/usr/bin/java -Xmx16000000000 -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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 15:00:20,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 15:00:20,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 15:00:20,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 15:00:20,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 15:00:20,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 15:00:20,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 15:00:20,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 15:00:20,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 15:00:20,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 15:00:20,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 15:00:20,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 15:00:20,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 15:00:20,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 15:00:20,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 15:00:20,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 15:00:20,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 15:00:20,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 15:00:20,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 15:00:20,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 15:00:20,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 15:00:20,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 15:00:20,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 15:00:20,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 15:00:20,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 15:00:20,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 15:00:20,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 15:00:20,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 15:00:20,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 15:00:20,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 15:00:20,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 15:00:20,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 15:00:20,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 15:00:20,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 15:00:20,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 15:00:20,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 15:00:20,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 15:00:20,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 15:00:20,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 15:00:20,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 15:00:20,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 15:00:20,131 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-After.epf [2022-01-19 15:00:20,146 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 15:00:20,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 15:00:20,148 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 15:00:20,148 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 15:00:20,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 15:00:20,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 15:00:20,149 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 15:00:20,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 15:00:20,149 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 15:00:20,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 15:00:20,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 15:00:20,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 15:00:20,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 15:00:20,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 15:00:20,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 15:00:20,150 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 15:00:20,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 15:00:20,150 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 15:00:20,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 15:00:20,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 15:00:20,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 15:00:20,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 15:00:20,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 15:00:20,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 15:00:20,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 15:00:20,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 15:00:20,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 15:00:20,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 15:00:20,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 15:00:20,151 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 15:00:20,151 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 15:00:20,151 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 15:00:20,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 15:00:20,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 15:00:20,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 15:00:20,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 15:00:20,374 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 15:00:20,374 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 15:00:20,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2022-01-19 15:00:20,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1823cd5b3/6053b010351940eea30f5cc117f0e602/FLAGbee6b8380 [2022-01-19 15:00:20,775 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 15:00:20,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2022-01-19 15:00:20,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1823cd5b3/6053b010351940eea30f5cc117f0e602/FLAGbee6b8380 [2022-01-19 15:00:21,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1823cd5b3/6053b010351940eea30f5cc117f0e602 [2022-01-19 15:00:21,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 15:00:21,192 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 15:00:21,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 15:00:21,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 15:00:21,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 15:00:21,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 03:00:21" (1/1) ... [2022-01-19 15:00:21,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415819d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:00:21, skipping insertion in model container [2022-01-19 15:00:21,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 03:00:21" (1/1) ... [2022-01-19 15:00:21,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 15:00:21,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 15:00:21,393 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/popl20-threaded-sum-3.wvr.c[2957,2970] [2022-01-19 15:00:21,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 15:00:21,400 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 15:00:21,441 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/popl20-threaded-sum-3.wvr.c[2957,2970] [2022-01-19 15:00:21,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 15:00:21,453 INFO L208 MainTranslator]: Completed translation [2022-01-19 15:00:21,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:00:21 WrapperNode [2022-01-19 15:00:21,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 15:00:21,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 15:00:21,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 15:00:21,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 15:00:21,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:00:21" (1/1) ... [2022-01-19 15:00:21,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:00:21" (1/1) ... [2022-01-19 15:00:21,495 INFO L137 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2022-01-19 15:00:21,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 15:00:21,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 15:00:21,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 15:00:21,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 15:00:21,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:00:21" (1/1) ... [2022-01-19 15:00:21,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:00:21" (1/1) ... [2022-01-19 15:00:21,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:00:21" (1/1) ... [2022-01-19 15:00:21,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:00:21" (1/1) ... [2022-01-19 15:00:21,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:00:21" (1/1) ... [2022-01-19 15:00:21,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:00:21" (1/1) ... [2022-01-19 15:00:21,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:00:21" (1/1) ... [2022-01-19 15:00:21,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 15:00:21,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 15:00:21,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 15:00:21,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 15:00:21,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:00:21" (1/1) ... [2022-01-19 15:00:21,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 15:00:21,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:00:21,576 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) [2022-01-19 15:00:21,599 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 [2022-01-19 15:00:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 15:00:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 15:00:21,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 15:00:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 15:00:21,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 15:00:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 15:00:21,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 15:00:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 15:00:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 15:00:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 15:00:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 15:00:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 15:00:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 15:00:21,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 15:00:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 15:00:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 15:00:21,614 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 15:00:21,668 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 15:00:21,669 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 15:00:21,856 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 15:00:21,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 15:00:21,892 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 15:00:21,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 03:00:21 BoogieIcfgContainer [2022-01-19 15:00:21,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 15:00:21,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 15:00:21,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 15:00:21,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 15:00:21,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 03:00:21" (1/3) ... [2022-01-19 15:00:21,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d60d24d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 03:00:21, skipping insertion in model container [2022-01-19 15:00:21,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:00:21" (2/3) ... [2022-01-19 15:00:21,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d60d24d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 03:00:21, skipping insertion in model container [2022-01-19 15:00:21,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 03:00:21" (3/3) ... [2022-01-19 15:00:21,904 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2022-01-19 15:00:21,908 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 15:00:21,908 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 15:00:21,908 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 15:00:21,945 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,946 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,946 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,947 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,947 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,949 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,951 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,951 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,951 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,951 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,952 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,952 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,953 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,953 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,953 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,953 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,953 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,954 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,955 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,955 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,955 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,955 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,955 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,956 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,956 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,956 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,956 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,957 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,957 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,957 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,957 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,957 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,957 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,957 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,958 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,958 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,958 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,958 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,958 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,958 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,960 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,961 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,961 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,961 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,961 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,962 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,962 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,962 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,962 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,962 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,963 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,963 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,963 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,963 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,963 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:00:21,966 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 15:00:21,998 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 15:00:22,003 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 15:00:22,003 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 15:00:22,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 115 transitions, 254 flow [2022-01-19 15:00:22,046 INFO L129 PetriNetUnfolder]: 8/112 cut-off events. [2022-01-19 15:00:22,046 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 15:00:22,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 8/112 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2022-01-19 15:00:22,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 115 transitions, 254 flow [2022-01-19 15:00:22,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 101 transitions, 220 flow [2022-01-19 15:00:22,077 INFO L129 PetriNetUnfolder]: 8/100 cut-off events. [2022-01-19 15:00:22,077 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 15:00:22,077 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:00:22,078 INFO L254 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] [2022-01-19 15:00:22,078 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 15:00:22,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:00:22,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1016748740, now seen corresponding path program 1 times [2022-01-19 15:00:22,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:00:22,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149684832] [2022-01-19 15:00:22,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:00:22,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:00:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:00:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:22,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:00:22,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149684832] [2022-01-19 15:00:22,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149684832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:00:22,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:00:22,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 15:00:22,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505212265] [2022-01-19 15:00:22,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:00:22,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 15:00:22,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:00:22,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 15:00:22,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-19 15:00:22,759 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 115 [2022-01-19 15:00:22,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 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) [2022-01-19 15:00:22,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:00:22,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 115 [2022-01-19 15:00:22,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:00:23,119 INFO L129 PetriNetUnfolder]: 301/767 cut-off events. [2022-01-19 15:00:23,119 INFO L130 PetriNetUnfolder]: For 98/109 co-relation queries the response was YES. [2022-01-19 15:00:23,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 767 events. 301/767 cut-off events. For 98/109 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4077 event pairs, 77 based on Foata normal form. 89/756 useless extension candidates. Maximal degree in co-relation 1120. Up to 310 conditions per place. [2022-01-19 15:00:23,126 INFO L132 encePairwiseOnDemand]: 100/115 looper letters, 54 selfloop transitions, 11 changer transitions 2/123 dead transitions. [2022-01-19 15:00:23,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 123 transitions, 416 flow [2022-01-19 15:00:23,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 15:00:23,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 15:00:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 634 transitions. [2022-01-19 15:00:23,137 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6891304347826087 [2022-01-19 15:00:23,137 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 634 transitions. [2022-01-19 15:00:23,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 634 transitions. [2022-01-19 15:00:23,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:00:23,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 634 transitions. [2022-01-19 15:00:23,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.25) internal successors, (634), 8 states have internal predecessors, (634), 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) [2022-01-19 15:00:23,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 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) [2022-01-19 15:00:23,149 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 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) [2022-01-19 15:00:23,150 INFO L186 Difference]: Start difference. First operand has 103 places, 101 transitions, 220 flow. Second operand 8 states and 634 transitions. [2022-01-19 15:00:23,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 123 transitions, 416 flow [2022-01-19 15:00:23,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 123 transitions, 392 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 15:00:23,156 INFO L242 Difference]: Finished difference. Result has 107 places, 101 transitions, 260 flow [2022-01-19 15:00:23,158 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=260, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2022-01-19 15:00:23,161 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 4 predicate places. [2022-01-19 15:00:23,162 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 260 flow [2022-01-19 15:00:23,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 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) [2022-01-19 15:00:23,162 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:00:23,162 INFO L254 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] [2022-01-19 15:00:23,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 15:00:23,163 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 15:00:23,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:00:23,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1082138286, now seen corresponding path program 1 times [2022-01-19 15:00:23,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:00:23,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645533674] [2022-01-19 15:00:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:00:23,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:00:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:00:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:23,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:00:23,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645533674] [2022-01-19 15:00:23,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645533674] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 15:00:23,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706575032] [2022-01-19 15:00:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:00:23,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:00:23,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:00:23,413 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) [2022-01-19 15:00:23,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 15:00:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:00:23,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 15:00:23,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:00:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:23,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 15:00:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:24,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706575032] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 15:00:24,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 15:00:24,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 19 [2022-01-19 15:00:24,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700044370] [2022-01-19 15:00:24,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 15:00:24,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 15:00:24,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:00:24,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 15:00:24,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-01-19 15:00:24,070 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 115 [2022-01-19 15:00:24,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 260 flow. Second operand has 19 states, 19 states have (on average 73.05263157894737) internal successors, (1388), 19 states have internal predecessors, (1388), 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) [2022-01-19 15:00:24,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:00:24,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 115 [2022-01-19 15:00:24,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:00:24,636 INFO L129 PetriNetUnfolder]: 467/1001 cut-off events. [2022-01-19 15:00:24,637 INFO L130 PetriNetUnfolder]: For 497/516 co-relation queries the response was YES. [2022-01-19 15:00:24,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1001 events. 467/1001 cut-off events. For 497/516 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5058 event pairs, 13 based on Foata normal form. 43/980 useless extension candidates. Maximal degree in co-relation 1684. Up to 227 conditions per place. [2022-01-19 15:00:24,644 INFO L132 encePairwiseOnDemand]: 101/115 looper letters, 77 selfloop transitions, 25 changer transitions 0/159 dead transitions. [2022-01-19 15:00:24,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 159 transitions, 655 flow [2022-01-19 15:00:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 15:00:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 15:00:24,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1079 transitions. [2022-01-19 15:00:24,648 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6701863354037267 [2022-01-19 15:00:24,648 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1079 transitions. [2022-01-19 15:00:24,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1079 transitions. [2022-01-19 15:00:24,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:00:24,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1079 transitions. [2022-01-19 15:00:24,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 77.07142857142857) internal successors, (1079), 14 states have internal predecessors, (1079), 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) [2022-01-19 15:00:24,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2022-01-19 15:00:24,654 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2022-01-19 15:00:24,655 INFO L186 Difference]: Start difference. First operand has 107 places, 101 transitions, 260 flow. Second operand 14 states and 1079 transitions. [2022-01-19 15:00:24,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 159 transitions, 655 flow [2022-01-19 15:00:24,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 159 transitions, 643 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 15:00:24,660 INFO L242 Difference]: Finished difference. Result has 121 places, 113 transitions, 408 flow [2022-01-19 15:00:24,660 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=408, PETRI_PLACES=121, PETRI_TRANSITIONS=113} [2022-01-19 15:00:24,661 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 18 predicate places. [2022-01-19 15:00:24,661 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 113 transitions, 408 flow [2022-01-19 15:00:24,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 73.05263157894737) internal successors, (1388), 19 states have internal predecessors, (1388), 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) [2022-01-19 15:00:24,661 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:00:24,662 INFO L254 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] [2022-01-19 15:00:24,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 15:00:24,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:00:24,879 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 15:00:24,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:00:24,879 INFO L85 PathProgramCache]: Analyzing trace with hash -958633325, now seen corresponding path program 1 times [2022-01-19 15:00:24,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:00:24,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182502062] [2022-01-19 15:00:24,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:00:24,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:00:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:00:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:25,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:00:25,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182502062] [2022-01-19 15:00:25,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182502062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:00:25,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:00:25,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 15:00:25,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342426452] [2022-01-19 15:00:25,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:00:25,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 15:00:25,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:00:25,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 15:00:25,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-19 15:00:25,084 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2022-01-19 15:00:25,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 113 transitions, 408 flow. Second operand has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 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) [2022-01-19 15:00:25,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:00:25,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2022-01-19 15:00:25,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:00:25,769 INFO L129 PetriNetUnfolder]: 2345/4747 cut-off events. [2022-01-19 15:00:25,769 INFO L130 PetriNetUnfolder]: For 9265/9268 co-relation queries the response was YES. [2022-01-19 15:00:25,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14428 conditions, 4747 events. 2345/4747 cut-off events. For 9265/9268 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 34780 event pairs, 160 based on Foata normal form. 1/4287 useless extension candidates. Maximal degree in co-relation 12058. Up to 1093 conditions per place. [2022-01-19 15:00:25,802 INFO L132 encePairwiseOnDemand]: 102/115 looper letters, 177 selfloop transitions, 105 changer transitions 0/350 dead transitions. [2022-01-19 15:00:25,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 350 transitions, 2451 flow [2022-01-19 15:00:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 15:00:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 15:00:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1329 transitions. [2022-01-19 15:00:25,804 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8254658385093168 [2022-01-19 15:00:25,805 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1329 transitions. [2022-01-19 15:00:25,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1329 transitions. [2022-01-19 15:00:25,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:00:25,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1329 transitions. [2022-01-19 15:00:25,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 94.92857142857143) internal successors, (1329), 14 states have internal predecessors, (1329), 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) [2022-01-19 15:00:25,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2022-01-19 15:00:25,809 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2022-01-19 15:00:25,810 INFO L186 Difference]: Start difference. First operand has 121 places, 113 transitions, 408 flow. Second operand 14 states and 1329 transitions. [2022-01-19 15:00:25,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 350 transitions, 2451 flow [2022-01-19 15:00:25,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 350 transitions, 2311 flow, removed 61 selfloop flow, removed 6 redundant places. [2022-01-19 15:00:25,829 INFO L242 Difference]: Finished difference. Result has 139 places, 226 transitions, 1697 flow [2022-01-19 15:00:25,829 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1697, PETRI_PLACES=139, PETRI_TRANSITIONS=226} [2022-01-19 15:00:25,830 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 36 predicate places. [2022-01-19 15:00:25,830 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 226 transitions, 1697 flow [2022-01-19 15:00:25,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 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) [2022-01-19 15:00:25,830 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:00:25,830 INFO L254 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] [2022-01-19 15:00:25,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 15:00:25,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 15:00:25,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:00:25,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1199619273, now seen corresponding path program 2 times [2022-01-19 15:00:25,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:00:25,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289276471] [2022-01-19 15:00:25,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:00:25,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:00:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:00:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:26,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:00:26,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289276471] [2022-01-19 15:00:26,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289276471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:00:26,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:00:26,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 15:00:26,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602945578] [2022-01-19 15:00:26,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:00:26,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 15:00:26,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:00:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 15:00:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-19 15:00:26,019 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 115 [2022-01-19 15:00:26,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 226 transitions, 1697 flow. Second operand has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 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) [2022-01-19 15:00:26,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:00:26,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 115 [2022-01-19 15:00:26,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:00:26,507 INFO L129 PetriNetUnfolder]: 1521/3597 cut-off events. [2022-01-19 15:00:26,507 INFO L130 PetriNetUnfolder]: For 24796/25093 co-relation queries the response was YES. [2022-01-19 15:00:26,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16497 conditions, 3597 events. 1521/3597 cut-off events. For 24796/25093 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 28255 event pairs, 138 based on Foata normal form. 85/3442 useless extension candidates. Maximal degree in co-relation 13499. Up to 1192 conditions per place. [2022-01-19 15:00:26,547 INFO L132 encePairwiseOnDemand]: 104/115 looper letters, 229 selfloop transitions, 64 changer transitions 0/363 dead transitions. [2022-01-19 15:00:26,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 363 transitions, 3794 flow [2022-01-19 15:00:26,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 15:00:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 15:00:26,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 655 transitions. [2022-01-19 15:00:26,549 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7119565217391305 [2022-01-19 15:00:26,549 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 655 transitions. [2022-01-19 15:00:26,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 655 transitions. [2022-01-19 15:00:26,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:00:26,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 655 transitions. [2022-01-19 15:00:26,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.875) internal successors, (655), 8 states have internal predecessors, (655), 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) [2022-01-19 15:00:26,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 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) [2022-01-19 15:00:26,552 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 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) [2022-01-19 15:00:26,552 INFO L186 Difference]: Start difference. First operand has 139 places, 226 transitions, 1697 flow. Second operand 8 states and 655 transitions. [2022-01-19 15:00:26,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 363 transitions, 3794 flow [2022-01-19 15:00:26,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 363 transitions, 3592 flow, removed 101 selfloop flow, removed 0 redundant places. [2022-01-19 15:00:26,598 INFO L242 Difference]: Finished difference. Result has 149 places, 269 transitions, 2403 flow [2022-01-19 15:00:26,598 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2403, PETRI_PLACES=149, PETRI_TRANSITIONS=269} [2022-01-19 15:00:26,599 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 46 predicate places. [2022-01-19 15:00:26,599 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 269 transitions, 2403 flow [2022-01-19 15:00:26,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 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) [2022-01-19 15:00:26,599 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:00:26,599 INFO L254 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] [2022-01-19 15:00:26,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 15:00:26,599 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 15:00:26,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:00:26,600 INFO L85 PathProgramCache]: Analyzing trace with hash 82552129, now seen corresponding path program 1 times [2022-01-19 15:00:26,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:00:26,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857601410] [2022-01-19 15:00:26,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:00:26,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:00:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:00:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:26,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:00:26,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857601410] [2022-01-19 15:00:26,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857601410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:00:26,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:00:26,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 15:00:26,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139593993] [2022-01-19 15:00:26,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:00:26,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 15:00:26,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:00:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 15:00:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 15:00:26,765 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2022-01-19 15:00:26,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 269 transitions, 2403 flow. Second operand has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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) [2022-01-19 15:00:26,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:00:26,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2022-01-19 15:00:26,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:00:28,684 INFO L129 PetriNetUnfolder]: 7039/14185 cut-off events. [2022-01-19 15:00:28,684 INFO L130 PetriNetUnfolder]: For 107585/107721 co-relation queries the response was YES. [2022-01-19 15:00:28,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65272 conditions, 14185 events. 7039/14185 cut-off events. For 107585/107721 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 124460 event pairs, 725 based on Foata normal form. 165/13643 useless extension candidates. Maximal degree in co-relation 55465. Up to 3064 conditions per place. [2022-01-19 15:00:28,810 INFO L132 encePairwiseOnDemand]: 105/115 looper letters, 330 selfloop transitions, 195 changer transitions 0/595 dead transitions. [2022-01-19 15:00:28,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 595 transitions, 7400 flow [2022-01-19 15:00:28,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 15:00:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 15:00:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1455 transitions. [2022-01-19 15:00:28,813 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2022-01-19 15:00:28,813 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1455 transitions. [2022-01-19 15:00:28,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1455 transitions. [2022-01-19 15:00:28,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:00:28,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1455 transitions. [2022-01-19 15:00:28,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 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) [2022-01-19 15:00:28,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 115.0) internal successors, (1840), 16 states have internal predecessors, (1840), 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) [2022-01-19 15:00:28,818 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 115.0) internal successors, (1840), 16 states have internal predecessors, (1840), 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) [2022-01-19 15:00:28,818 INFO L186 Difference]: Start difference. First operand has 149 places, 269 transitions, 2403 flow. Second operand 15 states and 1455 transitions. [2022-01-19 15:00:28,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 595 transitions, 7400 flow [2022-01-19 15:00:29,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 595 transitions, 7259 flow, removed 17 selfloop flow, removed 4 redundant places. [2022-01-19 15:00:29,031 INFO L242 Difference]: Finished difference. Result has 171 places, 413 transitions, 5270 flow [2022-01-19 15:00:29,032 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5270, PETRI_PLACES=171, PETRI_TRANSITIONS=413} [2022-01-19 15:00:29,032 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 68 predicate places. [2022-01-19 15:00:29,032 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 413 transitions, 5270 flow [2022-01-19 15:00:29,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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) [2022-01-19 15:00:29,033 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:00:29,033 INFO L254 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] [2022-01-19 15:00:29,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 15:00:29,033 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 15:00:29,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:00:29,033 INFO L85 PathProgramCache]: Analyzing trace with hash 393902587, now seen corresponding path program 2 times [2022-01-19 15:00:29,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:00:29,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694609136] [2022-01-19 15:00:29,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:00:29,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:00:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:00:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:29,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:00:29,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694609136] [2022-01-19 15:00:29,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694609136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:00:29,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:00:29,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 15:00:29,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342336967] [2022-01-19 15:00:29,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:00:29,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 15:00:29,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:00:29,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 15:00:29,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 15:00:29,113 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2022-01-19 15:00:29,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 413 transitions, 5270 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 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) [2022-01-19 15:00:29,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:00:29,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2022-01-19 15:00:29,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:00:31,251 INFO L129 PetriNetUnfolder]: 7953/14769 cut-off events. [2022-01-19 15:00:31,251 INFO L130 PetriNetUnfolder]: For 180952/181184 co-relation queries the response was YES. [2022-01-19 15:00:31,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84549 conditions, 14769 events. 7953/14769 cut-off events. For 180952/181184 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 124086 event pairs, 2073 based on Foata normal form. 27/13880 useless extension candidates. Maximal degree in co-relation 72609. Up to 9122 conditions per place. [2022-01-19 15:00:31,390 INFO L132 encePairwiseOnDemand]: 104/115 looper letters, 369 selfloop transitions, 99 changer transitions 9/557 dead transitions. [2022-01-19 15:00:31,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 557 transitions, 8362 flow [2022-01-19 15:00:31,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 15:00:31,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 15:00:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2022-01-19 15:00:31,392 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-01-19 15:00:31,392 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 575 transitions. [2022-01-19 15:00:31,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 575 transitions. [2022-01-19 15:00:31,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:00:31,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 575 transitions. [2022-01-19 15:00:31,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 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) [2022-01-19 15:00:31,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 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) [2022-01-19 15:00:31,394 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 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) [2022-01-19 15:00:31,394 INFO L186 Difference]: Start difference. First operand has 171 places, 413 transitions, 5270 flow. Second operand 6 states and 575 transitions. [2022-01-19 15:00:31,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 557 transitions, 8362 flow [2022-01-19 15:00:32,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 557 transitions, 8026 flow, removed 168 selfloop flow, removed 0 redundant places. [2022-01-19 15:00:32,119 INFO L242 Difference]: Finished difference. Result has 180 places, 443 transitions, 5809 flow [2022-01-19 15:00:32,119 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=5066, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5809, PETRI_PLACES=180, PETRI_TRANSITIONS=443} [2022-01-19 15:00:32,120 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 77 predicate places. [2022-01-19 15:00:32,120 INFO L470 AbstractCegarLoop]: Abstraction has has 180 places, 443 transitions, 5809 flow [2022-01-19 15:00:32,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 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) [2022-01-19 15:00:32,120 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:00:32,120 INFO L254 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] [2022-01-19 15:00:32,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 15:00:32,121 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 15:00:32,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:00:32,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1596044119, now seen corresponding path program 3 times [2022-01-19 15:00:32,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:00:32,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537906319] [2022-01-19 15:00:32,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:00:32,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:00:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:00:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:32,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:00:32,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537906319] [2022-01-19 15:00:32,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537906319] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 15:00:32,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469521970] [2022-01-19 15:00:32,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 15:00:32,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:00:32,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:00:32,295 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) [2022-01-19 15:00:32,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 15:00:32,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-19 15:00:32,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 15:00:32,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 15:00:32,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:00:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:32,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 15:00:32,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469521970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:00:32,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 15:00:32,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2022-01-19 15:00:32,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190318192] [2022-01-19 15:00:32,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:00:32,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:00:32,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:00:32,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:00:32,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-01-19 15:00:32,711 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 115 [2022-01-19 15:00:32,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 443 transitions, 5809 flow. Second operand has 10 states, 10 states have (on average 74.3) internal successors, (743), 10 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) [2022-01-19 15:00:32,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:00:32,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 115 [2022-01-19 15:00:32,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:00:35,707 INFO L129 PetriNetUnfolder]: 10546/18925 cut-off events. [2022-01-19 15:00:35,707 INFO L130 PetriNetUnfolder]: For 257457/257799 co-relation queries the response was YES. [2022-01-19 15:00:35,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115658 conditions, 18925 events. 10546/18925 cut-off events. For 257457/257799 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 159996 event pairs, 2288 based on Foata normal form. 576/19283 useless extension candidates. Maximal degree in co-relation 101677. Up to 10517 conditions per place. [2022-01-19 15:00:35,915 INFO L132 encePairwiseOnDemand]: 101/115 looper letters, 607 selfloop transitions, 107 changer transitions 3/785 dead transitions. [2022-01-19 15:00:35,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 785 transitions, 12170 flow [2022-01-19 15:00:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 15:00:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 15:00:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1032 transitions. [2022-01-19 15:00:35,922 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6903010033444816 [2022-01-19 15:00:35,922 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1032 transitions. [2022-01-19 15:00:35,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1032 transitions. [2022-01-19 15:00:35,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:00:35,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1032 transitions. [2022-01-19 15:00:35,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.38461538461539) internal successors, (1032), 13 states have internal predecessors, (1032), 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) [2022-01-19 15:00:35,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:35,929 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:35,929 INFO L186 Difference]: Start difference. First operand has 180 places, 443 transitions, 5809 flow. Second operand 13 states and 1032 transitions. [2022-01-19 15:00:35,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 785 transitions, 12170 flow [2022-01-19 15:00:36,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 785 transitions, 11943 flow, removed 26 selfloop flow, removed 1 redundant places. [2022-01-19 15:00:36,840 INFO L242 Difference]: Finished difference. Result has 198 places, 511 transitions, 6996 flow [2022-01-19 15:00:36,840 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=5517, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6996, PETRI_PLACES=198, PETRI_TRANSITIONS=511} [2022-01-19 15:00:36,841 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 95 predicate places. [2022-01-19 15:00:36,841 INFO L470 AbstractCegarLoop]: Abstraction has has 198 places, 511 transitions, 6996 flow [2022-01-19 15:00:36,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.3) internal successors, (743), 10 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) [2022-01-19 15:00:36,841 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:00:36,841 INFO L254 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] [2022-01-19 15:00:36,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 15:00:37,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-19 15:00:37,042 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 15:00:37,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:00:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash 209813985, now seen corresponding path program 4 times [2022-01-19 15:00:37,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:00:37,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061082784] [2022-01-19 15:00:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:00:37,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:00:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:00:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:38,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:00:38,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061082784] [2022-01-19 15:00:38,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061082784] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 15:00:38,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882305805] [2022-01-19 15:00:38,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 15:00:38,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:00:38,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:00:38,859 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) [2022-01-19 15:00:38,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 15:00:39,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 15:00:39,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 15:00:39,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-19 15:00:39,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2022-01-19 15:14:44,781 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-19 15:14:44,783 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 15:14:44,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 15:14:44,816 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 15:14:44,816 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 15:14:44,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:14:44,991 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 12ms.. [2022-01-19 15:14:44,992 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 15:14:44,992 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 15:14:44,992 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 15:14:44,994 INFO L732 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1] [2022-01-19 15:14:44,996 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 15:14:44,996 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 15:14:44,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 03:14:44 BasicIcfg [2022-01-19 15:14:44,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 15:14:44,999 INFO L158 Benchmark]: Toolchain (without parser) took 863807.02ms. Allocated memory was 404.8MB in the beginning and 4.2GB in the end (delta: 3.8GB). Free memory was 351.4MB in the beginning and 2.7GB in the end (delta: -2.3GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. [2022-01-19 15:14:45,000 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 404.8MB. Free memory was 367.7MB in the beginning and 367.6MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 15:14:45,000 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.13ms. Allocated memory was 404.8MB in the beginning and 497.0MB in the end (delta: 92.3MB). Free memory was 351.2MB in the beginning and 469.1MB in the end (delta: -117.9MB). Peak memory consumption was 10.6MB. Max. memory is 16.0GB. [2022-01-19 15:14:45,000 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.07ms. Allocated memory is still 497.0MB. Free memory was 469.1MB in the beginning and 467.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 15:14:45,000 INFO L158 Benchmark]: Boogie Preprocessor took 33.53ms. Allocated memory is still 497.0MB. Free memory was 467.5MB in the beginning and 466.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 15:14:45,000 INFO L158 Benchmark]: RCFGBuilder took 363.70ms. Allocated memory is still 497.0MB. Free memory was 466.5MB in the beginning and 447.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-19 15:14:45,001 INFO L158 Benchmark]: TraceAbstraction took 863104.61ms. Allocated memory was 497.0MB in the beginning and 4.2GB in the end (delta: 3.7GB). Free memory was 446.6MB in the beginning and 2.7GB in the end (delta: -2.2GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. [2022-01-19 15:14:45,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 404.8MB. Free memory was 367.7MB in the beginning and 367.6MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 259.13ms. Allocated memory was 404.8MB in the beginning and 497.0MB in the end (delta: 92.3MB). Free memory was 351.2MB in the beginning and 469.1MB in the end (delta: -117.9MB). Peak memory consumption was 10.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.07ms. Allocated memory is still 497.0MB. Free memory was 469.1MB in the beginning and 467.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.53ms. Allocated memory is still 497.0MB. Free memory was 467.5MB in the beginning and 466.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 363.70ms. Allocated memory is still 497.0MB. Free memory was 466.5MB in the beginning and 447.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 863104.61ms. Allocated memory was 497.0MB in the beginning and 4.2GB in the end (delta: 3.7GB). Free memory was 446.6MB in the beginning and 2.7GB in the end (delta: -2.2GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 12ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 12ms.. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 12ms.. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 12ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 133 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 863.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 725 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 725 mSDsluCounter, 447 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 642 mSDsCounter, 129 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1480 IncrementalHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 129 mSolverCounterUnsat, 133 mSDtfsCounter, 1480 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 367 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6996occurred in iteration=7, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 798 NumberOfCodeBlocks, 798 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 875 ConstructedInterpolants, 0 QuantifiedInterpolants, 4680 SizeOfPredicates, 23 NumberOfNonLiveVariables, 439 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 9/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown