/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:46:50,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:46:50,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:46:50,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:46:50,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:46:50,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:46:50,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:46:50,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:46:50,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:46:50,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:46:50,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:46:50,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:46:50,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:46:50,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:46:50,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:46:50,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:46:50,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:46:50,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:46:50,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:46:50,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:46:50,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:46:50,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:46:50,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:46:50,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:46:50,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 20:46:50,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 20:46:50,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 20:46:50,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 20:46:50,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 20:46:50,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 20:46:50,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:46:50,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:46:50,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:46:50,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:46:50,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:46:50,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:46:50,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:46:50,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:46:50,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:46:50,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:46:50,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:46:50,135 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 [2022-09-20 20:46:50,159 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:46:50,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:46:50,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:46:50,161 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:46:50,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:46:50,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:46:50,161 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:46:50,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:46:50,161 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:46:50,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:46:50,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:46:50,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:46:50,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:46:50,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:46:50,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:46:50,163 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:46:50,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:46:50,163 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:46:50,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:46:50,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:46:50,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:46:50,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:46:50,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:46:50,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:46:50,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:46:50,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:46:50,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:46:50,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:46:50,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:46:50,165 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:46:50,165 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:46:50,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:46:50,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:46:50,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:46:50,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:46:50,381 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:46:50,381 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:46:50,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2022-09-20 20:46:50,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143328427/059c475813014535b874c5a1fa101e73/FLAG4ef17d2f8 [2022-09-20 20:46:50,776 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:46:50,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2022-09-20 20:46:50,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143328427/059c475813014535b874c5a1fa101e73/FLAG4ef17d2f8 [2022-09-20 20:46:51,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143328427/059c475813014535b874c5a1fa101e73 [2022-09-20 20:46:51,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:46:51,184 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:46:51,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:46:51,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:46:51,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:46:51,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:46:51" (1/1) ... [2022-09-20 20:46:51,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a5c0364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:51, skipping insertion in model container [2022-09-20 20:46:51,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:46:51" (1/1) ... [2022-09-20 20:46:51,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:46:51,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:46:51,332 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c[2826,2839] [2022-09-20 20:46:51,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:46:51,354 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:46:51,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c[2826,2839] [2022-09-20 20:46:51,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:46:51,396 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:46:51,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:51 WrapperNode [2022-09-20 20:46:51,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:46:51,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:46:51,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:46:51,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:46:51,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:51" (1/1) ... [2022-09-20 20:46:51,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:51" (1/1) ... [2022-09-20 20:46:51,436 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2022-09-20 20:46:51,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:46:51,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:46:51,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:46:51,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:46:51,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:51" (1/1) ... [2022-09-20 20:46:51,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:51" (1/1) ... [2022-09-20 20:46:51,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:51" (1/1) ... [2022-09-20 20:46:51,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:51" (1/1) ... [2022-09-20 20:46:51,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:51" (1/1) ... [2022-09-20 20:46:51,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:51" (1/1) ... [2022-09-20 20:46:51,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:51" (1/1) ... [2022-09-20 20:46:51,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:46:51,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:46:51,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:46:51,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:46:51,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:51" (1/1) ... [2022-09-20 20:46:51,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:46:51,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:46:51,490 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) [2022-09-20 20:46:51,497 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 [2022-09-20 20:46:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:46:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:46:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:46:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 20:46:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 20:46:51,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 20:46:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 20:46:51,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 20:46:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 20:46:51,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 20:46:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-20 20:46:51,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-20 20:46:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:46:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-09-20 20:46:51,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-09-20 20:46:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-09-20 20:46:51,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-09-20 20:46:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:46:51,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:46:51,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:46:51,516 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 20:46:51,571 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:46:51,573 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:46:51,842 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:46:51,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:46:51,848 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-20 20:46:51,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:46:51 BoogieIcfgContainer [2022-09-20 20:46:51,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:46:51,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:46:51,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:46:51,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:46:51,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:46:51" (1/3) ... [2022-09-20 20:46:51,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7662be02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:46:51, skipping insertion in model container [2022-09-20 20:46:51,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:51" (2/3) ... [2022-09-20 20:46:51,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7662be02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:46:51, skipping insertion in model container [2022-09-20 20:46:51,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:46:51" (3/3) ... [2022-09-20 20:46:51,859 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2022-09-20 20:46:51,870 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:46:51,870 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 20:46:51,870 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:46:51,926 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-09-20 20:46:51,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 169 transitions, 386 flow [2022-09-20 20:46:52,030 INFO L130 PetriNetUnfolder]: 14/163 cut-off events. [2022-09-20 20:46:52,030 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-20 20:46:52,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 163 events. 14/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2022-09-20 20:46:52,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 169 transitions, 386 flow [2022-09-20 20:46:52,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 146 transitions, 328 flow [2022-09-20 20:46:52,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:46:52,055 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;@1296191, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:46:52,055 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-09-20 20:46:52,103 INFO L130 PetriNetUnfolder]: 14/145 cut-off events. [2022-09-20 20:46:52,104 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-20 20:46:52,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:52,104 INFO L208 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] [2022-09-20 20:46:52,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:46:52,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:52,110 INFO L85 PathProgramCache]: Analyzing trace with hash -184393527, now seen corresponding path program 1 times [2022-09-20 20:46:52,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:52,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507639962] [2022-09-20 20:46:52,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:52,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:52,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:52,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507639962] [2022-09-20 20:46:52,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507639962] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:52,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:52,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 20:46:52,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911188947] [2022-09-20 20:46:52,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:52,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 20:46:52,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:52,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 20:46:52,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 20:46:52,450 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 169 [2022-09-20 20:46:52,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 146 transitions, 328 flow. Second operand has 2 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 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) [2022-09-20 20:46:52,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:52,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 169 [2022-09-20 20:46:52,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:52,529 INFO L130 PetriNetUnfolder]: 6/138 cut-off events. [2022-09-20 20:46:52,529 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-09-20 20:46:52,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 138 events. 6/138 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 38/168 useless extension candidates. Maximal degree in co-relation 119. Up to 13 conditions per place. [2022-09-20 20:46:52,532 INFO L137 encePairwiseOnDemand]: 161/169 looper letters, 12 selfloop transitions, 0 changer transitions 2/138 dead transitions. [2022-09-20 20:46:52,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 138 transitions, 336 flow [2022-09-20 20:46:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 20:46:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 20:46:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 316 transitions. [2022-09-20 20:46:52,545 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9349112426035503 [2022-09-20 20:46:52,545 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 316 transitions. [2022-09-20 20:46:52,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 316 transitions. [2022-09-20 20:46:52,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:52,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 316 transitions. [2022-09-20 20:46:52,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 158.0) internal successors, (316), 2 states have internal predecessors, (316), 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) [2022-09-20 20:46:52,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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) [2022-09-20 20:46:52,561 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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) [2022-09-20 20:46:52,562 INFO L175 Difference]: Start difference. First operand has 151 places, 146 transitions, 328 flow. Second operand 2 states and 316 transitions. [2022-09-20 20:46:52,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 138 transitions, 336 flow [2022-09-20 20:46:52,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 138 transitions, 312 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-09-20 20:46:52,571 INFO L231 Difference]: Finished difference. Result has 140 places, 136 transitions, 284 flow [2022-09-20 20:46:52,573 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=284, PETRI_PLACES=140, PETRI_TRANSITIONS=136} [2022-09-20 20:46:52,578 INFO L287 CegarLoopForPetriNet]: 151 programPoint places, -11 predicate places. [2022-09-20 20:46:52,578 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 136 transitions, 284 flow [2022-09-20 20:46:52,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 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) [2022-09-20 20:46:52,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:52,579 INFO L208 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] [2022-09-20 20:46:52,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:46:52,579 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:46:52,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:52,581 INFO L85 PathProgramCache]: Analyzing trace with hash -666427091, now seen corresponding path program 1 times [2022-09-20 20:46:52,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:52,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009781855] [2022-09-20 20:46:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:52,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:52,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:52,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009781855] [2022-09-20 20:46:52,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009781855] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:52,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:52,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:46:52,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654643383] [2022-09-20 20:46:52,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:52,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:46:52,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:52,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:46:52,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:46:52,982 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 169 [2022-09-20 20:46:52,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 136 transitions, 284 flow. Second operand has 7 states, 7 states have (on average 131.71428571428572) internal successors, (922), 7 states have internal predecessors, (922), 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) [2022-09-20 20:46:52,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:52,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 169 [2022-09-20 20:46:52,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:53,203 INFO L130 PetriNetUnfolder]: 187/575 cut-off events. [2022-09-20 20:46:53,203 INFO L131 PetriNetUnfolder]: For 16/22 co-relation queries the response was YES. [2022-09-20 20:46:53,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 575 events. 187/575 cut-off events. For 16/22 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2204 event pairs, 97 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 956. Up to 184 conditions per place. [2022-09-20 20:46:53,222 INFO L137 encePairwiseOnDemand]: 161/169 looper letters, 41 selfloop transitions, 5 changer transitions 4/156 dead transitions. [2022-09-20 20:46:53,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 156 transitions, 435 flow [2022-09-20 20:46:53,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:46:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:46:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 947 transitions. [2022-09-20 20:46:53,227 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8005071851225697 [2022-09-20 20:46:53,227 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 947 transitions. [2022-09-20 20:46:53,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 947 transitions. [2022-09-20 20:46:53,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:53,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 947 transitions. [2022-09-20 20:46:53,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 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) [2022-09-20 20:46:53,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 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) [2022-09-20 20:46:53,233 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 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) [2022-09-20 20:46:53,233 INFO L175 Difference]: Start difference. First operand has 140 places, 136 transitions, 284 flow. Second operand 7 states and 947 transitions. [2022-09-20 20:46:53,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 156 transitions, 435 flow [2022-09-20 20:46:53,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 156 transitions, 435 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 20:46:53,237 INFO L231 Difference]: Finished difference. Result has 147 places, 138 transitions, 311 flow [2022-09-20 20:46:53,238 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=311, PETRI_PLACES=147, PETRI_TRANSITIONS=138} [2022-09-20 20:46:53,238 INFO L287 CegarLoopForPetriNet]: 151 programPoint places, -4 predicate places. [2022-09-20 20:46:53,238 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 138 transitions, 311 flow [2022-09-20 20:46:53,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.71428571428572) internal successors, (922), 7 states have internal predecessors, (922), 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) [2022-09-20 20:46:53,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:53,239 INFO L208 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] [2022-09-20 20:46:53,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:46:53,240 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:46:53,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:53,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1273606265, now seen corresponding path program 1 times [2022-09-20 20:46:53,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:53,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924971250] [2022-09-20 20:46:53,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:53,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:53,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:53,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924971250] [2022-09-20 20:46:53,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924971250] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:53,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:53,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:46:53,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585408515] [2022-09-20 20:46:53,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:53,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:46:53,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:53,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:46:53,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:46:53,585 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2022-09-20 20:46:53,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 138 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2022-09-20 20:46:53,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:53,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2022-09-20 20:46:53,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:55,847 INFO L130 PetriNetUnfolder]: 20438/30236 cut-off events. [2022-09-20 20:46:55,847 INFO L131 PetriNetUnfolder]: For 3131/3388 co-relation queries the response was YES. [2022-09-20 20:46:55,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60169 conditions, 30236 events. 20438/30236 cut-off events. For 3131/3388 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 198159 event pairs, 1702 based on Foata normal form. 2/21944 useless extension candidates. Maximal degree in co-relation 60162. Up to 19304 conditions per place. [2022-09-20 20:46:56,040 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 80 selfloop transitions, 17 changer transitions 7/188 dead transitions. [2022-09-20 20:46:56,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 188 transitions, 647 flow [2022-09-20 20:46:56,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 20:46:56,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 20:46:56,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2022-09-20 20:46:56,043 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7297830374753451 [2022-09-20 20:46:56,043 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 740 transitions. [2022-09-20 20:46:56,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 740 transitions. [2022-09-20 20:46:56,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:56,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 740 transitions. [2022-09-20 20:46:56,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 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) [2022-09-20 20:46:56,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 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) [2022-09-20 20:46:56,046 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 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) [2022-09-20 20:46:56,047 INFO L175 Difference]: Start difference. First operand has 147 places, 138 transitions, 311 flow. Second operand 6 states and 740 transitions. [2022-09-20 20:46:56,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 188 transitions, 647 flow [2022-09-20 20:46:56,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 188 transitions, 632 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-20 20:46:56,053 INFO L231 Difference]: Finished difference. Result has 147 places, 152 transitions, 407 flow [2022-09-20 20:46:56,054 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=407, PETRI_PLACES=147, PETRI_TRANSITIONS=152} [2022-09-20 20:46:56,055 INFO L287 CegarLoopForPetriNet]: 151 programPoint places, -4 predicate places. [2022-09-20 20:46:56,055 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 152 transitions, 407 flow [2022-09-20 20:46:56,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2022-09-20 20:46:56,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:56,056 INFO L208 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] [2022-09-20 20:46:56,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:46:56,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:46:56,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:56,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1739800807, now seen corresponding path program 1 times [2022-09-20 20:46:56,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:56,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137419845] [2022-09-20 20:46:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:56,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:56,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:56,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137419845] [2022-09-20 20:46:56,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137419845] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:46:56,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576445872] [2022-09-20 20:46:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:56,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:46:56,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:46:56,282 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) [2022-09-20 20:46:56,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 20:46:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:56,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-20 20:46:56,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:46:56,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:56,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 20:46:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:56,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576445872] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 20:46:56,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 20:46:56,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-09-20 20:46:56,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895054722] [2022-09-20 20:46:56,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 20:46:56,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 20:46:56,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:56,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 20:46:56,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-09-20 20:46:56,759 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 169 [2022-09-20 20:46:56,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 152 transitions, 407 flow. Second operand has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 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) [2022-09-20 20:46:56,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:56,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 169 [2022-09-20 20:46:56,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:59,156 INFO L130 PetriNetUnfolder]: 20532/30760 cut-off events. [2022-09-20 20:46:59,156 INFO L131 PetriNetUnfolder]: For 12263/12470 co-relation queries the response was YES. [2022-09-20 20:46:59,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68103 conditions, 30760 events. 20532/30760 cut-off events. For 12263/12470 co-relation queries the response was YES. Maximal size of possible extension queue 1602. Compared 211017 event pairs, 9365 based on Foata normal form. 986/23808 useless extension candidates. Maximal degree in co-relation 68096. Up to 5979 conditions per place. [2022-09-20 20:46:59,398 INFO L137 encePairwiseOnDemand]: 155/169 looper letters, 105 selfloop transitions, 18 changer transitions 4/231 dead transitions. [2022-09-20 20:46:59,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 231 transitions, 868 flow [2022-09-20 20:46:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 20:46:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 20:46:59,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1425 transitions. [2022-09-20 20:46:59,401 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7665411511565358 [2022-09-20 20:46:59,401 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1425 transitions. [2022-09-20 20:46:59,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1425 transitions. [2022-09-20 20:46:59,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:59,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1425 transitions. [2022-09-20 20:46:59,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.54545454545453) internal successors, (1425), 11 states have internal predecessors, (1425), 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) [2022-09-20 20:46:59,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 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) [2022-09-20 20:46:59,407 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 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) [2022-09-20 20:46:59,407 INFO L175 Difference]: Start difference. First operand has 147 places, 152 transitions, 407 flow. Second operand 11 states and 1425 transitions. [2022-09-20 20:46:59,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 231 transitions, 868 flow [2022-09-20 20:46:59,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 231 transitions, 864 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 20:46:59,414 INFO L231 Difference]: Finished difference. Result has 162 places, 158 transitions, 509 flow [2022-09-20 20:46:59,414 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=509, PETRI_PLACES=162, PETRI_TRANSITIONS=158} [2022-09-20 20:46:59,414 INFO L287 CegarLoopForPetriNet]: 151 programPoint places, 11 predicate places. [2022-09-20 20:46:59,415 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 158 transitions, 509 flow [2022-09-20 20:46:59,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.0) internal successors, (1107), 9 states have internal predecessors, (1107), 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) [2022-09-20 20:46:59,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:59,415 INFO L208 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] [2022-09-20 20:46:59,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-20 20:46:59,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:46:59,635 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:46:59,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:59,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1738580273, now seen corresponding path program 2 times [2022-09-20 20:46:59,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:59,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124539360] [2022-09-20 20:46:59,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:59,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:59,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:59,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124539360] [2022-09-20 20:46:59,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124539360] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:46:59,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721330992] [2022-09-20 20:46:59,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 20:46:59,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:46:59,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:46:59,936 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) [2022-09-20 20:46:59,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 20:47:00,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-20 20:47:00,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 20:47:00,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-20 20:47:00,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:47:00,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 20:47:00,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 20:47:00,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721330992] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:47:00,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 20:47:00,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-09-20 20:47:00,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843464043] [2022-09-20 20:47:00,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:47:00,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:47:00,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:47:00,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:47:00,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-09-20 20:47:00,392 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 169 [2022-09-20 20:47:00,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 158 transitions, 509 flow. Second operand has 7 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 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) [2022-09-20 20:47:00,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:47:00,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 169 [2022-09-20 20:47:00,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:47:01,803 INFO L130 PetriNetUnfolder]: 10160/15522 cut-off events. [2022-09-20 20:47:01,804 INFO L131 PetriNetUnfolder]: For 4454/4491 co-relation queries the response was YES. [2022-09-20 20:47:01,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33741 conditions, 15522 events. 10160/15522 cut-off events. For 4454/4491 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 103911 event pairs, 5706 based on Foata normal form. 3/10147 useless extension candidates. Maximal degree in co-relation 33727. Up to 10107 conditions per place. [2022-09-20 20:47:02,066 INFO L137 encePairwiseOnDemand]: 158/169 looper letters, 56 selfloop transitions, 15 changer transitions 4/182 dead transitions. [2022-09-20 20:47:02,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 182 transitions, 730 flow [2022-09-20 20:47:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 20:47:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 20:47:02,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1009 transitions. [2022-09-20 20:47:02,069 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.746301775147929 [2022-09-20 20:47:02,069 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1009 transitions. [2022-09-20 20:47:02,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1009 transitions. [2022-09-20 20:47:02,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:47:02,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1009 transitions. [2022-09-20 20:47:02,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.125) internal successors, (1009), 8 states have internal predecessors, (1009), 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) [2022-09-20 20:47:02,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 169.0) internal successors, (1521), 9 states have internal predecessors, (1521), 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) [2022-09-20 20:47:02,073 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 169.0) internal successors, (1521), 9 states have internal predecessors, (1521), 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) [2022-09-20 20:47:02,073 INFO L175 Difference]: Start difference. First operand has 162 places, 158 transitions, 509 flow. Second operand 8 states and 1009 transitions. [2022-09-20 20:47:02,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 182 transitions, 730 flow [2022-09-20 20:47:02,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 182 transitions, 718 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-09-20 20:47:02,077 INFO L231 Difference]: Finished difference. Result has 170 places, 162 transitions, 572 flow [2022-09-20 20:47:02,077 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=572, PETRI_PLACES=170, PETRI_TRANSITIONS=162} [2022-09-20 20:47:02,078 INFO L287 CegarLoopForPetriNet]: 151 programPoint places, 19 predicate places. [2022-09-20 20:47:02,078 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 162 transitions, 572 flow [2022-09-20 20:47:02,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 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) [2022-09-20 20:47:02,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:47:02,078 INFO L208 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, 1, 1] [2022-09-20 20:47:02,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 20:47:02,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:47:02,291 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:47:02,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:47:02,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1380598651, now seen corresponding path program 1 times [2022-09-20 20:47:02,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:47:02,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535211816] [2022-09-20 20:47:02,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:47:02,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:47:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:47:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 20:47:02,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:47:02,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535211816] [2022-09-20 20:47:02,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535211816] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:47:02,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979731638] [2022-09-20 20:47:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:47:02,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:47:02,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:47:02,414 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) [2022-09-20 20:47:02,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 20:47:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:47:02,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-20 20:47:02,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:47:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 20:47:02,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 20:47:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 20:47:02,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979731638] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 20:47:02,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 20:47:02,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-09-20 20:47:02,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407955020] [2022-09-20 20:47:02,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 20:47:02,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 20:47:02,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:47:02,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 20:47:02,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-09-20 20:47:02,805 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 169 [2022-09-20 20:47:02,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 162 transitions, 572 flow. Second operand has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 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) [2022-09-20 20:47:02,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:47:02,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 169 [2022-09-20 20:47:02,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:47:09,290 INFO L130 PetriNetUnfolder]: 52277/81647 cut-off events. [2022-09-20 20:47:09,290 INFO L131 PetriNetUnfolder]: For 126732/130433 co-relation queries the response was YES. [2022-09-20 20:47:09,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221454 conditions, 81647 events. 52277/81647 cut-off events. For 126732/130433 co-relation queries the response was YES. Maximal size of possible extension queue 4558. Compared 691471 event pairs, 17464 based on Foata normal form. 2206/65159 useless extension candidates. Maximal degree in co-relation 221435. Up to 15745 conditions per place. [2022-09-20 20:47:10,126 INFO L137 encePairwiseOnDemand]: 154/169 looper letters, 134 selfloop transitions, 28 changer transitions 0/269 dead transitions. [2022-09-20 20:47:10,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 269 transitions, 1407 flow [2022-09-20 20:47:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 20:47:10,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 20:47:10,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1543 transitions. [2022-09-20 20:47:10,129 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7608481262327417 [2022-09-20 20:47:10,129 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1543 transitions. [2022-09-20 20:47:10,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1543 transitions. [2022-09-20 20:47:10,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:47:10,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1543 transitions. [2022-09-20 20:47:10,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 128.58333333333334) internal successors, (1543), 12 states have internal predecessors, (1543), 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) [2022-09-20 20:47:10,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 169.0) internal successors, (2197), 13 states have internal predecessors, (2197), 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) [2022-09-20 20:47:10,135 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 169.0) internal successors, (2197), 13 states have internal predecessors, (2197), 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) [2022-09-20 20:47:10,135 INFO L175 Difference]: Start difference. First operand has 170 places, 162 transitions, 572 flow. Second operand 12 states and 1543 transitions. [2022-09-20 20:47:10,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 269 transitions, 1407 flow [2022-09-20 20:47:10,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 269 transitions, 1372 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-09-20 20:47:10,506 INFO L231 Difference]: Finished difference. Result has 178 places, 178 transitions, 752 flow [2022-09-20 20:47:10,506 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=752, PETRI_PLACES=178, PETRI_TRANSITIONS=178} [2022-09-20 20:47:10,507 INFO L287 CegarLoopForPetriNet]: 151 programPoint places, 27 predicate places. [2022-09-20 20:47:10,507 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 178 transitions, 752 flow [2022-09-20 20:47:10,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 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) [2022-09-20 20:47:10,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:47:10,507 INFO L208 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, 1, 1] [2022-09-20 20:47:10,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-20 20:47:10,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:47:10,724 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:47:10,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:47:10,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1638961113, now seen corresponding path program 1 times [2022-09-20 20:47:10,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:47:10,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203157144] [2022-09-20 20:47:10,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:47:10,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:47:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:47:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 20:47:10,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:47:10,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203157144] [2022-09-20 20:47:10,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203157144] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:47:10,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838280952] [2022-09-20 20:47:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:47:10,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:47:10,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:47:10,832 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) [2022-09-20 20:47:10,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 20:47:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:47:10,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-20 20:47:10,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:47:11,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 20:47:11,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 20:47:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 20:47:11,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838280952] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 20:47:11,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 20:47:11,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-09-20 20:47:11,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225418850] [2022-09-20 20:47:11,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 20:47:11,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 20:47:11,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:47:11,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 20:47:11,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-09-20 20:47:11,306 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 169 [2022-09-20 20:47:11,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 178 transitions, 752 flow. Second operand has 9 states, 9 states have (on average 123.55555555555556) internal successors, (1112), 9 states have internal predecessors, (1112), 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) [2022-09-20 20:47:11,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:47:11,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 169 [2022-09-20 20:47:11,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:47:24,021 INFO L130 PetriNetUnfolder]: 93004/144280 cut-off events. [2022-09-20 20:47:24,021 INFO L131 PetriNetUnfolder]: For 317222/327264 co-relation queries the response was YES. [2022-09-20 20:47:25,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459675 conditions, 144280 events. 93004/144280 cut-off events. For 317222/327264 co-relation queries the response was YES. Maximal size of possible extension queue 8194. Compared 1312543 event pairs, 11557 based on Foata normal form. 4396/132648 useless extension candidates. Maximal degree in co-relation 459654. Up to 35389 conditions per place. [2022-09-20 20:47:25,819 INFO L137 encePairwiseOnDemand]: 154/169 looper letters, 164 selfloop transitions, 38 changer transitions 0/312 dead transitions. [2022-09-20 20:47:25,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 312 transitions, 1960 flow [2022-09-20 20:47:25,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 20:47:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 20:47:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1539 transitions. [2022-09-20 20:47:25,825 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7588757396449705 [2022-09-20 20:47:25,825 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1539 transitions. [2022-09-20 20:47:25,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1539 transitions. [2022-09-20 20:47:25,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:47:25,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1539 transitions. [2022-09-20 20:47:25,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 128.25) internal successors, (1539), 12 states have internal predecessors, (1539), 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) [2022-09-20 20:47:25,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 169.0) internal successors, (2197), 13 states have internal predecessors, (2197), 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) [2022-09-20 20:47:25,831 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 169.0) internal successors, (2197), 13 states have internal predecessors, (2197), 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) [2022-09-20 20:47:25,831 INFO L175 Difference]: Start difference. First operand has 178 places, 178 transitions, 752 flow. Second operand 12 states and 1539 transitions. [2022-09-20 20:47:25,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 312 transitions, 1960 flow [2022-09-20 20:47:28,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 312 transitions, 1954 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 20:47:28,788 INFO L231 Difference]: Finished difference. Result has 193 places, 204 transitions, 1111 flow [2022-09-20 20:47:28,788 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1111, PETRI_PLACES=193, PETRI_TRANSITIONS=204} [2022-09-20 20:47:28,788 INFO L287 CegarLoopForPetriNet]: 151 programPoint places, 42 predicate places. [2022-09-20 20:47:28,788 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 204 transitions, 1111 flow [2022-09-20 20:47:28,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 123.55555555555556) internal successors, (1112), 9 states have internal predecessors, (1112), 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) [2022-09-20 20:47:28,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:47:28,789 INFO L208 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, 1, 1] [2022-09-20 20:47:28,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-20 20:47:29,003 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 [2022-09-20 20:47:29,004 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:47:29,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:47:29,004 INFO L85 PathProgramCache]: Analyzing trace with hash -5375787, now seen corresponding path program 2 times [2022-09-20 20:47:29,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:47:29,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547979108] [2022-09-20 20:47:29,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:47:29,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:47:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:47:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 20:47:29,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:47:29,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547979108] [2022-09-20 20:47:29,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547979108] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:47:29,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:47:29,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:47:29,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613497926] [2022-09-20 20:47:29,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:47:29,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:47:29,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:47:29,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:47:29,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:47:29,109 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 169 [2022-09-20 20:47:29,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 204 transitions, 1111 flow. Second operand has 6 states, 6 states have (on average 123.83333333333333) internal successors, (743), 6 states have internal predecessors, (743), 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) [2022-09-20 20:47:29,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:47:29,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 169 [2022-09-20 20:47:29,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand