./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.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/safe032_tso.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 ffff09405c16ea86880fae0b9b6268edfa5ef4b2d03cee31a9e4f2e1ac044811 --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 09:59:03,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:59:03,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:59:03,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:59:03,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:59:03,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:59:03,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:59:03,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:59:03,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:59:03,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:59:03,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:59:03,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:59:03,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:59:03,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:59:03,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:59:03,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:59:03,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:59:03,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:59:03,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:59:03,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:59:03,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:59:03,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:59:03,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:59:03,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:59:03,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:59:03,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:59:03,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:59:03,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:59:03,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:59:03,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:59:03,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:59:03,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:59:03,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:59:03,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:59:03,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:59:03,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:59:03,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:59:03,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:59:03,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:59:03,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:59:03,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:59:03,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:59:03,651 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:59:03,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:59:03,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:59:03,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:59:03,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:59:03,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:59:03,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:59:03,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:59:03,654 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:59:03,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:59:03,655 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:59:03,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:59:03,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:59:03,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:59:03,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:59:03,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:59:03,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:59:03,656 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:59:03,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:59:03,656 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:59:03,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:59:03,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:59:03,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:59:03,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:59:03,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:03,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:59:03,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:59:03,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:59:03,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:59:03,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:59:03,658 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:59:03,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:59:03,658 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:59:03,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:59:03,658 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:59:03,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffff09405c16ea86880fae0b9b6268edfa5ef4b2d03cee31a9e4f2e1ac044811 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:59:03,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:59:03,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:59:03,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:59:03,897 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:59:03,897 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:59:03,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.i [2023-09-01 09:59:04,770 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:59:05,001 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:59:05,004 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.i [2023-09-01 09:59:05,017 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eda8dbb0/b82ff4e4a0794fbb9b7513d74a62c9f5/FLAGf90b6b02a [2023-09-01 09:59:05,027 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eda8dbb0/b82ff4e4a0794fbb9b7513d74a62c9f5 [2023-09-01 09:59:05,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:59:05,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:59:05,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:05,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:59:05,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:59:05,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:05" (1/1) ... [2023-09-01 09:59:05,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5e7bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:05, skipping insertion in model container [2023-09-01 09:59:05,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:05" (1/1) ... [2023-09-01 09:59:05,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:59:05,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:59:05,207 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/safe032_tso.i[945,958] [2023-09-01 09:59:05,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:59:05,335 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:59:05,345 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/safe032_tso.i[945,958] [2023-09-01 09:59:05,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:59:05,416 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:59:05,417 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:59:05,421 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:59:05,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:05 WrapperNode [2023-09-01 09:59:05,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:05,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:59:05,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:59:05,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:59:05,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:05" (1/1) ... [2023-09-01 09:59:05,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:05" (1/1) ... [2023-09-01 09:59:05,445 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-09-01 09:59:05,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:59:05,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:59:05,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:59:05,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:59:05,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:05" (1/1) ... [2023-09-01 09:59:05,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:05" (1/1) ... [2023-09-01 09:59:05,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:05" (1/1) ... [2023-09-01 09:59:05,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:05" (1/1) ... [2023-09-01 09:59:05,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:05" (1/1) ... [2023-09-01 09:59:05,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:05" (1/1) ... [2023-09-01 09:59:05,458 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:05" (1/1) ... [2023-09-01 09:59:05,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:05" (1/1) ... [2023-09-01 09:59:05,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:59:05,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:59:05,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:59:05,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:59:05,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:05" (1/1) ... [2023-09-01 09:59:05,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:05,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:59:05,481 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 09:59:05,484 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 09:59:05,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:59:05,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:59:05,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:59:05,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:59:05,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:59:05,508 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:59:05,508 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:59:05,508 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:59:05,509 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:59:05,509 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-09-01 09:59:05,509 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-09-01 09:59:05,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:59:05,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:59:05,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:59:05,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:59:05,510 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 09:59:05,595 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:59:05,596 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:59:05,753 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:59:05,757 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:59:05,758 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:59:05,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:05 BoogieIcfgContainer [2023-09-01 09:59:05,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:59:05,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:59:05,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:59:05,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:59:05,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:59:05" (1/3) ... [2023-09-01 09:59:05,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5dd2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:59:05, skipping insertion in model container [2023-09-01 09:59:05,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:05" (2/3) ... [2023-09-01 09:59:05,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5dd2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:59:05, skipping insertion in model container [2023-09-01 09:59:05,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:05" (3/3) ... [2023-09-01 09:59:05,764 INFO L112 eAbstractionObserver]: Analyzing ICFG safe032_tso.i [2023-09-01 09:59:05,769 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:59:05,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:59:05,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 09:59:05,776 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:59:05,834 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:59:05,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-09-01 09:59:05,905 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-09-01 09:59:05,906 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:59:05,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-09-01 09:59:05,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-09-01 09:59:05,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-09-01 09:59:05,915 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:59:05,924 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-09-01 09:59:05,930 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-09-01 09:59:05,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-09-01 09:59:05,951 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-09-01 09:59:05,952 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:59:05,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-09-01 09:59:05,954 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-09-01 09:59:07,365 INFO L134 LiptonReduction]: Checked pairs total: 2014 [2023-09-01 09:59:07,366 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-09-01 09:59:07,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:59:07,379 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;@211baa66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:59:07,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 09:59:07,382 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-09-01 09:59:07,383 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:59:07,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:07,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:07,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:59:07,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:07,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1436459342, now seen corresponding path program 1 times [2023-09-01 09:59:07,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:07,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675721611] [2023-09-01 09:59:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:07,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:07,763 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 09:59:07,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:07,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675721611] [2023-09-01 09:59:07,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675721611] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:07,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:07,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:59:07,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382199893] [2023-09-01 09:59:07,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:07,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:59:07,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:07,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:59:07,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:59:07,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 141 [2023-09-01 09:59:07,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 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 09:59:07,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:07,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 141 [2023-09-01 09:59:07,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:07,893 INFO L130 PetriNetUnfolder]: 202/351 cut-off events. [2023-09-01 09:59:07,894 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 09:59:07,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 351 events. 202/351 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1469 event pairs, 52 based on Foata normal form. 6/356 useless extension candidates. Maximal degree in co-relation 700. Up to 296 conditions per place. [2023-09-01 09:59:07,898 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 22 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-09-01 09:59:07,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 119 flow [2023-09-01 09:59:07,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:59:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:59:07,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-09-01 09:59:07,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981087470449172 [2023-09-01 09:59:07,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-09-01 09:59:07,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-09-01 09:59:07,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:07,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-09-01 09:59:07,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 09:59:07,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 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 09:59:07,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 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 09:59:07,924 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 253 transitions. [2023-09-01 09:59:07,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 119 flow [2023-09-01 09:59:07,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 09:59:07,927 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-09-01 09:59:07,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-09-01 09:59:07,931 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-09-01 09:59:07,931 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-09-01 09:59:07,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 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 09:59:07,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:07,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:07,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:59:07,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:59:07,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:07,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1580567079, now seen corresponding path program 1 times [2023-09-01 09:59:07,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:07,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012420350] [2023-09-01 09:59:07,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:07,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:08,122 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 09:59:08,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:08,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012420350] [2023-09-01 09:59:08,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012420350] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:08,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:08,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:59:08,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412266155] [2023-09-01 09:59:08,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:08,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:59:08,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:08,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:59:08,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:59:08,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-09-01 09:59:08,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 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 09:59:08,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:08,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-09-01 09:59:08,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:08,218 INFO L130 PetriNetUnfolder]: 486/777 cut-off events. [2023-09-01 09:59:08,218 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2023-09-01 09:59:08,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1807 conditions, 777 events. 486/777 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3086 event pairs, 63 based on Foata normal form. 55/832 useless extension candidates. Maximal degree in co-relation 1796. Up to 544 conditions per place. [2023-09-01 09:59:08,222 INFO L137 encePairwiseOnDemand]: 133/141 looper letters, 29 selfloop transitions, 11 changer transitions 0/40 dead transitions. [2023-09-01 09:59:08,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 40 transitions, 196 flow [2023-09-01 09:59:08,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:59:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:59:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-09-01 09:59:08,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514184397163121 [2023-09-01 09:59:08,226 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-09-01 09:59:08,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-09-01 09:59:08,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:08,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-09-01 09:59:08,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 09:59:08,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:08,230 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:08,230 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 4 states and 311 transitions. [2023-09-01 09:59:08,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 40 transitions, 196 flow [2023-09-01 09:59:08,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:59:08,232 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 142 flow [2023-09-01 09:59:08,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-09-01 09:59:08,232 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-09-01 09:59:08,233 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 142 flow [2023-09-01 09:59:08,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 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 09:59:08,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:08,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:08,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:59:08,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:59:08,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:08,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1702059071, now seen corresponding path program 1 times [2023-09-01 09:59:08,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:08,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837971841] [2023-09-01 09:59:08,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:08,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:08,375 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 09:59:08,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:08,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837971841] [2023-09-01 09:59:08,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837971841] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:08,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:08,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:59:08,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844970906] [2023-09-01 09:59:08,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:08,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:59:08,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:08,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:59:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:59:08,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-09-01 09:59:08,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 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 09:59:08,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:08,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-09-01 09:59:08,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:08,458 INFO L130 PetriNetUnfolder]: 426/683 cut-off events. [2023-09-01 09:59:08,459 INFO L131 PetriNetUnfolder]: For 507/507 co-relation queries the response was YES. [2023-09-01 09:59:08,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 683 events. 426/683 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2629 event pairs, 114 based on Foata normal form. 11/694 useless extension candidates. Maximal degree in co-relation 2112. Up to 298 conditions per place. [2023-09-01 09:59:08,463 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 37 selfloop transitions, 9 changer transitions 4/50 dead transitions. [2023-09-01 09:59:08,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 338 flow [2023-09-01 09:59:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:59:08,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:59:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-09-01 09:59:08,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2023-09-01 09:59:08,464 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-09-01 09:59:08,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-09-01 09:59:08,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:08,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-09-01 09:59:08,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 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 09:59:08,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:08,467 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:08,467 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 142 flow. Second operand 4 states and 309 transitions. [2023-09-01 09:59:08,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 338 flow [2023-09-01 09:59:08,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 338 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:59:08,470 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 216 flow [2023-09-01 09:59:08,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-09-01 09:59:08,471 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-09-01 09:59:08,473 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 216 flow [2023-09-01 09:59:08,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 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 09:59:08,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:08,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:08,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:59:08,474 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:59:08,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2019576857, now seen corresponding path program 1 times [2023-09-01 09:59:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:08,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2729339] [2023-09-01 09:59:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:08,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:08,591 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 09:59:08,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:08,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2729339] [2023-09-01 09:59:08,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2729339] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:08,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:08,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:59:08,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31187499] [2023-09-01 09:59:08,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:08,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:59:08,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:08,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:59:08,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:59:08,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-09-01 09:59:08,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 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 09:59:08,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:08,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-09-01 09:59:08,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:08,696 INFO L130 PetriNetUnfolder]: 488/805 cut-off events. [2023-09-01 09:59:08,697 INFO L131 PetriNetUnfolder]: For 1124/1124 co-relation queries the response was YES. [2023-09-01 09:59:08,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2806 conditions, 805 events. 488/805 cut-off events. For 1124/1124 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3425 event pairs, 120 based on Foata normal form. 8/813 useless extension candidates. Maximal degree in co-relation 2786. Up to 392 conditions per place. [2023-09-01 09:59:08,700 INFO L137 encePairwiseOnDemand]: 133/141 looper letters, 35 selfloop transitions, 15 changer transitions 10/60 dead transitions. [2023-09-01 09:59:08,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 480 flow [2023-09-01 09:59:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:59:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:59:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-09-01 09:59:08,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2023-09-01 09:59:08,701 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-09-01 09:59:08,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-09-01 09:59:08,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:08,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-09-01 09:59:08,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 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 09:59:08,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:08,703 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:08,719 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 216 flow. Second operand 4 states and 315 transitions. [2023-09-01 09:59:08,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 480 flow [2023-09-01 09:59:08,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 468 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 09:59:08,726 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 313 flow [2023-09-01 09:59:08,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-09-01 09:59:08,727 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-09-01 09:59:08,727 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 313 flow [2023-09-01 09:59:08,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 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 09:59:08,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:08,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:08,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:59:08,728 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:59:08,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:08,728 INFO L85 PathProgramCache]: Analyzing trace with hash -947888225, now seen corresponding path program 1 times [2023-09-01 09:59:08,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:08,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688424659] [2023-09-01 09:59:08,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:08,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:08,880 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 09:59:08,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:08,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688424659] [2023-09-01 09:59:08,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688424659] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:08,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:08,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:59:08,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325122165] [2023-09-01 09:59:08,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:08,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:59:08,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:08,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:59:08,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:59:08,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:59:08,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 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 09:59:08,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:08,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:59:08,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:08,930 INFO L130 PetriNetUnfolder]: 135/278 cut-off events. [2023-09-01 09:59:08,930 INFO L131 PetriNetUnfolder]: For 1295/1310 co-relation queries the response was YES. [2023-09-01 09:59:08,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1120 conditions, 278 events. 135/278 cut-off events. For 1295/1310 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1133 event pairs, 28 based on Foata normal form. 16/288 useless extension candidates. Maximal degree in co-relation 1097. Up to 180 conditions per place. [2023-09-01 09:59:08,932 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 33 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-09-01 09:59:08,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 502 flow [2023-09-01 09:59:08,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:59:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:59:08,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-09-01 09:59:08,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5839243498817966 [2023-09-01 09:59:08,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-09-01 09:59:08,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-09-01 09:59:08,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:08,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-09-01 09:59:08,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 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 09:59:08,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 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 09:59:08,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 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 09:59:08,934 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 313 flow. Second operand 3 states and 247 transitions. [2023-09-01 09:59:08,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 502 flow [2023-09-01 09:59:08,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:59:08,937 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 336 flow [2023-09-01 09:59:08,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-09-01 09:59:08,937 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-09-01 09:59:08,937 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 336 flow [2023-09-01 09:59:08,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 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 09:59:08,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:08,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:08,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:59:08,938 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:59:08,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:08,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1931314573, now seen corresponding path program 1 times [2023-09-01 09:59:08,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:08,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504271522] [2023-09-01 09:59:08,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:08,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:09,036 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 09:59:09,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:09,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504271522] [2023-09-01 09:59:09,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504271522] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:09,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:09,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:59:09,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4770104] [2023-09-01 09:59:09,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:09,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:59:09,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:09,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:59:09,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:59:09,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:59:09,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 09:59:09,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:09,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:59:09,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:09,092 INFO L130 PetriNetUnfolder]: 95/204 cut-off events. [2023-09-01 09:59:09,093 INFO L131 PetriNetUnfolder]: For 866/889 co-relation queries the response was YES. [2023-09-01 09:59:09,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 204 events. 95/204 cut-off events. For 866/889 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 766 event pairs, 15 based on Foata normal form. 32/230 useless extension candidates. Maximal degree in co-relation 933. Up to 75 conditions per place. [2023-09-01 09:59:09,094 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 36 selfloop transitions, 7 changer transitions 1/57 dead transitions. [2023-09-01 09:59:09,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 580 flow [2023-09-01 09:59:09,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:59:09,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:59:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 328 transitions. [2023-09-01 09:59:09,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5815602836879432 [2023-09-01 09:59:09,096 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 328 transitions. [2023-09-01 09:59:09,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 328 transitions. [2023-09-01 09:59:09,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:09,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 328 transitions. [2023-09-01 09:59:09,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 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 09:59:09,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:09,099 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:59:09,099 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 336 flow. Second operand 4 states and 328 transitions. [2023-09-01 09:59:09,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 580 flow [2023-09-01 09:59:09,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 570 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 09:59:09,103 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 360 flow [2023-09-01 09:59:09,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=360, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-09-01 09:59:09,104 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-09-01 09:59:09,104 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 360 flow [2023-09-01 09:59:09,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 09:59:09,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:09,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:09,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:59:09,105 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 09:59:09,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:09,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1798537270, now seen corresponding path program 1 times [2023-09-01 09:59:09,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:09,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982408426] [2023-09-01 09:59:09,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:09,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:09,262 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 09:59:09,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:09,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982408426] [2023-09-01 09:59:09,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982408426] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:09,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:09,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:59:09,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454679824] [2023-09-01 09:59:09,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:09,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:59:09,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:09,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:59:09,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:59:09,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:59:09,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 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 09:59:09,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:09,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:59:09,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:09,305 INFO L130 PetriNetUnfolder]: 88/184 cut-off events. [2023-09-01 09:59:09,305 INFO L131 PetriNetUnfolder]: For 966/996 co-relation queries the response was YES. [2023-09-01 09:59:09,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 184 events. 88/184 cut-off events. For 966/996 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 688 event pairs, 14 based on Foata normal form. 23/201 useless extension candidates. Maximal degree in co-relation 879. Up to 67 conditions per place. [2023-09-01 09:59:09,306 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2023-09-01 09:59:09,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 580 flow [2023-09-01 09:59:09,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:59:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:59:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-09-01 09:59:09,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2023-09-01 09:59:09,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-09-01 09:59:09,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-09-01 09:59:09,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:09,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-09-01 09:59:09,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 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 09:59:09,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 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 09:59:09,310 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 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 09:59:09,310 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 360 flow. Second operand 5 states and 400 transitions. [2023-09-01 09:59:09,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 580 flow [2023-09-01 09:59:09,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 556 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-09-01 09:59:09,312 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-09-01 09:59:09,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-09-01 09:59:09,313 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-09-01 09:59:09,313 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-09-01 09:59:09,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 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 09:59:09,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-09-01 09:59:09,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-09-01 09:59:09,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 09:59:09,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 09:59:09,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 09:59:09,316 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:59:09,318 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:59:09,318 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:59:09,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:59:09 BasicIcfg [2023-09-01 09:59:09,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:59:09,320 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:59:09,320 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:59:09,320 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:59:09,321 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:05" (3/4) ... [2023-09-01 09:59:09,322 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:59:09,326 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-09-01 09:59:09,326 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-09-01 09:59:09,326 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-09-01 09:59:09,329 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-09-01 09:59:09,329 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 09:59:09,329 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 09:59:09,329 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:59:09,347 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:59:09,347 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:59:09,348 INFO L158 Benchmark]: Toolchain (without parser) took 4317.77ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 67.4MB in the beginning and 63.7MB in the end (delta: 3.7MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2023-09-01 09:59:09,348 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 67.1MB. Free memory is still 45.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:59:09,348 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.10ms. Allocated memory is still 90.2MB. Free memory was 67.2MB in the beginning and 69.2MB in the end (delta: -2.0MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2023-09-01 09:59:09,348 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.58ms. Allocated memory is still 90.2MB. Free memory was 69.2MB in the beginning and 67.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:59:09,349 INFO L158 Benchmark]: Boogie Preprocessor took 13.87ms. Allocated memory is still 90.2MB. Free memory was 67.1MB in the beginning and 65.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:59:09,349 INFO L158 Benchmark]: RCFGBuilder took 298.71ms. Allocated memory is still 90.2MB. Free memory was 65.7MB in the beginning and 52.4MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 09:59:09,349 INFO L158 Benchmark]: TraceAbstraction took 3559.36ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 51.7MB in the beginning and 66.8MB in the end (delta: -15.1MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2023-09-01 09:59:09,349 INFO L158 Benchmark]: Witness Printer took 27.39ms. Allocated memory is still 132.1MB. Free memory was 66.8MB in the beginning and 63.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 09:59:09,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 67.1MB. Free memory is still 45.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 390.10ms. Allocated memory is still 90.2MB. Free memory was 67.2MB in the beginning and 69.2MB in the end (delta: -2.0MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.58ms. Allocated memory is still 90.2MB. Free memory was 69.2MB in the beginning and 67.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.87ms. Allocated memory is still 90.2MB. Free memory was 67.1MB in the beginning and 65.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 298.71ms. Allocated memory is still 90.2MB. Free memory was 65.7MB in the beginning and 52.4MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3559.36ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 51.7MB in the beginning and 66.8MB in the end (delta: -15.1MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. * Witness Printer took 27.39ms. Allocated memory is still 132.1MB. Free memory was 66.8MB in the beginning and 63.7MB 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: 1.4s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 57 TotalNumberOfCompositions, 2014 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1147, independent: 1065, independent conditional: 0, independent unconditional: 1065, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 612, independent: 587, independent conditional: 0, independent unconditional: 587, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1147, independent: 478, independent conditional: 0, independent unconditional: 478, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 612, unknown conditional: 0, unknown unconditional: 612] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 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: 3.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 299 IncrementalHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 28 mSDtfsCounter, 299 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=360occurred in iteration=6, InterpolantAutomatonStates: 27, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 09:59:09,363 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