./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 BEFORE --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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:59:15,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:59:15,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:59:15,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:59:15,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:59:15,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:59:15,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:59:15,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:59:15,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:59:15,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:59:15,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:59:15,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:59:15,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:59:15,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:59:15,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:59:15,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:59:15,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:59:15,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:59:15,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:59:15,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:59:15,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:59:15,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:59:15,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:59:15,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:59:15,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:59:15,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:59:15,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:59:15,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:59:15,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:59:15,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:59:15,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:59:15,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:59:15,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:59:15,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:59:15,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:59:15,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:59:15,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:59:15,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:59:15,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:59:15,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:59:15,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:59:15,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:59:15,727 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:59:15,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:59:15,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:59:15,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:59:15,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:59:15,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:59:15,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:59:15,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:59:15,731 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:59:15,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:59:15,732 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:59:15,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:59:15,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:59:15,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:59:15,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:59:15,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:59:15,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:59:15,733 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:59:15,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:59:15,733 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:59:15,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:59:15,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:59:15,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:59:15,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:59:15,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:15,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:59:15,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:59:15,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:59:15,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:59:15,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:59:15,735 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:59:15,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:59:15,736 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:59:15,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:59:15,736 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:59:15,737 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:59:16,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:59:16,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:59:16,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:59:16,076 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:59:16,076 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:59:16,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-09-01 09:59:17,230 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:59:17,482 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:59:17,482 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-09-01 09:59:17,498 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/376ebbc28/7aa004199c8c4be4be82e759cc817a3c/FLAGf1de0f0d0 [2023-09-01 09:59:17,512 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/376ebbc28/7aa004199c8c4be4be82e759cc817a3c [2023-09-01 09:59:17,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:59:17,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:59:17,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:17,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:59:17,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:59:17,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:17" (1/1) ... [2023-09-01 09:59:17,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d4d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:17, skipping insertion in model container [2023-09-01 09:59:17,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:17" (1/1) ... [2023-09-01 09:59:17,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:59:17,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:59:17,708 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] [2023-09-01 09:59:17,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:59:17,887 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:59:17,897 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] [2023-09-01 09:59:17,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:59:18,019 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:59:18,020 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:59:18,026 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:59:18,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:18 WrapperNode [2023-09-01 09:59:18,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:18,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:59:18,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:59:18,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:59:18,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:18" (1/1) ... [2023-09-01 09:59:18,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:18" (1/1) ... [2023-09-01 09:59:18,127 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 173 [2023-09-01 09:59:18,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:59:18,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:59:18,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:59:18,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:59:18,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:18" (1/1) ... [2023-09-01 09:59:18,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:18" (1/1) ... [2023-09-01 09:59:18,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:18" (1/1) ... [2023-09-01 09:59:18,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:18" (1/1) ... [2023-09-01 09:59:18,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:18" (1/1) ... [2023-09-01 09:59:18,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:18" (1/1) ... [2023-09-01 09:59:18,175 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:18" (1/1) ... [2023-09-01 09:59:18,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:18" (1/1) ... [2023-09-01 09:59:18,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:59:18,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:59:18,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:59:18,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:59:18,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:18" (1/1) ... [2023-09-01 09:59:18,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:18,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:59:18,212 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) [2023-09-01 09:59:18,226 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 [2023-09-01 09:59:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:59:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:59:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:59:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:59:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:59:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:59:18,262 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:59:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:59:18,262 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:59:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-09-01 09:59:18,262 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-09-01 09:59:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:59:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:59:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:59:18,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:59:18,270 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:59:18,449 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:59:18,451 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:59:18,926 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:59:19,144 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:59:19,144 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:59:19,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:19 BoogieIcfgContainer [2023-09-01 09:59:19,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:59:19,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:59:19,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:59:19,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:59:19,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:59:17" (1/3) ... [2023-09-01 09:59:19,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a75b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:59:19, skipping insertion in model container [2023-09-01 09:59:19,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:18" (2/3) ... [2023-09-01 09:59:19,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a75b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:59:19, skipping insertion in model container [2023-09-01 09:59:19,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:19" (3/3) ... [2023-09-01 09:59:19,155 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-09-01 09:59:19,163 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:59:19,172 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:59:19,172 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 09:59:19,172 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:59:19,246 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:59:19,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 239 flow [2023-09-01 09:59:19,350 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2023-09-01 09:59:19,350 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:59:19,356 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. [2023-09-01 09:59:19,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 112 transitions, 239 flow [2023-09-01 09:59:19,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 109 transitions, 227 flow [2023-09-01 09:59:19,365 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:59:19,383 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 109 transitions, 227 flow [2023-09-01 09:59:19,386 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 109 transitions, 227 flow [2023-09-01 09:59:19,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 109 transitions, 227 flow [2023-09-01 09:59:19,440 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2023-09-01 09:59:19,440 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:59:19,441 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. [2023-09-01 09:59:19,444 INFO L119 LiptonReduction]: Number of co-enabled transitions 2202 [2023-09-01 09:59:23,929 INFO L134 LiptonReduction]: Checked pairs total: 6197 [2023-09-01 09:59:23,929 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-09-01 09:59:23,943 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:59:23,949 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;@29e3ef08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:59:23,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-09-01 09:59:23,954 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-09-01 09:59:23,955 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:59:23,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:23,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:23,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 09:59:23,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:23,961 INFO L85 PathProgramCache]: Analyzing trace with hash 243412563, now seen corresponding path program 1 times [2023-09-01 09:59:23,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:23,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678212609] [2023-09-01 09:59:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:23,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:24,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:24,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678212609] [2023-09-01 09:59:24,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678212609] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:24,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:24,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:59:24,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971793026] [2023-09-01 09:59:24,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:24,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:59:24,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:24,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:59:24,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:59:24,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-09-01 09:59:24,454 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) [2023-09-01 09:59:24,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:24,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-09-01 09:59:24,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:25,237 INFO L130 PetriNetUnfolder]: 2147/3120 cut-off events. [2023-09-01 09:59:25,238 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-09-01 09:59:25,246 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. [2023-09-01 09:59:25,260 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 33 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-09-01 09:59:25,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 159 flow [2023-09-01 09:59:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:59:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:59:25,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-09-01 09:59:25,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5129449838187702 [2023-09-01 09:59:25,281 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-09-01 09:59:25,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-09-01 09:59:25,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:25,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-09-01 09:59:25,293 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) [2023-09-01 09:59:25,298 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) [2023-09-01 09:59:25,299 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) [2023-09-01 09:59:25,300 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 61 flow. Second operand 3 states and 317 transitions. [2023-09-01 09:59:25,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 159 flow [2023-09-01 09:59:25,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 09:59:25,307 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 58 flow [2023-09-01 09:59:25,309 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} [2023-09-01 09:59:25,313 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-09-01 09:59:25,314 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 58 flow [2023-09-01 09:59:25,314 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) [2023-09-01 09:59:25,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:25,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:25,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:59:25,319 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)] === [2023-09-01 09:59:25,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:25,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1991260440, now seen corresponding path program 1 times [2023-09-01 09:59:25,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:25,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801701873] [2023-09-01 09:59:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:25,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:26,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:26,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801701873] [2023-09-01 09:59:26,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801701873] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:26,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:26,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:59:26,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331190378] [2023-09-01 09:59:26,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:26,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:59:26,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:59:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:59:26,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-09-01 09:59:26,011 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) [2023-09-01 09:59:26,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:26,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-09-01 09:59:26,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:26,465 INFO L130 PetriNetUnfolder]: 1686/2503 cut-off events. [2023-09-01 09:59:26,466 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 09:59:26,468 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. [2023-09-01 09:59:26,479 INFO L137 encePairwiseOnDemand]: 202/206 looper letters, 33 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-09-01 09:59:26,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 162 flow [2023-09-01 09:59:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:59:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:59:26,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2023-09-01 09:59:26,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064724919093851 [2023-09-01 09:59:26,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2023-09-01 09:59:26,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2023-09-01 09:59:26,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:26,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2023-09-01 09:59:26,484 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) [2023-09-01 09:59:26,486 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) [2023-09-01 09:59:26,487 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) [2023-09-01 09:59:26,487 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 58 flow. Second operand 3 states and 313 transitions. [2023-09-01 09:59:26,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 162 flow [2023-09-01 09:59:26,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:59:26,489 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 73 flow [2023-09-01 09:59:26,490 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} [2023-09-01 09:59:26,491 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-09-01 09:59:26,491 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 73 flow [2023-09-01 09:59:26,491 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) [2023-09-01 09:59:26,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:26,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:26,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:59:26,492 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)] === [2023-09-01 09:59:26,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:26,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1599530495, now seen corresponding path program 1 times [2023-09-01 09:59:26,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:26,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930893790] [2023-09-01 09:59:26,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:26,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:26,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:26,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930893790] [2023-09-01 09:59:26,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930893790] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:26,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:26,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:59:26,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784081118] [2023-09-01 09:59:26,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:26,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:59:26,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:26,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:59:26,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:59:26,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-09-01 09:59:26,815 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) [2023-09-01 09:59:26,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:26,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-09-01 09:59:26,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:27,172 INFO L130 PetriNetUnfolder]: 1466/2169 cut-off events. [2023-09-01 09:59:27,172 INFO L131 PetriNetUnfolder]: For 318/318 co-relation queries the response was YES. [2023-09-01 09:59:27,175 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. [2023-09-01 09:59:27,184 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 34 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-09-01 09:59:27,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 169 flow [2023-09-01 09:59:27,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:59:27,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:59:27,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-09-01 09:59:27,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080906148867314 [2023-09-01 09:59:27,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-09-01 09:59:27,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-09-01 09:59:27,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:27,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-09-01 09:59:27,187 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) [2023-09-01 09:59:27,189 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) [2023-09-01 09:59:27,189 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) [2023-09-01 09:59:27,189 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 73 flow. Second operand 3 states and 314 transitions. [2023-09-01 09:59:27,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 169 flow [2023-09-01 09:59:27,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:59:27,191 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 78 flow [2023-09-01 09:59:27,191 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} [2023-09-01 09:59:27,191 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-09-01 09:59:27,192 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 78 flow [2023-09-01 09:59:27,192 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) [2023-09-01 09:59:27,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:27,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:27,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:59:27,193 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)] === [2023-09-01 09:59:27,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:27,193 INFO L85 PathProgramCache]: Analyzing trace with hash -576501497, now seen corresponding path program 1 times [2023-09-01 09:59:27,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:27,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066957908] [2023-09-01 09:59:27,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:27,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:28,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:28,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066957908] [2023-09-01 09:59:28,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066957908] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:28,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:28,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:59:28,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861861997] [2023-09-01 09:59:28,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:28,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 09:59:28,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:28,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 09:59:28,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 09:59:28,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-09-01 09:59:28,094 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) [2023-09-01 09:59:28,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:28,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-09-01 09:59:28,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:28,695 INFO L130 PetriNetUnfolder]: 2017/2976 cut-off events. [2023-09-01 09:59:28,696 INFO L131 PetriNetUnfolder]: For 498/498 co-relation queries the response was YES. [2023-09-01 09:59:28,700 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. [2023-09-01 09:59:28,712 INFO L137 encePairwiseOnDemand]: 194/206 looper letters, 40 selfloop transitions, 21 changer transitions 0/62 dead transitions. [2023-09-01 09:59:28,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 281 flow [2023-09-01 09:59:28,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:59:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:59:28,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 576 transitions. [2023-09-01 09:59:28,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46601941747572817 [2023-09-01 09:59:28,722 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 576 transitions. [2023-09-01 09:59:28,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 576 transitions. [2023-09-01 09:59:28,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:28,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 576 transitions. [2023-09-01 09:59:28,724 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) [2023-09-01 09:59:28,726 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) [2023-09-01 09:59:28,727 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) [2023-09-01 09:59:28,727 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 78 flow. Second operand 6 states and 576 transitions. [2023-09-01 09:59:28,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 281 flow [2023-09-01 09:59:28,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 62 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:59:28,734 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 201 flow [2023-09-01 09:59:28,734 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} [2023-09-01 09:59:28,735 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-09-01 09:59:28,735 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 201 flow [2023-09-01 09:59:28,735 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) [2023-09-01 09:59:28,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:28,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:28,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:59:28,736 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)] === [2023-09-01 09:59:28,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:28,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2100453712, now seen corresponding path program 1 times [2023-09-01 09:59:28,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:28,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442695847] [2023-09-01 09:59:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:28,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:29,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:29,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442695847] [2023-09-01 09:59:29,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442695847] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:29,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:29,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:59:29,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984457530] [2023-09-01 09:59:29,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:29,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:59:29,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:29,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:59:29,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:59:29,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-09-01 09:59:29,746 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) [2023-09-01 09:59:29,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:29,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-09-01 09:59:29,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:30,688 INFO L130 PetriNetUnfolder]: 3104/4623 cut-off events. [2023-09-01 09:59:30,689 INFO L131 PetriNetUnfolder]: For 2825/2825 co-relation queries the response was YES. [2023-09-01 09:59:30,698 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. [2023-09-01 09:59:30,724 INFO L137 encePairwiseOnDemand]: 194/206 looper letters, 65 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2023-09-01 09:59:30,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 89 transitions, 537 flow [2023-09-01 09:59:30,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:59:30,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:59:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 684 transitions. [2023-09-01 09:59:30,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47434119278779474 [2023-09-01 09:59:30,727 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 684 transitions. [2023-09-01 09:59:30,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 684 transitions. [2023-09-01 09:59:30,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:30,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 684 transitions. [2023-09-01 09:59:30,729 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) [2023-09-01 09:59:30,732 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) [2023-09-01 09:59:30,734 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) [2023-09-01 09:59:30,734 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 201 flow. Second operand 7 states and 684 transitions. [2023-09-01 09:59:30,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 89 transitions, 537 flow [2023-09-01 09:59:30,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 89 transitions, 532 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 09:59:30,752 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 354 flow [2023-09-01 09:59:30,753 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} [2023-09-01 09:59:30,754 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-09-01 09:59:30,755 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 354 flow [2023-09-01 09:59:30,755 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) [2023-09-01 09:59:30,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:30,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:30,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:59:30,756 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)] === [2023-09-01 09:59:30,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:30,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1048871140, now seen corresponding path program 2 times [2023-09-01 09:59:30,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:30,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748014622] [2023-09-01 09:59:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:30,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:31,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:31,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:31,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748014622] [2023-09-01 09:59:31,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748014622] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:31,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:31,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:59:31,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102277180] [2023-09-01 09:59:31,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:31,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:59:31,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:31,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:59:31,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:59:31,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-09-01 09:59:31,099 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) [2023-09-01 09:59:31,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:31,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-09-01 09:59:31,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:31,727 INFO L130 PetriNetUnfolder]: 2310/3672 cut-off events. [2023-09-01 09:59:31,728 INFO L131 PetriNetUnfolder]: For 8086/8086 co-relation queries the response was YES. [2023-09-01 09:59:31,736 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. [2023-09-01 09:59:31,756 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 138 selfloop transitions, 5 changer transitions 1/145 dead transitions. [2023-09-01 09:59:31,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 145 transitions, 1208 flow [2023-09-01 09:59:31,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:59:31,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:59:31,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 410 transitions. [2023-09-01 09:59:31,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975728155339806 [2023-09-01 09:59:31,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 410 transitions. [2023-09-01 09:59:31,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 410 transitions. [2023-09-01 09:59:31,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:31,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 410 transitions. [2023-09-01 09:59:31,761 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) [2023-09-01 09:59:31,762 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) [2023-09-01 09:59:31,762 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) [2023-09-01 09:59:31,763 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 354 flow. Second operand 4 states and 410 transitions. [2023-09-01 09:59:31,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 145 transitions, 1208 flow [2023-09-01 09:59:31,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 145 transitions, 1117 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-09-01 09:59:31,777 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 351 flow [2023-09-01 09:59:31,777 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} [2023-09-01 09:59:31,779 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-09-01 09:59:31,780 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 351 flow [2023-09-01 09:59:31,780 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) [2023-09-01 09:59:31,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:31,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:31,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:59:31,781 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)] === [2023-09-01 09:59:31,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:31,781 INFO L85 PathProgramCache]: Analyzing trace with hash -393579275, now seen corresponding path program 1 times [2023-09-01 09:59:31,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:31,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113661758] [2023-09-01 09:59:31,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:31,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:32,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:32,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113661758] [2023-09-01 09:59:32,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113661758] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:32,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:32,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:59:32,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672976013] [2023-09-01 09:59:32,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:32,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:59:32,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:32,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:59:32,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:59:32,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-09-01 09:59:32,171 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) [2023-09-01 09:59:32,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:32,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-09-01 09:59:32,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:32,575 INFO L130 PetriNetUnfolder]: 1049/1792 cut-off events. [2023-09-01 09:59:32,575 INFO L131 PetriNetUnfolder]: For 3886/3886 co-relation queries the response was YES. [2023-09-01 09:59:32,581 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. [2023-09-01 09:59:32,588 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 136 selfloop transitions, 8 changer transitions 1/146 dead transitions. [2023-09-01 09:59:32,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 146 transitions, 1167 flow [2023-09-01 09:59:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:59:32,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:59:32,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 514 transitions. [2023-09-01 09:59:32,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49902912621359224 [2023-09-01 09:59:32,591 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 514 transitions. [2023-09-01 09:59:32,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 514 transitions. [2023-09-01 09:59:32,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:32,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 514 transitions. [2023-09-01 09:59:32,593 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) [2023-09-01 09:59:32,594 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) [2023-09-01 09:59:32,595 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) [2023-09-01 09:59:32,595 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 351 flow. Second operand 5 states and 514 transitions. [2023-09-01 09:59:32,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 146 transitions, 1167 flow [2023-09-01 09:59:32,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 146 transitions, 1157 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 09:59:32,606 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 391 flow [2023-09-01 09:59:32,606 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} [2023-09-01 09:59:32,606 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-09-01 09:59:32,607 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 391 flow [2023-09-01 09:59:32,607 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) [2023-09-01 09:59:32,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:32,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:32,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 09:59:32,608 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)] === [2023-09-01 09:59:32,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash 720337333, now seen corresponding path program 1 times [2023-09-01 09:59:32,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:32,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054565595] [2023-09-01 09:59:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:32,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:33,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:33,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054565595] [2023-09-01 09:59:33,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054565595] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:33,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:33,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 09:59:33,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996871678] [2023-09-01 09:59:33,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:33,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 09:59:33,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:33,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 09:59:33,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 09:59:33,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 206 [2023-09-01 09:59:33,936 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) [2023-09-01 09:59:33,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:33,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 206 [2023-09-01 09:59:33,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:34,529 INFO L130 PetriNetUnfolder]: 978/1747 cut-off events. [2023-09-01 09:59:34,529 INFO L131 PetriNetUnfolder]: For 4227/4227 co-relation queries the response was YES. [2023-09-01 09:59:34,535 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. [2023-09-01 09:59:34,542 INFO L137 encePairwiseOnDemand]: 194/206 looper letters, 81 selfloop transitions, 21 changer transitions 30/133 dead transitions. [2023-09-01 09:59:34,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 133 transitions, 1117 flow [2023-09-01 09:59:34,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 09:59:34,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 09:59:34,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 896 transitions. [2023-09-01 09:59:34,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48327939590075514 [2023-09-01 09:59:34,546 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 896 transitions. [2023-09-01 09:59:34,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 896 transitions. [2023-09-01 09:59:34,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:34,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 896 transitions. [2023-09-01 09:59:34,549 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) [2023-09-01 09:59:34,552 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) [2023-09-01 09:59:34,552 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) [2023-09-01 09:59:34,552 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 391 flow. Second operand 9 states and 896 transitions. [2023-09-01 09:59:34,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 133 transitions, 1117 flow [2023-09-01 09:59:34,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 133 transitions, 1011 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-09-01 09:59:34,564 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 440 flow [2023-09-01 09:59:34,564 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} [2023-09-01 09:59:34,566 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2023-09-01 09:59:34,566 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 440 flow [2023-09-01 09:59:34,566 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) [2023-09-01 09:59:34,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:34,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:34,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 09:59:34,567 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)] === [2023-09-01 09:59:34,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:34,568 INFO L85 PathProgramCache]: Analyzing trace with hash -69634631, now seen corresponding path program 2 times [2023-09-01 09:59:34,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:34,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488659828] [2023-09-01 09:59:34,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:34,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:36,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:36,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:36,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488659828] [2023-09-01 09:59:36,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488659828] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:36,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:36,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 09:59:36,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649791693] [2023-09-01 09:59:36,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:36,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 09:59:36,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:36,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 09:59:36,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-09-01 09:59:36,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-09-01 09:59:36,246 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) [2023-09-01 09:59:36,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:36,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-09-01 09:59:36,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:36,895 INFO L130 PetriNetUnfolder]: 1099/1981 cut-off events. [2023-09-01 09:59:36,895 INFO L131 PetriNetUnfolder]: For 5091/5091 co-relation queries the response was YES. [2023-09-01 09:59:36,903 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. [2023-09-01 09:59:36,911 INFO L137 encePairwiseOnDemand]: 195/206 looper letters, 92 selfloop transitions, 23 changer transitions 23/139 dead transitions. [2023-09-01 09:59:36,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 139 transitions, 1184 flow [2023-09-01 09:59:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 09:59:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 09:59:36,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 788 transitions. [2023-09-01 09:59:36,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47815533980582525 [2023-09-01 09:59:36,915 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 788 transitions. [2023-09-01 09:59:36,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 788 transitions. [2023-09-01 09:59:36,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:36,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 788 transitions. [2023-09-01 09:59:36,918 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) [2023-09-01 09:59:36,921 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) [2023-09-01 09:59:36,922 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) [2023-09-01 09:59:36,922 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 440 flow. Second operand 8 states and 788 transitions. [2023-09-01 09:59:36,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 139 transitions, 1184 flow [2023-09-01 09:59:36,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 139 transitions, 1149 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-09-01 09:59:36,937 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 563 flow [2023-09-01 09:59:36,937 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} [2023-09-01 09:59:36,938 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-09-01 09:59:36,938 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 563 flow [2023-09-01 09:59:36,939 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) [2023-09-01 09:59:36,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:36,939 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] [2023-09-01 09:59:36,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 09:59:36,940 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)] === [2023-09-01 09:59:36,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:36,940 INFO L85 PathProgramCache]: Analyzing trace with hash 653242567, now seen corresponding path program 1 times [2023-09-01 09:59:36,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:36,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379637008] [2023-09-01 09:59:36,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:36,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:37,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:37,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379637008] [2023-09-01 09:59:37,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379637008] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:37,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:37,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:59:37,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392380183] [2023-09-01 09:59:37,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:37,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:59:37,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:37,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:59:37,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:59:37,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-09-01 09:59:37,436 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) [2023-09-01 09:59:37,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:37,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-09-01 09:59:37,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:37,830 INFO L130 PetriNetUnfolder]: 865/1564 cut-off events. [2023-09-01 09:59:37,831 INFO L131 PetriNetUnfolder]: For 6038/6038 co-relation queries the response was YES. [2023-09-01 09:59:37,837 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. [2023-09-01 09:59:37,844 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 109 selfloop transitions, 11 changer transitions 14/135 dead transitions. [2023-09-01 09:59:37,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 135 transitions, 1364 flow [2023-09-01 09:59:37,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:59:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:59:37,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 588 transitions. [2023-09-01 09:59:37,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47572815533980584 [2023-09-01 09:59:37,848 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 588 transitions. [2023-09-01 09:59:37,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 588 transitions. [2023-09-01 09:59:37,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:37,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 588 transitions. [2023-09-01 09:59:37,850 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) [2023-09-01 09:59:37,851 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) [2023-09-01 09:59:37,852 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) [2023-09-01 09:59:37,852 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 563 flow. Second operand 6 states and 588 transitions. [2023-09-01 09:59:37,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 135 transitions, 1364 flow [2023-09-01 09:59:37,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 135 transitions, 1251 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-09-01 09:59:37,865 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 519 flow [2023-09-01 09:59:37,866 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} [2023-09-01 09:59:37,866 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-09-01 09:59:37,867 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 519 flow [2023-09-01 09:59:37,867 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) [2023-09-01 09:59:37,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:37,867 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] [2023-09-01 09:59:37,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 09:59:37,868 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)] === [2023-09-01 09:59:37,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:37,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1161937857, now seen corresponding path program 1 times [2023-09-01 09:59:37,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:37,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837737032] [2023-09-01 09:59:37,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:37,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:38,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:38,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837737032] [2023-09-01 09:59:38,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837737032] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:38,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:38,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:59:38,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142647768] [2023-09-01 09:59:38,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:38,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:59:38,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:38,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:59:38,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:59:38,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 206 [2023-09-01 09:59:38,291 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) [2023-09-01 09:59:38,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:38,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 206 [2023-09-01 09:59:38,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:38,753 INFO L130 PetriNetUnfolder]: 1354/2377 cut-off events. [2023-09-01 09:59:38,754 INFO L131 PetriNetUnfolder]: For 8238/8238 co-relation queries the response was YES. [2023-09-01 09:59:38,760 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. [2023-09-01 09:59:38,765 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 65 selfloop transitions, 1 changer transitions 71/137 dead transitions. [2023-09-01 09:59:38,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 137 transitions, 1337 flow [2023-09-01 09:59:38,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:59:38,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:59:38,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 412 transitions. [2023-09-01 09:59:38,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-09-01 09:59:38,768 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 412 transitions. [2023-09-01 09:59:38,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 412 transitions. [2023-09-01 09:59:38,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:38,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 412 transitions. [2023-09-01 09:59:38,769 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) [2023-09-01 09:59:38,770 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) [2023-09-01 09:59:38,771 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) [2023-09-01 09:59:38,771 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 519 flow. Second operand 4 states and 412 transitions. [2023-09-01 09:59:38,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 137 transitions, 1337 flow [2023-09-01 09:59:38,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 137 transitions, 1175 flow, removed 28 selfloop flow, removed 10 redundant places. [2023-09-01 09:59:38,790 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 353 flow [2023-09-01 09:59:38,790 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} [2023-09-01 09:59:38,791 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2023-09-01 09:59:38,791 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 353 flow [2023-09-01 09:59:38,791 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) [2023-09-01 09:59:38,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:38,792 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] [2023-09-01 09:59:38,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 09:59:38,792 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)] === [2023-09-01 09:59:38,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:38,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1198941303, now seen corresponding path program 2 times [2023-09-01 09:59:38,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:38,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948592078] [2023-09-01 09:59:38,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:38,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:40,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:40,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948592078] [2023-09-01 09:59:40,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948592078] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:40,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:40,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:59:40,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571815847] [2023-09-01 09:59:40,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:40,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:59:40,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:40,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:59:40,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:59:40,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 206 [2023-09-01 09:59:40,583 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) [2023-09-01 09:59:40,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:40,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 206 [2023-09-01 09:59:40,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:41,060 INFO L130 PetriNetUnfolder]: 843/1616 cut-off events. [2023-09-01 09:59:41,060 INFO L131 PetriNetUnfolder]: For 4138/4138 co-relation queries the response was YES. [2023-09-01 09:59:41,067 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. [2023-09-01 09:59:41,071 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 53 selfloop transitions, 10 changer transitions 58/122 dead transitions. [2023-09-01 09:59:41,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 122 transitions, 996 flow [2023-09-01 09:59:41,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 09:59:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 09:59:41,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 803 transitions. [2023-09-01 09:59:41,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48725728155339804 [2023-09-01 09:59:41,075 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 803 transitions. [2023-09-01 09:59:41,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 803 transitions. [2023-09-01 09:59:41,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:41,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 803 transitions. [2023-09-01 09:59:41,077 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) [2023-09-01 09:59:41,080 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) [2023-09-01 09:59:41,080 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) [2023-09-01 09:59:41,080 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 353 flow. Second operand 8 states and 803 transitions. [2023-09-01 09:59:41,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 122 transitions, 996 flow [2023-09-01 09:59:41,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 122 transitions, 984 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-09-01 09:59:41,091 INFO L231 Difference]: Finished difference. Result has 72 places, 54 transitions, 396 flow [2023-09-01 09:59:41,092 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} [2023-09-01 09:59:41,092 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-09-01 09:59:41,093 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 54 transitions, 396 flow [2023-09-01 09:59:41,093 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) [2023-09-01 09:59:41,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:41,093 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] [2023-09-01 09:59:41,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 09:59:41,094 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)] === [2023-09-01 09:59:41,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:41,094 INFO L85 PathProgramCache]: Analyzing trace with hash 309582873, now seen corresponding path program 3 times [2023-09-01 09:59:41,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:41,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416993018] [2023-09-01 09:59:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:41,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:41,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:41,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416993018] [2023-09-01 09:59:41,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416993018] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:41,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:41,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:59:41,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449831411] [2023-09-01 09:59:41,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:41,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:59:41,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:41,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:59:41,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:59:41,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-09-01 09:59:41,899 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) [2023-09-01 09:59:41,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:41,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-09-01 09:59:41,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:42,332 INFO L130 PetriNetUnfolder]: 665/1303 cut-off events. [2023-09-01 09:59:42,332 INFO L131 PetriNetUnfolder]: For 5338/5339 co-relation queries the response was YES. [2023-09-01 09:59:42,338 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. [2023-09-01 09:59:42,341 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 43 selfloop transitions, 16 changer transitions 37/97 dead transitions. [2023-09-01 09:59:42,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 97 transitions, 870 flow [2023-09-01 09:59:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:59:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:59:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 668 transitions. [2023-09-01 09:59:42,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463245492371706 [2023-09-01 09:59:42,344 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 668 transitions. [2023-09-01 09:59:42,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 668 transitions. [2023-09-01 09:59:42,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:42,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 668 transitions. [2023-09-01 09:59:42,347 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) [2023-09-01 09:59:42,349 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) [2023-09-01 09:59:42,350 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) [2023-09-01 09:59:42,350 INFO L175 Difference]: Start difference. First operand has 72 places, 54 transitions, 396 flow. Second operand 7 states and 668 transitions. [2023-09-01 09:59:42,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 97 transitions, 870 flow [2023-09-01 09:59:42,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 97 transitions, 831 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-09-01 09:59:42,359 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 442 flow [2023-09-01 09:59:42,359 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} [2023-09-01 09:59:42,360 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-09-01 09:59:42,360 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 442 flow [2023-09-01 09:59:42,360 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) [2023-09-01 09:59:42,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:42,361 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] [2023-09-01 09:59:42,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 09:59:42,361 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)] === [2023-09-01 09:59:42,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:42,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1196264807, now seen corresponding path program 4 times [2023-09-01 09:59:42,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:42,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502989833] [2023-09-01 09:59:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:42,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:44,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:44,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502989833] [2023-09-01 09:59:44,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502989833] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:44,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:44,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 09:59:44,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879951460] [2023-09-01 09:59:44,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:44,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 09:59:44,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:44,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 09:59:44,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-09-01 09:59:44,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-09-01 09:59:44,992 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) [2023-09-01 09:59:44,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:44,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-09-01 09:59:44,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:45,621 INFO L130 PetriNetUnfolder]: 677/1382 cut-off events. [2023-09-01 09:59:45,621 INFO L131 PetriNetUnfolder]: For 6604/6604 co-relation queries the response was YES. [2023-09-01 09:59:45,626 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. [2023-09-01 09:59:45,629 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 37 selfloop transitions, 11 changer transitions 81/130 dead transitions. [2023-09-01 09:59:45,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 130 transitions, 1183 flow [2023-09-01 09:59:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 09:59:45,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 09:59:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 871 transitions. [2023-09-01 09:59:45,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697950377562028 [2023-09-01 09:59:45,633 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 871 transitions. [2023-09-01 09:59:45,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 871 transitions. [2023-09-01 09:59:45,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:45,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 871 transitions. [2023-09-01 09:59:45,635 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) [2023-09-01 09:59:45,638 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) [2023-09-01 09:59:45,639 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) [2023-09-01 09:59:45,639 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 442 flow. Second operand 9 states and 871 transitions. [2023-09-01 09:59:45,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 130 transitions, 1183 flow [2023-09-01 09:59:45,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 130 transitions, 1094 flow, removed 23 selfloop flow, removed 7 redundant places. [2023-09-01 09:59:45,650 INFO L231 Difference]: Finished difference. Result has 76 places, 41 transitions, 316 flow [2023-09-01 09:59:45,651 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} [2023-09-01 09:59:45,652 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2023-09-01 09:59:45,652 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 41 transitions, 316 flow [2023-09-01 09:59:45,652 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) [2023-09-01 09:59:45,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:45,653 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] [2023-09-01 09:59:45,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 09:59:45,653 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)] === [2023-09-01 09:59:45,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:45,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1417680957, now seen corresponding path program 5 times [2023-09-01 09:59:45,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:45,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349103591] [2023-09-01 09:59:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:45,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:47,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:47,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349103591] [2023-09-01 09:59:47,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349103591] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:47,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:47,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:59:47,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004255267] [2023-09-01 09:59:47,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:47,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:59:47,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:47,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:59:47,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:59:47,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-09-01 09:59:47,106 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) [2023-09-01 09:59:47,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:47,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-09-01 09:59:47,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:47,590 INFO L130 PetriNetUnfolder]: 311/625 cut-off events. [2023-09-01 09:59:47,591 INFO L131 PetriNetUnfolder]: For 3100/3100 co-relation queries the response was YES. [2023-09-01 09:59:47,593 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. [2023-09-01 09:59:47,595 INFO L137 encePairwiseOnDemand]: 197/206 looper letters, 63 selfloop transitions, 15 changer transitions 31/110 dead transitions. [2023-09-01 09:59:47,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 110 transitions, 964 flow [2023-09-01 09:59:47,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 09:59:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 09:59:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 858 transitions. [2023-09-01 09:59:47,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627831715210356 [2023-09-01 09:59:47,598 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 858 transitions. [2023-09-01 09:59:47,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 858 transitions. [2023-09-01 09:59:47,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:47,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 858 transitions. [2023-09-01 09:59:47,600 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) [2023-09-01 09:59:47,603 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) [2023-09-01 09:59:47,604 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) [2023-09-01 09:59:47,604 INFO L175 Difference]: Start difference. First operand has 76 places, 41 transitions, 316 flow. Second operand 9 states and 858 transitions. [2023-09-01 09:59:47,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 110 transitions, 964 flow [2023-09-01 09:59:47,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 110 transitions, 862 flow, removed 40 selfloop flow, removed 11 redundant places. [2023-09-01 09:59:47,611 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 353 flow [2023-09-01 09:59:47,611 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} [2023-09-01 09:59:47,612 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-09-01 09:59:47,612 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 353 flow [2023-09-01 09:59:47,612 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) [2023-09-01 09:59:47,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:47,613 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] [2023-09-01 09:59:47,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 09:59:47,613 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)] === [2023-09-01 09:59:47,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:47,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1521466457, now seen corresponding path program 6 times [2023-09-01 09:59:47,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:47,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216451889] [2023-09-01 09:59:47,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:47,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:49,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:49,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216451889] [2023-09-01 09:59:49,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216451889] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:49,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:49,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 09:59:49,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112964080] [2023-09-01 09:59:49,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:49,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 09:59:49,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:49,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 09:59:49,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-09-01 09:59:49,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-09-01 09:59:49,682 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) [2023-09-01 09:59:49,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:49,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-09-01 09:59:49,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:49,994 INFO L130 PetriNetUnfolder]: 310/638 cut-off events. [2023-09-01 09:59:49,994 INFO L131 PetriNetUnfolder]: For 2302/2302 co-relation queries the response was YES. [2023-09-01 09:59:49,997 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. [2023-09-01 09:59:49,999 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 60 selfloop transitions, 11 changer transitions 9/81 dead transitions. [2023-09-01 09:59:49,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 81 transitions, 725 flow [2023-09-01 09:59:50,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:59:50,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:59:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2023-09-01 09:59:50,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603559870550162 [2023-09-01 09:59:50,002 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2023-09-01 09:59:50,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2023-09-01 09:59:50,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:50,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2023-09-01 09:59:50,004 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) [2023-09-01 09:59:50,006 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) [2023-09-01 09:59:50,006 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) [2023-09-01 09:59:50,007 INFO L175 Difference]: Start difference. First operand has 69 places, 46 transitions, 353 flow. Second operand 6 states and 569 transitions. [2023-09-01 09:59:50,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 81 transitions, 725 flow [2023-09-01 09:59:50,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 681 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-09-01 09:59:50,012 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 402 flow [2023-09-01 09:59:50,013 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} [2023-09-01 09:59:50,014 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2023-09-01 09:59:50,014 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 402 flow [2023-09-01 09:59:50,015 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) [2023-09-01 09:59:50,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:50,015 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] [2023-09-01 09:59:50,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 09:59:50,015 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)] === [2023-09-01 09:59:50,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:50,016 INFO L85 PathProgramCache]: Analyzing trace with hash -345399677, now seen corresponding path program 7 times [2023-09-01 09:59:50,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:50,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823114263] [2023-09-01 09:59:50,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:50,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:51,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:51,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823114263] [2023-09-01 09:59:51,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823114263] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:51,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:51,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 09:59:51,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786203131] [2023-09-01 09:59:51,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:51,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 09:59:51,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:51,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 09:59:51,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-09-01 09:59:51,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-09-01 09:59:51,183 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) [2023-09-01 09:59:51,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:51,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-09-01 09:59:51,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:51,511 INFO L130 PetriNetUnfolder]: 431/892 cut-off events. [2023-09-01 09:59:51,511 INFO L131 PetriNetUnfolder]: For 3518/3518 co-relation queries the response was YES. [2023-09-01 09:59:51,514 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. [2023-09-01 09:59:51,517 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 52 selfloop transitions, 7 changer transitions 31/91 dead transitions. [2023-09-01 09:59:51,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 91 transitions, 870 flow [2023-09-01 09:59:51,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:59:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:59:51,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 671 transitions. [2023-09-01 09:59:51,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653259361997226 [2023-09-01 09:59:51,520 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 671 transitions. [2023-09-01 09:59:51,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 671 transitions. [2023-09-01 09:59:51,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:51,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 671 transitions. [2023-09-01 09:59:51,522 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) [2023-09-01 09:59:51,524 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) [2023-09-01 09:59:51,524 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) [2023-09-01 09:59:51,524 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 402 flow. Second operand 7 states and 671 transitions. [2023-09-01 09:59:51,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 91 transitions, 870 flow [2023-09-01 09:59:51,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 91 transitions, 829 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-09-01 09:59:51,531 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 430 flow [2023-09-01 09:59:51,531 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} [2023-09-01 09:59:51,531 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-09-01 09:59:51,531 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 430 flow [2023-09-01 09:59:51,532 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) [2023-09-01 09:59:51,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:51,532 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] [2023-09-01 09:59:51,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 09:59:51,532 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)] === [2023-09-01 09:59:51,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:51,533 INFO L85 PathProgramCache]: Analyzing trace with hash -342773901, now seen corresponding path program 8 times [2023-09-01 09:59:51,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:51,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954037878] [2023-09-01 09:59:51,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:51,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:52,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:52,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:52,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954037878] [2023-09-01 09:59:52,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954037878] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:52,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:52,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 09:59:52,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538841546] [2023-09-01 09:59:52,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:52,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 09:59:52,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:52,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 09:59:52,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-09-01 09:59:52,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 206 [2023-09-01 09:59:52,781 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) [2023-09-01 09:59:52,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:52,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 206 [2023-09-01 09:59:52,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:53,110 INFO L130 PetriNetUnfolder]: 368/759 cut-off events. [2023-09-01 09:59:53,111 INFO L131 PetriNetUnfolder]: For 3198/3198 co-relation queries the response was YES. [2023-09-01 09:59:53,113 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. [2023-09-01 09:59:53,115 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 35 selfloop transitions, 2 changer transitions 52/90 dead transitions. [2023-09-01 09:59:53,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 845 flow [2023-09-01 09:59:53,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:59:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:59:53,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2023-09-01 09:59:53,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749190938511327 [2023-09-01 09:59:53,118 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2023-09-01 09:59:53,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2023-09-01 09:59:53,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:53,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2023-09-01 09:59:53,120 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) [2023-09-01 09:59:53,122 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) [2023-09-01 09:59:53,122 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) [2023-09-01 09:59:53,123 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 430 flow. Second operand 6 states and 587 transitions. [2023-09-01 09:59:53,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 845 flow [2023-09-01 09:59:53,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 90 transitions, 829 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-09-01 09:59:53,128 INFO L231 Difference]: Finished difference. Result has 72 places, 38 transitions, 276 flow [2023-09-01 09:59:53,128 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} [2023-09-01 09:59:53,129 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-09-01 09:59:53,129 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 38 transitions, 276 flow [2023-09-01 09:59:53,130 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) [2023-09-01 09:59:53,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:53,130 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] [2023-09-01 09:59:53,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 09:59:53,130 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)] === [2023-09-01 09:59:53,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:53,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1741772747, now seen corresponding path program 9 times [2023-09-01 09:59:53,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:53,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670877540] [2023-09-01 09:59:53,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:53,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:55,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:55,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670877540] [2023-09-01 09:59:55,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670877540] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:55,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:55,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 09:59:55,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49291271] [2023-09-01 09:59:55,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:55,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 09:59:55,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:55,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 09:59:55,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 09:59:55,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 206 [2023-09-01 09:59:55,170 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) [2023-09-01 09:59:55,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:55,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 206 [2023-09-01 09:59:55,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:55,405 INFO L130 PetriNetUnfolder]: 215/428 cut-off events. [2023-09-01 09:59:55,405 INFO L131 PetriNetUnfolder]: For 1959/1966 co-relation queries the response was YES. [2023-09-01 09:59:55,406 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. [2023-09-01 09:59:55,407 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2023-09-01 09:59:55,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 62 transitions, 592 flow [2023-09-01 09:59:55,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 09:59:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 09:59:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 744 transitions. [2023-09-01 09:59:55,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45145631067961167 [2023-09-01 09:59:55,410 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 744 transitions. [2023-09-01 09:59:55,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 744 transitions. [2023-09-01 09:59:55,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:55,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 744 transitions. [2023-09-01 09:59:55,412 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) [2023-09-01 09:59:55,414 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) [2023-09-01 09:59:55,415 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) [2023-09-01 09:59:55,415 INFO L175 Difference]: Start difference. First operand has 72 places, 38 transitions, 276 flow. Second operand 8 states and 744 transitions. [2023-09-01 09:59:55,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 62 transitions, 592 flow [2023-09-01 09:59:55,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 552 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-09-01 09:59:55,418 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2023-09-01 09:59:55,418 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} [2023-09-01 09:59:55,419 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2023-09-01 09:59:55,419 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2023-09-01 09:59:55,419 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) [2023-09-01 09:59:55,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-09-01 09:59:55,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-09-01 09:59:55,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-09-01 09:59:55,422 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-09-01 09:59:55,423 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-09-01 09:59:55,423 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-09-01 09:59:55,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 09:59:55,423 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 2, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:55,427 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:59:55,428 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:59:55,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:59:55 BasicIcfg [2023-09-01 09:59:55,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:59:55,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:59:55,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:59:55,431 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:59:55,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:19" (3/4) ... [2023-09-01 09:59:55,433 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:59:55,437 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-09-01 09:59:55,438 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-09-01 09:59:55,438 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-09-01 09:59:55,442 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2023-09-01 09:59:55,442 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-09-01 09:59:55,442 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 09:59:55,442 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:59:55,480 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:59:55,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:59:55,481 INFO L158 Benchmark]: Toolchain (without parser) took 37966.11ms. Allocated memory was 96.5MB in the beginning and 740.3MB in the end (delta: 643.8MB). Free memory was 72.7MB in the beginning and 370.8MB in the end (delta: -298.1MB). Peak memory consumption was 348.2MB. Max. memory is 16.1GB. [2023-09-01 09:59:55,481 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 67.1MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:59:55,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 510.90ms. Allocated memory is still 96.5MB. Free memory was 72.7MB in the beginning and 72.7MB in the end (delta: -53.2kB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2023-09-01 09:59:55,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.30ms. Allocated memory is still 96.5MB. Free memory was 72.7MB in the beginning and 69.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 09:59:55,482 INFO L158 Benchmark]: Boogie Preprocessor took 51.02ms. Allocated memory is still 96.5MB. Free memory was 69.3MB in the beginning and 67.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:59:55,482 INFO L158 Benchmark]: RCFGBuilder took 964.41ms. Allocated memory is still 96.5MB. Free memory was 66.8MB in the beginning and 64.5MB in the end (delta: 2.3MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2023-09-01 09:59:55,482 INFO L158 Benchmark]: TraceAbstraction took 36281.47ms. Allocated memory was 96.5MB in the beginning and 740.3MB in the end (delta: 643.8MB). Free memory was 63.5MB in the beginning and 374.0MB in the end (delta: -310.5MB). Peak memory consumption was 331.8MB. Max. memory is 16.1GB. [2023-09-01 09:59:55,484 INFO L158 Benchmark]: Witness Printer took 49.68ms. Allocated memory is still 740.3MB. Free memory was 374.0MB in the beginning and 370.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 09:59:55,486 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 67.1MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 510.90ms. Allocated memory is still 96.5MB. Free memory was 72.7MB in the beginning and 72.7MB in the end (delta: -53.2kB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.30ms. Allocated memory is still 96.5MB. Free memory was 72.7MB in the beginning and 69.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.02ms. Allocated memory is still 96.5MB. Free memory was 69.3MB in the beginning and 67.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 964.41ms. Allocated memory is still 96.5MB. Free memory was 66.8MB in the beginning and 64.5MB in the end (delta: 2.3MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. * TraceAbstraction took 36281.47ms. Allocated memory was 96.5MB in the beginning and 740.3MB in the end (delta: 643.8MB). Free memory was 63.5MB in the beginning and 374.0MB in the end (delta: -310.5MB). Peak memory consumption was 331.8MB. Max. memory is 16.1GB. * Witness Printer took 49.68ms. Allocated memory is still 740.3MB. Free memory was 374.0MB in the beginning and 370.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 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: 36.1s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1124 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 965 mSDsluCounter, 893 SdHoareTripleChecker+Invalid, 3.6s 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, 1.2s SatisfiabilityAnalysisTime, 18.9s 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! [2023-09-01 09:59:55,519 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