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:49,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:43:49,037 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:43:49,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 22:43:49,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 22:43:49,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:43:49,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-12 22:43:49,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:43:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:49,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:43:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:49,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198938012] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:43:49,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:43:49,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-12-12 22:43:49,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861265813] [2022-12-12 22:43:49,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:43:49,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-12 22:43:49,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:43:49,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-12 22:43:49,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2022-12-12 22:43:49,990 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-12 22:43:49,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 405 transitions, 8142 flow. Second operand has 24 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:43:49,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:43:49,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-12 22:43:49,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:43:52,101 INFO L130 PetriNetUnfolder]: 1478/2309 cut-off events. [2022-12-12 22:43:52,101 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-12-12 22:43:52,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25464 conditions, 2309 events. 1478/2309 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11093 event pairs, 0 based on Foata normal form. 8/1849 useless extension candidates. Maximal degree in co-relation 25101. Up to 2291 conditions per place. [2022-12-12 22:43:52,114 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 467 selfloop transitions, 705 changer transitions 172/1344 dead transitions. [2022-12-12 22:43:52,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 1344 transitions, 29709 flow [2022-12-12 22:43:52,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-12 22:43:52,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-12 22:43:52,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 221 transitions. [2022-12-12 22:43:52,116 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2022-12-12 22:43:52,116 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 152 predicate places. [2022-12-12 22:43:52,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 1344 transitions, 29709 flow [2022-12-12 22:43:52,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 1172 transitions, 25865 flow [2022-12-12 22:43:52,137 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 1172 transitions, 25865 flow [2022-12-12 22:43:52,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:43:52,137 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:43:52,137 INFO L214 CegarLoopForPetriNet]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:43:52,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 22:43:52,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-12 22:43:52,342 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:43:52,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:43:52,343 INFO L85 PathProgramCache]: Analyzing trace with hash 102289266, now seen corresponding path program 9 times [2022-12-12 22:43:52,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:43:52,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178798795] [2022-12-12 22:43:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:43:52,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:43:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:43:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 22:43:53,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:43:53,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178798795] [2022-12-12 22:43:53,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178798795] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:43:53,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681593052] [2022-12-12 22:43:53,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 22:43:53,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:53,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:43:53,078 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:43:53,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 22:43:53,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-12 22:43:53,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:43:53,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-12 22:43:53,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:43:53,478 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:43:53,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:43:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:43:54,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681593052] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:43:54,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:43:54,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 22 [2022-12-12 22:43:54,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85591994] [2022-12-12 22:43:54,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:43:54,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-12 22:43:54,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:43:54,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-12 22:43:54,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-12-12 22:43:54,179 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-12 22:43:54,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 1172 transitions, 25865 flow. Second operand has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:43:54,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:43:54,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-12 22:43:54,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:43:54,955 INFO L130 PetriNetUnfolder]: 1289/2008 cut-off events. [2022-12-12 22:43:54,955 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-12-12 22:43:54,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24142 conditions, 2008 events. 1289/2008 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9308 event pairs, 0 based on Foata normal form. 2/1700 useless extension candidates. Maximal degree in co-relation 23876. Up to 1990 conditions per place. [2022-12-12 22:43:54,962 INFO L137 encePairwiseOnDemand]: 7/13 looper letters, 0 selfloop transitions, 0 changer transitions 1170/1170 dead transitions. [2022-12-12 22:43:54,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 1170 transitions, 28161 flow [2022-12-12 22:43:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 22:43:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 22:43:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 46 transitions. [2022-12-12 22:43:54,963 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2948717948717949 [2022-12-12 22:43:54,963 INFO L295 CegarLoopForPetriNet]: 18 programPoint places, 150 predicate places. [2022-12-12 22:43:54,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 1170 transitions, 28161 flow [2022-12-12 22:43:54,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 22:43:54,967 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 22:43:54,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:43:54,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 22:43:54,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 22:43:54,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 22:43:54,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-12 22:43:55,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:43:55,176 INFO L445 BasicCegarLoop]: Path program histogram: [9, 1, 1] [2022-12-12 22:43:55,178 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 22:43:55,178 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 22:43:55,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 10:43:55 BasicIcfg [2022-12-12 22:43:55,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 22:43:55,180 INFO L158 Benchmark]: Toolchain (without parser) took 21570.73ms. Allocated memory was 176.2MB in the beginning and 531.6MB in the end (delta: 355.5MB). Free memory was 152.7MB in the beginning and 315.9MB in the end (delta: -163.2MB). Peak memory consumption was 193.4MB. Max. memory is 8.0GB. [2022-12-12 22:43:55,181 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 154.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 22:43:55,181 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.84ms. Allocated memory is still 176.2MB. Free memory was 152.6MB in the beginning and 140.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 22:43:55,181 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.64ms. Allocated memory is still 176.2MB. Free memory was 140.6MB in the beginning and 139.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 22:43:55,181 INFO L158 Benchmark]: Boogie Preprocessor took 16.28ms. Allocated memory is still 176.2MB. Free memory was 139.0MB in the beginning and 137.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 22:43:55,181 INFO L158 Benchmark]: RCFGBuilder took 267.01ms. Allocated memory is still 176.2MB. Free memory was 137.4MB in the beginning and 123.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 22:43:55,181 INFO L158 Benchmark]: TraceAbstraction took 21033.29ms. Allocated memory was 176.2MB in the beginning and 531.6MB in the end (delta: 355.5MB). Free memory was 122.7MB in the beginning and 315.9MB in the end (delta: -193.1MB). Peak memory consumption was 163.0MB. Max. memory is 8.0GB. [2022-12-12 22:43:55,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 154.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 216.84ms. Allocated memory is still 176.2MB. Free memory was 152.6MB in the beginning and 140.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.64ms. Allocated memory is still 176.2MB. Free memory was 140.6MB in the beginning and 139.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.28ms. Allocated memory is still 176.2MB. Free memory was 139.0MB in the beginning and 137.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 267.01ms. Allocated memory is still 176.2MB. Free memory was 137.4MB in the beginning and 123.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 21033.29ms. Allocated memory was 176.2MB in the beginning and 531.6MB in the end (delta: 355.5MB). Free memory was 122.7MB in the beginning and 315.9MB in the end (delta: -193.1MB). Peak memory consumption was 163.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 76 PlacesBefore, 18 PlacesAfterwards, 80 TransitionsBefore, 13 TransitionsAfterwards, 1088 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 29 ConcurrentYvCompositions, 7 ChoiceCompositions, 65 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 592, independent: 592, independent conditional: 592, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 592, independent: 592, independent conditional: 0, independent unconditional: 592, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 592, independent: 592, independent conditional: 0, independent unconditional: 592, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 592, independent: 592, independent conditional: 0, independent unconditional: 592, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 499, independent: 499, independent conditional: 0, independent unconditional: 499, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 499, independent: 497, independent conditional: 0, independent unconditional: 497, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 592, independent: 93, independent conditional: 0, independent unconditional: 93, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 499, unknown conditional: 0, unknown unconditional: 499] , Statistics on independence cache: Total cache size (in pairs): 901, Positive cache size: 901, Positive conditional cache size: 0, Positive unconditional cache size: 901, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 101]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 108 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.1s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.9s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1092 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1092 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 481 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2743 IncrementalHoareTripleChecker+Invalid, 3224 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 481 mSolverCounterUnsat, 0 mSDtfsCounter, 2743 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 447 GetRequests, 169 SyntacticMatches, 20 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25865occurred in iteration=10, InterpolantAutomatonStates: 198, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 37555 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 305 NumberOfCodeBlocks, 305 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 417 ConstructedInterpolants, 0 QuantifiedInterpolants, 5800 SizeOfPredicates, 72 NumberOfNonLiveVariables, 1074 ConjunctsInSsa, 168 ConjunctsInUnsatCore, 29 InterpolantComputations, 2 PerfectInterpolantSequences, 26/244 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 22:43:55,196 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 0 Received shutdown request...