/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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:39:53,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:39:53,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:39:53,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 05:39:53,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 05:39:53,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 05:39:53,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 05:39:53,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 05:39:53,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 05:39:53,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 05:39:53,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 05:39:53,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 05:39:53,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:39:53,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:39:53,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:39:53,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:39:53,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:39:53,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:39:53,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:39:53,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:39:53,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:39:53,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:39:53,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:39:53,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:39:53,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 05:39:53,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 05:39:53,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 05:39:53,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 05:39:53,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 05:39:53,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 05:39:53,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 05:39:53,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 05:39:53,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 05:39:53,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 05:39:53,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 05:39:53,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 05:39:53,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 05:39:53,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 05:39:53,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:39:53,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:39:53,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:39:53,178 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-VariableLbe.epf [2023-01-28 05:39:53,200 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:39:53,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:39:53,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:39:53,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:39:53,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:39:53,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:39:53,201 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:39:53,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:39:53,202 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:39:53,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:39:53,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:39:53,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:39:53,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:39:53,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:39:53,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:39:53,203 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:39:53,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:39:53,203 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:39:53,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:39:53,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:39:53,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:39:53,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:39:53,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:39:53,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:39:53,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:39:53,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:39:53,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:39:53,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:39:53,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:39:53,210 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:39:53,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:39:53,210 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:39:53,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:39:53,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:39:53,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:39:53,460 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:39:53,461 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:39:53,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-01-28 05:39:54,576 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:39:54,763 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:39:54,764 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-01-28 05:39:54,769 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae400509c/5550c7a462444004a3d92f72047b8f9f/FLAG7fec0de9b [2023-01-28 05:39:54,780 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae400509c/5550c7a462444004a3d92f72047b8f9f [2023-01-28 05:39:54,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:39:54,783 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:39:54,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:39:54,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:39:54,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:39:54,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:39:54" (1/1) ... [2023-01-28 05:39:54,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14cf5e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:54, skipping insertion in model container [2023-01-28 05:39:54,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:39:54" (1/1) ... [2023-01-28 05:39:54,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:39:54,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:39:54,986 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c[3373,3386] [2023-01-28 05:39:54,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:39:55,003 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:39:55,038 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c[3373,3386] [2023-01-28 05:39:55,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:39:55,048 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:39:55,049 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:39:55,054 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:39:55,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:55 WrapperNode [2023-01-28 05:39:55,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:39:55,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:39:55,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:39:55,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:39:55,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:55" (1/1) ... [2023-01-28 05:39:55,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:55" (1/1) ... [2023-01-28 05:39:55,103 INFO L138 Inliner]: procedures = 24, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2023-01-28 05:39:55,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:39:55,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:39:55,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:39:55,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:39:55,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:55" (1/1) ... [2023-01-28 05:39:55,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:55" (1/1) ... [2023-01-28 05:39:55,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:55" (1/1) ... [2023-01-28 05:39:55,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:55" (1/1) ... [2023-01-28 05:39:55,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:55" (1/1) ... [2023-01-28 05:39:55,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:55" (1/1) ... [2023-01-28 05:39:55,137 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:55" (1/1) ... [2023-01-28 05:39:55,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:55" (1/1) ... [2023-01-28 05:39:55,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:39:55,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:39:55,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:39:55,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:39:55,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:55" (1/1) ... [2023-01-28 05:39:55,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:39:55,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:39:55,175 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) [2023-01-28 05:39:55,176 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 [2023-01-28 05:39:55,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:39:55,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 05:39:55,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 05:39:55,208 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 05:39:55,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 05:39:55,208 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 05:39:55,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 05:39:55,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 05:39:55,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 05:39:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:39:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:39:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:39:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 05:39:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 05:39:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:39:55,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:39:55,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:39:55,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:39:55,214 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 05:39:55,287 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:39:55,288 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:39:55,491 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:39:55,568 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:39:55,568 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 05:39:55,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:39:55 BoogieIcfgContainer [2023-01-28 05:39:55,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:39:55,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:39:55,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:39:55,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:39:55,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:39:54" (1/3) ... [2023-01-28 05:39:55,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5462cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:39:55, skipping insertion in model container [2023-01-28 05:39:55,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:55" (2/3) ... [2023-01-28 05:39:55,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5462cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:39:55, skipping insertion in model container [2023-01-28 05:39:55,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:39:55" (3/3) ... [2023-01-28 05:39:55,585 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2023-01-28 05:39:55,599 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:39:55,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 05:39:55,600 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:39:55,669 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 05:39:55,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 133 transitions, 298 flow [2023-01-28 05:39:55,772 INFO L130 PetriNetUnfolder]: 10/129 cut-off events. [2023-01-28 05:39:55,772 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 05:39:55,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 129 events. 10/129 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-01-28 05:39:55,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 133 transitions, 298 flow [2023-01-28 05:39:55,785 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 117 transitions, 258 flow [2023-01-28 05:39:55,788 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:39:55,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 117 transitions, 258 flow [2023-01-28 05:39:55,800 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 117 transitions, 258 flow [2023-01-28 05:39:55,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 117 transitions, 258 flow [2023-01-28 05:39:55,849 INFO L130 PetriNetUnfolder]: 10/117 cut-off events. [2023-01-28 05:39:55,850 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 05:39:55,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 117 events. 10/117 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-01-28 05:39:55,852 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-01-28 05:39:59,101 INFO L134 LiptonReduction]: Checked pairs total: 3486 [2023-01-28 05:39:59,101 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-01-28 05:39:59,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:39:59,122 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@784da75, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:39:59,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 05:39:59,130 INFO L130 PetriNetUnfolder]: 4/32 cut-off events. [2023-01-28 05:39:59,130 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 05:39:59,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:59,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:59,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:39:59,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:59,136 INFO L85 PathProgramCache]: Analyzing trace with hash -964385068, now seen corresponding path program 1 times [2023-01-28 05:39:59,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:59,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416464632] [2023-01-28 05:39:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:59,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:59,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:59,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416464632] [2023-01-28 05:39:59,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416464632] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:59,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:59,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 05:39:59,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064988422] [2023-01-28 05:39:59,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:59,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:39:59,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:59,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:39:59,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:39:59,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 228 [2023-01-28 05:39:59,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-01-28 05:39:59,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:59,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 228 [2023-01-28 05:39:59,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:40:00,087 INFO L130 PetriNetUnfolder]: 1537/2184 cut-off events. [2023-01-28 05:40:00,087 INFO L131 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2023-01-28 05:40:00,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4286 conditions, 2184 events. 1537/2184 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9237 event pairs, 141 based on Foata normal form. 1/1356 useless extension candidates. Maximal degree in co-relation 3271. Up to 1733 conditions per place. [2023-01-28 05:40:00,110 INFO L137 encePairwiseOnDemand]: 222/228 looper letters, 41 selfloop transitions, 5 changer transitions 1/55 dead transitions. [2023-01-28 05:40:00,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 249 flow [2023-01-28 05:40:00,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:40:00,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:40:00,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-01-28 05:40:00,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2023-01-28 05:40:00,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-01-28 05:40:00,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-01-28 05:40:00,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:40:00,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-01-28 05:40:00,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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) [2023-01-28 05:40:00,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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) [2023-01-28 05:40:00,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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) [2023-01-28 05:40:00,147 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 90 flow. Second operand 3 states and 372 transitions. [2023-01-28 05:40:00,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 249 flow [2023-01-28 05:40:00,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 55 transitions, 219 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 05:40:00,156 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 107 flow [2023-01-28 05:40:00,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-01-28 05:40:00,162 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-01-28 05:40:00,162 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 107 flow [2023-01-28 05:40:00,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-01-28 05:40:00,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:40:00,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:40:00,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 05:40:00,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:40:00,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:40:00,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1878883062, now seen corresponding path program 1 times [2023-01-28 05:40:00,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:40:00,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810501260] [2023-01-28 05:40:00,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:40:00,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:40:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:40:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:40:00,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:40:00,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810501260] [2023-01-28 05:40:00,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810501260] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:40:00,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:40:00,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:40:00,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261287201] [2023-01-28 05:40:00,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:40:00,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:40:00,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:40:00,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:40:00,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:40:00,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 228 [2023-01-28 05:40:00,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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) [2023-01-28 05:40:00,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:40:00,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 228 [2023-01-28 05:40:00,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:40:01,050 INFO L130 PetriNetUnfolder]: 3101/4276 cut-off events. [2023-01-28 05:40:01,051 INFO L131 PetriNetUnfolder]: For 1157/1169 co-relation queries the response was YES. [2023-01-28 05:40:01,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10117 conditions, 4276 events. 3101/4276 cut-off events. For 1157/1169 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 20379 event pairs, 700 based on Foata normal form. 40/4192 useless extension candidates. Maximal degree in co-relation 2568. Up to 1880 conditions per place. [2023-01-28 05:40:01,080 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 88 selfloop transitions, 9 changer transitions 0/101 dead transitions. [2023-01-28 05:40:01,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 101 transitions, 490 flow [2023-01-28 05:40:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:40:01,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:40:01,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 601 transitions. [2023-01-28 05:40:01,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271929824561403 [2023-01-28 05:40:01,083 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 601 transitions. [2023-01-28 05:40:01,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 601 transitions. [2023-01-28 05:40:01,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:40:01,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 601 transitions. [2023-01-28 05:40:01,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.2) internal successors, (601), 5 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) [2023-01-28 05:40:01,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 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) [2023-01-28 05:40:01,089 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 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) [2023-01-28 05:40:01,089 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 107 flow. Second operand 5 states and 601 transitions. [2023-01-28 05:40:01,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 101 transitions, 490 flow [2023-01-28 05:40:01,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 101 transitions, 477 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:40:01,092 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 166 flow [2023-01-28 05:40:01,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-01-28 05:40:01,093 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-01-28 05:40:01,093 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 166 flow [2023-01-28 05:40:01,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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) [2023-01-28 05:40:01,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:40:01,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:40:01,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 05:40:01,094 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:40:01,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:40:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1409819620, now seen corresponding path program 2 times [2023-01-28 05:40:01,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:40:01,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504219220] [2023-01-28 05:40:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:40:01,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:40:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:40:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:40:01,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:40:01,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504219220] [2023-01-28 05:40:01,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504219220] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:40:01,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739647897] [2023-01-28 05:40:01,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:40:01,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:40:01,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:40:01,381 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) [2023-01-28 05:40:01,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 05:40:01,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:40:01,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:40:01,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 05:40:01,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:40:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:40:01,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:40:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:40:02,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739647897] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:40:02,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:40:02,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-01-28 05:40:02,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914348288] [2023-01-28 05:40:02,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:40:02,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:40:02,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:40:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:40:02,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:40:02,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-01-28 05:40:02,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 166 flow. Second operand has 14 states, 14 states have (on average 94.57142857142857) internal successors, (1324), 14 states have internal predecessors, (1324), 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) [2023-01-28 05:40:02,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:40:02,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-01-28 05:40:02,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:40:05,309 INFO L130 PetriNetUnfolder]: 18233/24516 cut-off events. [2023-01-28 05:40:05,310 INFO L131 PetriNetUnfolder]: For 18287/18287 co-relation queries the response was YES. [2023-01-28 05:40:05,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66866 conditions, 24516 events. 18233/24516 cut-off events. For 18287/18287 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 128006 event pairs, 324 based on Foata normal form. 998/25514 useless extension candidates. Maximal degree in co-relation 37667. Up to 6829 conditions per place. [2023-01-28 05:40:05,442 INFO L137 encePairwiseOnDemand]: 214/228 looper letters, 379 selfloop transitions, 127 changer transitions 7/513 dead transitions. [2023-01-28 05:40:05,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 513 transitions, 2955 flow [2023-01-28 05:40:05,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 05:40:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 05:40:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2521 transitions. [2023-01-28 05:40:05,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48073989321128907 [2023-01-28 05:40:05,449 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2521 transitions. [2023-01-28 05:40:05,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2521 transitions. [2023-01-28 05:40:05,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:40:05,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2521 transitions. [2023-01-28 05:40:05,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 109.6086956521739) internal successors, (2521), 23 states have internal predecessors, (2521), 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) [2023-01-28 05:40:05,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 228.0) internal successors, (5472), 24 states have internal predecessors, (5472), 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) [2023-01-28 05:40:05,464 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 228.0) internal successors, (5472), 24 states have internal predecessors, (5472), 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) [2023-01-28 05:40:05,464 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 166 flow. Second operand 23 states and 2521 transitions. [2023-01-28 05:40:05,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 513 transitions, 2955 flow [2023-01-28 05:40:05,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 513 transitions, 2879 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:40:05,493 INFO L231 Difference]: Finished difference. Result has 82 places, 203 transitions, 1587 flow [2023-01-28 05:40:05,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1587, PETRI_PLACES=82, PETRI_TRANSITIONS=203} [2023-01-28 05:40:05,494 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2023-01-28 05:40:05,494 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 203 transitions, 1587 flow [2023-01-28 05:40:05,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.57142857142857) internal successors, (1324), 14 states have internal predecessors, (1324), 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) [2023-01-28 05:40:05,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:40:05,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:40:05,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 05:40:05,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:40:05,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:40:05,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:40:05,709 INFO L85 PathProgramCache]: Analyzing trace with hash 86619449, now seen corresponding path program 1 times [2023-01-28 05:40:05,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:40:05,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140605231] [2023-01-28 05:40:05,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:40:05,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:40:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:40:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:40:06,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:40:06,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140605231] [2023-01-28 05:40:06,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140605231] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:40:06,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:40:06,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:40:06,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926933225] [2023-01-28 05:40:06,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:40:06,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 05:40:06,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:40:06,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 05:40:06,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 05:40:06,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 228 [2023-01-28 05:40:06,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 203 transitions, 1587 flow. Second operand has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 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) [2023-01-28 05:40:06,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:40:06,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 228 [2023-01-28 05:40:06,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:40:09,534 INFO L130 PetriNetUnfolder]: 23907/32830 cut-off events. [2023-01-28 05:40:09,534 INFO L131 PetriNetUnfolder]: For 149860/149860 co-relation queries the response was YES. [2023-01-28 05:40:09,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141949 conditions, 32830 events. 23907/32830 cut-off events. For 149860/149860 co-relation queries the response was YES. Maximal size of possible extension queue 1183. Compared 186844 event pairs, 3428 based on Foata normal form. 304/33134 useless extension candidates. Maximal degree in co-relation 138821. Up to 12837 conditions per place. [2023-01-28 05:40:09,783 INFO L137 encePairwiseOnDemand]: 217/228 looper letters, 408 selfloop transitions, 193 changer transitions 0/601 dead transitions. [2023-01-28 05:40:09,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 601 transitions, 5720 flow [2023-01-28 05:40:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:40:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:40:09,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 822 transitions. [2023-01-28 05:40:09,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150375939849624 [2023-01-28 05:40:09,786 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 822 transitions. [2023-01-28 05:40:09,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 822 transitions. [2023-01-28 05:40:09,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:40:09,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 822 transitions. [2023-01-28 05:40:09,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.42857142857143) internal successors, (822), 7 states have internal predecessors, (822), 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) [2023-01-28 05:40:09,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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) [2023-01-28 05:40:09,791 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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) [2023-01-28 05:40:09,792 INFO L175 Difference]: Start difference. First operand has 82 places, 203 transitions, 1587 flow. Second operand 7 states and 822 transitions. [2023-01-28 05:40:09,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 601 transitions, 5720 flow [2023-01-28 05:40:10,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 601 transitions, 5165 flow, removed 262 selfloop flow, removed 1 redundant places. [2023-01-28 05:40:10,518 INFO L231 Difference]: Finished difference. Result has 92 places, 371 transitions, 3312 flow [2023-01-28 05:40:10,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3312, PETRI_PLACES=92, PETRI_TRANSITIONS=371} [2023-01-28 05:40:10,519 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2023-01-28 05:40:10,519 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 371 transitions, 3312 flow [2023-01-28 05:40:10,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 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) [2023-01-28 05:40:10,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:40:10,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:40:10,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 05:40:10,520 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:40:10,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:40:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1357728449, now seen corresponding path program 2 times [2023-01-28 05:40:10,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:40:10,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477776251] [2023-01-28 05:40:10,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:40:10,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:40:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:40:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:40:10,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:40:10,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477776251] [2023-01-28 05:40:10,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477776251] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:40:10,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:40:10,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:40:10,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957033660] [2023-01-28 05:40:10,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:40:10,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 05:40:10,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:40:10,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 05:40:10,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 05:40:10,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 228 [2023-01-28 05:40:10,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 371 transitions, 3312 flow. Second operand has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 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) [2023-01-28 05:40:10,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:40:10,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 228 [2023-01-28 05:40:10,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:40:14,914 INFO L130 PetriNetUnfolder]: 26984/37993 cut-off events. [2023-01-28 05:40:14,914 INFO L131 PetriNetUnfolder]: For 214084/214084 co-relation queries the response was YES. [2023-01-28 05:40:15,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182845 conditions, 37993 events. 26984/37993 cut-off events. For 214084/214084 co-relation queries the response was YES. Maximal size of possible extension queue 1424. Compared 233161 event pairs, 3256 based on Foata normal form. 396/38389 useless extension candidates. Maximal degree in co-relation 178683. Up to 17481 conditions per place. [2023-01-28 05:40:15,243 INFO L137 encePairwiseOnDemand]: 220/228 looper letters, 543 selfloop transitions, 262 changer transitions 4/809 dead transitions. [2023-01-28 05:40:15,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 809 transitions, 8558 flow [2023-01-28 05:40:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 05:40:15,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 05:40:15,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 928 transitions. [2023-01-28 05:40:15,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2023-01-28 05:40:15,247 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 928 transitions. [2023-01-28 05:40:15,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 928 transitions. [2023-01-28 05:40:15,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:40:15,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 928 transitions. [2023-01-28 05:40:15,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2023-01-28 05:40:15,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 228.0) internal successors, (2052), 9 states have internal predecessors, (2052), 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) [2023-01-28 05:40:15,259 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 228.0) internal successors, (2052), 9 states have internal predecessors, (2052), 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) [2023-01-28 05:40:15,260 INFO L175 Difference]: Start difference. First operand has 92 places, 371 transitions, 3312 flow. Second operand 8 states and 928 transitions. [2023-01-28 05:40:15,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 809 transitions, 8558 flow [2023-01-28 05:40:16,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 809 transitions, 8417 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:40:16,442 INFO L231 Difference]: Finished difference. Result has 104 places, 476 transitions, 5098 flow [2023-01-28 05:40:16,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=3229, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5098, PETRI_PLACES=104, PETRI_TRANSITIONS=476} [2023-01-28 05:40:16,444 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2023-01-28 05:40:16,444 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 476 transitions, 5098 flow [2023-01-28 05:40:16,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 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) [2023-01-28 05:40:16,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:40:16,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:40:16,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 05:40:16,445 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:40:16,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:40:16,445 INFO L85 PathProgramCache]: Analyzing trace with hash -58356105, now seen corresponding path program 3 times [2023-01-28 05:40:16,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:40:16,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537948869] [2023-01-28 05:40:16,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:40:16,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:40:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:40:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:40:16,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:40:16,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537948869] [2023-01-28 05:40:16,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537948869] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:40:16,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430519056] [2023-01-28 05:40:16,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:40:16,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:40:16,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:40:16,797 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) [2023-01-28 05:40:16,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 05:40:16,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 05:40:16,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:40:16,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 05:40:16,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:40:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:40:17,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:40:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:40:17,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430519056] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:40:17,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:40:17,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-01-28 05:40:17,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845382936] [2023-01-28 05:40:17,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:40:17,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 05:40:17,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:40:17,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 05:40:17,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-01-28 05:40:17,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-01-28 05:40:17,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 476 transitions, 5098 flow. Second operand has 15 states, 15 states have (on average 95.13333333333334) internal successors, (1427), 15 states have internal predecessors, (1427), 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) [2023-01-28 05:40:17,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:40:17,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-01-28 05:40:17,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:40:20,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 05:40:22,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 05:40:24,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 05:40:27,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 05:40:29,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 05:40:31,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 05:40:34,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 05:40:36,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 05:40:38,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 05:40:40,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 05:40:50,330 INFO L130 PetriNetUnfolder]: 59752/85123 cut-off events. [2023-01-28 05:40:50,330 INFO L131 PetriNetUnfolder]: For 685691/685691 co-relation queries the response was YES. [2023-01-28 05:40:50,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457734 conditions, 85123 events. 59752/85123 cut-off events. For 685691/685691 co-relation queries the response was YES. Maximal size of possible extension queue 3161. Compared 594202 event pairs, 2982 based on Foata normal form. 2889/88012 useless extension candidates. Maximal degree in co-relation 446270. Up to 24821 conditions per place. [2023-01-28 05:40:51,189 INFO L137 encePairwiseOnDemand]: 214/228 looper letters, 804 selfloop transitions, 1735 changer transitions 12/2551 dead transitions. [2023-01-28 05:40:51,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 2551 transitions, 30699 flow [2023-01-28 05:40:51,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-01-28 05:40:51,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-01-28 05:40:51,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3581 transitions. [2023-01-28 05:40:51,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47594364699627856 [2023-01-28 05:40:51,198 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3581 transitions. [2023-01-28 05:40:51,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3581 transitions. [2023-01-28 05:40:51,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:40:51,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3581 transitions. [2023-01-28 05:40:51,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 108.51515151515152) internal successors, (3581), 33 states have internal predecessors, (3581), 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) [2023-01-28 05:40:51,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 228.0) internal successors, (7752), 34 states have internal predecessors, (7752), 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) [2023-01-28 05:40:51,219 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 228.0) internal successors, (7752), 34 states have internal predecessors, (7752), 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) [2023-01-28 05:40:51,219 INFO L175 Difference]: Start difference. First operand has 104 places, 476 transitions, 5098 flow. Second operand 33 states and 3581 transitions. [2023-01-28 05:40:51,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 2551 transitions, 30699 flow [2023-01-28 05:41:01,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 2551 transitions, 29902 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-01-28 05:41:01,986 INFO L231 Difference]: Finished difference. Result has 160 places, 1910 transitions, 27290 flow [2023-01-28 05:41:01,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=4917, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=373, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=27290, PETRI_PLACES=160, PETRI_TRANSITIONS=1910} [2023-01-28 05:41:01,988 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2023-01-28 05:41:01,988 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 1910 transitions, 27290 flow [2023-01-28 05:41:01,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 95.13333333333334) internal successors, (1427), 15 states have internal predecessors, (1427), 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) [2023-01-28 05:41:01,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:41:01,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:41:01,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 05:41:02,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-28 05:41:02,194 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:41:02,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:41:02,194 INFO L85 PathProgramCache]: Analyzing trace with hash 790221684, now seen corresponding path program 3 times [2023-01-28 05:41:02,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:41:02,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930734019] [2023-01-28 05:41:02,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:41:02,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:41:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:41:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:41:02,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:41:02,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930734019] [2023-01-28 05:41:02,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930734019] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:41:02,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:41:02,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 05:41:02,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127673375] [2023-01-28 05:41:02,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:41:02,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 05:41:02,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:41:02,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 05:41:02,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 05:41:02,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 228 [2023-01-28 05:41:02,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 1910 transitions, 27290 flow. Second operand has 7 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 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) [2023-01-28 05:41:02,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:41:02,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 228 [2023-01-28 05:41:02,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:41:37,408 INFO L130 PetriNetUnfolder]: 95108/137117 cut-off events. [2023-01-28 05:41:37,408 INFO L131 PetriNetUnfolder]: For 2601715/2601715 co-relation queries the response was YES. [2023-01-28 05:41:38,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904547 conditions, 137117 events. 95108/137117 cut-off events. For 2601715/2601715 co-relation queries the response was YES. Maximal size of possible extension queue 5265. Compared 1032562 event pairs, 14393 based on Foata normal form. 692/137809 useless extension candidates. Maximal degree in co-relation 898360. Up to 33544 conditions per place. [2023-01-28 05:41:39,378 INFO L137 encePairwiseOnDemand]: 217/228 looper letters, 2200 selfloop transitions, 1841 changer transitions 0/4041 dead transitions. [2023-01-28 05:41:39,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 4041 transitions, 65628 flow [2023-01-28 05:41:39,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 05:41:39,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 05:41:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1267 transitions. [2023-01-28 05:41:39,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50518341307815 [2023-01-28 05:41:39,382 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1267 transitions. [2023-01-28 05:41:39,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1267 transitions. [2023-01-28 05:41:39,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:41:39,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1267 transitions. [2023-01-28 05:41:39,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.18181818181819) internal successors, (1267), 11 states have internal predecessors, (1267), 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) [2023-01-28 05:41:39,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 228.0) internal successors, (2736), 12 states have internal predecessors, (2736), 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) [2023-01-28 05:41:39,389 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 228.0) internal successors, (2736), 12 states have internal predecessors, (2736), 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) [2023-01-28 05:41:39,389 INFO L175 Difference]: Start difference. First operand has 160 places, 1910 transitions, 27290 flow. Second operand 11 states and 1267 transitions. [2023-01-28 05:41:39,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 4041 transitions, 65628 flow [2023-01-28 05:43:10,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 4041 transitions, 64116 flow, removed 756 selfloop flow, removed 0 redundant places. [2023-01-28 05:43:10,318 INFO L231 Difference]: Finished difference. Result has 178 places, 3330 transitions, 56711 flow [2023-01-28 05:43:10,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=26670, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1910, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=730, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=56711, PETRI_PLACES=178, PETRI_TRANSITIONS=3330} [2023-01-28 05:43:10,320 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 136 predicate places. [2023-01-28 05:43:10,320 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 3330 transitions, 56711 flow [2023-01-28 05:43:10,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 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) [2023-01-28 05:43:10,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:43:10,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:43:10,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 05:43:10,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:43:10,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:43:10,321 INFO L85 PathProgramCache]: Analyzing trace with hash 464010053, now seen corresponding path program 1 times [2023-01-28 05:43:10,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:43:10,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311007535] [2023-01-28 05:43:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:43:10,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:43:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:43:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:43:10,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:43:10,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311007535] [2023-01-28 05:43:10,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311007535] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:43:10,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:43:10,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:43:10,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775897963] [2023-01-28 05:43:10,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:43:10,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:43:10,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:43:10,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:43:10,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:43:10,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 228 [2023-01-28 05:43:10,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 3330 transitions, 56711 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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) [2023-01-28 05:43:10,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:43:10,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 228 [2023-01-28 05:43:10,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:44:11,531 INFO L130 PetriNetUnfolder]: 93668/139966 cut-off events. [2023-01-28 05:44:11,531 INFO L131 PetriNetUnfolder]: For 3464153/3474517 co-relation queries the response was YES. [2023-01-28 05:44:12,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1024768 conditions, 139966 events. 93668/139966 cut-off events. For 3464153/3474517 co-relation queries the response was YES. Maximal size of possible extension queue 6429. Compared 1167822 event pairs, 12818 based on Foata normal form. 11190/150018 useless extension candidates. Maximal degree in co-relation 1018090. Up to 53358 conditions per place. [2023-01-28 05:44:14,061 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 2366 selfloop transitions, 1563 changer transitions 117/4123 dead transitions. [2023-01-28 05:44:14,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 4123 transitions, 76472 flow [2023-01-28 05:44:14,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:44:14,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:44:14,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 595 transitions. [2023-01-28 05:44:14,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5219298245614035 [2023-01-28 05:44:14,063 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 595 transitions. [2023-01-28 05:44:14,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 595 transitions. [2023-01-28 05:44:14,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:44:14,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 595 transitions. [2023-01-28 05:44:14,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2023-01-28 05:44:14,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 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) [2023-01-28 05:44:14,066 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 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) [2023-01-28 05:44:14,066 INFO L175 Difference]: Start difference. First operand has 178 places, 3330 transitions, 56711 flow. Second operand 5 states and 595 transitions. [2023-01-28 05:44:14,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 4123 transitions, 76472 flow [2023-01-28 05:47:36,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 4123 transitions, 76192 flow, removed 140 selfloop flow, removed 0 redundant places. [2023-01-28 05:47:36,857 INFO L231 Difference]: Finished difference. Result has 185 places, 3306 transitions, 61231 flow [2023-01-28 05:47:36,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=55605, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=61231, PETRI_PLACES=185, PETRI_TRANSITIONS=3306} [2023-01-28 05:47:36,862 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2023-01-28 05:47:36,863 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 3306 transitions, 61231 flow [2023-01-28 05:47:36,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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) [2023-01-28 05:47:36,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:47:36,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:47:36,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 05:47:36,864 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:47:36,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:47:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1599797733, now seen corresponding path program 2 times [2023-01-28 05:47:36,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:47:36,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351655782] [2023-01-28 05:47:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:47:36,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:47:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:47:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:47:37,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:47:37,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351655782] [2023-01-28 05:47:37,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351655782] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:47:37,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:47:37,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:47:37,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525483159] [2023-01-28 05:47:37,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:47:37,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:47:37,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:47:37,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:47:37,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:47:37,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 228 [2023-01-28 05:47:37,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 3306 transitions, 61231 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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) [2023-01-28 05:47:37,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:47:37,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 228 [2023-01-28 05:47:37,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:48:55,699 INFO L130 PetriNetUnfolder]: 108959/164710 cut-off events. [2023-01-28 05:48:55,700 INFO L131 PetriNetUnfolder]: For 4904776/4916772 co-relation queries the response was YES. [2023-01-28 05:48:57,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319725 conditions, 164710 events. 108959/164710 cut-off events. For 4904776/4916772 co-relation queries the response was YES. Maximal size of possible extension queue 7873. Compared 1428522 event pairs, 18437 based on Foata normal form. 14796/177833 useless extension candidates. Maximal degree in co-relation 1311680. Up to 70043 conditions per place. [2023-01-28 05:48:58,129 INFO L137 encePairwiseOnDemand]: 220/228 looper letters, 1976 selfloop transitions, 2661 changer transitions 88/4802 dead transitions. [2023-01-28 05:48:58,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 4802 transitions, 96969 flow [2023-01-28 05:48:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:48:58,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:48:58,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 711 transitions. [2023-01-28 05:48:58,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2023-01-28 05:48:58,131 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 711 transitions. [2023-01-28 05:48:58,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 711 transitions. [2023-01-28 05:48:58,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:48:58,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 711 transitions. [2023-01-28 05:48:58,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 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) [2023-01-28 05:48:58,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 228.0) internal successors, (1596), 7 states have internal predecessors, (1596), 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) [2023-01-28 05:48:58,135 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 228.0) internal successors, (1596), 7 states have internal predecessors, (1596), 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) [2023-01-28 05:48:58,135 INFO L175 Difference]: Start difference. First operand has 185 places, 3306 transitions, 61231 flow. Second operand 6 states and 711 transitions. [2023-01-28 05:48:58,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 4802 transitions, 96969 flow Received shutdown request... [2023-01-28 05:53:33,244 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 [2023-01-28 05:53:33,624 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 05:53:33,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 05:53:33,624 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 05:53:33,625 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-28 05:53:33,625 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 05:53:33,625 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 05:53:33,625 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-28 05:53:33,626 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1] [2023-01-28 05:53:33,628 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 05:53:33,628 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 05:53:33,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 05:53:33 BasicIcfg [2023-01-28 05:53:33,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 05:53:33,630 INFO L158 Benchmark]: Toolchain (without parser) took 818847.02ms. Allocated memory was 578.8MB in the beginning and 15.2GB in the end (delta: 14.6GB). Free memory was 530.5MB in the beginning and 12.1GB in the end (delta: -11.5GB). Peak memory consumption was 10.0GB. Max. memory is 16.0GB. [2023-01-28 05:53:33,630 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 396.4MB. Free memory is still 346.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:53:33,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.41ms. Allocated memory is still 578.8MB. Free memory was 530.2MB in the beginning and 518.6MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 05:53:33,631 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.91ms. Allocated memory is still 578.8MB. Free memory was 518.6MB in the beginning and 516.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:53:33,631 INFO L158 Benchmark]: Boogie Preprocessor took 35.54ms. Allocated memory is still 578.8MB. Free memory was 516.9MB in the beginning and 515.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:53:33,631 INFO L158 Benchmark]: RCFGBuilder took 420.38ms. Allocated memory is still 578.8MB. Free memory was 515.1MB in the beginning and 495.9MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 05:53:33,631 INFO L158 Benchmark]: TraceAbstraction took 818057.04ms. Allocated memory was 578.8MB in the beginning and 15.2GB in the end (delta: 14.6GB). Free memory was 495.3MB in the beginning and 12.1GB in the end (delta: -11.6GB). Peak memory consumption was 10.0GB. Max. memory is 16.0GB. [2023-01-28 05:53:33,633 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 396.4MB. Free memory is still 346.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 271.41ms. Allocated memory is still 578.8MB. Free memory was 530.2MB in the beginning and 518.6MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.91ms. Allocated memory is still 578.8MB. Free memory was 518.6MB in the beginning and 516.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.54ms. Allocated memory is still 578.8MB. Free memory was 516.9MB in the beginning and 515.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 420.38ms. Allocated memory is still 578.8MB. Free memory was 515.1MB in the beginning and 495.9MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 818057.04ms. Allocated memory was 578.8MB in the beginning and 15.2GB in the end (delta: 14.6GB). Free memory was 495.3MB in the beginning and 12.1GB in the end (delta: -11.6GB). Peak memory consumption was 10.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 120 PlacesBefore, 42 PlacesAfterwards, 117 TransitionsBefore, 33 TransitionsAfterwards, 1824 CoEnabledTransitionPairs, 7 FixpointIterations, 49 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 95 TotalNumberOfCompositions, 3486 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2642, independent: 2580, independent conditional: 0, independent unconditional: 2580, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 967, independent: 955, independent conditional: 0, independent unconditional: 955, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2642, independent: 1625, independent conditional: 0, independent unconditional: 1625, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 967, unknown conditional: 0, unknown unconditional: 967] , Statistics on independence cache: Total cache size (in pairs): 174, Positive cache size: 168, Positive conditional cache size: 0, Positive unconditional cache size: 168, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 156 locations, 5 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: 817.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 808.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 1193 SdHoareTripleChecker+Valid, 23.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1193 mSDsluCounter, 72 SdHoareTripleChecker+Invalid, 22.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 123 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4273 IncrementalHoareTripleChecker+Invalid, 4406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 123 mSolverCounterUnsat, 31 mSDtfsCounter, 4273 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 214 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61231occurred in iteration=8, InterpolantAutomatonStates: 95, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 295 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 336 ConstructedInterpolants, 11 QuantifiedInterpolants, 3076 SizeOfPredicates, 17 NumberOfNonLiveVariables, 430 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 6/12 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