/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 06:57:06,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 06:57:06,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 06:57:06,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 06:57:06,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 06:57:06,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 06:57:06,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 06:57:06,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 06:57:06,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 06:57:06,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 06:57:06,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 06:57:06,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 06:57:06,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 06:57:06,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 06:57:06,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 06:57:06,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 06:57:06,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 06:57:06,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 06:57:06,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 06:57:06,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 06:57:06,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 06:57:06,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 06:57:06,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 06:57:06,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 06:57:06,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 06:57:06,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 06:57:06,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 06:57:06,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 06:57:06,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 06:57:06,917 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 06:57:06,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 06:57:06,918 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 06:57:06,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 06:57:06,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 06:57:06,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 06:57:06,919 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 06:57:06,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 06:57:06,920 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 06:57:06,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 06:57:06,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 06:57:06,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 06:57:06,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 06:57:06,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 06:57:06,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 06:57:06,921 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 06:57:06,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 06:57:06,921 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 06:57:06,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 06:57:06,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 06:57:06,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 06:57:06,922 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 06:57:06,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 06:57:06,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:57:06,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 06:57:06,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 06:57:06,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 06:57:06,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 06:57:06,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 06:57:06,923 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 06:57:06,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 06:57:06,923 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 06:57:07,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 06:57:07,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 06:57:07,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 06:57:07,181 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 06:57:07,181 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 06:57:07,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-01-28 06:57:08,369 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 06:57:08,619 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 06:57:08,620 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-01-28 06:57:08,631 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3b3b9e8b/f27c511fbece4b5db98be7cbdaa8a03c/FLAG08593791d [2023-01-28 06:57:08,642 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3b3b9e8b/f27c511fbece4b5db98be7cbdaa8a03c [2023-01-28 06:57:08,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 06:57:08,645 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 06:57:08,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 06:57:08,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 06:57:08,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 06:57:08,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:57:08" (1/1) ... [2023-01-28 06:57:08,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3031a6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:57:08, skipping insertion in model container [2023-01-28 06:57:08,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:57:08" (1/1) ... [2023-01-28 06:57:08,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 06:57:08,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 06:57:08,847 WARN L247 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.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2023-01-28 06:57:09,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:57:09,079 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 06:57:09,089 WARN L247 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.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2023-01-28 06:57:09,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:57:09,163 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 06:57:09,164 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 06:57:09,170 INFO L208 MainTranslator]: Completed translation [2023-01-28 06:57:09,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:57:09 WrapperNode [2023-01-28 06:57:09,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 06:57:09,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 06:57:09,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 06:57:09,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 06:57:09,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:57:09" (1/1) ... [2023-01-28 06:57:09,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:57:09" (1/1) ... [2023-01-28 06:57:09,221 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 167 [2023-01-28 06:57:09,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 06:57:09,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 06:57:09,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 06:57:09,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 06:57:09,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:57:09" (1/1) ... [2023-01-28 06:57:09,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:57:09" (1/1) ... [2023-01-28 06:57:09,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:57:09" (1/1) ... [2023-01-28 06:57:09,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:57:09" (1/1) ... [2023-01-28 06:57:09,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:57:09" (1/1) ... [2023-01-28 06:57:09,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:57:09" (1/1) ... [2023-01-28 06:57:09,249 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:57:09" (1/1) ... [2023-01-28 06:57:09,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:57:09" (1/1) ... [2023-01-28 06:57:09,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 06:57:09,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 06:57:09,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 06:57:09,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 06:57:09,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:57:09" (1/1) ... [2023-01-28 06:57:09,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:57:09,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:57:09,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 06:57:09,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 06:57:09,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 06:57:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 06:57:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 06:57:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 06:57:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 06:57:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 06:57:09,319 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 06:57:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 06:57:09,327 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 06:57:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 06:57:09,327 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 06:57:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-01-28 06:57:09,328 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-01-28 06:57:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 06:57:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 06:57:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 06:57:09,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 06:57:09,329 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 06:57:09,475 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 06:57:09,477 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 06:57:09,825 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 06:57:09,965 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 06:57:09,965 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 06:57:09,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:57:09 BoogieIcfgContainer [2023-01-28 06:57:09,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 06:57:09,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 06:57:09,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 06:57:09,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 06:57:09,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 06:57:08" (1/3) ... [2023-01-28 06:57:09,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a0620d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:57:09, skipping insertion in model container [2023-01-28 06:57:09,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:57:09" (2/3) ... [2023-01-28 06:57:09,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a0620d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:57:09, skipping insertion in model container [2023-01-28 06:57:09,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:57:09" (3/3) ... [2023-01-28 06:57:09,974 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-01-28 06:57:09,990 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 06:57:09,990 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 06:57:09,990 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 06:57:10,041 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 06:57:10,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 278 flow [2023-01-28 06:57:10,117 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2023-01-28 06:57:10,118 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:57:10,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-01-28 06:57:10,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 129 transitions, 278 flow [2023-01-28 06:57:10,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 262 flow [2023-01-28 06:57:10,130 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 06:57:10,138 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 125 transitions, 262 flow [2023-01-28 06:57:10,140 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 125 transitions, 262 flow [2023-01-28 06:57:10,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 125 transitions, 262 flow [2023-01-28 06:57:10,170 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2023-01-28 06:57:10,170 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:57:10,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-01-28 06:57:10,172 INFO L119 LiptonReduction]: Number of co-enabled transitions 2936 [2023-01-28 06:57:13,997 INFO L134 LiptonReduction]: Checked pairs total: 6820 [2023-01-28 06:57:13,998 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-01-28 06:57:14,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 06:57:14,015 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;@3a35c688, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 06:57:14,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-28 06:57:14,020 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2023-01-28 06:57:14,020 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:57:14,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:57:14,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:57:14,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:57:14,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:57:14,026 INFO L85 PathProgramCache]: Analyzing trace with hash -273626498, now seen corresponding path program 1 times [2023-01-28 06:57:14,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:57:14,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104885949] [2023-01-28 06:57:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:57:14,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:57:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:57:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:57:14,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:57:14,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104885949] [2023-01-28 06:57:14,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104885949] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:57:14,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:57:14,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 06:57:14,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399289218] [2023-01-28 06:57:14,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:57:14,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:57:14,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:57:14,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:57:14,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:57:14,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 235 [2023-01-28 06:57:14,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:14,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:57:14,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 235 [2023-01-28 06:57:14,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:57:15,077 INFO L130 PetriNetUnfolder]: 3113/4519 cut-off events. [2023-01-28 06:57:15,077 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-01-28 06:57:15,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8913 conditions, 4519 events. 3113/4519 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 24198 event pairs, 593 based on Foata normal form. 0/4326 useless extension candidates. Maximal degree in co-relation 8901. Up to 3385 conditions per place. [2023-01-28 06:57:15,105 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 32 selfloop transitions, 2 changer transitions 2/40 dead transitions. [2023-01-28 06:57:15,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 40 transitions, 164 flow [2023-01-28 06:57:15,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:57:15,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:57:15,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-01-28 06:57:15,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2023-01-28 06:57:15,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-01-28 06:57:15,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-01-28 06:57:15,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:57:15,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-01-28 06:57:15,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:15,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:15,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:15,147 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 72 flow. Second operand 3 states and 384 transitions. [2023-01-28 06:57:15,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 40 transitions, 164 flow [2023-01-28 06:57:15,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 160 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 06:57:15,153 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 66 flow [2023-01-28 06:57:15,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-01-28 06:57:15,158 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-01-28 06:57:15,158 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 66 flow [2023-01-28 06:57:15,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:15,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:57:15,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:57:15,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 06:57:15,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:57:15,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:57:15,168 INFO L85 PathProgramCache]: Analyzing trace with hash 243126665, now seen corresponding path program 1 times [2023-01-28 06:57:15,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:57:15,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512498828] [2023-01-28 06:57:15,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:57:15,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:57:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:57:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:57:15,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:57:15,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512498828] [2023-01-28 06:57:15,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512498828] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:57:15,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:57:15,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:57:15,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919165607] [2023-01-28 06:57:15,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:57:15,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:57:15,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:57:15,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:57:15,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:57:15,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 06:57:15,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:15,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:57:15,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 06:57:15,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:57:17,401 INFO L130 PetriNetUnfolder]: 11263/15464 cut-off events. [2023-01-28 06:57:17,401 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-01-28 06:57:17,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31454 conditions, 15464 events. 11263/15464 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 77721 event pairs, 2087 based on Foata normal form. 720/16184 useless extension candidates. Maximal degree in co-relation 31444. Up to 7121 conditions per place. [2023-01-28 06:57:17,491 INFO L137 encePairwiseOnDemand]: 223/235 looper letters, 45 selfloop transitions, 10 changer transitions 40/95 dead transitions. [2023-01-28 06:57:17,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 95 transitions, 394 flow [2023-01-28 06:57:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:57:17,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:57:17,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 770 transitions. [2023-01-28 06:57:17,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2023-01-28 06:57:17,494 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 770 transitions. [2023-01-28 06:57:17,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 770 transitions. [2023-01-28 06:57:17,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:57:17,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 770 transitions. [2023-01-28 06:57:17,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:17,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:17,500 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:17,501 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 66 flow. Second operand 7 states and 770 transitions. [2023-01-28 06:57:17,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 95 transitions, 394 flow [2023-01-28 06:57:17,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 95 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:57:17,507 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 158 flow [2023-01-28 06:57:17,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=158, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-01-28 06:57:17,508 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-01-28 06:57:17,508 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 158 flow [2023-01-28 06:57:17,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:17,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:57:17,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:57:17,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 06:57:17,509 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:57:17,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:57:17,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1656233583, now seen corresponding path program 1 times [2023-01-28 06:57:17,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:57:17,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16309556] [2023-01-28 06:57:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:57:17,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:57:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:57:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:57:17,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:57:17,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16309556] [2023-01-28 06:57:17,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16309556] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:57:17,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:57:17,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:57:17,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464728168] [2023-01-28 06:57:17,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:57:17,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:57:17,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:57:17,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:57:17,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:57:17,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 06:57:17,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:17,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:57:17,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 06:57:17,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:57:19,651 INFO L130 PetriNetUnfolder]: 11182/15497 cut-off events. [2023-01-28 06:57:19,652 INFO L131 PetriNetUnfolder]: For 15828/15828 co-relation queries the response was YES. [2023-01-28 06:57:19,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47216 conditions, 15497 events. 11182/15497 cut-off events. For 15828/15828 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 80805 event pairs, 1039 based on Foata normal form. 550/16047 useless extension candidates. Maximal degree in co-relation 47200. Up to 8595 conditions per place. [2023-01-28 06:57:19,782 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 56 selfloop transitions, 20 changer transitions 37/113 dead transitions. [2023-01-28 06:57:19,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 113 transitions, 700 flow [2023-01-28 06:57:19,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:57:19,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:57:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 781 transitions. [2023-01-28 06:57:19,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47477203647416416 [2023-01-28 06:57:19,785 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 781 transitions. [2023-01-28 06:57:19,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 781 transitions. [2023-01-28 06:57:19,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:57:19,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 781 transitions. [2023-01-28 06:57:19,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:19,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:19,790 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:19,790 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 158 flow. Second operand 7 states and 781 transitions. [2023-01-28 06:57:19,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 113 transitions, 700 flow [2023-01-28 06:57:19,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 113 transitions, 692 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 06:57:19,958 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 317 flow [2023-01-28 06:57:19,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=317, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-01-28 06:57:19,959 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2023-01-28 06:57:19,962 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 317 flow [2023-01-28 06:57:19,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:19,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:57:19,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:57:19,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 06:57:19,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:57:19,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:57:19,964 INFO L85 PathProgramCache]: Analyzing trace with hash -196410352, now seen corresponding path program 1 times [2023-01-28 06:57:19,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:57:19,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78866818] [2023-01-28 06:57:19,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:57:19,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:57:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:57:20,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:57:20,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:57:20,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78866818] [2023-01-28 06:57:20,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78866818] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:57:20,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:57:20,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:57:20,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485473976] [2023-01-28 06:57:20,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:57:20,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:57:20,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:57:20,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:57:20,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:57:20,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 06:57:20,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:20,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:57:20,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 06:57:20,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:57:22,014 INFO L130 PetriNetUnfolder]: 10691/14832 cut-off events. [2023-01-28 06:57:22,014 INFO L131 PetriNetUnfolder]: For 41291/41291 co-relation queries the response was YES. [2023-01-28 06:57:22,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55978 conditions, 14832 events. 10691/14832 cut-off events. For 41291/41291 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 77487 event pairs, 1159 based on Foata normal form. 472/15304 useless extension candidates. Maximal degree in co-relation 55956. Up to 8401 conditions per place. [2023-01-28 06:57:22,092 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 64 selfloop transitions, 25 changer transitions 39/128 dead transitions. [2023-01-28 06:57:22,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 128 transitions, 1077 flow [2023-01-28 06:57:22,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:57:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:57:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 774 transitions. [2023-01-28 06:57:22,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470516717325228 [2023-01-28 06:57:22,095 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 774 transitions. [2023-01-28 06:57:22,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 774 transitions. [2023-01-28 06:57:22,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:57:22,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 774 transitions. [2023-01-28 06:57:22,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:22,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:22,100 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:22,100 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 317 flow. Second operand 7 states and 774 transitions. [2023-01-28 06:57:22,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 128 transitions, 1077 flow [2023-01-28 06:57:22,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 128 transitions, 1061 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-01-28 06:57:22,367 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 622 flow [2023-01-28 06:57:22,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=622, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2023-01-28 06:57:22,368 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-01-28 06:57:22,368 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 622 flow [2023-01-28 06:57:22,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:22,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:57:22,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:57:22,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 06:57:22,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:57:22,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:57:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash -672716148, now seen corresponding path program 1 times [2023-01-28 06:57:22,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:57:22,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266350460] [2023-01-28 06:57:22,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:57:22,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:57:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:57:22,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:57:22,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:57:22,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266350460] [2023-01-28 06:57:22,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266350460] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:57:22,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:57:22,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:57:22,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637818142] [2023-01-28 06:57:22,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:57:22,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:57:22,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:57:22,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:57:22,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:57:22,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 06:57:22,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 622 flow. Second operand has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:22,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:57:22,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 06:57:22,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:57:24,522 INFO L130 PetriNetUnfolder]: 13229/18482 cut-off events. [2023-01-28 06:57:24,522 INFO L131 PetriNetUnfolder]: For 75968/75968 co-relation queries the response was YES. [2023-01-28 06:57:24,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76413 conditions, 18482 events. 13229/18482 cut-off events. For 75968/75968 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 100177 event pairs, 2623 based on Foata normal form. 432/18914 useless extension candidates. Maximal degree in co-relation 76386. Up to 7683 conditions per place. [2023-01-28 06:57:24,586 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 66 selfloop transitions, 41 changer transitions 36/143 dead transitions. [2023-01-28 06:57:24,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 143 transitions, 1418 flow [2023-01-28 06:57:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:57:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:57:24,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 774 transitions. [2023-01-28 06:57:24,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470516717325228 [2023-01-28 06:57:24,589 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 774 transitions. [2023-01-28 06:57:24,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 774 transitions. [2023-01-28 06:57:24,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:57:24,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 774 transitions. [2023-01-28 06:57:24,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:24,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:24,594 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:24,594 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 622 flow. Second operand 7 states and 774 transitions. [2023-01-28 06:57:24,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 143 transitions, 1418 flow [2023-01-28 06:57:24,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 143 transitions, 1402 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-01-28 06:57:24,743 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 971 flow [2023-01-28 06:57:24,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=971, PETRI_PLACES=70, PETRI_TRANSITIONS=77} [2023-01-28 06:57:24,744 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-01-28 06:57:24,744 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 971 flow [2023-01-28 06:57:24,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:24,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:57:24,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:57:24,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 06:57:24,745 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:57:24,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:57:24,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2006318020, now seen corresponding path program 1 times [2023-01-28 06:57:24,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:57:24,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321418970] [2023-01-28 06:57:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:57:24,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:57:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:57:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:57:25,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:57:25,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321418970] [2023-01-28 06:57:25,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321418970] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:57:25,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:57:25,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:57:25,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196116788] [2023-01-28 06:57:25,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:57:25,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 06:57:25,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:57:25,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 06:57:25,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 06:57:25,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 235 [2023-01-28 06:57:25,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 77 transitions, 971 flow. Second operand has 6 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:25,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:57:25,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 235 [2023-01-28 06:57:25,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:57:26,646 INFO L130 PetriNetUnfolder]: 9622/14180 cut-off events. [2023-01-28 06:57:26,646 INFO L131 PetriNetUnfolder]: For 96937/98364 co-relation queries the response was YES. [2023-01-28 06:57:26,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65024 conditions, 14180 events. 9622/14180 cut-off events. For 96937/98364 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 85456 event pairs, 2375 based on Foata normal form. 1033/14994 useless extension candidates. Maximal degree in co-relation 64989. Up to 9641 conditions per place. [2023-01-28 06:57:26,747 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 92 selfloop transitions, 12 changer transitions 22/147 dead transitions. [2023-01-28 06:57:26,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 147 transitions, 1932 flow [2023-01-28 06:57:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:57:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:57:26,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 705 transitions. [2023-01-28 06:57:26,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-01-28 06:57:26,754 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 705 transitions. [2023-01-28 06:57:26,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 705 transitions. [2023-01-28 06:57:26,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:57:26,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 705 transitions. [2023-01-28 06:57:26,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:26,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:26,763 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:26,763 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 971 flow. Second operand 6 states and 705 transitions. [2023-01-28 06:57:26,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 147 transitions, 1932 flow [2023-01-28 06:57:27,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 147 transitions, 1910 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-01-28 06:57:27,097 INFO L231 Difference]: Finished difference. Result has 72 places, 85 transitions, 1098 flow [2023-01-28 06:57:27,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1098, PETRI_PLACES=72, PETRI_TRANSITIONS=85} [2023-01-28 06:57:27,098 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2023-01-28 06:57:27,098 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 85 transitions, 1098 flow [2023-01-28 06:57:27,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:27,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:57:27,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:57:27,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 06:57:27,099 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:57:27,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:57:27,099 INFO L85 PathProgramCache]: Analyzing trace with hash 271270556, now seen corresponding path program 1 times [2023-01-28 06:57:27,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:57:27,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298064590] [2023-01-28 06:57:27,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:57:27,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:57:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:57:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:57:27,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:57:27,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298064590] [2023-01-28 06:57:27,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298064590] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:57:27,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:57:27,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:57:27,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072623596] [2023-01-28 06:57:27,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:57:27,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:57:27,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:57:27,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:57:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:57:27,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 235 [2023-01-28 06:57:27,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 85 transitions, 1098 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:27,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:57:27,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 235 [2023-01-28 06:57:27,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:57:29,425 INFO L130 PetriNetUnfolder]: 10332/15054 cut-off events. [2023-01-28 06:57:29,425 INFO L131 PetriNetUnfolder]: For 111662/113297 co-relation queries the response was YES. [2023-01-28 06:57:29,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74190 conditions, 15054 events. 10332/15054 cut-off events. For 111662/113297 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 90031 event pairs, 1773 based on Foata normal form. 944/15731 useless extension candidates. Maximal degree in co-relation 74153. Up to 10500 conditions per place. [2023-01-28 06:57:29,515 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 93 selfloop transitions, 30 changer transitions 13/157 dead transitions. [2023-01-28 06:57:29,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 157 transitions, 2149 flow [2023-01-28 06:57:29,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:57:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:57:29,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 699 transitions. [2023-01-28 06:57:29,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4957446808510638 [2023-01-28 06:57:29,517 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 699 transitions. [2023-01-28 06:57:29,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 699 transitions. [2023-01-28 06:57:29,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:57:29,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 699 transitions. [2023-01-28 06:57:29,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:29,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:29,522 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:29,522 INFO L175 Difference]: Start difference. First operand has 72 places, 85 transitions, 1098 flow. Second operand 6 states and 699 transitions. [2023-01-28 06:57:29,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 157 transitions, 2149 flow [2023-01-28 06:57:29,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 157 transitions, 2068 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 06:57:29,710 INFO L231 Difference]: Finished difference. Result has 76 places, 105 transitions, 1449 flow [2023-01-28 06:57:29,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1449, PETRI_PLACES=76, PETRI_TRANSITIONS=105} [2023-01-28 06:57:29,711 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2023-01-28 06:57:29,711 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 105 transitions, 1449 flow [2023-01-28 06:57:29,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:29,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:57:29,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:57:29,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 06:57:29,712 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:57:29,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:57:29,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1653571782, now seen corresponding path program 2 times [2023-01-28 06:57:29,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:57:29,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761947121] [2023-01-28 06:57:29,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:57:29,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:57:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:57:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:57:30,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:57:30,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761947121] [2023-01-28 06:57:30,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761947121] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:57:30,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:57:30,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:57:30,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617781408] [2023-01-28 06:57:30,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:57:30,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:57:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:57:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:57:30,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:57:30,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 06:57:30,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 105 transitions, 1449 flow. Second operand has 8 states, 8 states have (on average 98.125) internal successors, (785), 8 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:30,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:57:30,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 06:57:30,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:57:32,609 INFO L130 PetriNetUnfolder]: 14125/19886 cut-off events. [2023-01-28 06:57:32,610 INFO L131 PetriNetUnfolder]: For 144352/144352 co-relation queries the response was YES. [2023-01-28 06:57:32,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102998 conditions, 19886 events. 14125/19886 cut-off events. For 144352/144352 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 109918 event pairs, 1035 based on Foata normal form. 552/20438 useless extension candidates. Maximal degree in co-relation 102958. Up to 6877 conditions per place. [2023-01-28 06:57:32,707 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 134 selfloop transitions, 50 changer transitions 61/245 dead transitions. [2023-01-28 06:57:32,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 245 transitions, 3559 flow [2023-01-28 06:57:32,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 06:57:32,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 06:57:32,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 981 transitions. [2023-01-28 06:57:32,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46382978723404256 [2023-01-28 06:57:32,710 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 981 transitions. [2023-01-28 06:57:32,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 981 transitions. [2023-01-28 06:57:32,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:57:32,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 981 transitions. [2023-01-28 06:57:32,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 109.0) internal successors, (981), 9 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:32,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:32,716 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:32,716 INFO L175 Difference]: Start difference. First operand has 76 places, 105 transitions, 1449 flow. Second operand 9 states and 981 transitions. [2023-01-28 06:57:32,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 245 transitions, 3559 flow [2023-01-28 06:57:32,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 245 transitions, 3516 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-28 06:57:32,945 INFO L231 Difference]: Finished difference. Result has 87 places, 123 transitions, 1974 flow [2023-01-28 06:57:32,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1974, PETRI_PLACES=87, PETRI_TRANSITIONS=123} [2023-01-28 06:57:32,945 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2023-01-28 06:57:32,946 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 123 transitions, 1974 flow [2023-01-28 06:57:32,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.125) internal successors, (785), 8 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:32,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:57:32,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:57:32,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 06:57:32,946 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:57:32,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:57:32,947 INFO L85 PathProgramCache]: Analyzing trace with hash -175886107, now seen corresponding path program 1 times [2023-01-28 06:57:32,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:57:32,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540981405] [2023-01-28 06:57:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:57:32,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:57:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:57:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:57:33,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:57:33,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540981405] [2023-01-28 06:57:33,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540981405] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:57:33,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:57:33,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:57:33,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226878770] [2023-01-28 06:57:33,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:57:33,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:57:33,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:57:33,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:57:33,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:57:33,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 235 [2023-01-28 06:57:33,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 123 transitions, 1974 flow. Second operand has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:33,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:57:33,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 235 [2023-01-28 06:57:33,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:57:36,789 INFO L130 PetriNetUnfolder]: 15901/22538 cut-off events. [2023-01-28 06:57:36,789 INFO L131 PetriNetUnfolder]: For 222749/222749 co-relation queries the response was YES. [2023-01-28 06:57:36,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125468 conditions, 22538 events. 15901/22538 cut-off events. For 222749/222749 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 130488 event pairs, 1435 based on Foata normal form. 304/22842 useless extension candidates. Maximal degree in co-relation 125422. Up to 10239 conditions per place. [2023-01-28 06:57:37,281 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 119 selfloop transitions, 138 changer transitions 49/306 dead transitions. [2023-01-28 06:57:37,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 306 transitions, 4703 flow [2023-01-28 06:57:37,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 06:57:37,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 06:57:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1383 transitions. [2023-01-28 06:57:37,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45270049099836335 [2023-01-28 06:57:37,287 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1383 transitions. [2023-01-28 06:57:37,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1383 transitions. [2023-01-28 06:57:37,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:57:37,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1383 transitions. [2023-01-28 06:57:37,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:37,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 235.0) internal successors, (3290), 14 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:37,298 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 235.0) internal successors, (3290), 14 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:37,298 INFO L175 Difference]: Start difference. First operand has 87 places, 123 transitions, 1974 flow. Second operand 13 states and 1383 transitions. [2023-01-28 06:57:37,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 306 transitions, 4703 flow [2023-01-28 06:57:38,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 306 transitions, 4591 flow, removed 48 selfloop flow, removed 3 redundant places. [2023-01-28 06:57:38,444 INFO L231 Difference]: Finished difference. Result has 101 places, 190 transitions, 3636 flow [2023-01-28 06:57:38,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3636, PETRI_PLACES=101, PETRI_TRANSITIONS=190} [2023-01-28 06:57:38,445 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2023-01-28 06:57:38,445 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 190 transitions, 3636 flow [2023-01-28 06:57:38,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:38,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:57:38,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:57:38,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 06:57:38,446 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:57:38,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:57:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash 963103137, now seen corresponding path program 2 times [2023-01-28 06:57:38,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:57:38,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128031272] [2023-01-28 06:57:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:57:38,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:57:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:57:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:57:39,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:57:39,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128031272] [2023-01-28 06:57:39,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128031272] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:57:39,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:57:39,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:57:39,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564179373] [2023-01-28 06:57:39,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:57:39,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:57:39,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:57:39,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:57:39,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:57:39,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 06:57:39,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 190 transitions, 3636 flow. Second operand has 8 states, 8 states have (on average 98.25) internal successors, (786), 8 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:39,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:57:39,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 06:57:39,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:57:42,289 INFO L130 PetriNetUnfolder]: 15957/22674 cut-off events. [2023-01-28 06:57:42,289 INFO L131 PetriNetUnfolder]: For 303707/303707 co-relation queries the response was YES. [2023-01-28 06:57:42,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141143 conditions, 22674 events. 15957/22674 cut-off events. For 303707/303707 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 132515 event pairs, 4099 based on Foata normal form. 272/22946 useless extension candidates. Maximal degree in co-relation 141090. Up to 15599 conditions per place. [2023-01-28 06:57:42,472 INFO L137 encePairwiseOnDemand]: 224/235 looper letters, 213 selfloop transitions, 49 changer transitions 40/302 dead transitions. [2023-01-28 06:57:42,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 302 transitions, 5884 flow [2023-01-28 06:57:42,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 06:57:42,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 06:57:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 859 transitions. [2023-01-28 06:57:42,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45691489361702126 [2023-01-28 06:57:42,476 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 859 transitions. [2023-01-28 06:57:42,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 859 transitions. [2023-01-28 06:57:42,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:57:42,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 859 transitions. [2023-01-28 06:57:42,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 107.375) internal successors, (859), 8 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:42,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:42,481 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:42,482 INFO L175 Difference]: Start difference. First operand has 101 places, 190 transitions, 3636 flow. Second operand 8 states and 859 transitions. [2023-01-28 06:57:42,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 302 transitions, 5884 flow [2023-01-28 06:57:44,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 302 transitions, 5584 flow, removed 138 selfloop flow, removed 8 redundant places. [2023-01-28 06:57:44,674 INFO L231 Difference]: Finished difference. Result has 101 places, 211 transitions, 3996 flow [2023-01-28 06:57:44,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3424, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3996, PETRI_PLACES=101, PETRI_TRANSITIONS=211} [2023-01-28 06:57:44,674 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2023-01-28 06:57:44,675 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 211 transitions, 3996 flow [2023-01-28 06:57:44,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.25) internal successors, (786), 8 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:44,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:57:44,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:57:44,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 06:57:44,675 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:57:44,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:57:44,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1600301353, now seen corresponding path program 3 times [2023-01-28 06:57:44,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:57:44,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593046201] [2023-01-28 06:57:44,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:57:44,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:57:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:57:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:57:45,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:57:45,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593046201] [2023-01-28 06:57:45,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593046201] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:57:45,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:57:45,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:57:45,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236681831] [2023-01-28 06:57:45,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:57:45,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:57:45,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:57:45,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:57:45,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:57:45,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 235 [2023-01-28 06:57:45,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 211 transitions, 3996 flow. Second operand has 8 states, 8 states have (on average 96.25) internal successors, (770), 8 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:45,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:57:45,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 235 [2023-01-28 06:57:45,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:57:48,365 INFO L130 PetriNetUnfolder]: 16346/23371 cut-off events. [2023-01-28 06:57:48,365 INFO L131 PetriNetUnfolder]: For 290317/290317 co-relation queries the response was YES. [2023-01-28 06:57:48,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147515 conditions, 23371 events. 16346/23371 cut-off events. For 290317/290317 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 138511 event pairs, 1818 based on Foata normal form. 272/23643 useless extension candidates. Maximal degree in co-relation 147462. Up to 11149 conditions per place. [2023-01-28 06:57:48,532 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 168 selfloop transitions, 143 changer transitions 43/354 dead transitions. [2023-01-28 06:57:48,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 354 transitions, 6594 flow [2023-01-28 06:57:48,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 06:57:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 06:57:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1064 transitions. [2023-01-28 06:57:48,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45276595744680853 [2023-01-28 06:57:48,535 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1064 transitions. [2023-01-28 06:57:48,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1064 transitions. [2023-01-28 06:57:48,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:57:48,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1064 transitions. [2023-01-28 06:57:48,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:48,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:48,541 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:48,541 INFO L175 Difference]: Start difference. First operand has 101 places, 211 transitions, 3996 flow. Second operand 10 states and 1064 transitions. [2023-01-28 06:57:48,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 354 transitions, 6594 flow [2023-01-28 06:57:50,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 354 transitions, 6452 flow, removed 37 selfloop flow, removed 5 redundant places. [2023-01-28 06:57:50,515 INFO L231 Difference]: Finished difference. Result has 112 places, 263 transitions, 5526 flow [2023-01-28 06:57:50,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3895, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5526, PETRI_PLACES=112, PETRI_TRANSITIONS=263} [2023-01-28 06:57:50,516 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 70 predicate places. [2023-01-28 06:57:50,516 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 263 transitions, 5526 flow [2023-01-28 06:57:50,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 96.25) internal successors, (770), 8 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:50,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:57:50,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:57:50,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 06:57:50,517 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:57:50,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:57:50,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2031542937, now seen corresponding path program 4 times [2023-01-28 06:57:50,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:57:50,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833302308] [2023-01-28 06:57:50,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:57:50,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:57:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:57:51,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:57:51,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:57:51,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833302308] [2023-01-28 06:57:51,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833302308] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:57:51,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:57:51,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:57:51,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114174138] [2023-01-28 06:57:51,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:57:51,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:57:51,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:57:51,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:57:51,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:57:51,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 235 [2023-01-28 06:57:51,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 263 transitions, 5526 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) [2023-01-28 06:57:51,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:57:51,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 235 [2023-01-28 06:57:51,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:57:53,920 INFO L130 PetriNetUnfolder]: 14187/21191 cut-off events. [2023-01-28 06:57:53,920 INFO L131 PetriNetUnfolder]: For 344433/346863 co-relation queries the response was YES. [2023-01-28 06:57:54,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142876 conditions, 21191 events. 14187/21191 cut-off events. For 344433/346863 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 140847 event pairs, 1991 based on Foata normal form. 1652/22122 useless extension candidates. Maximal degree in co-relation 142815. Up to 11029 conditions per place. [2023-01-28 06:57:54,066 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 199 selfloop transitions, 23 changer transitions 24/319 dead transitions. [2023-01-28 06:57:54,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 319 transitions, 6855 flow [2023-01-28 06:57:54,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:57:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:57:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 791 transitions. [2023-01-28 06:57:54,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808510638297872 [2023-01-28 06:57:54,069 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 791 transitions. [2023-01-28 06:57:54,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 791 transitions. [2023-01-28 06:57:54,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:57:54,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 791 transitions. [2023-01-28 06:57:54,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 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) [2023-01-28 06:57:54,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:54,073 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:54,073 INFO L175 Difference]: Start difference. First operand has 112 places, 263 transitions, 5526 flow. Second operand 7 states and 791 transitions. [2023-01-28 06:57:54,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 319 transitions, 6855 flow [2023-01-28 06:57:55,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 319 transitions, 6749 flow, removed 48 selfloop flow, removed 3 redundant places. [2023-01-28 06:57:55,964 INFO L231 Difference]: Finished difference. Result has 115 places, 263 transitions, 5511 flow [2023-01-28 06:57:55,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5442, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5511, PETRI_PLACES=115, PETRI_TRANSITIONS=263} [2023-01-28 06:57:55,965 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2023-01-28 06:57:55,965 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 263 transitions, 5511 flow [2023-01-28 06:57:55,966 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) [2023-01-28 06:57:55,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:57:55,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:57:55,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 06:57:55,966 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:57:55,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:57:55,966 INFO L85 PathProgramCache]: Analyzing trace with hash 886799159, now seen corresponding path program 1 times [2023-01-28 06:57:55,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:57:55,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455701441] [2023-01-28 06:57:55,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:57:55,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:57:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:57:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:57:56,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:57:56,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455701441] [2023-01-28 06:57:56,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455701441] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:57:56,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:57:56,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:57:56,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094263846] [2023-01-28 06:57:56,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:57:56,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 06:57:56,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:57:56,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 06:57:56,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 06:57:56,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 235 [2023-01-28 06:57:56,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 263 transitions, 5511 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:56,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:57:56,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 235 [2023-01-28 06:57:56,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:57:58,579 INFO L130 PetriNetUnfolder]: 10864/16522 cut-off events. [2023-01-28 06:57:58,579 INFO L131 PetriNetUnfolder]: For 452829/462901 co-relation queries the response was YES. [2023-01-28 06:57:58,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111515 conditions, 16522 events. 10864/16522 cut-off events. For 452829/462901 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 115632 event pairs, 1956 based on Foata normal form. 5530/21534 useless extension candidates. Maximal degree in co-relation 111452. Up to 11110 conditions per place. [2023-01-28 06:57:58,705 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 375 selfloop transitions, 10 changer transitions 74/529 dead transitions. [2023-01-28 06:57:58,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 529 transitions, 12169 flow [2023-01-28 06:57:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 06:57:58,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 06:57:58,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 605 transitions. [2023-01-28 06:57:58,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2023-01-28 06:57:58,707 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 605 transitions. [2023-01-28 06:57:58,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 605 transitions. [2023-01-28 06:57:58,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:57:58,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 605 transitions. [2023-01-28 06:57:58,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:58,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:58,710 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:58,710 INFO L175 Difference]: Start difference. First operand has 115 places, 263 transitions, 5511 flow. Second operand 5 states and 605 transitions. [2023-01-28 06:57:58,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 529 transitions, 12169 flow [2023-01-28 06:57:59,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 529 transitions, 12107 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-01-28 06:57:59,269 INFO L231 Difference]: Finished difference. Result has 114 places, 254 transitions, 5285 flow [2023-01-28 06:57:59,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5110, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5285, PETRI_PLACES=114, PETRI_TRANSITIONS=254} [2023-01-28 06:57:59,269 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2023-01-28 06:57:59,270 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 254 transitions, 5285 flow [2023-01-28 06:57:59,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:59,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:57:59,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:57:59,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 06:57:59,270 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:57:59,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:57:59,270 INFO L85 PathProgramCache]: Analyzing trace with hash -597741335, now seen corresponding path program 1 times [2023-01-28 06:57:59,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:57:59,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559263137] [2023-01-28 06:57:59,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:57:59,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:57:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:57:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:57:59,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:57:59,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559263137] [2023-01-28 06:57:59,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559263137] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:57:59,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:57:59,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:57:59,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951353795] [2023-01-28 06:57:59,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:57:59,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:57:59,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:57:59,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:57:59,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:57:59,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 235 [2023-01-28 06:57:59,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 254 transitions, 5285 flow. Second operand has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:57:59,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:57:59,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 235 [2023-01-28 06:57:59,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:01,485 INFO L130 PetriNetUnfolder]: 8408/13257 cut-off events. [2023-01-28 06:58:01,485 INFO L131 PetriNetUnfolder]: For 392495/402003 co-relation queries the response was YES. [2023-01-28 06:58:01,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98457 conditions, 13257 events. 8408/13257 cut-off events. For 392495/402003 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 95782 event pairs, 503 based on Foata normal form. 4870/17740 useless extension candidates. Maximal degree in co-relation 98395. Up to 5449 conditions per place. [2023-01-28 06:58:01,586 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 422 selfloop transitions, 18 changer transitions 137/635 dead transitions. [2023-01-28 06:58:01,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 635 transitions, 14742 flow [2023-01-28 06:58:01,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:58:01,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:58:01,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 848 transitions. [2023-01-28 06:58:01,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155015197568389 [2023-01-28 06:58:01,588 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 848 transitions. [2023-01-28 06:58:01,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 848 transitions. [2023-01-28 06:58:01,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:01,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 848 transitions. [2023-01-28 06:58:01,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:01,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:01,593 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:01,593 INFO L175 Difference]: Start difference. First operand has 114 places, 254 transitions, 5285 flow. Second operand 7 states and 848 transitions. [2023-01-28 06:58:01,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 635 transitions, 14742 flow [2023-01-28 06:58:01,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 635 transitions, 14334 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-01-28 06:58:01,950 INFO L231 Difference]: Finished difference. Result has 120 places, 221 transitions, 4449 flow [2023-01-28 06:58:01,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4236, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4449, PETRI_PLACES=120, PETRI_TRANSITIONS=221} [2023-01-28 06:58:01,950 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 78 predicate places. [2023-01-28 06:58:01,951 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 221 transitions, 4449 flow [2023-01-28 06:58:01,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:01,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:01,951 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] [2023-01-28 06:58:01,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 06:58:01,951 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:58:01,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:01,952 INFO L85 PathProgramCache]: Analyzing trace with hash -989767449, now seen corresponding path program 1 times [2023-01-28 06:58:01,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:01,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817706168] [2023-01-28 06:58:01,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:01,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:02,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:02,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817706168] [2023-01-28 06:58:02,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817706168] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:02,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:02,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:58:02,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665221989] [2023-01-28 06:58:02,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:02,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:58:02,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:02,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:58:02,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:58:02,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 06:58:02,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 221 transitions, 4449 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:02,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:02,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 06:58:02,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:05,748 INFO L130 PetriNetUnfolder]: 14311/22452 cut-off events. [2023-01-28 06:58:05,748 INFO L131 PetriNetUnfolder]: For 394141/394141 co-relation queries the response was YES. [2023-01-28 06:58:05,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175294 conditions, 22452 events. 14311/22452 cut-off events. For 394141/394141 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 159215 event pairs, 2880 based on Foata normal form. 110/22562 useless extension candidates. Maximal degree in co-relation 175230. Up to 11813 conditions per place. [2023-01-28 06:58:05,881 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 181 selfloop transitions, 60 changer transitions 130/371 dead transitions. [2023-01-28 06:58:05,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 371 transitions, 7350 flow [2023-01-28 06:58:05,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:58:05,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:58:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 767 transitions. [2023-01-28 06:58:05,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662613981762918 [2023-01-28 06:58:05,883 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 767 transitions. [2023-01-28 06:58:05,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 767 transitions. [2023-01-28 06:58:05,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:05,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 767 transitions. [2023-01-28 06:58:05,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.57142857142857) internal successors, (767), 7 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:05,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:05,886 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:05,886 INFO L175 Difference]: Start difference. First operand has 120 places, 221 transitions, 4449 flow. Second operand 7 states and 767 transitions. [2023-01-28 06:58:05,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 371 transitions, 7350 flow [2023-01-28 06:58:08,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 371 transitions, 7203 flow, removed 53 selfloop flow, removed 4 redundant places. [2023-01-28 06:58:08,258 INFO L231 Difference]: Finished difference. Result has 126 places, 176 transitions, 3669 flow [2023-01-28 06:58:08,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4396, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3669, PETRI_PLACES=126, PETRI_TRANSITIONS=176} [2023-01-28 06:58:08,258 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2023-01-28 06:58:08,258 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 176 transitions, 3669 flow [2023-01-28 06:58:08,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:08,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:08,259 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] [2023-01-28 06:58:08,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 06:58:08,259 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:58:08,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:08,259 INFO L85 PathProgramCache]: Analyzing trace with hash -706237089, now seen corresponding path program 1 times [2023-01-28 06:58:08,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:08,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145390758] [2023-01-28 06:58:08,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:08,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:08,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:08,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145390758] [2023-01-28 06:58:08,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145390758] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:08,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:08,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:58:08,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333308246] [2023-01-28 06:58:08,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:08,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 06:58:08,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:08,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 06:58:08,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 06:58:08,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 235 [2023-01-28 06:58:08,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 176 transitions, 3669 flow. Second operand has 6 states, 6 states have (on average 111.16666666666667) internal successors, (667), 6 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:08,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:08,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 235 [2023-01-28 06:58:08,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:09,337 INFO L130 PetriNetUnfolder]: 2754/4742 cut-off events. [2023-01-28 06:58:09,337 INFO L131 PetriNetUnfolder]: For 125368/127204 co-relation queries the response was YES. [2023-01-28 06:58:09,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34084 conditions, 4742 events. 2754/4742 cut-off events. For 125368/127204 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 31514 event pairs, 197 based on Foata normal form. 1115/5722 useless extension candidates. Maximal degree in co-relation 34017. Up to 1759 conditions per place. [2023-01-28 06:58:09,361 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 248 selfloop transitions, 17 changer transitions 102/401 dead transitions. [2023-01-28 06:58:09,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 401 transitions, 9010 flow [2023-01-28 06:58:09,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:58:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:58:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 849 transitions. [2023-01-28 06:58:09,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161094224924012 [2023-01-28 06:58:09,362 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 849 transitions. [2023-01-28 06:58:09,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 849 transitions. [2023-01-28 06:58:09,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:09,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 849 transitions. [2023-01-28 06:58:09,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.28571428571429) internal successors, (849), 7 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:09,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:09,366 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:09,366 INFO L175 Difference]: Start difference. First operand has 126 places, 176 transitions, 3669 flow. Second operand 7 states and 849 transitions. [2023-01-28 06:58:09,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 401 transitions, 9010 flow [2023-01-28 06:58:09,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 401 transitions, 8214 flow, removed 73 selfloop flow, removed 14 redundant places. [2023-01-28 06:58:09,489 INFO L231 Difference]: Finished difference. Result has 114 places, 148 transitions, 2661 flow [2023-01-28 06:58:09,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2707, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2661, PETRI_PLACES=114, PETRI_TRANSITIONS=148} [2023-01-28 06:58:09,489 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2023-01-28 06:58:09,490 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 148 transitions, 2661 flow [2023-01-28 06:58:09,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.16666666666667) internal successors, (667), 6 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:09,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:09,490 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] [2023-01-28 06:58:09,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 06:58:09,490 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:58:09,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:09,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2136738546, now seen corresponding path program 1 times [2023-01-28 06:58:09,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:09,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844862479] [2023-01-28 06:58:09,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:09,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:09,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:09,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844862479] [2023-01-28 06:58:09,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844862479] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:09,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:09,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:58:09,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698284036] [2023-01-28 06:58:09,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:09,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 06:58:09,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:09,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 06:58:09,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 06:58:09,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 235 [2023-01-28 06:58:09,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 148 transitions, 2661 flow. Second operand has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:09,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:09,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 235 [2023-01-28 06:58:09,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:10,967 INFO L130 PetriNetUnfolder]: 4500/7871 cut-off events. [2023-01-28 06:58:10,967 INFO L131 PetriNetUnfolder]: For 115537/115537 co-relation queries the response was YES. [2023-01-28 06:58:10,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56871 conditions, 7871 events. 4500/7871 cut-off events. For 115537/115537 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 54850 event pairs, 570 based on Foata normal form. 16/7887 useless extension candidates. Maximal degree in co-relation 56828. Up to 2884 conditions per place. [2023-01-28 06:58:11,008 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 109 selfloop transitions, 47 changer transitions 192/348 dead transitions. [2023-01-28 06:58:11,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 348 transitions, 6293 flow [2023-01-28 06:58:11,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:58:11,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:58:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 767 transitions. [2023-01-28 06:58:11,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662613981762918 [2023-01-28 06:58:11,009 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 767 transitions. [2023-01-28 06:58:11,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 767 transitions. [2023-01-28 06:58:11,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:11,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 767 transitions. [2023-01-28 06:58:11,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.57142857142857) internal successors, (767), 7 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:11,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:11,012 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:11,012 INFO L175 Difference]: Start difference. First operand has 114 places, 148 transitions, 2661 flow. Second operand 7 states and 767 transitions. [2023-01-28 06:58:11,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 348 transitions, 6293 flow [2023-01-28 06:58:11,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 348 transitions, 5950 flow, removed 133 selfloop flow, removed 6 redundant places. [2023-01-28 06:58:11,564 INFO L231 Difference]: Finished difference. Result has 117 places, 107 transitions, 1923 flow [2023-01-28 06:58:11,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1923, PETRI_PLACES=117, PETRI_TRANSITIONS=107} [2023-01-28 06:58:11,564 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 75 predicate places. [2023-01-28 06:58:11,564 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 107 transitions, 1923 flow [2023-01-28 06:58:11,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:11,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:11,565 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] [2023-01-28 06:58:11,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 06:58:11,565 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:58:11,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:11,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1212472198, now seen corresponding path program 2 times [2023-01-28 06:58:11,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:11,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384985399] [2023-01-28 06:58:11,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:11,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:11,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:11,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:11,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384985399] [2023-01-28 06:58:11,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384985399] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:11,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:11,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:58:11,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719108164] [2023-01-28 06:58:11,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:11,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:58:11,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:11,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:58:11,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:58:11,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 235 [2023-01-28 06:58:11,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 107 transitions, 1923 flow. Second operand has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:11,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:11,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 235 [2023-01-28 06:58:11,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:12,049 INFO L130 PetriNetUnfolder]: 1239/2224 cut-off events. [2023-01-28 06:58:12,049 INFO L131 PetriNetUnfolder]: For 34709/34996 co-relation queries the response was YES. [2023-01-28 06:58:12,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14868 conditions, 2224 events. 1239/2224 cut-off events. For 34709/34996 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13419 event pairs, 120 based on Foata normal form. 219/2389 useless extension candidates. Maximal degree in co-relation 14825. Up to 791 conditions per place. [2023-01-28 06:58:12,059 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 33 selfloop transitions, 17 changer transitions 164/218 dead transitions. [2023-01-28 06:58:12,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 218 transitions, 4472 flow [2023-01-28 06:58:12,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 06:58:12,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 06:58:12,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 936 transitions. [2023-01-28 06:58:12,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2023-01-28 06:58:12,061 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 936 transitions. [2023-01-28 06:58:12,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 936 transitions. [2023-01-28 06:58:12,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:12,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 936 transitions. [2023-01-28 06:58:12,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:12,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:12,065 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:12,065 INFO L175 Difference]: Start difference. First operand has 117 places, 107 transitions, 1923 flow. Second operand 8 states and 936 transitions. [2023-01-28 06:58:12,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 218 transitions, 4472 flow [2023-01-28 06:58:12,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 218 transitions, 4228 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-01-28 06:58:12,112 INFO L231 Difference]: Finished difference. Result has 116 places, 41 transitions, 454 flow [2023-01-28 06:58:12,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=454, PETRI_PLACES=116, PETRI_TRANSITIONS=41} [2023-01-28 06:58:12,113 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 74 predicate places. [2023-01-28 06:58:12,113 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 41 transitions, 454 flow [2023-01-28 06:58:12,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:12,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:12,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:12,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 06:58:12,113 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:58:12,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:12,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2145444237, now seen corresponding path program 1 times [2023-01-28 06:58:12,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:12,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73645759] [2023-01-28 06:58:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:12,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 06:58:12,141 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 06:58:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 06:58:12,192 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 06:58:12,192 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 06:58:12,193 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-01-28 06:58:12,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-01-28 06:58:12,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-01-28 06:58:12,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-01-28 06:58:12,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-01-28 06:58:12,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-01-28 06:58:12,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-01-28 06:58:12,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 06:58:12,196 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:12,201 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 06:58:12,201 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 06:58:12,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:58:12 BasicIcfg [2023-01-28 06:58:12,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 06:58:12,256 INFO L158 Benchmark]: Toolchain (without parser) took 63611.64ms. Allocated memory was 358.6MB in the beginning and 11.7GB in the end (delta: 11.4GB). Free memory was 313.7MB in the beginning and 9.4GB in the end (delta: -9.1GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2023-01-28 06:58:12,257 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 313.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:58:12,257 INFO L158 Benchmark]: CACSL2BoogieTranslator took 524.79ms. Allocated memory is still 358.6MB. Free memory was 313.3MB in the beginning and 290.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-28 06:58:12,257 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.87ms. Allocated memory is still 358.6MB. Free memory was 290.2MB in the beginning and 287.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:58:12,257 INFO L158 Benchmark]: Boogie Preprocessor took 32.26ms. Allocated memory is still 358.6MB. Free memory was 287.3MB in the beginning and 285.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:58:12,257 INFO L158 Benchmark]: RCFGBuilder took 713.05ms. Allocated memory was 358.6MB in the beginning and 455.1MB in the end (delta: 96.5MB). Free memory was 285.2MB in the beginning and 415.6MB in the end (delta: -130.4MB). Peak memory consumption was 34.8MB. Max. memory is 16.0GB. [2023-01-28 06:58:12,258 INFO L158 Benchmark]: TraceAbstraction took 62286.83ms. Allocated memory was 455.1MB in the beginning and 11.7GB in the end (delta: 11.3GB). Free memory was 415.6MB in the beginning and 9.4GB in the end (delta: -9.0GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2023-01-28 06:58:12,259 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 313.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 524.79ms. Allocated memory is still 358.6MB. Free memory was 313.3MB in the beginning and 290.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.87ms. Allocated memory is still 358.6MB. Free memory was 290.2MB in the beginning and 287.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.26ms. Allocated memory is still 358.6MB. Free memory was 287.3MB in the beginning and 285.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 713.05ms. Allocated memory was 358.6MB in the beginning and 455.1MB in the end (delta: 96.5MB). Free memory was 285.2MB in the beginning and 415.6MB in the end (delta: -130.4MB). Peak memory consumption was 34.8MB. Max. memory is 16.0GB. * TraceAbstraction took 62286.83ms. Allocated memory was 455.1MB in the beginning and 11.7GB in the end (delta: 11.3GB). Free memory was 415.6MB in the beginning and 9.4GB in the end (delta: -9.0GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 136 PlacesBefore, 42 PlacesAfterwards, 125 TransitionsBefore, 30 TransitionsAfterwards, 2936 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 106 TotalNumberOfCompositions, 6820 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3180, independent: 3000, independent conditional: 0, independent unconditional: 3000, dependent: 180, dependent conditional: 0, dependent unconditional: 180, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1541, independent: 1507, independent conditional: 0, independent unconditional: 1507, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3180, independent: 1493, independent conditional: 0, independent unconditional: 1493, dependent: 146, dependent conditional: 0, dependent unconditional: 146, unknown: 1541, unknown conditional: 0, unknown unconditional: 1541] , Statistics on independence cache: Total cache size (in pairs): 128, Positive cache size: 111, Positive conditional cache size: 0, Positive unconditional cache size: 111, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p3_EAX = 0; [L714] 0 int __unbuffered_p3_EBX = 0; [L716] 0 int a = 0; [L718] 0 int b = 0; [L719] 0 _Bool main$tmp_guard0; [L720] 0 _Bool main$tmp_guard1; [L722] 0 int x = 0; [L724] 0 int y = 0; [L726] 0 int z = 0; [L727] 0 _Bool z$flush_delayed; [L728] 0 int z$mem_tmp; [L729] 0 _Bool z$r_buff0_thd0; [L730] 0 _Bool z$r_buff0_thd1; [L731] 0 _Bool z$r_buff0_thd2; [L732] 0 _Bool z$r_buff0_thd3; [L733] 0 _Bool z$r_buff0_thd4; [L734] 0 _Bool z$r_buff1_thd0; [L735] 0 _Bool z$r_buff1_thd1; [L736] 0 _Bool z$r_buff1_thd2; [L737] 0 _Bool z$r_buff1_thd3; [L738] 0 _Bool z$r_buff1_thd4; [L739] 0 _Bool z$read_delayed; [L740] 0 int *z$read_delayed_var; [L741] 0 int z$w_buff0; [L742] 0 _Bool z$w_buff0_used; [L743] 0 int z$w_buff1; [L744] 0 _Bool z$w_buff1_used; [L745] 0 _Bool weak$$choice0; [L746] 0 _Bool weak$$choice2; [L844] 0 pthread_t t1253; [L845] FCALL, FORK 0 pthread_create(&t1253, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1253, ((void *)0), P0, ((void *)0))=-1, t1253={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L846] 0 pthread_t t1254; [L847] FCALL, FORK 0 pthread_create(&t1254, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1254, ((void *)0), P1, ((void *)0))=0, t1253={5:0}, t1254={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L848] 0 pthread_t t1255; [L849] FCALL, FORK 0 pthread_create(&t1255, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1255, ((void *)0), P2, ((void *)0))=1, t1253={5:0}, t1254={6:0}, t1255={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L850] 0 pthread_t t1256; [L851] FCALL, FORK 0 pthread_create(&t1256, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1256, ((void *)0), P3, ((void *)0))=2, t1253={5:0}, t1254={6:0}, t1255={7:0}, t1256={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L800] 4 z$w_buff1 = z$w_buff0 [L801] 4 z$w_buff0 = 2 [L802] 4 z$w_buff1_used = z$w_buff0_used [L803] 4 z$w_buff0_used = (_Bool)1 [L804] CALL 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 4 !(!expression) [L804] RET 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L805] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L806] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L807] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L808] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L809] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L810] 4 z$r_buff0_thd4 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L813] 4 a = 1 [L816] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L819] 4 __unbuffered_p3_EBX = b VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L750] 1 b = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L753] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L765] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L768] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L780] 3 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L783] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=1] [L786] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L787] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L788] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L789] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L790] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=1] [L822] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L823] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L824] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L825] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L826] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=2] [L773] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L775] 2 return 0; [L793] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L795] 3 return 0; [L758] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L760] 1 return 0; [L829] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L831] 4 return 0; [L853] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L855] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L855] RET 0 assume_abort_if_not(main$tmp_guard0) [L857] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L858] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L859] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L860] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L861] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, t1253={5:0}, t1254={6:0}, t1255={7:0}, t1256={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=2] [L864] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L865] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L866] 0 z$flush_delayed = weak$$choice2 [L867] 0 z$mem_tmp = z [L868] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L869] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L870] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L871] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L872] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L873] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L874] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L875] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L876] 0 z = z$flush_delayed ? z$mem_tmp : z [L877] 0 z$flush_delayed = (_Bool)0 [L879] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 845]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 165 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 62.1s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 49.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 882 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 882 mSDsluCounter, 392 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 264 mSDsCounter, 131 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3115 IncrementalHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 131 mSolverCounterUnsat, 128 mSDtfsCounter, 3115 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5526occurred in iteration=11, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 342 NumberOfCodeBlocks, 342 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 297 ConstructedInterpolants, 0 QuantifiedInterpolants, 3488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-01-28 06:58:12,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...