/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-NoLbe.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/popl20-counter-fun.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 00:47:03,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 00:47:03,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 00:47:04,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 00:47:04,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 00:47:04,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 00:47:04,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 00:47:04,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 00:47:04,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 00:47:04,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 00:47:04,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 00:47:04,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 00:47:04,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 00:47:04,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 00:47:04,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 00:47:04,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 00:47:04,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 00:47:04,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 00:47:04,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 00:47:04,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 00:47:04,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 00:47:04,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 00:47:04,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 00:47:04,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 00:47:04,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 00:47:04,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 00:47:04,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 00:47:04,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 00:47:04,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 00:47:04,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 00:47:04,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 00:47:04,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 00:47:04,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 00:47:04,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 00:47:04,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 00:47:04,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 00:47:04,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 00:47:04,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 00:47:04,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 00:47:04,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 00:47:04,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 00:47:04,093 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-NoLbe.epf [2022-12-12 00:47:04,128 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 00:47:04,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 00:47:04,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 00:47:04,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 00:47:04,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 00:47:04,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 00:47:04,132 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 00:47:04,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 00:47:04,132 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 00:47:04,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 00:47:04,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 00:47:04,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 00:47:04,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 00:47:04,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 00:47:04,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 00:47:04,134 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 00:47:04,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 00:47:04,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 00:47:04,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 00:47:04,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 00:47:04,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 00:47:04,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 00:47:04,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 00:47:04,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 00:47:04,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 00:47:04,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 00:47:04,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 00:47:04,135 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 00:47:04,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 00:47:04,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 00:47:04,136 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 00:47:04,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 00:47:04,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 00:47:04,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 00:47:04,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 00:47:04,462 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 00:47:04,463 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 00:47:04,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c [2022-12-12 00:47:05,506 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 00:47:05,727 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 00:47:05,727 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c [2022-12-12 00:47:05,735 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c21d9954/5af8a77568504796b19bf62def431452/FLAGd916c17aa [2022-12-12 00:47:05,756 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c21d9954/5af8a77568504796b19bf62def431452 [2022-12-12 00:47:05,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 00:47:05,760 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 00:47:05,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 00:47:05,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 00:47:05,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 00:47:05,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:47:05" (1/1) ... [2022-12-12 00:47:05,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2487b1a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:47:05, skipping insertion in model container [2022-12-12 00:47:05,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:47:05" (1/1) ... [2022-12-12 00:47:05,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 00:47:05,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 00:47:05,954 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:47:05,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:47:05,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:47:05,967 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:47:05,981 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c[2681,2694] [2022-12-12 00:47:05,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 00:47:06,004 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 00:47:06,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:47:06,025 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:47:06,026 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 00:47:06,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 00:47:06,043 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c[2681,2694] [2022-12-12 00:47:06,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 00:47:06,062 INFO L208 MainTranslator]: Completed translation [2022-12-12 00:47:06,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:47:06 WrapperNode [2022-12-12 00:47:06,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 00:47:06,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 00:47:06,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 00:47:06,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 00:47:06,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:47:06" (1/1) ... [2022-12-12 00:47:06,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:47:06" (1/1) ... [2022-12-12 00:47:06,126 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 13, calls inlined = 15, statements flattened = 193 [2022-12-12 00:47:06,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 00:47:06,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 00:47:06,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 00:47:06,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 00:47:06,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:47:06" (1/1) ... [2022-12-12 00:47:06,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:47:06" (1/1) ... [2022-12-12 00:47:06,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:47:06" (1/1) ... [2022-12-12 00:47:06,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:47:06" (1/1) ... [2022-12-12 00:47:06,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:47:06" (1/1) ... [2022-12-12 00:47:06,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:47:06" (1/1) ... [2022-12-12 00:47:06,163 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:47:06" (1/1) ... [2022-12-12 00:47:06,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:47:06" (1/1) ... [2022-12-12 00:47:06,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 00:47:06,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 00:47:06,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 00:47:06,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 00:47:06,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:47:06" (1/1) ... [2022-12-12 00:47:06,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 00:47:06,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:47:06,200 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 00:47:06,217 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 00:47:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 00:47:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 00:47:06,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 00:47:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 00:47:06,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 00:47:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 00:47:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 00:47:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 00:47:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 00:47:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 00:47:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 00:47:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 00:47:06,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 00:47:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 00:47:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 00:47:06,232 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 00:47:06,314 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 00:47:06,316 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 00:47:06,702 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 00:47:06,912 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 00:47:06,912 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-12 00:47:06,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:47:06 BoogieIcfgContainer [2022-12-12 00:47:06,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 00:47:06,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 00:47:06,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 00:47:06,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 00:47:06,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:47:05" (1/3) ... [2022-12-12 00:47:06,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513d9e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:47:06, skipping insertion in model container [2022-12-12 00:47:06,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:47:06" (2/3) ... [2022-12-12 00:47:06,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513d9e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:47:06, skipping insertion in model container [2022-12-12 00:47:06,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:47:06" (3/3) ... [2022-12-12 00:47:06,923 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2022-12-12 00:47:06,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 00:47:06,938 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 00:47:06,938 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 00:47:06,993 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 00:47:07,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 150 transitions, 316 flow [2022-12-12 00:47:07,094 INFO L130 PetriNetUnfolder]: 13/148 cut-off events. [2022-12-12 00:47:07,095 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 00:47:07,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 13/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 84 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2022-12-12 00:47:07,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 150 transitions, 316 flow [2022-12-12 00:47:07,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 140 transitions, 292 flow [2022-12-12 00:47:07,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 00:47:07,120 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;@3809815f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 00:47:07,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 00:47:07,210 INFO L130 PetriNetUnfolder]: 13/139 cut-off events. [2022-12-12 00:47:07,210 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 00:47:07,210 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:07,211 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:07,211 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 00:47:07,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:07,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2048843555, now seen corresponding path program 1 times [2022-12-12 00:47:07,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:07,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030492790] [2022-12-12 00:47:07,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:07,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:07,957 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 00:47:07,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:07,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030492790] [2022-12-12 00:47:07,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030492790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:47:07,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:47:07,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 00:47:07,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187426046] [2022-12-12 00:47:07,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:47:07,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 00:47:07,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:08,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 00:47:08,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 00:47:08,006 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 150 [2022-12-12 00:47:08,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 140 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 00:47:08,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:08,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 150 [2022-12-12 00:47:08,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:08,181 INFO L130 PetriNetUnfolder]: 14/175 cut-off events. [2022-12-12 00:47:08,181 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-12-12 00:47:08,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 175 events. 14/175 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 236 event pairs, 0 based on Foata normal form. 20/182 useless extension candidates. Maximal degree in co-relation 137. Up to 23 conditions per place. [2022-12-12 00:47:08,187 INFO L137 encePairwiseOnDemand]: 130/150 looper letters, 28 selfloop transitions, 3 changer transitions 10/140 dead transitions. [2022-12-12 00:47:08,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 140 transitions, 383 flow [2022-12-12 00:47:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 00:47:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 00:47:08,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 810 transitions. [2022-12-12 00:47:08,206 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2022-12-12 00:47:08,209 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 6 predicate places. [2022-12-12 00:47:08,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 140 transitions, 383 flow [2022-12-12 00:47:08,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 130 transitions, 340 flow [2022-12-12 00:47:08,213 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 130 transitions, 340 flow [2022-12-12 00:47:08,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 00:47:08,213 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:08,214 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:08,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 00:47:08,214 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 00:47:08,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:08,215 INFO L85 PathProgramCache]: Analyzing trace with hash 2079681271, now seen corresponding path program 1 times [2022-12-12 00:47:08,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:08,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524230385] [2022-12-12 00:47:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:08,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:08,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:47:08,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:08,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524230385] [2022-12-12 00:47:08,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524230385] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:47:08,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277788867] [2022-12-12 00:47:08,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:08,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:08,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:47:08,427 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 00:47:08,455 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 00:47:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:08,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 00:47:08,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:47:08,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 00:47:08,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 00:47:08,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277788867] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:47:08,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 00:47:08,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-12-12 00:47:08,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153673852] [2022-12-12 00:47:08,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:47:08,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 00:47:08,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:08,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 00:47:08,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-12 00:47:08,983 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 150 [2022-12-12 00:47:08,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 130 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 109.57142857142857) internal successors, (767), 7 states have internal predecessors, (767), 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 00:47:08,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:08,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 150 [2022-12-12 00:47:08,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:09,165 INFO L130 PetriNetUnfolder]: 15/239 cut-off events. [2022-12-12 00:47:09,165 INFO L131 PetriNetUnfolder]: For 70/83 co-relation queries the response was YES. [2022-12-12 00:47:09,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 239 events. 15/239 cut-off events. For 70/83 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 458 event pairs, 0 based on Foata normal form. 4/228 useless extension candidates. Maximal degree in co-relation 242. Up to 36 conditions per place. [2022-12-12 00:47:09,169 INFO L137 encePairwiseOnDemand]: 138/150 looper letters, 33 selfloop transitions, 9 changer transitions 16/150 dead transitions. [2022-12-12 00:47:09,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 150 transitions, 515 flow [2022-12-12 00:47:09,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 00:47:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 00:47:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1116 transitions. [2022-12-12 00:47:09,172 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.744 [2022-12-12 00:47:09,173 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 6 predicate places. [2022-12-12 00:47:09,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 150 transitions, 515 flow [2022-12-12 00:47:09,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 134 transitions, 432 flow [2022-12-12 00:47:09,176 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 134 transitions, 432 flow [2022-12-12 00:47:09,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.57142857142857) internal successors, (767), 7 states have internal predecessors, (767), 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 00:47:09,177 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:09,178 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:09,189 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 00:47:09,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:09,384 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 00:47:09,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:09,385 INFO L85 PathProgramCache]: Analyzing trace with hash -156164123, now seen corresponding path program 1 times [2022-12-12 00:47:09,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:09,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156529158] [2022-12-12 00:47:09,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:09,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:09,507 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 00:47:09,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:09,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156529158] [2022-12-12 00:47:09,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156529158] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:47:09,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119691248] [2022-12-12 00:47:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:09,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:09,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:47:09,510 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 00:47:09,513 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 00:47:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:09,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 00:47:09,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:47:09,702 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 00:47:09,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:47:09,743 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 00:47:09,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119691248] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:47:09,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:47:09,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-12-12 00:47:09,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641762377] [2022-12-12 00:47:09,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:47:09,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 00:47:09,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:09,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 00:47:09,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 00:47:09,751 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 150 [2022-12-12 00:47:09,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 134 transitions, 432 flow. Second operand has 9 states, 9 states have (on average 124.44444444444444) internal successors, (1120), 9 states have internal predecessors, (1120), 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 00:47:09,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:09,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 150 [2022-12-12 00:47:09,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:10,015 INFO L130 PetriNetUnfolder]: 145/465 cut-off events. [2022-12-12 00:47:10,015 INFO L131 PetriNetUnfolder]: For 394/468 co-relation queries the response was YES. [2022-12-12 00:47:10,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 465 events. 145/465 cut-off events. For 394/468 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1930 event pairs, 12 based on Foata normal form. 10/429 useless extension candidates. Maximal degree in co-relation 690. Up to 102 conditions per place. [2022-12-12 00:47:10,021 INFO L137 encePairwiseOnDemand]: 142/150 looper letters, 71 selfloop transitions, 26 changer transitions 0/209 dead transitions. [2022-12-12 00:47:10,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 209 transitions, 914 flow [2022-12-12 00:47:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 00:47:10,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 00:47:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1798 transitions. [2022-12-12 00:47:10,026 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8561904761904762 [2022-12-12 00:47:10,027 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 17 predicate places. [2022-12-12 00:47:10,027 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 209 transitions, 914 flow [2022-12-12 00:47:10,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 209 transitions, 914 flow [2022-12-12 00:47:10,033 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 209 transitions, 914 flow [2022-12-12 00:47:10,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 124.44444444444444) internal successors, (1120), 9 states have internal predecessors, (1120), 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 00:47:10,034 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:10,034 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:10,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 00:47:10,240 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,SelfDestructingSolverStorable2 [2022-12-12 00:47:10,241 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 00:47:10,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:10,241 INFO L85 PathProgramCache]: Analyzing trace with hash -569307921, now seen corresponding path program 2 times [2022-12-12 00:47:10,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:10,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964749455] [2022-12-12 00:47:10,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:10,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:47:10,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:10,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964749455] [2022-12-12 00:47:10,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964749455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:47:10,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:47:10,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 00:47:10,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147353500] [2022-12-12 00:47:10,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:47:10,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 00:47:10,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:10,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 00:47:10,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 00:47:10,345 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 150 [2022-12-12 00:47:10,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 209 transitions, 914 flow. Second operand has 5 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 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 00:47:10,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:10,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 150 [2022-12-12 00:47:10,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:10,497 INFO L130 PetriNetUnfolder]: 172/544 cut-off events. [2022-12-12 00:47:10,497 INFO L131 PetriNetUnfolder]: For 542/609 co-relation queries the response was YES. [2022-12-12 00:47:10,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 544 events. 172/544 cut-off events. For 542/609 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2536 event pairs, 2 based on Foata normal form. 9/502 useless extension candidates. Maximal degree in co-relation 1114. Up to 168 conditions per place. [2022-12-12 00:47:10,501 INFO L137 encePairwiseOnDemand]: 142/150 looper letters, 113 selfloop transitions, 18 changer transitions 7/250 dead transitions. [2022-12-12 00:47:10,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 250 transitions, 1422 flow [2022-12-12 00:47:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 00:47:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 00:47:10,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 792 transitions. [2022-12-12 00:47:10,504 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.88 [2022-12-12 00:47:10,506 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 22 predicate places. [2022-12-12 00:47:10,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 250 transitions, 1422 flow [2022-12-12 00:47:10,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 243 transitions, 1366 flow [2022-12-12 00:47:10,511 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 243 transitions, 1366 flow [2022-12-12 00:47:10,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 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 00:47:10,512 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:10,512 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:10,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 00:47:10,515 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 00:47:10,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:10,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1596192345, now seen corresponding path program 1 times [2022-12-12 00:47:10,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:10,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087535334] [2022-12-12 00:47:10,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:10,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:10,660 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 00:47:10,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:10,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087535334] [2022-12-12 00:47:10,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087535334] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:47:10,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371340982] [2022-12-12 00:47:10,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:10,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:10,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:47:10,662 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 00:47:10,666 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 00:47:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:10,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 00:47:10,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:47:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:47:10,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 00:47:10,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371340982] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:47:10,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 00:47:10,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-12-12 00:47:10,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779413273] [2022-12-12 00:47:10,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:47:10,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 00:47:10,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:10,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 00:47:10,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-12 00:47:10,961 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 150 [2022-12-12 00:47:10,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 243 transitions, 1366 flow. Second operand has 7 states, 7 states have (on average 110.14285714285714) internal successors, (771), 7 states have internal predecessors, (771), 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 00:47:10,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:10,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 150 [2022-12-12 00:47:10,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:11,126 INFO L130 PetriNetUnfolder]: 192/668 cut-off events. [2022-12-12 00:47:11,126 INFO L131 PetriNetUnfolder]: For 1194/1267 co-relation queries the response was YES. [2022-12-12 00:47:11,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 668 events. 192/668 cut-off events. For 1194/1267 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3136 event pairs, 0 based on Foata normal form. 24/622 useless extension candidates. Maximal degree in co-relation 1218. Up to 185 conditions per place. [2022-12-12 00:47:11,131 INFO L137 encePairwiseOnDemand]: 140/150 looper letters, 78 selfloop transitions, 7 changer transitions 8/255 dead transitions. [2022-12-12 00:47:11,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 255 transitions, 1663 flow [2022-12-12 00:47:11,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 00:47:11,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 00:47:11,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 892 transitions. [2022-12-12 00:47:11,134 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7433333333333333 [2022-12-12 00:47:11,134 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 29 predicate places. [2022-12-12 00:47:11,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 255 transitions, 1663 flow [2022-12-12 00:47:11,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 247 transitions, 1552 flow [2022-12-12 00:47:11,138 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 247 transitions, 1552 flow [2022-12-12 00:47:11,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.14285714285714) internal successors, (771), 7 states have internal predecessors, (771), 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 00:47:11,139 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:11,139 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:11,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 00:47:11,354 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 00:47:11,354 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 00:47:11,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:11,355 INFO L85 PathProgramCache]: Analyzing trace with hash 392494361, now seen corresponding path program 1 times [2022-12-12 00:47:11,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:11,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792451744] [2022-12-12 00:47:11,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:11,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:47:11,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:11,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792451744] [2022-12-12 00:47:11,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792451744] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:47:11,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:47:11,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 00:47:11,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963731508] [2022-12-12 00:47:11,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:47:11,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 00:47:11,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:11,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 00:47:11,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 00:47:11,456 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 150 [2022-12-12 00:47:11,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 247 transitions, 1552 flow. Second operand has 5 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 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 00:47:11,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:11,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 150 [2022-12-12 00:47:11,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:11,628 INFO L130 PetriNetUnfolder]: 214/679 cut-off events. [2022-12-12 00:47:11,629 INFO L131 PetriNetUnfolder]: For 1414/1655 co-relation queries the response was YES. [2022-12-12 00:47:11,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2519 conditions, 679 events. 214/679 cut-off events. For 1414/1655 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3344 event pairs, 2 based on Foata normal form. 9/625 useless extension candidates. Maximal degree in co-relation 1836. Up to 229 conditions per place. [2022-12-12 00:47:11,634 INFO L137 encePairwiseOnDemand]: 143/150 looper letters, 168 selfloop transitions, 24 changer transitions 8/316 dead transitions. [2022-12-12 00:47:11,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 316 transitions, 2492 flow [2022-12-12 00:47:11,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 00:47:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 00:47:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 773 transitions. [2022-12-12 00:47:11,637 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8588888888888889 [2022-12-12 00:47:11,640 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 33 predicate places. [2022-12-12 00:47:11,640 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 316 transitions, 2492 flow [2022-12-12 00:47:11,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 308 transitions, 2401 flow [2022-12-12 00:47:11,646 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 308 transitions, 2401 flow [2022-12-12 00:47:11,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 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 00:47:11,646 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:11,647 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:11,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 00:47:11,647 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 00:47:11,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:11,647 INFO L85 PathProgramCache]: Analyzing trace with hash -64835681, now seen corresponding path program 1 times [2022-12-12 00:47:11,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:11,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949816628] [2022-12-12 00:47:11,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:11,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:11,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:47:11,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:11,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949816628] [2022-12-12 00:47:11,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949816628] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:47:11,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499491776] [2022-12-12 00:47:11,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:11,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:11,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:47:11,779 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 00:47:11,799 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 00:47:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:11,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 00:47:11,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:47:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:47:11,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:47:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:47:11,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499491776] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:47:11,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:47:11,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-12-12 00:47:11,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409267595] [2022-12-12 00:47:11,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:47:11,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 00:47:11,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:11,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 00:47:11,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-12 00:47:11,960 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 150 [2022-12-12 00:47:11,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 308 transitions, 2401 flow. Second operand has 11 states, 11 states have (on average 124.72727272727273) internal successors, (1372), 11 states have internal predecessors, (1372), 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 00:47:11,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:11,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 150 [2022-12-12 00:47:11,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:12,181 INFO L130 PetriNetUnfolder]: 208/667 cut-off events. [2022-12-12 00:47:12,181 INFO L131 PetriNetUnfolder]: For 1535/1934 co-relation queries the response was YES. [2022-12-12 00:47:12,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2905 conditions, 667 events. 208/667 cut-off events. For 1535/1934 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3210 event pairs, 4 based on Foata normal form. 15/628 useless extension candidates. Maximal degree in co-relation 2454. Up to 235 conditions per place. [2022-12-12 00:47:12,187 INFO L137 encePairwiseOnDemand]: 142/150 looper letters, 173 selfloop transitions, 45 changer transitions 0/334 dead transitions. [2022-12-12 00:47:12,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 334 transitions, 3072 flow [2022-12-12 00:47:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 00:47:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 00:47:12,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1166 transitions. [2022-12-12 00:47:12,190 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8637037037037038 [2022-12-12 00:47:12,191 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 39 predicate places. [2022-12-12 00:47:12,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 334 transitions, 3072 flow [2022-12-12 00:47:12,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 334 transitions, 3072 flow [2022-12-12 00:47:12,197 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 334 transitions, 3072 flow [2022-12-12 00:47:12,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.72727272727273) internal successors, (1372), 11 states have internal predecessors, (1372), 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 00:47:12,198 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:12,198 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:12,209 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 00:47:12,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:12,405 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 00:47:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash 798586251, now seen corresponding path program 2 times [2022-12-12 00:47:12,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:12,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830329084] [2022-12-12 00:47:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:12,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:47:12,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:12,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830329084] [2022-12-12 00:47:12,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830329084] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:47:12,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509264821] [2022-12-12 00:47:12,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 00:47:12,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:12,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:47:12,504 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 00:47:12,528 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 00:47:12,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 00:47:12,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:47:12,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 00:47:12,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:47:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:47:12,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:47:12,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:47:12,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509264821] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:47:12,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:47:12,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-12-12 00:47:12,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238801770] [2022-12-12 00:47:12,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:47:12,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 00:47:12,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:12,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 00:47:12,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 00:47:12,672 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 150 [2022-12-12 00:47:12,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 334 transitions, 3072 flow. Second operand has 9 states, 9 states have (on average 124.66666666666667) internal successors, (1122), 9 states have internal predecessors, (1122), 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 00:47:12,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:12,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 150 [2022-12-12 00:47:12,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:12,926 INFO L130 PetriNetUnfolder]: 240/748 cut-off events. [2022-12-12 00:47:12,926 INFO L131 PetriNetUnfolder]: For 1814/1988 co-relation queries the response was YES. [2022-12-12 00:47:12,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3803 conditions, 748 events. 240/748 cut-off events. For 1814/1988 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3821 event pairs, 0 based on Foata normal form. 12/702 useless extension candidates. Maximal degree in co-relation 3091. Up to 257 conditions per place. [2022-12-12 00:47:12,934 INFO L137 encePairwiseOnDemand]: 142/150 looper letters, 189 selfloop transitions, 98 changer transitions 1/404 dead transitions. [2022-12-12 00:47:12,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 404 transitions, 4480 flow [2022-12-12 00:47:12,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 00:47:12,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 00:47:12,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1795 transitions. [2022-12-12 00:47:12,938 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8547619047619047 [2022-12-12 00:47:12,939 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 52 predicate places. [2022-12-12 00:47:12,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 404 transitions, 4480 flow [2022-12-12 00:47:12,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 403 transitions, 4468 flow [2022-12-12 00:47:12,947 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 403 transitions, 4468 flow [2022-12-12 00:47:12,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 124.66666666666667) internal successors, (1122), 9 states have internal predecessors, (1122), 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 00:47:12,948 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:12,948 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:12,954 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 00:47:13,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:13,154 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 00:47:13,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:13,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1837739909, now seen corresponding path program 2 times [2022-12-12 00:47:13,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:13,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685731351] [2022-12-12 00:47:13,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:13,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:47:13,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:13,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685731351] [2022-12-12 00:47:13,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685731351] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:47:13,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:47:13,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 00:47:13,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691218686] [2022-12-12 00:47:13,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:47:13,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 00:47:13,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:13,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 00:47:13,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-12 00:47:13,284 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 150 [2022-12-12 00:47:13,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 403 transitions, 4468 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 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 00:47:13,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:13,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 150 [2022-12-12 00:47:13,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:13,497 INFO L130 PetriNetUnfolder]: 282/849 cut-off events. [2022-12-12 00:47:13,497 INFO L131 PetriNetUnfolder]: For 2596/2752 co-relation queries the response was YES. [2022-12-12 00:47:13,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4979 conditions, 849 events. 282/849 cut-off events. For 2596/2752 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4615 event pairs, 0 based on Foata normal form. 5/791 useless extension candidates. Maximal degree in co-relation 4481. Up to 328 conditions per place. [2022-12-12 00:47:13,506 INFO L137 encePairwiseOnDemand]: 143/150 looper letters, 288 selfloop transitions, 38 changer transitions 0/442 dead transitions. [2022-12-12 00:47:13,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 442 transitions, 5669 flow [2022-12-12 00:47:13,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 00:47:13,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 00:47:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 788 transitions. [2022-12-12 00:47:13,508 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8755555555555555 [2022-12-12 00:47:13,509 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 57 predicate places. [2022-12-12 00:47:13,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 442 transitions, 5669 flow [2022-12-12 00:47:13,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 442 transitions, 5669 flow [2022-12-12 00:47:13,520 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 442 transitions, 5669 flow [2022-12-12 00:47:13,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 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 00:47:13,520 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:13,520 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:13,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 00:47:13,521 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 00:47:13,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:13,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1529426617, now seen corresponding path program 3 times [2022-12-12 00:47:13,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:13,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769479601] [2022-12-12 00:47:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:13,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:13,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:47:13,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:13,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769479601] [2022-12-12 00:47:13,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769479601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:47:13,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:47:13,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 00:47:13,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211142669] [2022-12-12 00:47:13,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:47:13,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 00:47:13,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:13,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 00:47:13,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-12 00:47:13,630 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 150 [2022-12-12 00:47:13,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 442 transitions, 5669 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 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 00:47:13,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:13,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 150 [2022-12-12 00:47:13,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:13,829 INFO L130 PetriNetUnfolder]: 270/817 cut-off events. [2022-12-12 00:47:13,829 INFO L131 PetriNetUnfolder]: For 3095/3297 co-relation queries the response was YES. [2022-12-12 00:47:13,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 817 events. 270/817 cut-off events. For 3095/3297 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4381 event pairs, 0 based on Foata normal form. 6/772 useless extension candidates. Maximal degree in co-relation 4870. Up to 318 conditions per place. [2022-12-12 00:47:13,840 INFO L137 encePairwiseOnDemand]: 142/150 looper letters, 268 selfloop transitions, 47 changer transitions 0/431 dead transitions. [2022-12-12 00:47:13,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 431 transitions, 6133 flow [2022-12-12 00:47:13,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 00:47:13,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 00:47:13,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 787 transitions. [2022-12-12 00:47:13,843 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8744444444444445 [2022-12-12 00:47:13,843 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 62 predicate places. [2022-12-12 00:47:13,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 431 transitions, 6133 flow [2022-12-12 00:47:13,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 431 transitions, 6133 flow [2022-12-12 00:47:13,861 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 431 transitions, 6133 flow [2022-12-12 00:47:13,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 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 00:47:13,863 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:13,863 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:13,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 00:47:13,863 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 00:47:13,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:13,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1553998471, now seen corresponding path program 4 times [2022-12-12 00:47:13,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:13,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720879000] [2022-12-12 00:47:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:13,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:47:13,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:13,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720879000] [2022-12-12 00:47:13,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720879000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:47:13,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:47:13,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 00:47:13,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263079072] [2022-12-12 00:47:13,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:47:13,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 00:47:13,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:13,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 00:47:13,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 00:47:13,967 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 150 [2022-12-12 00:47:13,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 431 transitions, 6133 flow. Second operand has 5 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 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 00:47:13,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:13,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 150 [2022-12-12 00:47:13,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:14,151 INFO L130 PetriNetUnfolder]: 264/794 cut-off events. [2022-12-12 00:47:14,151 INFO L131 PetriNetUnfolder]: For 3357/3619 co-relation queries the response was YES. [2022-12-12 00:47:14,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5720 conditions, 794 events. 264/794 cut-off events. For 3357/3619 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4143 event pairs, 1 based on Foata normal form. 5/749 useless extension candidates. Maximal degree in co-relation 4800. Up to 310 conditions per place. [2022-12-12 00:47:14,159 INFO L137 encePairwiseOnDemand]: 142/150 looper letters, 264 selfloop transitions, 31 changer transitions 3/414 dead transitions. [2022-12-12 00:47:14,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 414 transitions, 6403 flow [2022-12-12 00:47:14,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 00:47:14,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 00:47:14,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 652 transitions. [2022-12-12 00:47:14,161 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8693333333333333 [2022-12-12 00:47:14,162 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 66 predicate places. [2022-12-12 00:47:14,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 414 transitions, 6403 flow [2022-12-12 00:47:14,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 411 transitions, 6340 flow [2022-12-12 00:47:14,188 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 411 transitions, 6340 flow [2022-12-12 00:47:14,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 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 00:47:14,188 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:14,189 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:14,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 00:47:14,189 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:47:14,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:14,189 INFO L85 PathProgramCache]: Analyzing trace with hash 389976833, now seen corresponding path program 3 times [2022-12-12 00:47:14,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:14,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609279975] [2022-12-12 00:47:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:14,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:47:14,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:14,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609279975] [2022-12-12 00:47:14,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609279975] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 00:47:14,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 00:47:14,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 00:47:14,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599917577] [2022-12-12 00:47:14,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 00:47:14,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 00:47:14,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:14,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 00:47:14,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-12 00:47:14,311 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 150 [2022-12-12 00:47:14,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 411 transitions, 6340 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 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 00:47:14,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:14,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 150 [2022-12-12 00:47:14,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:14,537 INFO L130 PetriNetUnfolder]: 284/819 cut-off events. [2022-12-12 00:47:14,537 INFO L131 PetriNetUnfolder]: For 3798/4140 co-relation queries the response was YES. [2022-12-12 00:47:14,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6617 conditions, 819 events. 284/819 cut-off events. For 3798/4140 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4299 event pairs, 1 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 5810. Up to 320 conditions per place. [2022-12-12 00:47:14,546 INFO L137 encePairwiseOnDemand]: 143/150 looper letters, 270 selfloop transitions, 41 changer transitions 0/427 dead transitions. [2022-12-12 00:47:14,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 427 transitions, 7256 flow [2022-12-12 00:47:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 00:47:14,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 00:47:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 784 transitions. [2022-12-12 00:47:14,548 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8711111111111111 [2022-12-12 00:47:14,549 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 68 predicate places. [2022-12-12 00:47:14,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 427 transitions, 7256 flow [2022-12-12 00:47:14,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 427 transitions, 7256 flow [2022-12-12 00:47:14,559 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 427 transitions, 7256 flow [2022-12-12 00:47:14,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 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 00:47:14,559 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:14,559 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:14,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 00:47:14,560 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:47:14,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:14,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1322210791, now seen corresponding path program 1 times [2022-12-12 00:47:14,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:14,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679848053] [2022-12-12 00:47:14,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:14,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:47:15,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:15,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679848053] [2022-12-12 00:47:15,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679848053] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:47:15,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534238153] [2022-12-12 00:47:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:15,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:15,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:47:15,144 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 00:47:15,170 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 00:47:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:15,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-12 00:47:15,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:47:15,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2022-12-12 00:47:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:47:15,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:47:15,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12 [2022-12-12 00:47:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 00:47:15,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534238153] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:47:15,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:47:15,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 20 [2022-12-12 00:47:15,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789474253] [2022-12-12 00:47:15,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:47:15,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 00:47:15,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:15,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 00:47:15,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-12-12 00:47:15,691 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 150 [2022-12-12 00:47:15,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 427 transitions, 7256 flow. Second operand has 20 states, 20 states have (on average 80.5) internal successors, (1610), 20 states have internal predecessors, (1610), 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 00:47:15,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:15,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 150 [2022-12-12 00:47:15,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:17,014 INFO L130 PetriNetUnfolder]: 1855/4599 cut-off events. [2022-12-12 00:47:17,014 INFO L131 PetriNetUnfolder]: For 30402/32341 co-relation queries the response was YES. [2022-12-12 00:47:17,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39186 conditions, 4599 events. 1855/4599 cut-off events. For 30402/32341 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 36875 event pairs, 133 based on Foata normal form. 14/4213 useless extension candidates. Maximal degree in co-relation 19559. Up to 2225 conditions per place. [2022-12-12 00:47:17,088 INFO L137 encePairwiseOnDemand]: 129/150 looper letters, 228 selfloop transitions, 140 changer transitions 25/666 dead transitions. [2022-12-12 00:47:17,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 666 transitions, 13188 flow [2022-12-12 00:47:17,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-12 00:47:17,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-12 00:47:17,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1811 transitions. [2022-12-12 00:47:17,096 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5487878787878788 [2022-12-12 00:47:17,097 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 89 predicate places. [2022-12-12 00:47:17,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 666 transitions, 13188 flow [2022-12-12 00:47:17,141 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 641 transitions, 12597 flow [2022-12-12 00:47:17,141 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 641 transitions, 12597 flow [2022-12-12 00:47:17,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 80.5) internal successors, (1610), 20 states have internal predecessors, (1610), 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 00:47:17,142 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:17,142 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:17,153 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 00:47:17,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:17,349 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:47:17,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:17,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1286113211, now seen corresponding path program 2 times [2022-12-12 00:47:17,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:17,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531794401] [2022-12-12 00:47:17,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:17,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:47:17,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:17,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531794401] [2022-12-12 00:47:17,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531794401] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:47:17,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764110845] [2022-12-12 00:47:17,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 00:47:17,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:17,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:47:17,849 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 00:47:17,875 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 00:47:17,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 00:47:17,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:47:17,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-12 00:47:17,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:47:18,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2022-12-12 00:47:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:47:18,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:47:18,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12 [2022-12-12 00:47:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 00:47:18,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764110845] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:47:18,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:47:18,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 20 [2022-12-12 00:47:18,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278418469] [2022-12-12 00:47:18,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:47:18,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 00:47:18,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:18,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 00:47:18,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-12-12 00:47:18,274 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 150 [2022-12-12 00:47:18,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 641 transitions, 12597 flow. Second operand has 20 states, 20 states have (on average 80.35) internal successors, (1607), 20 states have internal predecessors, (1607), 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 00:47:18,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:18,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 150 [2022-12-12 00:47:18,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:21,099 INFO L130 PetriNetUnfolder]: 4730/11904 cut-off events. [2022-12-12 00:47:21,099 INFO L131 PetriNetUnfolder]: For 74140/77365 co-relation queries the response was YES. [2022-12-12 00:47:21,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102432 conditions, 11904 events. 4730/11904 cut-off events. For 74140/77365 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 115437 event pairs, 245 based on Foata normal form. 24/10922 useless extension candidates. Maximal degree in co-relation 28020. Up to 5488 conditions per place. [2022-12-12 00:47:21,361 INFO L137 encePairwiseOnDemand]: 132/150 looper letters, 444 selfloop transitions, 233 changer transitions 136/1087 dead transitions. [2022-12-12 00:47:21,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 1087 transitions, 25544 flow [2022-12-12 00:47:21,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-12 00:47:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-12 00:47:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1635 transitions. [2022-12-12 00:47:21,364 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.545 [2022-12-12 00:47:21,365 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 104 predicate places. [2022-12-12 00:47:21,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 1087 transitions, 25544 flow [2022-12-12 00:47:21,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 951 transitions, 21899 flow [2022-12-12 00:47:21,476 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 951 transitions, 21899 flow [2022-12-12 00:47:21,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 80.35) internal successors, (1607), 20 states have internal predecessors, (1607), 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 00:47:21,478 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:21,478 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:21,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 00:47:21,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:21,685 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:47:21,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1101931, now seen corresponding path program 3 times [2022-12-12 00:47:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:21,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084433351] [2022-12-12 00:47:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:21,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 00:47:22,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:22,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084433351] [2022-12-12 00:47:22,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084433351] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:47:22,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518193934] [2022-12-12 00:47:22,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 00:47:22,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:22,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:47:22,846 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 00:47:22,849 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 00:47:22,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 00:47:22,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:47:22,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-12 00:47:22,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:47:23,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-12 00:47:23,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-12 00:47:23,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 00:47:23,923 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-12 00:47:23,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 36 [2022-12-12 00:47:23,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2022-12-12 00:47:23,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-12 00:47:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 00:47:24,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:47:24,318 WARN L837 $PredicateComparison]: unable to prove that (forall ((~f~0.offset Int) (v_ArrVal_353 (Array Int Int)) (~f~0.base Int) (v_ArrVal_354 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_353))) (let ((.cse0 (select (select .cse1 ~f~0.base) (+ (* c_~counter~0 4) ~f~0.offset)))) (let ((.cse2 (+ (* .cse0 4) c_~f_inv~0.offset))) (or (not (<= 0 .cse0)) (not (= c_~counter~0 (select (select .cse1 c_~f_inv~0.base) .cse2))) (= (select (select (store .cse1 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_354) c_~f_inv~0.base) .cse2) 0) (not (< .cse0 c_~n_inv~0))))))) is different from false [2022-12-12 00:47:24,421 WARN L837 $PredicateComparison]: unable to prove that (forall ((~f~0.offset Int) (v_ArrVal_353 (Array Int Int)) (~f~0.base Int) (v_ArrVal_354 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_353))) (let ((.cse0 (select (select .cse1 ~f~0.base) (+ (* c_~counter~0 4) ~f~0.offset)))) (let ((.cse2 (+ (* .cse0 4) |c_ULTIMATE.start_main_#t~ret19#1.offset|))) (or (not (<= 0 .cse0)) (not (= c_~counter~0 (select (select .cse1 |c_ULTIMATE.start_main_#t~ret19#1.base|) .cse2))) (not (< .cse0 c_~n_inv~0)) (= (select (select (store .cse1 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_354) |c_ULTIMATE.start_main_#t~ret19#1.base|) .cse2) 0)))))) is different from false [2022-12-12 00:47:24,439 WARN L837 $PredicateComparison]: unable to prove that (forall ((~f~0.offset Int) (v_ArrVal_353 (Array Int Int)) (~f~0.base Int) (v_ArrVal_354 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_353))) (let ((.cse0 (select (select .cse1 ~f~0.base) (+ (* c_~counter~0 4) ~f~0.offset)))) (let ((.cse2 (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| (* .cse0 4)))) (or (not (<= 0 .cse0)) (= (select (select (store .cse1 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_354) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) .cse2) 0) (not (= (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) .cse2) c_~counter~0)) (not (< .cse0 c_~n_inv~0))))))) is different from false [2022-12-12 00:47:24,762 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 00:47:24,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 97 [2022-12-12 00:47:24,787 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 00:47:24,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 368 treesize of output 326 [2022-12-12 00:47:24,813 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 00:47:24,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 302 treesize of output 276 [2022-12-12 00:47:24,852 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 00:47:24,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 106 [2022-12-12 00:47:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 00:47:27,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518193934] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:47:27,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:47:27,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 21] total 51 [2022-12-12 00:47:27,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782376241] [2022-12-12 00:47:27,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:47:27,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-12 00:47:27,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:27,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-12 00:47:27,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2021, Unknown=16, NotChecked=282, Total=2550 [2022-12-12 00:47:27,138 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 150 [2022-12-12 00:47:27,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 951 transitions, 21899 flow. Second operand has 51 states, 51 states have (on average 55.88235294117647) internal successors, (2850), 51 states have internal predecessors, (2850), 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 00:47:27,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:27,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 150 [2022-12-12 00:47:27,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:34,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 00:47:37,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 00:47:39,976 INFO L130 PetriNetUnfolder]: 5065/13181 cut-off events. [2022-12-12 00:47:39,976 INFO L131 PetriNetUnfolder]: For 95281/98185 co-relation queries the response was YES. [2022-12-12 00:47:40,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114591 conditions, 13181 events. 5065/13181 cut-off events. For 95281/98185 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 135231 event pairs, 233 based on Foata normal form. 24/11969 useless extension candidates. Maximal degree in co-relation 37963. Up to 6460 conditions per place. [2022-12-12 00:47:40,097 INFO L137 encePairwiseOnDemand]: 112/150 looper letters, 513 selfloop transitions, 308 changer transitions 170/1244 dead transitions. [2022-12-12 00:47:40,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 1244 transitions, 31477 flow [2022-12-12 00:47:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-12 00:47:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-12 00:47:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2780 transitions. [2022-12-12 00:47:40,104 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.37066666666666664 [2022-12-12 00:47:40,105 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 149 predicate places. [2022-12-12 00:47:40,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 1244 transitions, 31477 flow [2022-12-12 00:47:40,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 276 places, 1074 transitions, 26393 flow [2022-12-12 00:47:40,191 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 1074 transitions, 26393 flow [2022-12-12 00:47:40,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 55.88235294117647) internal successors, (2850), 51 states have internal predecessors, (2850), 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 00:47:40,192 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:40,192 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:40,202 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 00:47:40,398 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,SelfDestructingSolverStorable14 [2022-12-12 00:47:40,399 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:47:40,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:40,399 INFO L85 PathProgramCache]: Analyzing trace with hash 644099329, now seen corresponding path program 4 times [2022-12-12 00:47:40,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:40,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592359468] [2022-12-12 00:47:40,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:40,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:47:40,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:40,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592359468] [2022-12-12 00:47:40,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592359468] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:47:40,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836769480] [2022-12-12 00:47:40,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 00:47:40,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:40,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:47:40,579 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 00:47:40,581 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 00:47:40,688 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 00:47:40,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:47:40,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 00:47:40,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:47:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:47:40,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:47:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:47:40,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836769480] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:47:40,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:47:40,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-12-12 00:47:40,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822458162] [2022-12-12 00:47:40,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:47:40,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 00:47:40,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:40,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 00:47:40,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-12-12 00:47:40,942 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-12-12 00:47:40,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 1074 transitions, 26393 flow. Second operand has 21 states, 21 states have (on average 122.47619047619048) internal successors, (2572), 21 states have internal predecessors, (2572), 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 00:47:40,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:40,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-12-12 00:47:40,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:47,047 INFO L130 PetriNetUnfolder]: 7961/19294 cut-off events. [2022-12-12 00:47:47,047 INFO L131 PetriNetUnfolder]: For 170619/174959 co-relation queries the response was YES. [2022-12-12 00:47:47,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167546 conditions, 19294 events. 7961/19294 cut-off events. For 170619/174959 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 196738 event pairs, 428 based on Foata normal form. 101/17694 useless extension candidates. Maximal degree in co-relation 61696. Up to 9900 conditions per place. [2022-12-12 00:47:47,210 INFO L137 encePairwiseOnDemand]: 138/150 looper letters, 1218 selfloop transitions, 222 changer transitions 58/1738 dead transitions. [2022-12-12 00:47:47,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 1738 transitions, 47520 flow [2022-12-12 00:47:47,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-12 00:47:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-12-12 00:47:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 7210 transitions. [2022-12-12 00:47:47,220 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.828735632183908 [2022-12-12 00:47:47,221 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 199 predicate places. [2022-12-12 00:47:47,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 1738 transitions, 47520 flow [2022-12-12 00:47:47,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 333 places, 1680 transitions, 45374 flow [2022-12-12 00:47:47,340 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 1680 transitions, 45374 flow [2022-12-12 00:47:47,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 122.47619047619048) internal successors, (2572), 21 states have internal predecessors, (2572), 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 00:47:47,341 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:47,342 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:47,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 00:47:47,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-12 00:47:47,550 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:47:47,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:47,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1408404855, now seen corresponding path program 5 times [2022-12-12 00:47:47,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:47,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696657854] [2022-12-12 00:47:47,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:47,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:47:47,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:47,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696657854] [2022-12-12 00:47:47,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696657854] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:47:47,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887270276] [2022-12-12 00:47:47,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 00:47:47,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:47,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:47:47,742 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:47:47,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 00:47:47,873 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 00:47:47,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:47:47,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 00:47:47,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:47:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:47:48,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:47:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:47:48,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887270276] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:47:48,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:47:48,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-12-12 00:47:48,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468896356] [2022-12-12 00:47:48,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:47:48,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 00:47:48,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:48,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 00:47:48,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-12-12 00:47:48,085 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-12-12 00:47:48,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 1680 transitions, 45374 flow. Second operand has 21 states, 21 states have (on average 122.57142857142857) internal successors, (2574), 21 states have internal predecessors, (2574), 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 00:47:48,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:48,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-12-12 00:47:48,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:47:56,651 INFO L130 PetriNetUnfolder]: 10319/24465 cut-off events. [2022-12-12 00:47:56,651 INFO L131 PetriNetUnfolder]: For 215344/218898 co-relation queries the response was YES. [2022-12-12 00:47:56,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235241 conditions, 24465 events. 10319/24465 cut-off events. For 215344/218898 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 254620 event pairs, 393 based on Foata normal form. 115/22509 useless extension candidates. Maximal degree in co-relation 83997. Up to 13657 conditions per place. [2022-12-12 00:47:56,866 INFO L137 encePairwiseOnDemand]: 138/150 looper letters, 1705 selfloop transitions, 248 changer transitions 0/2193 dead transitions. [2022-12-12 00:47:56,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 2193 transitions, 63389 flow [2022-12-12 00:47:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 00:47:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 00:47:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4164 transitions. [2022-12-12 00:47:56,871 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8412121212121212 [2022-12-12 00:47:56,871 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 231 predicate places. [2022-12-12 00:47:56,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 365 places, 2193 transitions, 63389 flow [2022-12-12 00:47:57,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 365 places, 2193 transitions, 63389 flow [2022-12-12 00:47:57,027 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 2193 transitions, 63389 flow [2022-12-12 00:47:57,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 122.57142857142857) internal successors, (2574), 21 states have internal predecessors, (2574), 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 00:47:57,028 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:47:57,028 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:47:57,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-12 00:47:57,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-12 00:47:57,230 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:47:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:47:57,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1009726813, now seen corresponding path program 6 times [2022-12-12 00:47:57,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:47:57,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476114422] [2022-12-12 00:47:57,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:47:57,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:47:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:47:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:47:57,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:47:57,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476114422] [2022-12-12 00:47:57,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476114422] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:47:57,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624263404] [2022-12-12 00:47:57,397 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 00:47:57,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:47:57,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:47:57,400 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:47:57,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 00:47:57,655 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 00:47:57,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:47:57,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 00:47:57,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:47:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:47:57,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:47:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:47:57,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624263404] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:47:57,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:47:57,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-12-12 00:47:57,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987538182] [2022-12-12 00:47:57,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:47:57,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 00:47:57,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:47:57,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 00:47:57,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-12-12 00:47:57,879 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-12-12 00:47:57,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 2193 transitions, 63389 flow. Second operand has 21 states, 21 states have (on average 122.61904761904762) internal successors, (2575), 21 states have internal predecessors, (2575), 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 00:47:57,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:47:57,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-12-12 00:47:57,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:48:14,647 INFO L130 PetriNetUnfolder]: 15855/37400 cut-off events. [2022-12-12 00:48:14,647 INFO L131 PetriNetUnfolder]: For 333790/338450 co-relation queries the response was YES. [2022-12-12 00:48:14,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392183 conditions, 37400 events. 15855/37400 cut-off events. For 333790/338450 co-relation queries the response was YES. Maximal size of possible extension queue 1277. Compared 409835 event pairs, 425 based on Foata normal form. 145/34325 useless extension candidates. Maximal degree in co-relation 136096. Up to 22444 conditions per place. [2022-12-12 00:48:15,032 INFO L137 encePairwiseOnDemand]: 138/150 looper letters, 2628 selfloop transitions, 558 changer transitions 6/3432 dead transitions. [2022-12-12 00:48:15,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 3432 transitions, 107114 flow [2022-12-12 00:48:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-12 00:48:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-12-12 00:48:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 7282 transitions. [2022-12-12 00:48:15,039 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8370114942528736 [2022-12-12 00:48:15,039 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 288 predicate places. [2022-12-12 00:48:15,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 422 places, 3432 transitions, 107114 flow [2022-12-12 00:48:15,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 422 places, 3426 transitions, 106868 flow [2022-12-12 00:48:15,305 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 3426 transitions, 106868 flow [2022-12-12 00:48:15,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 122.61904761904762) internal successors, (2575), 21 states have internal predecessors, (2575), 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 00:48:15,306 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:48:15,306 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:48:15,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-12 00:48:15,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-12 00:48:15,513 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:48:15,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:48:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1977605657, now seen corresponding path program 7 times [2022-12-12 00:48:15,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:48:15,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486827698] [2022-12-12 00:48:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:48:15,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:48:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:48:15,665 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:48:15,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:48:15,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486827698] [2022-12-12 00:48:15,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486827698] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:48:15,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034484555] [2022-12-12 00:48:15,666 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 00:48:15,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:48:15,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:48:15,668 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:48:15,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-12 00:48:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:48:15,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 00:48:15,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:48:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:48:15,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:48:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 00:48:15,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034484555] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:48:15,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:48:15,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-12-12 00:48:15,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740537930] [2022-12-12 00:48:15,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:48:15,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 00:48:15,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:48:15,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 00:48:15,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-12-12 00:48:15,999 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-12-12 00:48:16,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 3426 transitions, 106868 flow. Second operand has 19 states, 19 states have (on average 122.73684210526316) internal successors, (2332), 19 states have internal predecessors, (2332), 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 00:48:16,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:48:16,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-12-12 00:48:16,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:48:54,892 INFO L130 PetriNetUnfolder]: 25158/57227 cut-off events. [2022-12-12 00:48:54,892 INFO L131 PetriNetUnfolder]: For 514023/519441 co-relation queries the response was YES. [2022-12-12 00:48:55,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661050 conditions, 57227 events. 25158/57227 cut-off events. For 514023/519441 co-relation queries the response was YES. Maximal size of possible extension queue 1885. Compared 651187 event pairs, 465 based on Foata normal form. 159/52475 useless extension candidates. Maximal degree in co-relation 231015. Up to 36884 conditions per place. [2022-12-12 00:48:55,529 INFO L137 encePairwiseOnDemand]: 138/150 looper letters, 4213 selfloop transitions, 989 changer transitions 6/5448 dead transitions. [2022-12-12 00:48:55,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 5448 transitions, 181796 flow [2022-12-12 00:48:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-12 00:48:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-12 00:48:55,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 6399 transitions. [2022-12-12 00:48:55,533 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8364705882352941 [2022-12-12 00:48:55,534 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 338 predicate places. [2022-12-12 00:48:55,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 472 places, 5448 transitions, 181796 flow [2022-12-12 00:48:56,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 472 places, 5442 transitions, 181538 flow [2022-12-12 00:48:56,083 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 5442 transitions, 181538 flow [2022-12-12 00:48:56,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 122.73684210526316) internal successors, (2332), 19 states have internal predecessors, (2332), 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 00:48:56,084 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:48:56,084 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:48:56,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-12 00:48:56,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:48:56,285 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:48:56,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:48:56,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1854309751, now seen corresponding path program 8 times [2022-12-12 00:48:56,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:48:56,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396672149] [2022-12-12 00:48:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:48:56,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:48:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:48:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:48:56,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:48:56,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396672149] [2022-12-12 00:48:56,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396672149] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:48:56,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487573213] [2022-12-12 00:48:56,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 00:48:56,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:48:56,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:48:56,471 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:48:56,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-12 00:48:56,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 00:48:56,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:48:56,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 00:48:56,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:48:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:48:56,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:48:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:48:56,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487573213] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:48:56,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:48:56,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-12-12 00:48:56,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91557755] [2022-12-12 00:48:56,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:48:56,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 00:48:56,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:48:56,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 00:48:56,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-12-12 00:48:56,776 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-12-12 00:48:56,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 5442 transitions, 181538 flow. Second operand has 19 states, 19 states have (on average 122.57894736842105) internal successors, (2329), 19 states have internal predecessors, (2329), 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 00:48:56,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:48:56,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-12-12 00:48:56,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:50:03,120 INFO L130 PetriNetUnfolder]: 25093/59019 cut-off events. [2022-12-12 00:50:03,121 INFO L131 PetriNetUnfolder]: For 527001/533499 co-relation queries the response was YES. [2022-12-12 00:50:03,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719562 conditions, 59019 events. 25093/59019 cut-off events. For 527001/533499 co-relation queries the response was YES. Maximal size of possible extension queue 1991. Compared 691499 event pairs, 464 based on Foata normal form. 171/54288 useless extension candidates. Maximal degree in co-relation 252994. Up to 37401 conditions per place. [2022-12-12 00:50:03,972 INFO L137 encePairwiseOnDemand]: 138/150 looper letters, 4507 selfloop transitions, 762 changer transitions 20/5529 dead transitions. [2022-12-12 00:50:03,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 5529 transitions, 194912 flow [2022-12-12 00:50:03,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 00:50:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 00:50:03,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4772 transitions. [2022-12-12 00:50:03,975 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8371929824561404 [2022-12-12 00:50:03,975 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 375 predicate places. [2022-12-12 00:50:03,975 INFO L82 GeneralOperation]: Start removeDead. Operand has 509 places, 5529 transitions, 194912 flow [2022-12-12 00:50:04,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 509 places, 5509 transitions, 194012 flow [2022-12-12 00:50:04,433 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 5509 transitions, 194012 flow [2022-12-12 00:50:04,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 122.57894736842105) internal successors, (2329), 19 states have internal predecessors, (2329), 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 00:50:04,434 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:50:04,434 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:50:04,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-12 00:50:04,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-12-12 00:50:04,641 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:50:04,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:50:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1892536341, now seen corresponding path program 9 times [2022-12-12 00:50:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:50:04,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318369936] [2022-12-12 00:50:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:50:04,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:50:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:50:04,789 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:50:04,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:50:04,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318369936] [2022-12-12 00:50:04,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318369936] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:50:04,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387726145] [2022-12-12 00:50:04,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 00:50:04,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:50:04,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:50:04,793 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:50:04,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-12 00:50:05,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-12 00:50:05,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:50:05,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 00:50:05,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:50:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:50:05,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:50:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 00:50:05,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387726145] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:50:05,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:50:05,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-12-12 00:50:05,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293440528] [2022-12-12 00:50:05,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:50:05,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 00:50:05,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:50:05,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 00:50:05,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-12-12 00:50:05,382 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-12-12 00:50:05,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 5509 transitions, 194012 flow. Second operand has 19 states, 19 states have (on average 122.78947368421052) internal successors, (2333), 19 states have internal predecessors, (2333), 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 00:50:05,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:50:05,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-12-12 00:50:05,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:51:47,281 INFO L130 PetriNetUnfolder]: 34758/80851 cut-off events. [2022-12-12 00:51:47,282 INFO L131 PetriNetUnfolder]: For 698437/706044 co-relation queries the response was YES. [2022-12-12 00:51:47,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055977 conditions, 80851 events. 34758/80851 cut-off events. For 698437/706044 co-relation queries the response was YES. Maximal size of possible extension queue 2847. Compared 988169 event pairs, 513 based on Foata normal form. 173/74321 useless extension candidates. Maximal degree in co-relation 370835. Up to 52403 conditions per place. [2022-12-12 00:51:48,237 INFO L137 encePairwiseOnDemand]: 138/150 looper letters, 6119 selfloop transitions, 1223 changer transitions 3/7585 dead transitions. [2022-12-12 00:51:48,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 7585 transitions, 282856 flow [2022-12-12 00:51:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 00:51:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 00:51:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4771 transitions. [2022-12-12 00:51:48,241 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8370175438596491 [2022-12-12 00:51:48,242 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 412 predicate places. [2022-12-12 00:51:48,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 7585 transitions, 282856 flow [2022-12-12 00:51:49,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 546 places, 7582 transitions, 282715 flow [2022-12-12 00:51:49,073 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 7582 transitions, 282715 flow [2022-12-12 00:51:49,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 122.78947368421052) internal successors, (2333), 19 states have internal predecessors, (2333), 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 00:51:49,074 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:51:49,074 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:51:49,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-12 00:51:49,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:51:49,280 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:51:49,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:51:49,281 INFO L85 PathProgramCache]: Analyzing trace with hash 343090673, now seen corresponding path program 10 times [2022-12-12 00:51:49,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:51:49,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820872327] [2022-12-12 00:51:49,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:51:49,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:51:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:51:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:51:49,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:51:49,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820872327] [2022-12-12 00:51:49,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820872327] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:51:49,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253455487] [2022-12-12 00:51:49,436 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 00:51:49,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:51:49,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:51:49,437 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:51:49,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-12 00:51:49,568 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 00:51:49,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:51:49,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 00:51:49,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:51:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:51:49,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:51:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:51:49,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253455487] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:51:49,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:51:49,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-12-12 00:51:49,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949267590] [2022-12-12 00:51:49,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:51:49,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 00:51:49,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:51:49,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 00:51:49,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-12-12 00:51:49,761 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-12-12 00:51:49,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 7582 transitions, 282715 flow. Second operand has 19 states, 19 states have (on average 122.52631578947368) internal successors, (2328), 19 states have internal predecessors, (2328), 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 00:51:49,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:51:49,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-12-12 00:51:49,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:55:02,961 INFO L130 PetriNetUnfolder]: 34692/83321 cut-off events. [2022-12-12 00:55:02,961 INFO L131 PetriNetUnfolder]: For 712512/719309 co-relation queries the response was YES. [2022-12-12 00:55:03,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141274 conditions, 83321 events. 34692/83321 cut-off events. For 712512/719309 co-relation queries the response was YES. Maximal size of possible extension queue 3039. Compared 1049261 event pairs, 489 based on Foata normal form. 100/76802 useless extension candidates. Maximal degree in co-relation 403616. Up to 53315 conditions per place. [2022-12-12 00:55:04,050 INFO L137 encePairwiseOnDemand]: 138/150 looper letters, 6082 selfloop transitions, 1375 changer transitions 25/7722 dead transitions. [2022-12-12 00:55:04,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 7722 transitions, 302744 flow [2022-12-12 00:55:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 00:55:04,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 00:55:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 5495 transitions. [2022-12-12 00:55:04,054 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8325757575757575 [2022-12-12 00:55:04,054 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 455 predicate places. [2022-12-12 00:55:04,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 589 places, 7722 transitions, 302744 flow [2022-12-12 00:55:04,816 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 589 places, 7697 transitions, 301519 flow [2022-12-12 00:55:04,816 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 7697 transitions, 301519 flow [2022-12-12 00:55:04,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 122.52631578947368) internal successors, (2328), 19 states have internal predecessors, (2328), 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 00:55:04,817 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:55:04,817 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:55:04,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-12 00:55:05,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:55:05,024 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:55:05,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:55:05,025 INFO L85 PathProgramCache]: Analyzing trace with hash -83421921, now seen corresponding path program 11 times [2022-12-12 00:55:05,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:55:05,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793554387] [2022-12-12 00:55:05,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:55:05,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:55:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:55:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:55:05,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:55:05,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793554387] [2022-12-12 00:55:05,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793554387] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:55:05,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197167628] [2022-12-12 00:55:05,178 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 00:55:05,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:55:05,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:55:05,180 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:55:05,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-12 00:55:05,322 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 00:55:05,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:55:05,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 00:55:05,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:55:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:55:05,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:55:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:55:05,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197167628] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:55:05,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:55:05,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-12-12 00:55:05,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724390540] [2022-12-12 00:55:05,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:55:05,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 00:55:05,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:55:05,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 00:55:05,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-12-12 00:55:05,570 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-12-12 00:55:05,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 7697 transitions, 301519 flow. Second operand has 21 states, 21 states have (on average 122.47619047619048) internal successors, (2572), 21 states have internal predecessors, (2572), 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 00:55:05,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:55:05,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-12-12 00:55:05,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 00:58:28,548 INFO L130 PetriNetUnfolder]: 42105/102918 cut-off events. [2022-12-12 00:58:28,549 INFO L131 PetriNetUnfolder]: For 956614/968747 co-relation queries the response was YES. [2022-12-12 00:58:29,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483134 conditions, 102918 events. 42105/102918 cut-off events. For 956614/968747 co-relation queries the response was YES. Maximal size of possible extension queue 3741. Compared 1348232 event pairs, 600 based on Foata normal form. 247/94569 useless extension candidates. Maximal degree in co-relation 520799. Up to 65725 conditions per place. [2022-12-12 00:58:29,916 INFO L137 encePairwiseOnDemand]: 138/150 looper letters, 6948 selfloop transitions, 2163 changer transitions 67/9418 dead transitions. [2022-12-12 00:58:29,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 9418 transitions, 393038 flow [2022-12-12 00:58:29,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-12 00:58:29,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-12-12 00:58:29,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 8003 transitions. [2022-12-12 00:58:29,930 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8336458333333333 [2022-12-12 00:58:29,930 INFO L295 CegarLoopForPetriNet]: 134 programPoint places, 518 predicate places. [2022-12-12 00:58:29,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 652 places, 9418 transitions, 393038 flow [2022-12-12 00:58:30,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 652 places, 9351 transitions, 389621 flow [2022-12-12 00:58:30,926 INFO L495 AbstractCegarLoop]: Abstraction has has 652 places, 9351 transitions, 389621 flow [2022-12-12 00:58:30,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 122.47619047619048) internal successors, (2572), 21 states have internal predecessors, (2572), 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 00:58:30,927 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 00:58:30,927 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 00:58:30,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-12 00:58:31,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-12 00:58:31,132 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 00:58:31,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 00:58:31,132 INFO L85 PathProgramCache]: Analyzing trace with hash 537188393, now seen corresponding path program 12 times [2022-12-12 00:58:31,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 00:58:31,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540766969] [2022-12-12 00:58:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 00:58:31,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 00:58:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 00:58:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:58:31,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 00:58:31,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540766969] [2022-12-12 00:58:31,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540766969] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 00:58:31,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973273695] [2022-12-12 00:58:31,294 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 00:58:31,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 00:58:31,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 00:58:31,296 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 00:58:31,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-12 00:58:31,450 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 00:58:31,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 00:58:31,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 00:58:31,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 00:58:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:58:31,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 00:58:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-12 00:58:31,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973273695] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 00:58:31,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 00:58:31,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-12-12 00:58:31,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325205226] [2022-12-12 00:58:31,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 00:58:31,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 00:58:31,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 00:58:31,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 00:58:31,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-12-12 00:58:31,663 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-12-12 00:58:31,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 9351 transitions, 389621 flow. Second operand has 21 states, 21 states have (on average 122.47619047619048) internal successors, (2572), 21 states have internal predecessors, (2572), 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 00:58:31,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 00:58:31,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-12-12 00:58:31,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 01:00:37,011 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 01:00:37,011 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 01:00:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-12 01:00:37,304 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 01:00:37,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-12 01:00:37,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 01:00:37,515 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 120/150 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 750885 conditions, 47939 events (19345/47938 cut-off events. For 444943/452264 co-relation queries the response was YES. Maximal size of possible extension queue 3698. Compared 642190 event pairs, 440 based on Foata normal form. 89/47052 useless extension candidates. Maximal degree in co-relation 372565. Up to 29775 conditions per place.). [2022-12-12 01:00:37,517 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 01:00:37,517 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 01:00:37,518 INFO L445 BasicCegarLoop]: Path program histogram: [12, 4, 3, 2, 1, 1, 1] [2022-12-12 01:00:37,525 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 01:00:37,525 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 01:00:37,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 01:00:37 BasicIcfg [2022-12-12 01:00:37,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 01:00:37,528 INFO L158 Benchmark]: Toolchain (without parser) took 811768.19ms. Allocated memory was 183.5MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 159.5MB in the beginning and 515.1MB in the end (delta: -355.6MB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2022-12-12 01:00:37,529 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 183.5MB. Free memory is still 159.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 01:00:37,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.06ms. Allocated memory is still 183.5MB. Free memory was 159.5MB in the beginning and 147.5MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 01:00:37,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.26ms. Allocated memory is still 183.5MB. Free memory was 147.5MB in the beginning and 145.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 01:00:37,530 INFO L158 Benchmark]: Boogie Preprocessor took 38.79ms. Allocated memory is still 183.5MB. Free memory was 145.3MB in the beginning and 143.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 01:00:37,530 INFO L158 Benchmark]: RCFGBuilder took 747.76ms. Allocated memory is still 183.5MB. Free memory was 143.3MB in the beginning and 110.2MB in the end (delta: 33.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-12-12 01:00:37,530 INFO L158 Benchmark]: TraceAbstraction took 810610.27ms. Allocated memory was 183.5MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 109.2MB in the beginning and 515.1MB in the end (delta: -405.9MB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2022-12-12 01:00:37,531 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 183.5MB. Free memory is still 159.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 304.06ms. Allocated memory is still 183.5MB. Free memory was 159.5MB in the beginning and 147.5MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.26ms. Allocated memory is still 183.5MB. Free memory was 147.5MB in the beginning and 145.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.79ms. Allocated memory is still 183.5MB. Free memory was 145.3MB in the beginning and 143.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 747.76ms. Allocated memory is still 183.5MB. Free memory was 143.3MB in the beginning and 110.2MB in the end (delta: 33.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * TraceAbstraction took 810610.27ms. Allocated memory was 183.5MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 109.2MB in the beginning and 515.1MB in the end (delta: -405.9MB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 120/150 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 750885 conditions, 47939 events (19345/47938 cut-off events. For 444943/452264 co-relation queries the response was YES. Maximal size of possible extension queue 3698. Compared 642190 event pairs, 440 based on Foata normal form. 89/47052 useless extension candidates. Maximal degree in co-relation 372565. Up to 29775 conditions per place.). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 120/150 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 750885 conditions, 47939 events (19345/47938 cut-off events. For 444943/452264 co-relation queries the response was YES. Maximal size of possible extension queue 3698. Compared 642190 event pairs, 440 based on Foata normal form. 89/47052 useless extension candidates. Maximal degree in co-relation 372565. Up to 29775 conditions per place.). - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 120/150 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 750885 conditions, 47939 events (19345/47938 cut-off events. For 444943/452264 co-relation queries the response was YES. Maximal size of possible extension queue 3698. Compared 642190 event pairs, 440 based on Foata normal form. 89/47052 useless extension candidates. Maximal degree in co-relation 372565. Up to 29775 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 158 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 4.5s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 810.5s, OverallIterations: 24, TraceHistogramMax: 2, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 786.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 22 mSolverCounterUnknown, 4126 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4126 mSDsluCounter, 3769 SdHoareTripleChecker+Invalid, 8.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 313 IncrementalHoareTripleChecker+Unchecked, 3207 mSDsCounter, 391 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9961 IncrementalHoareTripleChecker+Invalid, 10687 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 391 mSolverCounterUnsat, 562 mSDtfsCounter, 9961 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4794 GetRequests, 4011 SyntacticMatches, 36 SemanticMatches, 747 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 11234 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389621occurred in iteration=23, InterpolantAutomatonStates: 573, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.5s AutomataMinimizationTime, 23 MinimizatonAttempts, 18112 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 5229 NumberOfCodeBlocks, 5194 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 7156 ConstructedInterpolants, 26 QuantifiedInterpolants, 17493 SizeOfPredicates, 150 NumberOfNonLiveVariables, 5325 ConjunctsInSsa, 172 ConjunctsInUnsatCore, 56 InterpolantComputations, 9 PerfectInterpolantSequences, 453/593 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown