/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:28:42,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:28:42,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:28:42,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:28:42,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:28:42,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:28:42,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:28:42,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:28:42,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:28:42,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:28:42,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:28:42,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:28:42,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:28:42,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:28:42,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:28:42,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:28:42,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:28:42,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:28:42,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:28:42,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:28:42,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:28:42,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:28:42,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:28:42,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:28:42,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 22:28:42,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 22:28:42,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 22:28:42,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 22:28:42,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 22:28:42,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 22:28:42,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:28:42,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:28:42,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:28:42,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:28:42,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:28:42,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:28:42,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:28:42,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:28:42,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:28:42,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:28:42,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:28:42,149 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 22:28:42,179 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:28:42,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:28:42,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:28:42,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:28:42,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:28:42,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:28:42,180 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:28:42,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:28:42,181 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:28:42,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:28:42,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:28:42,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:28:42,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:28:42,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:28:42,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:28:42,182 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:28:42,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:28:42,182 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:28:42,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:28:42,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:28:42,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:28:42,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:28:42,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:28:42,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:28:42,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:28:42,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:28:42,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:28:42,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:28:42,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:28:42,183 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:28:42,184 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:28:42,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:28:42,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:28:42,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:28:42,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:28:42,382 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:28:42,391 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:28:42,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-09-20 22:28:42,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e57c78a3/6980d37e633d4903848b399abe333a5f/FLAG2e1cbbb47 [2022-09-20 22:28:42,831 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:28:42,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-09-20 22:28:42,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e57c78a3/6980d37e633d4903848b399abe333a5f/FLAG2e1cbbb47 [2022-09-20 22:28:42,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e57c78a3/6980d37e633d4903848b399abe333a5f [2022-09-20 22:28:42,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:28:42,857 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:28:42,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:28:42,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:28:42,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:28:42,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:28:42" (1/1) ... [2022-09-20 22:28:42,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48378672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:28:42, skipping insertion in model container [2022-09-20 22:28:42,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:28:42" (1/1) ... [2022-09-20 22:28:42,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:28:42,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:28:43,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-09-20 22:28:43,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:28:43,253 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:28:43,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-09-20 22:28:43,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:28:43,330 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:28:43,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:28:43 WrapperNode [2022-09-20 22:28:43,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:28:43,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:28:43,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:28:43,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:28:43,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:28:43" (1/1) ... [2022-09-20 22:28:43,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:28:43" (1/1) ... [2022-09-20 22:28:43,378 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 192 [2022-09-20 22:28:43,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:28:43,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:28:43,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:28:43,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:28:43,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:28:43" (1/1) ... [2022-09-20 22:28:43,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:28:43" (1/1) ... [2022-09-20 22:28:43,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:28:43" (1/1) ... [2022-09-20 22:28:43,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:28:43" (1/1) ... [2022-09-20 22:28:43,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:28:43" (1/1) ... [2022-09-20 22:28:43,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:28:43" (1/1) ... [2022-09-20 22:28:43,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:28:43" (1/1) ... [2022-09-20 22:28:43,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:28:43,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:28:43,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:28:43,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:28:43,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:28:43" (1/1) ... [2022-09-20 22:28:43,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:28:43,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:28:43,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-20 22:28:43,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-20 22:28:43,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:28:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 22:28:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:28:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:28:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:28:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-09-20 22:28:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-09-20 22:28:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-09-20 22:28:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-09-20 22:28:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-09-20 22:28:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-09-20 22:28:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-09-20 22:28:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-09-20 22:28:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:28:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 22:28:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:28:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:28:43,509 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 22:28:43,654 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:28:43,655 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:28:44,041 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:28:44,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:28:44,299 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 22:28:44,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:28:44 BoogieIcfgContainer [2022-09-20 22:28:44,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:28:44,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:28:44,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:28:44,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:28:44,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:28:42" (1/3) ... [2022-09-20 22:28:44,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbec6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:28:44, skipping insertion in model container [2022-09-20 22:28:44,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:28:43" (2/3) ... [2022-09-20 22:28:44,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbec6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:28:44, skipping insertion in model container [2022-09-20 22:28:44,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:28:44" (3/3) ... [2022-09-20 22:28:44,306 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-09-20 22:28:44,318 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:28:44,318 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-09-20 22:28:44,318 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:28:44,361 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-20 22:28:44,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 296 flow [2022-09-20 22:28:44,434 INFO L130 PetriNetUnfolder]: 2/134 cut-off events. [2022-09-20 22:28:44,435 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:28:44,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 134 events. 2/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-09-20 22:28:44,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 296 flow [2022-09-20 22:28:44,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 134 transitions, 280 flow [2022-09-20 22:28:44,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:28:44,454 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;@1c98566f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:28:44,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-09-20 22:28:44,468 INFO L130 PetriNetUnfolder]: 0/49 cut-off events. [2022-09-20 22:28:44,468 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:28:44,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:28:44,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:28:44,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:28:44,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:28:44,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1024845781, now seen corresponding path program 1 times [2022-09-20 22:28:44,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:28:44,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112365805] [2022-09-20 22:28:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:28:44,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:28:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:28:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:28:44,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:28:44,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112365805] [2022-09-20 22:28:44,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112365805] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:28:44,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:28:44,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 22:28:44,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635699182] [2022-09-20 22:28:44,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:28:44,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:28:44,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:28:44,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:28:44,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:28:44,765 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 138 [2022-09-20 22:28:44,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 134 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:44,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:28:44,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 138 [2022-09-20 22:28:44,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:28:44,964 INFO L130 PetriNetUnfolder]: 162/548 cut-off events. [2022-09-20 22:28:44,964 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-09-20 22:28:44,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 548 events. 162/548 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2855 event pairs, 34 based on Foata normal form. 53/572 useless extension candidates. Maximal degree in co-relation 797. Up to 191 conditions per place. [2022-09-20 22:28:44,973 INFO L137 encePairwiseOnDemand]: 133/138 looper letters, 18 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2022-09-20 22:28:44,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 138 transitions, 337 flow [2022-09-20 22:28:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:28:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:28:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2022-09-20 22:28:44,987 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2022-09-20 22:28:44,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2022-09-20 22:28:44,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2022-09-20 22:28:44,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:28:44,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2022-09-20 22:28:44,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:45,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:45,002 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:45,003 INFO L175 Difference]: Start difference. First operand has 145 places, 134 transitions, 280 flow. Second operand 3 states and 391 transitions. [2022-09-20 22:28:45,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 138 transitions, 337 flow [2022-09-20 22:28:45,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 330 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 22:28:45,009 INFO L231 Difference]: Finished difference. Result has 141 places, 130 transitions, 272 flow [2022-09-20 22:28:45,010 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=141, PETRI_TRANSITIONS=130} [2022-09-20 22:28:45,014 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, -4 predicate places. [2022-09-20 22:28:45,014 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 130 transitions, 272 flow [2022-09-20 22:28:45,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:45,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:28:45,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:28:45,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:28:45,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:28:45,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:28:45,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1366403214, now seen corresponding path program 1 times [2022-09-20 22:28:45,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:28:45,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137892371] [2022-09-20 22:28:45,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:28:45,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:28:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:28:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:28:45,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:28:45,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137892371] [2022-09-20 22:28:45,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137892371] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:28:45,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:28:45,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:28:45,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437971619] [2022-09-20 22:28:45,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:28:45,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:28:45,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:28:45,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:28:45,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:28:45,228 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 138 [2022-09-20 22:28:45,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:45,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:28:45,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 138 [2022-09-20 22:28:45,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:28:45,893 INFO L130 PetriNetUnfolder]: 1262/3309 cut-off events. [2022-09-20 22:28:45,894 INFO L131 PetriNetUnfolder]: For 191/191 co-relation queries the response was YES. [2022-09-20 22:28:45,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5385 conditions, 3309 events. 1262/3309 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26632 event pairs, 226 based on Foata normal form. 0/3237 useless extension candidates. Maximal degree in co-relation 5329. Up to 949 conditions per place. [2022-09-20 22:28:45,909 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 22 selfloop transitions, 2 changer transitions 56/177 dead transitions. [2022-09-20 22:28:45,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 177 transitions, 514 flow [2022-09-20 22:28:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:28:45,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:28:45,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1095 transitions. [2022-09-20 22:28:45,912 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2022-09-20 22:28:45,912 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1095 transitions. [2022-09-20 22:28:45,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1095 transitions. [2022-09-20 22:28:45,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:28:45,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1095 transitions. [2022-09-20 22:28:45,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.66666666666667) internal successors, (1095), 9 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:45,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:45,918 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:45,918 INFO L175 Difference]: Start difference. First operand has 141 places, 130 transitions, 272 flow. Second operand 9 states and 1095 transitions. [2022-09-20 22:28:45,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 177 transitions, 514 flow [2022-09-20 22:28:45,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 177 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 22:28:45,921 INFO L231 Difference]: Finished difference. Result has 154 places, 116 transitions, 260 flow [2022-09-20 22:28:45,922 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=260, PETRI_PLACES=154, PETRI_TRANSITIONS=116} [2022-09-20 22:28:45,922 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, 9 predicate places. [2022-09-20 22:28:45,922 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 116 transitions, 260 flow [2022-09-20 22:28:45,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:45,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:28:45,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:28:45,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:28:45,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:28:45,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:28:45,924 INFO L85 PathProgramCache]: Analyzing trace with hash -886381968, now seen corresponding path program 1 times [2022-09-20 22:28:45,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:28:45,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988003793] [2022-09-20 22:28:45,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:28:45,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:28:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:28:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:28:46,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:28:46,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988003793] [2022-09-20 22:28:46,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988003793] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:28:46,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:28:46,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:28:46,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990098244] [2022-09-20 22:28:46,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:28:46,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:28:46,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:28:46,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:28:46,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:28:46,061 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-09-20 22:28:46,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 116 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:46,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:28:46,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-09-20 22:28:46,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:28:48,503 INFO L130 PetriNetUnfolder]: 10674/17625 cut-off events. [2022-09-20 22:28:48,503 INFO L131 PetriNetUnfolder]: For 3759/3759 co-relation queries the response was YES. [2022-09-20 22:28:48,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36530 conditions, 17625 events. 10674/17625 cut-off events. For 3759/3759 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 131708 event pairs, 1929 based on Foata normal form. 318/17476 useless extension candidates. Maximal degree in co-relation 36463. Up to 5068 conditions per place. [2022-09-20 22:28:48,611 INFO L137 encePairwiseOnDemand]: 123/138 looper letters, 50 selfloop transitions, 13 changer transitions 101/251 dead transitions. [2022-09-20 22:28:48,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 251 transitions, 914 flow [2022-09-20 22:28:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:28:48,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:28:48,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1519 transitions. [2022-09-20 22:28:48,615 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.846711259754738 [2022-09-20 22:28:48,615 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1519 transitions. [2022-09-20 22:28:48,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1519 transitions. [2022-09-20 22:28:48,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:28:48,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1519 transitions. [2022-09-20 22:28:48,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.84615384615384) internal successors, (1519), 13 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:48,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:48,621 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:48,621 INFO L175 Difference]: Start difference. First operand has 154 places, 116 transitions, 260 flow. Second operand 13 states and 1519 transitions. [2022-09-20 22:28:48,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 251 transitions, 914 flow [2022-09-20 22:28:48,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 251 transitions, 858 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-09-20 22:28:48,958 INFO L231 Difference]: Finished difference. Result has 150 places, 126 transitions, 379 flow [2022-09-20 22:28:48,959 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=379, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2022-09-20 22:28:48,959 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, 5 predicate places. [2022-09-20 22:28:48,959 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 379 flow [2022-09-20 22:28:48,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:48,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:28:48,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:28:48,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:28:48,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:28:48,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:28:48,961 INFO L85 PathProgramCache]: Analyzing trace with hash -911545105, now seen corresponding path program 1 times [2022-09-20 22:28:48,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:28:48,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099600792] [2022-09-20 22:28:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:28:48,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:28:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:28:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:28:49,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:28:49,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099600792] [2022-09-20 22:28:49,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099600792] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:28:49,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:28:49,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:28:49,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757303881] [2022-09-20 22:28:49,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:28:49,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:28:49,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:28:49,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:28:49,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:28:49,093 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-09-20 22:28:49,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 379 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:49,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:28:49,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-09-20 22:28:49,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:28:51,239 INFO L130 PetriNetUnfolder]: 9563/16304 cut-off events. [2022-09-20 22:28:51,239 INFO L131 PetriNetUnfolder]: For 26226/26242 co-relation queries the response was YES. [2022-09-20 22:28:51,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48236 conditions, 16304 events. 9563/16304 cut-off events. For 26226/26242 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 126904 event pairs, 740 based on Foata normal form. 287/16326 useless extension candidates. Maximal degree in co-relation 48159. Up to 4622 conditions per place. [2022-09-20 22:28:51,366 INFO L137 encePairwiseOnDemand]: 122/138 looper letters, 55 selfloop transitions, 22 changer transitions 109/273 dead transitions. [2022-09-20 22:28:51,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 273 transitions, 1514 flow [2022-09-20 22:28:51,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:28:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:28:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1516 transitions. [2022-09-20 22:28:51,369 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8450390189520625 [2022-09-20 22:28:51,369 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1516 transitions. [2022-09-20 22:28:51,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1516 transitions. [2022-09-20 22:28:51,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:28:51,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1516 transitions. [2022-09-20 22:28:51,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.61538461538461) internal successors, (1516), 13 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:51,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:51,376 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:51,376 INFO L175 Difference]: Start difference. First operand has 150 places, 126 transitions, 379 flow. Second operand 13 states and 1516 transitions. [2022-09-20 22:28:51,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 273 transitions, 1514 flow [2022-09-20 22:28:51,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 273 transitions, 1490 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-09-20 22:28:51,470 INFO L231 Difference]: Finished difference. Result has 162 places, 141 transitions, 641 flow [2022-09-20 22:28:51,470 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=641, PETRI_PLACES=162, PETRI_TRANSITIONS=141} [2022-09-20 22:28:51,472 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, 17 predicate places. [2022-09-20 22:28:51,474 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 141 transitions, 641 flow [2022-09-20 22:28:51,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:51,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:28:51,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:28:51,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:28:51,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:28:51,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:28:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash -898069274, now seen corresponding path program 1 times [2022-09-20 22:28:51,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:28:51,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527455828] [2022-09-20 22:28:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:28:51,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:28:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:28:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:28:51,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:28:51,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527455828] [2022-09-20 22:28:51,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527455828] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:28:51,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:28:51,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:28:51,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623052703] [2022-09-20 22:28:51,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:28:51,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:28:51,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:28:51,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:28:51,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:28:51,587 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-09-20 22:28:51,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 141 transitions, 641 flow. Second operand has 7 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:51,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:28:51,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-09-20 22:28:51,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:28:54,384 INFO L130 PetriNetUnfolder]: 11015/19064 cut-off events. [2022-09-20 22:28:54,384 INFO L131 PetriNetUnfolder]: For 70011/70603 co-relation queries the response was YES. [2022-09-20 22:28:54,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66500 conditions, 19064 events. 11015/19064 cut-off events. For 70011/70603 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 155237 event pairs, 1772 based on Foata normal form. 616/19394 useless extension candidates. Maximal degree in co-relation 66406. Up to 4484 conditions per place. [2022-09-20 22:28:54,554 INFO L137 encePairwiseOnDemand]: 123/138 looper letters, 60 selfloop transitions, 31 changer transitions 97/275 dead transitions. [2022-09-20 22:28:54,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 275 transitions, 1865 flow [2022-09-20 22:28:54,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:28:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:28:54,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1507 transitions. [2022-09-20 22:28:54,559 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8400222965440357 [2022-09-20 22:28:54,559 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1507 transitions. [2022-09-20 22:28:54,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1507 transitions. [2022-09-20 22:28:54,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:28:54,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1507 transitions. [2022-09-20 22:28:54,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.92307692307692) internal successors, (1507), 13 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:54,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:54,570 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:54,570 INFO L175 Difference]: Start difference. First operand has 162 places, 141 transitions, 641 flow. Second operand 13 states and 1507 transitions. [2022-09-20 22:28:54,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 275 transitions, 1865 flow [2022-09-20 22:28:54,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 275 transitions, 1791 flow, removed 37 selfloop flow, removed 0 redundant places. [2022-09-20 22:28:54,823 INFO L231 Difference]: Finished difference. Result has 177 places, 150 transitions, 888 flow [2022-09-20 22:28:54,823 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=888, PETRI_PLACES=177, PETRI_TRANSITIONS=150} [2022-09-20 22:28:54,823 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, 32 predicate places. [2022-09-20 22:28:54,824 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 150 transitions, 888 flow [2022-09-20 22:28:54,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:54,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:28:54,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:28:54,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:28:54,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:28:54,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:28:54,825 INFO L85 PathProgramCache]: Analyzing trace with hash 138840546, now seen corresponding path program 1 times [2022-09-20 22:28:54,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:28:54,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914335238] [2022-09-20 22:28:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:28:54,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:28:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:28:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:28:54,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:28:54,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914335238] [2022-09-20 22:28:54,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914335238] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:28:54,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:28:54,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:28:54,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249924286] [2022-09-20 22:28:54,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:28:54,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:28:54,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:28:54,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:28:54,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:28:54,921 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-09-20 22:28:54,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 150 transitions, 888 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:28:54,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:28:54,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-09-20 22:28:54,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:29:03,411 INFO L130 PetriNetUnfolder]: 32345/56377 cut-off events. [2022-09-20 22:29:03,411 INFO L131 PetriNetUnfolder]: For 124526/154670 co-relation queries the response was YES. [2022-09-20 22:29:04,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142647 conditions, 56377 events. 32345/56377 cut-off events. For 124526/154670 co-relation queries the response was YES. Maximal size of possible extension queue 3363. Compared 547112 event pairs, 1913 based on Foata normal form. 3754/57104 useless extension candidates. Maximal degree in co-relation 142539. Up to 17822 conditions per place. [2022-09-20 22:29:04,340 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 117 selfloop transitions, 20 changer transitions 0/260 dead transitions. [2022-09-20 22:29:04,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 260 transitions, 1878 flow [2022-09-20 22:29:04,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 22:29:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 22:29:04,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1217 transitions. [2022-09-20 22:29:04,343 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8818840579710145 [2022-09-20 22:29:04,343 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1217 transitions. [2022-09-20 22:29:04,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1217 transitions. [2022-09-20 22:29:04,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:29:04,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1217 transitions. [2022-09-20 22:29:04,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.7) internal successors, (1217), 10 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:04,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:04,350 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:04,350 INFO L175 Difference]: Start difference. First operand has 177 places, 150 transitions, 888 flow. Second operand 10 states and 1217 transitions. [2022-09-20 22:29:04,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 260 transitions, 1878 flow [2022-09-20 22:29:04,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 260 transitions, 1802 flow, removed 38 selfloop flow, removed 10 redundant places. [2022-09-20 22:29:04,520 INFO L231 Difference]: Finished difference. Result has 173 places, 168 transitions, 997 flow [2022-09-20 22:29:04,520 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=997, PETRI_PLACES=173, PETRI_TRANSITIONS=168} [2022-09-20 22:29:04,521 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, 28 predicate places. [2022-09-20 22:29:04,521 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 168 transitions, 997 flow [2022-09-20 22:29:04,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:04,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:29:04,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:29:04,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 22:29:04,521 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:29:04,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:29:04,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1327536328, now seen corresponding path program 1 times [2022-09-20 22:29:04,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:29:04,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611835000] [2022-09-20 22:29:04,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:29:04,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:29:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:29:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:29:04,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:29:04,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611835000] [2022-09-20 22:29:04,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611835000] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:29:04,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:29:04,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:29:04,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784088236] [2022-09-20 22:29:04,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:29:04,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:29:04,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:29:04,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:29:04,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:29:04,606 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-09-20 22:29:04,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 168 transitions, 997 flow. Second operand has 7 states, 7 states have (on average 107.14285714285714) internal successors, (750), 7 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:04,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:29:04,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-09-20 22:29:04,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:29:10,347 INFO L130 PetriNetUnfolder]: 14469/36032 cut-off events. [2022-09-20 22:29:10,347 INFO L131 PetriNetUnfolder]: For 118702/124702 co-relation queries the response was YES. [2022-09-20 22:29:10,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117394 conditions, 36032 events. 14469/36032 cut-off events. For 118702/124702 co-relation queries the response was YES. Maximal size of possible extension queue 2354. Compared 447728 event pairs, 3332 based on Foata normal form. 927/34642 useless extension candidates. Maximal degree in co-relation 117283. Up to 6153 conditions per place. [2022-09-20 22:29:10,950 INFO L137 encePairwiseOnDemand]: 123/138 looper letters, 142 selfloop transitions, 60 changer transitions 3/310 dead transitions. [2022-09-20 22:29:10,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 310 transitions, 2718 flow [2022-09-20 22:29:10,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:29:10,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:29:10,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1499 transitions. [2022-09-20 22:29:10,954 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8355629877369007 [2022-09-20 22:29:10,954 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1499 transitions. [2022-09-20 22:29:10,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1499 transitions. [2022-09-20 22:29:10,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:29:10,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1499 transitions. [2022-09-20 22:29:10,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.3076923076923) internal successors, (1499), 13 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:10,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:10,960 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:10,960 INFO L175 Difference]: Start difference. First operand has 173 places, 168 transitions, 997 flow. Second operand 13 states and 1499 transitions. [2022-09-20 22:29:10,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 310 transitions, 2718 flow [2022-09-20 22:29:11,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 310 transitions, 2660 flow, removed 28 selfloop flow, removed 3 redundant places. [2022-09-20 22:29:11,794 INFO L231 Difference]: Finished difference. Result has 194 places, 207 transitions, 1813 flow [2022-09-20 22:29:11,795 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1813, PETRI_PLACES=194, PETRI_TRANSITIONS=207} [2022-09-20 22:29:11,795 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, 49 predicate places. [2022-09-20 22:29:11,795 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 207 transitions, 1813 flow [2022-09-20 22:29:11,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.14285714285714) internal successors, (750), 7 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:11,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:29:11,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:29:11,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 22:29:11,796 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:29:11,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:29:11,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1351311852, now seen corresponding path program 1 times [2022-09-20 22:29:11,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:29:11,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84673127] [2022-09-20 22:29:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:29:11,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:29:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:29:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:29:11,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:29:11,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84673127] [2022-09-20 22:29:11,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84673127] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:29:11,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:29:11,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:29:11,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559170750] [2022-09-20 22:29:11,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:29:11,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:29:11,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:29:11,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:29:11,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:29:11,858 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-09-20 22:29:11,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 207 transitions, 1813 flow. Second operand has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:11,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:29:11,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-09-20 22:29:11,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:29:28,100 INFO L130 PetriNetUnfolder]: 48314/85847 cut-off events. [2022-09-20 22:29:28,100 INFO L131 PetriNetUnfolder]: For 336290/378572 co-relation queries the response was YES. [2022-09-20 22:29:29,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291324 conditions, 85847 events. 48314/85847 cut-off events. For 336290/378572 co-relation queries the response was YES. Maximal size of possible extension queue 5350. Compared 910464 event pairs, 2385 based on Foata normal form. 7858/90839 useless extension candidates. Maximal degree in co-relation 291202. Up to 17982 conditions per place. [2022-09-20 22:29:29,623 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 151 selfloop transitions, 38 changer transitions 22/358 dead transitions. [2022-09-20 22:29:29,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 358 transitions, 3677 flow [2022-09-20 22:29:29,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:29:29,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:29:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1587 transitions. [2022-09-20 22:29:29,626 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8846153846153846 [2022-09-20 22:29:29,626 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1587 transitions. [2022-09-20 22:29:29,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1587 transitions. [2022-09-20 22:29:29,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:29:29,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1587 transitions. [2022-09-20 22:29:29,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 122.07692307692308) internal successors, (1587), 13 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:29,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:29,632 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:29,632 INFO L175 Difference]: Start difference. First operand has 194 places, 207 transitions, 1813 flow. Second operand 13 states and 1587 transitions. [2022-09-20 22:29:29,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 358 transitions, 3677 flow [2022-09-20 22:29:32,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 358 transitions, 3621 flow, removed 28 selfloop flow, removed 0 redundant places. [2022-09-20 22:29:32,640 INFO L231 Difference]: Finished difference. Result has 212 places, 214 transitions, 1810 flow [2022-09-20 22:29:32,640 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1810, PETRI_PLACES=212, PETRI_TRANSITIONS=214} [2022-09-20 22:29:32,640 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, 67 predicate places. [2022-09-20 22:29:32,641 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 214 transitions, 1810 flow [2022-09-20 22:29:32,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:32,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:29:32,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:29:32,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 22:29:32,641 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:29:32,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:29:32,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1232165901, now seen corresponding path program 1 times [2022-09-20 22:29:32,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:29:32,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052109552] [2022-09-20 22:29:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:29:32,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:29:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:29:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:29:32,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:29:32,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052109552] [2022-09-20 22:29:32,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052109552] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:29:32,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:29:32,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:29:32,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300885342] [2022-09-20 22:29:32,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:29:32,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:29:32,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:29:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:29:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:29:32,725 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-09-20 22:29:32,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 214 transitions, 1810 flow. Second operand has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:32,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:29:32,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-09-20 22:29:32,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:29:48,664 INFO L130 PetriNetUnfolder]: 45450/82409 cut-off events. [2022-09-20 22:29:48,664 INFO L131 PetriNetUnfolder]: For 429740/468973 co-relation queries the response was YES. [2022-09-20 22:29:50,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326910 conditions, 82409 events. 45450/82409 cut-off events. For 429740/468973 co-relation queries the response was YES. Maximal size of possible extension queue 5242. Compared 898440 event pairs, 1894 based on Foata normal form. 6807/86509 useless extension candidates. Maximal degree in co-relation 326779. Up to 17237 conditions per place. [2022-09-20 22:29:50,502 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 138 selfloop transitions, 58 changer transitions 78/406 dead transitions. [2022-09-20 22:29:50,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 406 transitions, 4426 flow [2022-09-20 22:29:50,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:29:50,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:29:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1956 transitions. [2022-09-20 22:29:50,506 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8858695652173914 [2022-09-20 22:29:50,506 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1956 transitions. [2022-09-20 22:29:50,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1956 transitions. [2022-09-20 22:29:50,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:29:50,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1956 transitions. [2022-09-20 22:29:50,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.25) internal successors, (1956), 16 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:50,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:50,512 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:29:50,512 INFO L175 Difference]: Start difference. First operand has 212 places, 214 transitions, 1810 flow. Second operand 16 states and 1956 transitions. [2022-09-20 22:29:50,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 406 transitions, 4426 flow