./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:22:29,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:22:29,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:22:29,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:22:29,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:22:29,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:22:29,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:22:29,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:22:29,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:22:29,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:22:29,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:22:29,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:22:29,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:22:29,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:22:29,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:22:29,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:22:29,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:22:29,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:22:29,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:22:29,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:22:29,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:22:29,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:22:29,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:22:29,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:22:29,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:22:29,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:22:29,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:22:29,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:22:29,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:22:29,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:22:29,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:22:29,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:22:29,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:22:29,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:22:29,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:22:29,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:22:29,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:22:29,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:22:29,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:22:29,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:22:29,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:22:29,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:22:29,233 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:22:29,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:22:29,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:22:29,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:22:29,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:22:29,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:22:29,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:22:29,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:22:29,237 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:22:29,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:22:29,238 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:22:29,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:22:29,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:22:29,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:22:29,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:22:29,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:22:29,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:22:29,239 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:22:29,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:22:29,240 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:22:29,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:22:29,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:22:29,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:22:29,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:22:29,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:22:29,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:22:29,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:22:29,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:22:29,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:22:29,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:22:29,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:22:29,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:22:29,242 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:22:29,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:22:29,243 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:22:29,243 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:22:29,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:22:29,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:22:29,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:22:29,535 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:22:29,535 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:22:29,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-08-30 23:22:30,683 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:22:30,923 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:22:30,924 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-08-30 23:22:30,939 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b46daa0f/250ccc8cd35f46629b3244d824e288bd/FLAG51b3b3998 [2023-08-30 23:22:30,951 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b46daa0f/250ccc8cd35f46629b3244d824e288bd [2023-08-30 23:22:30,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:22:30,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:22:30,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:22:30,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:22:30,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:22:30,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:22:30" (1/1) ... [2023-08-30 23:22:30,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651c1028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:30, skipping insertion in model container [2023-08-30 23:22:30,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:22:30" (1/1) ... [2023-08-30 23:22:30,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:22:31,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:22:31,156 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/safe035_power.i[947,960] [2023-08-30 23:22:31,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:22:31,435 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:22:31,446 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/safe035_power.i[947,960] [2023-08-30 23:22:31,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:22:31,562 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:22:31,562 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:22:31,568 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:22:31,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:31 WrapperNode [2023-08-30 23:22:31,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:22:31,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:22:31,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:22:31,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:22:31,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:31" (1/1) ... [2023-08-30 23:22:31,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:31" (1/1) ... [2023-08-30 23:22:31,648 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 173 [2023-08-30 23:22:31,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:22:31,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:22:31,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:22:31,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:22:31,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:31" (1/1) ... [2023-08-30 23:22:31,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:31" (1/1) ... [2023-08-30 23:22:31,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:31" (1/1) ... [2023-08-30 23:22:31,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:31" (1/1) ... [2023-08-30 23:22:31,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:31" (1/1) ... [2023-08-30 23:22:31,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:31" (1/1) ... [2023-08-30 23:22:31,717 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:31" (1/1) ... [2023-08-30 23:22:31,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:31" (1/1) ... [2023-08-30 23:22:31,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:22:31,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:22:31,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:22:31,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:22:31,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:31" (1/1) ... [2023-08-30 23:22:31,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:22:31,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:22:31,766 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) [2023-08-30 23:22:31,796 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 [2023-08-30 23:22:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:22:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:22:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:22:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:22:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:22:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 23:22:31,812 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 23:22:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 23:22:31,812 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 23:22:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 23:22:31,812 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 23:22:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:22:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:22:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:22:31,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:22:31,815 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:22:31,980 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:22:31,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:22:32,445 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:22:32,632 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:22:32,632 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:22:32,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:22:32 BoogieIcfgContainer [2023-08-30 23:22:32,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:22:32,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:22:32,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:22:32,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:22:32,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:22:30" (1/3) ... [2023-08-30 23:22:32,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7f04a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:22:32, skipping insertion in model container [2023-08-30 23:22:32,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:31" (2/3) ... [2023-08-30 23:22:32,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7f04a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:22:32, skipping insertion in model container [2023-08-30 23:22:32,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:22:32" (3/3) ... [2023-08-30 23:22:32,641 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-08-30 23:22:32,647 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:22:32,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:22:32,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 23:22:32,656 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:22:32,728 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 23:22:32,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 239 flow [2023-08-30 23:22:32,822 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2023-08-30 23:22:32,822 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:22:32,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-30 23:22:32,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 112 transitions, 239 flow [2023-08-30 23:22:32,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 109 transitions, 227 flow [2023-08-30 23:22:32,838 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:22:32,856 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 109 transitions, 227 flow [2023-08-30 23:22:32,860 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 109 transitions, 227 flow [2023-08-30 23:22:32,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 109 transitions, 227 flow [2023-08-30 23:22:32,907 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2023-08-30 23:22:32,907 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:22:32,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-30 23:22:32,911 INFO L119 LiptonReduction]: Number of co-enabled transitions 2202 [2023-08-30 23:22:37,122 INFO L134 LiptonReduction]: Checked pairs total: 6197 [2023-08-30 23:22:37,123 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-30 23:22:37,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:22:37,141 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=true, 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;@694b66ca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:22:37,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 23:22:37,146 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-08-30 23:22:37,146 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:22:37,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:37,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:37,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:37,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:37,152 INFO L85 PathProgramCache]: Analyzing trace with hash 243412563, now seen corresponding path program 1 times [2023-08-30 23:22:37,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:37,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103391916] [2023-08-30 23:22:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:37,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:37,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:37,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103391916] [2023-08-30 23:22:37,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103391916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:37,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:37,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:22:37,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907466204] [2023-08-30 23:22:37,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:37,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:22:37,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:37,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:22:37,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:22:37,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-30 23:22:37,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2023-08-30 23:22:37,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:37,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-30 23:22:37,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:38,454 INFO L130 PetriNetUnfolder]: 2147/3120 cut-off events. [2023-08-30 23:22:38,455 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-08-30 23:22:38,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6315 conditions, 3120 events. 2147/3120 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14344 event pairs, 322 based on Foata normal form. 0/2939 useless extension candidates. Maximal degree in co-relation 6304. Up to 2576 conditions per place. [2023-08-30 23:22:38,472 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 33 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-08-30 23:22:38,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 159 flow [2023-08-30 23:22:38,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:22:38,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:22:38,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-08-30 23:22:38,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5129449838187702 [2023-08-30 23:22:38,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-08-30 23:22:38,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-08-30 23:22:38,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:38,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-08-30 23:22:38,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-08-30 23:22:38,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-30 23:22:38,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-30 23:22:38,499 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 61 flow. Second operand 3 states and 317 transitions. [2023-08-30 23:22:38,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 159 flow [2023-08-30 23:22:38,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 23:22:38,503 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 58 flow [2023-08-30 23:22:38,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-08-30 23:22:38,508 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-08-30 23:22:38,508 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 58 flow [2023-08-30 23:22:38,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2023-08-30 23:22:38,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:38,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:38,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:22:38,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:38,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:38,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1991260440, now seen corresponding path program 1 times [2023-08-30 23:22:38,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:38,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146695136] [2023-08-30 23:22:38,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:38,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:39,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:39,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146695136] [2023-08-30 23:22:39,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146695136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:39,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:39,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:22:39,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382604027] [2023-08-30 23:22:39,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:39,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:22:39,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:39,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:22:39,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:22:39,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-08-30 23:22:39,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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) [2023-08-30 23:22:39,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:39,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-08-30 23:22:39,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:39,610 INFO L130 PetriNetUnfolder]: 1686/2503 cut-off events. [2023-08-30 23:22:39,610 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-30 23:22:39,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5164 conditions, 2503 events. 1686/2503 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11342 event pairs, 542 based on Foata normal form. 6/2509 useless extension candidates. Maximal degree in co-relation 5154. Up to 2419 conditions per place. [2023-08-30 23:22:39,623 INFO L137 encePairwiseOnDemand]: 202/206 looper letters, 33 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-08-30 23:22:39,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 162 flow [2023-08-30 23:22:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:22:39,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:22:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2023-08-30 23:22:39,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064724919093851 [2023-08-30 23:22:39,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2023-08-30 23:22:39,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2023-08-30 23:22:39,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:39,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2023-08-30 23:22:39,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2023-08-30 23:22:39,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-30 23:22:39,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-30 23:22:39,635 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 58 flow. Second operand 3 states and 313 transitions. [2023-08-30 23:22:39,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 162 flow [2023-08-30 23:22:39,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:22:39,637 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 73 flow [2023-08-30 23:22:39,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-08-30 23:22:39,638 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-08-30 23:22:39,639 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 73 flow [2023-08-30 23:22:39,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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) [2023-08-30 23:22:39,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:39,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:39,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:22:39,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:39,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1599530495, now seen corresponding path program 1 times [2023-08-30 23:22:39,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:39,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246499616] [2023-08-30 23:22:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:39,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:39,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:39,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246499616] [2023-08-30 23:22:39,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246499616] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:39,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:39,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:22:39,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255424789] [2023-08-30 23:22:39,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:39,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:22:39,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:39,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:22:39,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:22:39,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-30 23:22:39,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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) [2023-08-30 23:22:39,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:39,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-30 23:22:39,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:40,293 INFO L130 PetriNetUnfolder]: 1466/2169 cut-off events. [2023-08-30 23:22:40,293 INFO L131 PetriNetUnfolder]: For 318/318 co-relation queries the response was YES. [2023-08-30 23:22:40,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4783 conditions, 2169 events. 1466/2169 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9230 event pairs, 662 based on Foata normal form. 84/2252 useless extension candidates. Maximal degree in co-relation 4772. Up to 1189 conditions per place. [2023-08-30 23:22:40,304 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 34 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-30 23:22:40,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 169 flow [2023-08-30 23:22:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:22:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:22:40,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-08-30 23:22:40,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080906148867314 [2023-08-30 23:22:40,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-08-30 23:22:40,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-08-30 23:22:40,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:40,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-08-30 23:22:40,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2023-08-30 23:22:40,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-30 23:22:40,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-30 23:22:40,310 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 73 flow. Second operand 3 states and 314 transitions. [2023-08-30 23:22:40,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 169 flow [2023-08-30 23:22:40,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:22:40,312 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 78 flow [2023-08-30 23:22:40,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-30 23:22:40,312 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-08-30 23:22:40,313 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 78 flow [2023-08-30 23:22:40,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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) [2023-08-30 23:22:40,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:40,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:40,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:22:40,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:40,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:40,314 INFO L85 PathProgramCache]: Analyzing trace with hash -576501497, now seen corresponding path program 1 times [2023-08-30 23:22:40,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:40,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716121579] [2023-08-30 23:22:40,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:40,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:41,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:41,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716121579] [2023-08-30 23:22:41,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716121579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:41,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:41,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:22:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556805818] [2023-08-30 23:22:41,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:41,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:22:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:41,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:22:41,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:22:41,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-08-30 23:22:41,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 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) [2023-08-30 23:22:41,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:41,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-08-30 23:22:41,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:41,897 INFO L130 PetriNetUnfolder]: 2017/2976 cut-off events. [2023-08-30 23:22:41,897 INFO L131 PetriNetUnfolder]: For 498/498 co-relation queries the response was YES. [2023-08-30 23:22:41,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6805 conditions, 2976 events. 2017/2976 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 13968 event pairs, 1046 based on Foata normal form. 30/3005 useless extension candidates. Maximal degree in co-relation 6792. Up to 2320 conditions per place. [2023-08-30 23:22:41,926 INFO L137 encePairwiseOnDemand]: 194/206 looper letters, 40 selfloop transitions, 21 changer transitions 0/62 dead transitions. [2023-08-30 23:22:41,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 281 flow [2023-08-30 23:22:41,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:22:41,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:22:41,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 576 transitions. [2023-08-30 23:22:41,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46601941747572817 [2023-08-30 23:22:41,929 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 576 transitions. [2023-08-30 23:22:41,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 576 transitions. [2023-08-30 23:22:41,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:41,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 576 transitions. [2023-08-30 23:22:41,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 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) [2023-08-30 23:22:41,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 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) [2023-08-30 23:22:41,934 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 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) [2023-08-30 23:22:41,934 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 78 flow. Second operand 6 states and 576 transitions. [2023-08-30 23:22:41,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 281 flow [2023-08-30 23:22:41,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 62 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:22:41,942 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 201 flow [2023-08-30 23:22:41,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=201, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2023-08-30 23:22:41,943 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-08-30 23:22:41,943 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 201 flow [2023-08-30 23:22:41,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 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) [2023-08-30 23:22:41,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:41,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:41,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:22:41,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:41,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:41,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2100453712, now seen corresponding path program 1 times [2023-08-30 23:22:41,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:41,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838456289] [2023-08-30 23:22:41,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:41,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:42,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:42,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838456289] [2023-08-30 23:22:42,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838456289] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:42,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:42,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:22:42,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489828449] [2023-08-30 23:22:42,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:42,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:22:42,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:42,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:22:42,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:22:42,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-08-30 23:22:42,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 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) [2023-08-30 23:22:42,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:42,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-08-30 23:22:42,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:43,820 INFO L130 PetriNetUnfolder]: 3104/4623 cut-off events. [2023-08-30 23:22:43,821 INFO L131 PetriNetUnfolder]: For 2825/2825 co-relation queries the response was YES. [2023-08-30 23:22:43,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13619 conditions, 4623 events. 3104/4623 cut-off events. For 2825/2825 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 23603 event pairs, 940 based on Foata normal form. 6/4628 useless extension candidates. Maximal degree in co-relation 13603. Up to 2016 conditions per place. [2023-08-30 23:22:43,876 INFO L137 encePairwiseOnDemand]: 194/206 looper letters, 65 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2023-08-30 23:22:43,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 89 transitions, 537 flow [2023-08-30 23:22:43,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:22:43,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:22:43,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 684 transitions. [2023-08-30 23:22:43,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47434119278779474 [2023-08-30 23:22:43,879 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 684 transitions. [2023-08-30 23:22:43,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 684 transitions. [2023-08-30 23:22:43,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:43,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 684 transitions. [2023-08-30 23:22:43,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.71428571428571) internal successors, (684), 7 states have internal predecessors, (684), 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) [2023-08-30 23:22:43,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-08-30 23:22:43,884 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-08-30 23:22:43,884 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 201 flow. Second operand 7 states and 684 transitions. [2023-08-30 23:22:43,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 89 transitions, 537 flow [2023-08-30 23:22:43,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 89 transitions, 532 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 23:22:43,899 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 354 flow [2023-08-30 23:22:43,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2023-08-30 23:22:43,901 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-08-30 23:22:43,901 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 354 flow [2023-08-30 23:22:43,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 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) [2023-08-30 23:22:43,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:43,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:43,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:22:43,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:43,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:43,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1048871140, now seen corresponding path program 2 times [2023-08-30 23:22:43,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:43,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606260001] [2023-08-30 23:22:43,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:43,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:44,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:44,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606260001] [2023-08-30 23:22:44,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606260001] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:44,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:44,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:22:44,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790088367] [2023-08-30 23:22:44,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:44,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:22:44,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:44,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:22:44,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:22:44,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-08-30 23:22:44,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 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) [2023-08-30 23:22:44,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:44,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-08-30 23:22:44,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:44,853 INFO L130 PetriNetUnfolder]: 2310/3672 cut-off events. [2023-08-30 23:22:44,853 INFO L131 PetriNetUnfolder]: For 8086/8086 co-relation queries the response was YES. [2023-08-30 23:22:44,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13451 conditions, 3672 events. 2310/3672 cut-off events. For 8086/8086 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 20357 event pairs, 515 based on Foata normal form. 392/4063 useless extension candidates. Maximal degree in co-relation 13431. Up to 1342 conditions per place. [2023-08-30 23:22:44,880 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 138 selfloop transitions, 5 changer transitions 1/145 dead transitions. [2023-08-30 23:22:44,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 145 transitions, 1208 flow [2023-08-30 23:22:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:22:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:22:44,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 410 transitions. [2023-08-30 23:22:44,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975728155339806 [2023-08-30 23:22:44,883 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 410 transitions. [2023-08-30 23:22:44,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 410 transitions. [2023-08-30 23:22:44,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:44,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 410 transitions. [2023-08-30 23:22:44,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 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) [2023-08-30 23:22:44,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2023-08-30 23:22:44,886 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2023-08-30 23:22:44,886 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 354 flow. Second operand 4 states and 410 transitions. [2023-08-30 23:22:44,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 145 transitions, 1208 flow [2023-08-30 23:22:44,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 145 transitions, 1117 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-08-30 23:22:44,921 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 351 flow [2023-08-30 23:22:44,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2023-08-30 23:22:44,926 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-08-30 23:22:44,926 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 351 flow [2023-08-30 23:22:44,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 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) [2023-08-30 23:22:44,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:44,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:44,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:22:44,927 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:44,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash -393579275, now seen corresponding path program 1 times [2023-08-30 23:22:44,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:44,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197344229] [2023-08-30 23:22:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:44,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:45,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:45,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197344229] [2023-08-30 23:22:45,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197344229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:45,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:45,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:22:45,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051459302] [2023-08-30 23:22:45,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:45,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:22:45,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:45,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:22:45,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:22:45,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-08-30 23:22:45,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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) [2023-08-30 23:22:45,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:45,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-08-30 23:22:45,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:45,686 INFO L130 PetriNetUnfolder]: 1049/1792 cut-off events. [2023-08-30 23:22:45,686 INFO L131 PetriNetUnfolder]: For 3886/3886 co-relation queries the response was YES. [2023-08-30 23:22:45,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7306 conditions, 1792 events. 1049/1792 cut-off events. For 3886/3886 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9282 event pairs, 182 based on Foata normal form. 176/1967 useless extension candidates. Maximal degree in co-relation 7284. Up to 798 conditions per place. [2023-08-30 23:22:45,695 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 136 selfloop transitions, 8 changer transitions 1/146 dead transitions. [2023-08-30 23:22:45,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 146 transitions, 1167 flow [2023-08-30 23:22:45,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:22:45,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:22:45,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 514 transitions. [2023-08-30 23:22:45,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49902912621359224 [2023-08-30 23:22:45,697 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 514 transitions. [2023-08-30 23:22:45,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 514 transitions. [2023-08-30 23:22:45,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:45,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 514 transitions. [2023-08-30 23:22:45,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 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) [2023-08-30 23:22:45,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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) [2023-08-30 23:22:45,701 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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) [2023-08-30 23:22:45,701 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 351 flow. Second operand 5 states and 514 transitions. [2023-08-30 23:22:45,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 146 transitions, 1167 flow [2023-08-30 23:22:45,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 146 transitions, 1157 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 23:22:45,710 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 391 flow [2023-08-30 23:22:45,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2023-08-30 23:22:45,711 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-08-30 23:22:45,711 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 391 flow [2023-08-30 23:22:45,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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) [2023-08-30 23:22:45,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:45,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:45,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:22:45,712 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:45,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:45,712 INFO L85 PathProgramCache]: Analyzing trace with hash 720337333, now seen corresponding path program 1 times [2023-08-30 23:22:45,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:45,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807329327] [2023-08-30 23:22:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:45,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:46,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:46,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807329327] [2023-08-30 23:22:46,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807329327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:46,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:46,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 23:22:46,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226703288] [2023-08-30 23:22:46,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:46,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 23:22:46,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:46,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 23:22:46,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-30 23:22:46,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 206 [2023-08-30 23:22:46,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 391 flow. Second operand has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 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) [2023-08-30 23:22:46,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:46,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 206 [2023-08-30 23:22:46,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:47,522 INFO L130 PetriNetUnfolder]: 978/1747 cut-off events. [2023-08-30 23:22:47,523 INFO L131 PetriNetUnfolder]: For 4227/4227 co-relation queries the response was YES. [2023-08-30 23:22:47,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7483 conditions, 1747 events. 978/1747 cut-off events. For 4227/4227 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9386 event pairs, 61 based on Foata normal form. 12/1759 useless extension candidates. Maximal degree in co-relation 7459. Up to 816 conditions per place. [2023-08-30 23:22:47,534 INFO L137 encePairwiseOnDemand]: 194/206 looper letters, 81 selfloop transitions, 21 changer transitions 30/133 dead transitions. [2023-08-30 23:22:47,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 133 transitions, 1117 flow [2023-08-30 23:22:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:22:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:22:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 896 transitions. [2023-08-30 23:22:47,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48327939590075514 [2023-08-30 23:22:47,538 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 896 transitions. [2023-08-30 23:22:47,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 896 transitions. [2023-08-30 23:22:47,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:47,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 896 transitions. [2023-08-30 23:22:47,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.55555555555556) internal successors, (896), 9 states have internal predecessors, (896), 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) [2023-08-30 23:22:47,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 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) [2023-08-30 23:22:47,544 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 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) [2023-08-30 23:22:47,544 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 391 flow. Second operand 9 states and 896 transitions. [2023-08-30 23:22:47,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 133 transitions, 1117 flow [2023-08-30 23:22:47,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 133 transitions, 1011 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-08-30 23:22:47,556 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 440 flow [2023-08-30 23:22:47,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=440, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-08-30 23:22:47,558 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2023-08-30 23:22:47,558 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 440 flow [2023-08-30 23:22:47,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 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) [2023-08-30 23:22:47,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:47,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:47,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 23:22:47,559 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:47,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:47,563 INFO L85 PathProgramCache]: Analyzing trace with hash -69634631, now seen corresponding path program 2 times [2023-08-30 23:22:47,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:47,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779995809] [2023-08-30 23:22:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:47,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:49,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:49,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779995809] [2023-08-30 23:22:49,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779995809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:49,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:49,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 23:22:49,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007751373] [2023-08-30 23:22:49,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:49,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 23:22:49,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:49,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 23:22:49,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 23:22:49,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-08-30 23:22:49,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 440 flow. Second operand has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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) [2023-08-30 23:22:49,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:49,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-08-30 23:22:49,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:49,834 INFO L130 PetriNetUnfolder]: 1099/1981 cut-off events. [2023-08-30 23:22:49,834 INFO L131 PetriNetUnfolder]: For 5091/5091 co-relation queries the response was YES. [2023-08-30 23:22:49,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8689 conditions, 1981 events. 1099/1981 cut-off events. For 5091/5091 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11222 event pairs, 97 based on Foata normal form. 10/1991 useless extension candidates. Maximal degree in co-relation 8663. Up to 840 conditions per place. [2023-08-30 23:22:49,847 INFO L137 encePairwiseOnDemand]: 195/206 looper letters, 92 selfloop transitions, 23 changer transitions 23/139 dead transitions. [2023-08-30 23:22:49,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 139 transitions, 1184 flow [2023-08-30 23:22:49,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:22:49,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:22:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 788 transitions. [2023-08-30 23:22:49,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47815533980582525 [2023-08-30 23:22:49,850 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 788 transitions. [2023-08-30 23:22:49,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 788 transitions. [2023-08-30 23:22:49,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:49,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 788 transitions. [2023-08-30 23:22:49,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.5) internal successors, (788), 8 states have internal predecessors, (788), 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) [2023-08-30 23:22:49,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2023-08-30 23:22:49,858 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2023-08-30 23:22:49,858 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 440 flow. Second operand 8 states and 788 transitions. [2023-08-30 23:22:49,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 139 transitions, 1184 flow [2023-08-30 23:22:49,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 139 transitions, 1149 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 23:22:49,871 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 563 flow [2023-08-30 23:22:49,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-08-30 23:22:49,872 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-08-30 23:22:49,872 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 563 flow [2023-08-30 23:22:49,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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) [2023-08-30 23:22:49,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:49,873 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] [2023-08-30 23:22:49,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 23:22:49,873 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:49,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:49,874 INFO L85 PathProgramCache]: Analyzing trace with hash 653242567, now seen corresponding path program 1 times [2023-08-30 23:22:49,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:49,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506433181] [2023-08-30 23:22:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:49,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:50,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:50,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506433181] [2023-08-30 23:22:50,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506433181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:50,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:50,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:22:50,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031840271] [2023-08-30 23:22:50,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:50,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:22:50,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:50,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:22:50,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:22:50,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-08-30 23:22:50,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 563 flow. Second operand has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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) [2023-08-30 23:22:50,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:50,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-08-30 23:22:50,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:50,710 INFO L130 PetriNetUnfolder]: 865/1564 cut-off events. [2023-08-30 23:22:50,710 INFO L131 PetriNetUnfolder]: For 6038/6038 co-relation queries the response was YES. [2023-08-30 23:22:50,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7214 conditions, 1564 events. 865/1564 cut-off events. For 6038/6038 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8667 event pairs, 210 based on Foata normal form. 43/1606 useless extension candidates. Maximal degree in co-relation 7185. Up to 738 conditions per place. [2023-08-30 23:22:50,722 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 109 selfloop transitions, 11 changer transitions 14/135 dead transitions. [2023-08-30 23:22:50,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 135 transitions, 1364 flow [2023-08-30 23:22:50,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:22:50,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:22:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 588 transitions. [2023-08-30 23:22:50,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47572815533980584 [2023-08-30 23:22:50,753 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 588 transitions. [2023-08-30 23:22:50,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 588 transitions. [2023-08-30 23:22:50,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:50,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 588 transitions. [2023-08-30 23:22:50,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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) [2023-08-30 23:22:50,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 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) [2023-08-30 23:22:50,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 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) [2023-08-30 23:22:50,757 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 563 flow. Second operand 6 states and 588 transitions. [2023-08-30 23:22:50,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 135 transitions, 1364 flow [2023-08-30 23:22:50,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 135 transitions, 1251 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-08-30 23:22:50,767 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 519 flow [2023-08-30 23:22:50,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2023-08-30 23:22:50,767 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-08-30 23:22:50,768 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 519 flow [2023-08-30 23:22:50,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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) [2023-08-30 23:22:50,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:50,768 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] [2023-08-30 23:22:50,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 23:22:50,768 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:50,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:50,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1161937857, now seen corresponding path program 1 times [2023-08-30 23:22:50,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:50,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90758231] [2023-08-30 23:22:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:50,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:51,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:51,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90758231] [2023-08-30 23:22:51,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90758231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:51,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:51,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:22:51,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147044097] [2023-08-30 23:22:51,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:51,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:22:51,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:51,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:22:51,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:22:51,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 206 [2023-08-30 23:22:51,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 519 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 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) [2023-08-30 23:22:51,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:51,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 206 [2023-08-30 23:22:51,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:51,593 INFO L130 PetriNetUnfolder]: 1354/2377 cut-off events. [2023-08-30 23:22:51,593 INFO L131 PetriNetUnfolder]: For 8238/8238 co-relation queries the response was YES. [2023-08-30 23:22:51,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11109 conditions, 2377 events. 1354/2377 cut-off events. For 8238/8238 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13629 event pairs, 188 based on Foata normal form. 2/2379 useless extension candidates. Maximal degree in co-relation 11080. Up to 1361 conditions per place. [2023-08-30 23:22:51,604 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 65 selfloop transitions, 1 changer transitions 71/137 dead transitions. [2023-08-30 23:22:51,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 137 transitions, 1337 flow [2023-08-30 23:22:51,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:22:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:22:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 412 transitions. [2023-08-30 23:22:51,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-30 23:22:51,607 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 412 transitions. [2023-08-30 23:22:51,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 412 transitions. [2023-08-30 23:22:51,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:51,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 412 transitions. [2023-08-30 23:22:51,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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) [2023-08-30 23:22:51,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2023-08-30 23:22:51,610 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2023-08-30 23:22:51,610 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 519 flow. Second operand 4 states and 412 transitions. [2023-08-30 23:22:51,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 137 transitions, 1337 flow [2023-08-30 23:22:51,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 137 transitions, 1175 flow, removed 28 selfloop flow, removed 10 redundant places. [2023-08-30 23:22:51,628 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 353 flow [2023-08-30 23:22:51,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-08-30 23:22:51,629 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2023-08-30 23:22:51,629 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 353 flow [2023-08-30 23:22:51,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 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) [2023-08-30 23:22:51,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:51,629 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] [2023-08-30 23:22:51,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 23:22:51,630 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:51,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1198941303, now seen corresponding path program 2 times [2023-08-30 23:22:51,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:51,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814879331] [2023-08-30 23:22:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:51,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:53,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:53,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814879331] [2023-08-30 23:22:53,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814879331] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:53,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:53,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:22:53,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072054434] [2023-08-30 23:22:53,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:53,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:22:53,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:53,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:22:53,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:22:53,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 206 [2023-08-30 23:22:53,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 353 flow. Second operand has 8 states, 8 states have (on average 93.875) internal successors, (751), 8 states have internal predecessors, (751), 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) [2023-08-30 23:22:53,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:53,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 206 [2023-08-30 23:22:53,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:53,714 INFO L130 PetriNetUnfolder]: 843/1616 cut-off events. [2023-08-30 23:22:53,714 INFO L131 PetriNetUnfolder]: For 4138/4138 co-relation queries the response was YES. [2023-08-30 23:22:53,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 1616 events. 843/1616 cut-off events. For 4138/4138 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9239 event pairs, 215 based on Foata normal form. 1/1609 useless extension candidates. Maximal degree in co-relation 6833. Up to 932 conditions per place. [2023-08-30 23:22:53,722 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 53 selfloop transitions, 10 changer transitions 58/122 dead transitions. [2023-08-30 23:22:53,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 122 transitions, 996 flow [2023-08-30 23:22:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:22:53,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:22:53,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 803 transitions. [2023-08-30 23:22:53,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48725728155339804 [2023-08-30 23:22:53,725 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 803 transitions. [2023-08-30 23:22:53,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 803 transitions. [2023-08-30 23:22:53,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:53,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 803 transitions. [2023-08-30 23:22:53,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.375) internal successors, (803), 8 states have internal predecessors, (803), 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) [2023-08-30 23:22:53,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2023-08-30 23:22:53,731 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2023-08-30 23:22:53,731 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 353 flow. Second operand 8 states and 803 transitions. [2023-08-30 23:22:53,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 122 transitions, 996 flow [2023-08-30 23:22:53,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 122 transitions, 984 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 23:22:53,740 INFO L231 Difference]: Finished difference. Result has 72 places, 54 transitions, 396 flow [2023-08-30 23:22:53,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=396, PETRI_PLACES=72, PETRI_TRANSITIONS=54} [2023-08-30 23:22:53,741 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-08-30 23:22:53,741 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 54 transitions, 396 flow [2023-08-30 23:22:53,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 93.875) internal successors, (751), 8 states have internal predecessors, (751), 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) [2023-08-30 23:22:53,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:53,742 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] [2023-08-30 23:22:53,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 23:22:53,742 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:53,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:53,742 INFO L85 PathProgramCache]: Analyzing trace with hash 309582873, now seen corresponding path program 3 times [2023-08-30 23:22:53,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:53,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174531499] [2023-08-30 23:22:53,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:53,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:54,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:54,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174531499] [2023-08-30 23:22:54,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174531499] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:54,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:54,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:22:54,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12613053] [2023-08-30 23:22:54,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:54,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:22:54,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:54,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:22:54,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:22:54,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-08-30 23:22:54,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 54 transitions, 396 flow. Second operand has 8 states, 8 states have (on average 89.875) internal successors, (719), 8 states have internal predecessors, (719), 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) [2023-08-30 23:22:54,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:54,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-08-30 23:22:54,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:54,870 INFO L130 PetriNetUnfolder]: 665/1303 cut-off events. [2023-08-30 23:22:54,871 INFO L131 PetriNetUnfolder]: For 5338/5339 co-relation queries the response was YES. [2023-08-30 23:22:54,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6193 conditions, 1303 events. 665/1303 cut-off events. For 5338/5339 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7246 event pairs, 384 based on Foata normal form. 1/1293 useless extension candidates. Maximal degree in co-relation 6170. Up to 961 conditions per place. [2023-08-30 23:22:54,878 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 43 selfloop transitions, 16 changer transitions 37/97 dead transitions. [2023-08-30 23:22:54,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 97 transitions, 870 flow [2023-08-30 23:22:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:22:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:22:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 668 transitions. [2023-08-30 23:22:54,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463245492371706 [2023-08-30 23:22:54,881 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 668 transitions. [2023-08-30 23:22:54,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 668 transitions. [2023-08-30 23:22:54,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:54,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 668 transitions. [2023-08-30 23:22:54,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.42857142857143) internal successors, (668), 7 states have internal predecessors, (668), 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) [2023-08-30 23:22:54,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-08-30 23:22:54,886 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-08-30 23:22:54,886 INFO L175 Difference]: Start difference. First operand has 72 places, 54 transitions, 396 flow. Second operand 7 states and 668 transitions. [2023-08-30 23:22:54,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 97 transitions, 870 flow [2023-08-30 23:22:54,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 97 transitions, 831 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-08-30 23:22:54,895 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 442 flow [2023-08-30 23:22:54,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2023-08-30 23:22:54,895 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-08-30 23:22:54,896 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 442 flow [2023-08-30 23:22:54,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.875) internal successors, (719), 8 states have internal predecessors, (719), 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) [2023-08-30 23:22:54,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:54,896 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] [2023-08-30 23:22:54,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 23:22:54,897 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:54,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:54,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1196264807, now seen corresponding path program 4 times [2023-08-30 23:22:54,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:54,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009081003] [2023-08-30 23:22:54,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:54,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:57,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:57,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:57,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009081003] [2023-08-30 23:22:57,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009081003] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:57,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:57,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 23:22:57,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523159245] [2023-08-30 23:22:57,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:57,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 23:22:57,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:57,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 23:22:57,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-08-30 23:22:57,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-08-30 23:22:57,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 442 flow. Second operand has 12 states, 12 states have (on average 88.91666666666667) internal successors, (1067), 12 states have internal predecessors, (1067), 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) [2023-08-30 23:22:57,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:57,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-08-30 23:22:57,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:57,954 INFO L130 PetriNetUnfolder]: 677/1382 cut-off events. [2023-08-30 23:22:57,954 INFO L131 PetriNetUnfolder]: For 6604/6604 co-relation queries the response was YES. [2023-08-30 23:22:57,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6937 conditions, 1382 events. 677/1382 cut-off events. For 6604/6604 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8068 event pairs, 148 based on Foata normal form. 4/1379 useless extension candidates. Maximal degree in co-relation 6913. Up to 532 conditions per place. [2023-08-30 23:22:57,961 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 37 selfloop transitions, 11 changer transitions 81/130 dead transitions. [2023-08-30 23:22:57,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 130 transitions, 1183 flow [2023-08-30 23:22:57,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:22:57,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:22:57,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 871 transitions. [2023-08-30 23:22:57,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697950377562028 [2023-08-30 23:22:57,965 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 871 transitions. [2023-08-30 23:22:57,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 871 transitions. [2023-08-30 23:22:57,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:57,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 871 transitions. [2023-08-30 23:22:57,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.77777777777777) internal successors, (871), 9 states have internal predecessors, (871), 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) [2023-08-30 23:22:57,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 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) [2023-08-30 23:22:57,970 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 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) [2023-08-30 23:22:57,970 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 442 flow. Second operand 9 states and 871 transitions. [2023-08-30 23:22:57,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 130 transitions, 1183 flow [2023-08-30 23:22:57,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 130 transitions, 1094 flow, removed 23 selfloop flow, removed 7 redundant places. [2023-08-30 23:22:57,981 INFO L231 Difference]: Finished difference. Result has 76 places, 41 transitions, 316 flow [2023-08-30 23:22:57,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=316, PETRI_PLACES=76, PETRI_TRANSITIONS=41} [2023-08-30 23:22:57,982 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2023-08-30 23:22:57,982 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 41 transitions, 316 flow [2023-08-30 23:22:57,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 88.91666666666667) internal successors, (1067), 12 states have internal predecessors, (1067), 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) [2023-08-30 23:22:57,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:57,983 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] [2023-08-30 23:22:57,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 23:22:57,983 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:57,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:57,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1417680957, now seen corresponding path program 5 times [2023-08-30 23:22:57,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:57,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622735117] [2023-08-30 23:22:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:57,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:59,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:59,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622735117] [2023-08-30 23:22:59,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622735117] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:59,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:59,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:22:59,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859276148] [2023-08-30 23:22:59,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:59,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:22:59,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:59,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:22:59,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:22:59,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-08-30 23:22:59,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 41 transitions, 316 flow. Second operand has 8 states, 8 states have (on average 89.875) internal successors, (719), 8 states have internal predecessors, (719), 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) [2023-08-30 23:22:59,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:59,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-08-30 23:22:59,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:59,761 INFO L130 PetriNetUnfolder]: 311/625 cut-off events. [2023-08-30 23:22:59,761 INFO L131 PetriNetUnfolder]: For 3100/3100 co-relation queries the response was YES. [2023-08-30 23:22:59,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3109 conditions, 625 events. 311/625 cut-off events. For 3100/3100 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2832 event pairs, 73 based on Foata normal form. 1/618 useless extension candidates. Maximal degree in co-relation 3083. Up to 233 conditions per place. [2023-08-30 23:22:59,765 INFO L137 encePairwiseOnDemand]: 197/206 looper letters, 63 selfloop transitions, 15 changer transitions 31/110 dead transitions. [2023-08-30 23:22:59,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 110 transitions, 964 flow [2023-08-30 23:22:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:22:59,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:22:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 858 transitions. [2023-08-30 23:22:59,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627831715210356 [2023-08-30 23:22:59,769 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 858 transitions. [2023-08-30 23:22:59,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 858 transitions. [2023-08-30 23:22:59,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:59,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 858 transitions. [2023-08-30 23:22:59,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 95.33333333333333) internal successors, (858), 9 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:59,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 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) [2023-08-30 23:22:59,775 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 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) [2023-08-30 23:22:59,775 INFO L175 Difference]: Start difference. First operand has 76 places, 41 transitions, 316 flow. Second operand 9 states and 858 transitions. [2023-08-30 23:22:59,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 110 transitions, 964 flow [2023-08-30 23:22:59,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 110 transitions, 862 flow, removed 40 selfloop flow, removed 11 redundant places. [2023-08-30 23:22:59,782 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 353 flow [2023-08-30 23:22:59,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=353, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2023-08-30 23:22:59,783 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-08-30 23:22:59,783 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 353 flow [2023-08-30 23:22:59,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.875) internal successors, (719), 8 states have internal predecessors, (719), 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) [2023-08-30 23:22:59,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:59,784 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] [2023-08-30 23:22:59,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 23:22:59,784 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:22:59,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:59,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1521466457, now seen corresponding path program 6 times [2023-08-30 23:22:59,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:59,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075599815] [2023-08-30 23:22:59,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:59,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:01,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:23:01,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075599815] [2023-08-30 23:23:01,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075599815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:01,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:01,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 23:23:01,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106064485] [2023-08-30 23:23:01,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:01,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 23:23:01,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:01,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 23:23:01,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-30 23:23:01,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-08-30 23:23:01,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 353 flow. Second operand has 11 states, 11 states have (on average 88.0909090909091) internal successors, (969), 11 states have internal predecessors, (969), 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) [2023-08-30 23:23:01,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:01,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-08-30 23:23:01,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:01,950 INFO L130 PetriNetUnfolder]: 310/638 cut-off events. [2023-08-30 23:23:01,950 INFO L131 PetriNetUnfolder]: For 2302/2302 co-relation queries the response was YES. [2023-08-30 23:23:01,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 638 events. 310/638 cut-off events. For 2302/2302 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3069 event pairs, 18 based on Foata normal form. 1/634 useless extension candidates. Maximal degree in co-relation 3006. Up to 259 conditions per place. [2023-08-30 23:23:01,954 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 60 selfloop transitions, 11 changer transitions 9/81 dead transitions. [2023-08-30 23:23:01,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 81 transitions, 725 flow [2023-08-30 23:23:01,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:23:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:23:01,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2023-08-30 23:23:01,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603559870550162 [2023-08-30 23:23:01,957 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2023-08-30 23:23:01,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2023-08-30 23:23:01,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:01,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2023-08-30 23:23:01,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 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) [2023-08-30 23:23:01,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 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) [2023-08-30 23:23:01,962 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 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) [2023-08-30 23:23:01,962 INFO L175 Difference]: Start difference. First operand has 69 places, 46 transitions, 353 flow. Second operand 6 states and 569 transitions. [2023-08-30 23:23:01,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 81 transitions, 725 flow [2023-08-30 23:23:01,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 681 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-30 23:23:01,968 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 402 flow [2023-08-30 23:23:01,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2023-08-30 23:23:01,969 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2023-08-30 23:23:01,969 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 402 flow [2023-08-30 23:23:01,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 88.0909090909091) internal successors, (969), 11 states have internal predecessors, (969), 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) [2023-08-30 23:23:01,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:01,970 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] [2023-08-30 23:23:01,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 23:23:01,971 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:23:01,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:01,971 INFO L85 PathProgramCache]: Analyzing trace with hash -345399677, now seen corresponding path program 7 times [2023-08-30 23:23:01,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:01,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170117005] [2023-08-30 23:23:01,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:01,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:03,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:23:03,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:03,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170117005] [2023-08-30 23:23:03,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170117005] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:03,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:03,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 23:23:03,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633376524] [2023-08-30 23:23:03,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:03,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 23:23:03,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:03,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 23:23:03,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-30 23:23:03,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-08-30 23:23:03,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 402 flow. Second operand has 9 states, 9 states have (on average 90.55555555555556) internal successors, (815), 9 states have internal predecessors, (815), 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) [2023-08-30 23:23:03,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:03,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-08-30 23:23:03,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:03,464 INFO L130 PetriNetUnfolder]: 431/892 cut-off events. [2023-08-30 23:23:03,465 INFO L131 PetriNetUnfolder]: For 3518/3518 co-relation queries the response was YES. [2023-08-30 23:23:03,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 892 events. 431/892 cut-off events. For 3518/3518 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4700 event pairs, 154 based on Foata normal form. 1/888 useless extension candidates. Maximal degree in co-relation 4199. Up to 484 conditions per place. [2023-08-30 23:23:03,470 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 52 selfloop transitions, 7 changer transitions 31/91 dead transitions. [2023-08-30 23:23:03,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 91 transitions, 870 flow [2023-08-30 23:23:03,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:23:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:23:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 671 transitions. [2023-08-30 23:23:03,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653259361997226 [2023-08-30 23:23:03,473 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 671 transitions. [2023-08-30 23:23:03,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 671 transitions. [2023-08-30 23:23:03,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:03,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 671 transitions. [2023-08-30 23:23:03,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.85714285714286) internal successors, (671), 7 states have internal predecessors, (671), 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) [2023-08-30 23:23:03,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-08-30 23:23:03,477 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-08-30 23:23:03,478 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 402 flow. Second operand 7 states and 671 transitions. [2023-08-30 23:23:03,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 91 transitions, 870 flow [2023-08-30 23:23:03,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 91 transitions, 829 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-30 23:23:03,483 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 430 flow [2023-08-30 23:23:03,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=430, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2023-08-30 23:23:03,484 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-08-30 23:23:03,484 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 430 flow [2023-08-30 23:23:03,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 90.55555555555556) internal successors, (815), 9 states have internal predecessors, (815), 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) [2023-08-30 23:23:03,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:03,485 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] [2023-08-30 23:23:03,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 23:23:03,485 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:23:03,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:03,486 INFO L85 PathProgramCache]: Analyzing trace with hash -342773901, now seen corresponding path program 8 times [2023-08-30 23:23:03,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:03,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778719210] [2023-08-30 23:23:03,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:03,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:04,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:23:04,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:04,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778719210] [2023-08-30 23:23:04,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778719210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:04,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:04,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 23:23:04,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232729684] [2023-08-30 23:23:04,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:04,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 23:23:04,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:04,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 23:23:04,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 23:23:04,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 206 [2023-08-30 23:23:04,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 430 flow. Second operand has 10 states, 10 states have (on average 91.3) internal successors, (913), 10 states have internal predecessors, (913), 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) [2023-08-30 23:23:04,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:04,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 206 [2023-08-30 23:23:04,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:05,105 INFO L130 PetriNetUnfolder]: 368/759 cut-off events. [2023-08-30 23:23:05,106 INFO L131 PetriNetUnfolder]: For 3198/3198 co-relation queries the response was YES. [2023-08-30 23:23:05,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 759 events. 368/759 cut-off events. For 3198/3198 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3837 event pairs, 165 based on Foata normal form. 1/755 useless extension candidates. Maximal degree in co-relation 3561. Up to 418 conditions per place. [2023-08-30 23:23:05,109 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 35 selfloop transitions, 2 changer transitions 52/90 dead transitions. [2023-08-30 23:23:05,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 845 flow [2023-08-30 23:23:05,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:23:05,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:23:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2023-08-30 23:23:05,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749190938511327 [2023-08-30 23:23:05,111 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2023-08-30 23:23:05,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2023-08-30 23:23:05,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:05,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2023-08-30 23:23:05,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 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) [2023-08-30 23:23:05,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 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) [2023-08-30 23:23:05,115 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 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) [2023-08-30 23:23:05,115 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 430 flow. Second operand 6 states and 587 transitions. [2023-08-30 23:23:05,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 845 flow [2023-08-30 23:23:05,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 90 transitions, 829 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-30 23:23:05,120 INFO L231 Difference]: Finished difference. Result has 72 places, 38 transitions, 276 flow [2023-08-30 23:23:05,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=72, PETRI_TRANSITIONS=38} [2023-08-30 23:23:05,121 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-08-30 23:23:05,121 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 38 transitions, 276 flow [2023-08-30 23:23:05,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.3) internal successors, (913), 10 states have internal predecessors, (913), 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) [2023-08-30 23:23:05,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:05,122 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] [2023-08-30 23:23:05,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 23:23:05,122 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:23:05,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1741772747, now seen corresponding path program 9 times [2023-08-30 23:23:05,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:05,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675129556] [2023-08-30 23:23:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:05,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:23:07,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:07,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675129556] [2023-08-30 23:23:07,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675129556] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:07,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:07,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 23:23:07,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083052132] [2023-08-30 23:23:07,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:07,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 23:23:07,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:07,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 23:23:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 23:23:07,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-08-30 23:23:07,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 38 transitions, 276 flow. Second operand has 9 states, 9 states have (on average 90.55555555555556) internal successors, (815), 9 states have internal predecessors, (815), 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) [2023-08-30 23:23:07,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:07,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-08-30 23:23:07,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:07,372 INFO L130 PetriNetUnfolder]: 215/428 cut-off events. [2023-08-30 23:23:07,372 INFO L131 PetriNetUnfolder]: For 1959/1966 co-relation queries the response was YES. [2023-08-30 23:23:07,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 428 events. 215/428 cut-off events. For 1959/1966 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1807 event pairs, 31 based on Foata normal form. 5/430 useless extension candidates. Maximal degree in co-relation 2054. Up to 220 conditions per place. [2023-08-30 23:23:07,374 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2023-08-30 23:23:07,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 62 transitions, 592 flow [2023-08-30 23:23:07,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:23:07,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:23:07,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 744 transitions. [2023-08-30 23:23:07,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45145631067961167 [2023-08-30 23:23:07,376 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 744 transitions. [2023-08-30 23:23:07,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 744 transitions. [2023-08-30 23:23:07,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:07,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 744 transitions. [2023-08-30 23:23:07,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2023-08-30 23:23:07,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2023-08-30 23:23:07,380 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2023-08-30 23:23:07,380 INFO L175 Difference]: Start difference. First operand has 72 places, 38 transitions, 276 flow. Second operand 8 states and 744 transitions. [2023-08-30 23:23:07,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 62 transitions, 592 flow [2023-08-30 23:23:07,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 552 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-08-30 23:23:07,384 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2023-08-30 23:23:07,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2023-08-30 23:23:07,384 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2023-08-30 23:23:07,384 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2023-08-30 23:23:07,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 90.55555555555556) internal successors, (815), 9 states have internal predecessors, (815), 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) [2023-08-30 23:23:07,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-30 23:23:07,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-30 23:23:07,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-30 23:23:07,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-30 23:23:07,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-30 23:23:07,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-30 23:23:07,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 23:23:07,388 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 23:23:07,392 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:23:07,392 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:23:07,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:23:07 BasicIcfg [2023-08-30 23:23:07,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:23:07,396 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:23:07,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:23:07,396 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:23:07,397 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:22:32" (3/4) ... [2023-08-30 23:23:07,399 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 23:23:07,403 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 23:23:07,403 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 23:23:07,403 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 23:23:07,410 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2023-08-30 23:23:07,410 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-08-30 23:23:07,410 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 23:23:07,411 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 23:23:07,453 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:23:07,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:23:07,454 INFO L158 Benchmark]: Toolchain (without parser) took 36499.45ms. Allocated memory was 67.1MB in the beginning and 622.9MB in the end (delta: 555.7MB). Free memory was 37.6MB in the beginning and 459.7MB in the end (delta: -422.1MB). Peak memory consumption was 134.6MB. Max. memory is 16.1GB. [2023-08-30 23:23:07,454 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 67.1MB. Free memory is still 45.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:23:07,454 INFO L158 Benchmark]: CACSL2BoogieTranslator took 613.97ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 37.5MB in the beginning and 53.8MB in the end (delta: -16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 23:23:07,454 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.08ms. Allocated memory is still 90.2MB. Free memory was 53.8MB in the beginning and 50.6MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:23:07,455 INFO L158 Benchmark]: Boogie Preprocessor took 68.09ms. Allocated memory is still 90.2MB. Free memory was 50.6MB in the beginning and 48.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:23:07,455 INFO L158 Benchmark]: RCFGBuilder took 911.15ms. Allocated memory is still 90.2MB. Free memory was 48.1MB in the beginning and 44.8MB in the end (delta: 3.2MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2023-08-30 23:23:07,455 INFO L158 Benchmark]: TraceAbstraction took 34759.87ms. Allocated memory was 90.2MB in the beginning and 622.9MB in the end (delta: 532.7MB). Free memory was 44.3MB in the beginning and 462.8MB in the end (delta: -418.5MB). Peak memory consumption was 115.2MB. Max. memory is 16.1GB. [2023-08-30 23:23:07,457 INFO L158 Benchmark]: Witness Printer took 57.24ms. Allocated memory is still 622.9MB. Free memory was 462.8MB in the beginning and 459.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:23:07,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 67.1MB. Free memory is still 45.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 613.97ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 37.5MB in the beginning and 53.8MB in the end (delta: -16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.08ms. Allocated memory is still 90.2MB. Free memory was 53.8MB in the beginning and 50.6MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.09ms. Allocated memory is still 90.2MB. Free memory was 50.6MB in the beginning and 48.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 911.15ms. Allocated memory is still 90.2MB. Free memory was 48.1MB in the beginning and 44.8MB in the end (delta: 3.2MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * TraceAbstraction took 34759.87ms. Allocated memory was 90.2MB in the beginning and 622.9MB in the end (delta: 532.7MB). Free memory was 44.3MB in the beginning and 462.8MB in the end (delta: -418.5MB). Peak memory consumption was 115.2MB. Max. memory is 16.1GB. * Witness Printer took 57.24ms. Allocated memory is still 622.9MB. Free memory was 462.8MB in the beginning and 459.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 117 PlacesBefore, 36 PlacesAfterwards, 109 TransitionsBefore, 26 TransitionsAfterwards, 2202 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 94 TotalNumberOfCompositions, 6197 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2315, independent: 2124, independent conditional: 0, independent unconditional: 2124, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1176, independent: 1120, independent conditional: 0, independent unconditional: 1120, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2315, independent: 1004, independent conditional: 0, independent unconditional: 1004, dependent: 135, dependent conditional: 0, dependent unconditional: 135, unknown: 1176, unknown conditional: 0, unknown unconditional: 1176] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 142 locations, 6 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: 34.6s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1124 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 965 mSDsluCounter, 893 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 804 mSDsCounter, 583 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4061 IncrementalHoareTripleChecker+Invalid, 4644 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 583 mSolverCounterUnsat, 89 mSDtfsCounter, 4061 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=563occurred in iteration=9, InterpolantAutomatonStates: 118, 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, 1.1s SatisfiabilityAnalysisTime, 18.3s InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 334 ConstructedInterpolants, 0 QuantifiedInterpolants, 3438 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 23:23:07,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE