./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/safe030_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 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:58:58,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:58:58,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:58:58,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:58:58,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:58:58,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:58:58,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:58:58,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:58:58,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:58:58,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:58:58,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:58:58,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:58:58,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:58:58,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:58:58,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:58:58,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:58:58,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:58:58,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:58:58,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:58:58,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:58:58,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:58:58,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:58:58,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:58:58,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:58:58,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:58:58,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:58:58,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:58:58,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:58:58,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:58:58,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:58:58,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:58:58,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:58:58,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:58:58,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:58:58,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:58:58,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:58:58,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:58:58,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:58:58,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:58:58,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:58:58,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:58:58,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:58:58,619 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:58:58,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:58:58,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:58:58,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:58:58,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:58:58,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:58:58,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:58:58,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:58:58,622 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:58:58,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:58:58,623 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:58:58,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:58:58,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:58:58,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:58:58,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:58:58,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:58:58,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:58:58,625 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:58:58,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:58:58,625 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:58:58,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:58:58,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:58:58,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:58:58,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:58:58,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:58:58,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:58:58,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:58:58,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:58:58,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:58:58,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:58:58,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:58:58,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:58:58,628 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:58:58,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:58:58,628 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:58:58,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:58:58,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:58:59,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:58:59,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:58:59,005 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:58:59,005 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:58:59,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.i [2023-08-30 16:59:00,287 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:59:00,577 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:59:00,577 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.i [2023-08-30 16:59:00,595 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a056c83b5/0425ee399ece4d93aefba70aa2bcc503/FLAGe439c25c7 [2023-08-30 16:59:00,608 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a056c83b5/0425ee399ece4d93aefba70aa2bcc503 [2023-08-30 16:59:00,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:59:00,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:59:00,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:59:00,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:59:00,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:59:00,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:59:00" (1/1) ... [2023-08-30 16:59:00,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@648e01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:00, skipping insertion in model container [2023-08-30 16:59:00,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:59:00" (1/1) ... [2023-08-30 16:59:00,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:59:00,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:59:00,803 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/safe030_tso.i[945,958] [2023-08-30 16:59:00,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:59:01,010 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:59:01,025 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/safe030_tso.i[945,958] [2023-08-30 16:59:01,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:59:01,109 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:59:01,110 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:59:01,116 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:59:01,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:01 WrapperNode [2023-08-30 16:59:01,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:59:01,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:59:01,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:59:01,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:59:01,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:01" (1/1) ... [2023-08-30 16:59:01,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:01" (1/1) ... [2023-08-30 16:59:01,180 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-08-30 16:59:01,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:59:01,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:59:01,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:59:01,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:59:01,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:01" (1/1) ... [2023-08-30 16:59:01,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:01" (1/1) ... [2023-08-30 16:59:01,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:01" (1/1) ... [2023-08-30 16:59:01,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:01" (1/1) ... [2023-08-30 16:59:01,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:01" (1/1) ... [2023-08-30 16:59:01,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:01" (1/1) ... [2023-08-30 16:59:01,213 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:01" (1/1) ... [2023-08-30 16:59:01,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:01" (1/1) ... [2023-08-30 16:59:01,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:59:01,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:59:01,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:59:01,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:59:01,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:01" (1/1) ... [2023-08-30 16:59:01,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:59:01,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:59:01,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 16:59:01,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 16:59:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:59:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:59:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:59:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:59:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:59:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 16:59:01,298 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 16:59:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 16:59:01,299 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 16:59:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 16:59:01,299 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 16:59:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:59:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:59:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:59:01,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:59:01,301 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:59:01,479 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:59:01,481 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:59:01,692 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:59:01,698 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:59:01,699 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:59:01,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:01 BoogieIcfgContainer [2023-08-30 16:59:01,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:59:01,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:59:01,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:59:01,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:59:01,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:59:00" (1/3) ... [2023-08-30 16:59:01,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1f45cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:59:01, skipping insertion in model container [2023-08-30 16:59:01,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:01" (2/3) ... [2023-08-30 16:59:01,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1f45cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:59:01, skipping insertion in model container [2023-08-30 16:59:01,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:01" (3/3) ... [2023-08-30 16:59:01,707 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_tso.i [2023-08-30 16:59:01,714 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:59:01,722 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:59:01,722 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 16:59:01,723 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:59:01,781 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:59:01,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2023-08-30 16:59:01,859 INFO L130 PetriNetUnfolder]: 2/80 cut-off events. [2023-08-30 16:59:01,859 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:59:01,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-30 16:59:01,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2023-08-30 16:59:01,866 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2023-08-30 16:59:01,869 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:59:01,877 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 68 transitions, 145 flow [2023-08-30 16:59:01,879 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 68 transitions, 145 flow [2023-08-30 16:59:01,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 68 transitions, 145 flow [2023-08-30 16:59:01,894 INFO L130 PetriNetUnfolder]: 1/68 cut-off events. [2023-08-30 16:59:01,894 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:59:01,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-30 16:59:01,896 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-30 16:59:03,680 INFO L134 LiptonReduction]: Checked pairs total: 2020 [2023-08-30 16:59:03,680 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-08-30 16:59:03,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:59:03,699 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;@11c8f5d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:59:03,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 16:59:03,704 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-08-30 16:59:03,704 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:59:03,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:03,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:03,705 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)] === [2023-08-30 16:59:03,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:03,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1680897214, now seen corresponding path program 1 times [2023-08-30 16:59:03,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:03,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140211727] [2023-08-30 16:59:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:03,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:04,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:04,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140211727] [2023-08-30 16:59:04,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140211727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:04,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:04,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:59:04,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006409644] [2023-08-30 16:59:04,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:04,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:59:04,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:04,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:59:04,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:59:04,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:59:04,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:04,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:04,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:59:04,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:04,571 INFO L130 PetriNetUnfolder]: 553/883 cut-off events. [2023-08-30 16:59:04,572 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 16:59:04,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1821 conditions, 883 events. 553/883 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3738 event pairs, 267 based on Foata normal form. 57/940 useless extension candidates. Maximal degree in co-relation 1810. Up to 531 conditions per place. [2023-08-30 16:59:04,581 INFO L137 encePairwiseOnDemand]: 130/139 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-08-30 16:59:04,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-08-30 16:59:04,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:59:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:59:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-08-30 16:59:04,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5707434052757794 [2023-08-30 16:59:04,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-08-30 16:59:04,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-08-30 16:59:04,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:04,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-08-30 16:59:04,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:04,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:04,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:04,614 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 238 transitions. [2023-08-30 16:59:04,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-08-30 16:59:04,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 16:59:04,619 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-08-30 16:59:04,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, 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=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-08-30 16:59:04,625 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-30 16:59:04,625 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-08-30 16:59:04,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:04,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:04,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:04,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:59:04,631 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)] === [2023-08-30 16:59:04,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:04,632 INFO L85 PathProgramCache]: Analyzing trace with hash -568206550, now seen corresponding path program 1 times [2023-08-30 16:59:04,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:04,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450027003] [2023-08-30 16:59:04,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:04,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:04,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:04,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:04,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450027003] [2023-08-30 16:59:04,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450027003] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:04,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:04,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:59:04,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620335979] [2023-08-30 16:59:04,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:04,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:59:04,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:59:04,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:59:04,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:59:04,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 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) [2023-08-30 16:59:04,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:04,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:59:04,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:05,018 INFO L130 PetriNetUnfolder]: 527/844 cut-off events. [2023-08-30 16:59:05,018 INFO L131 PetriNetUnfolder]: For 378/378 co-relation queries the response was YES. [2023-08-30 16:59:05,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2492 conditions, 844 events. 527/844 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3462 event pairs, 77 based on Foata normal form. 5/849 useless extension candidates. Maximal degree in co-relation 2480. Up to 474 conditions per place. [2023-08-30 16:59:05,025 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 31 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2023-08-30 16:59:05,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 248 flow [2023-08-30 16:59:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:59:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:59:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-08-30 16:59:05,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5593525179856115 [2023-08-30 16:59:05,028 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-08-30 16:59:05,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-08-30 16:59:05,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:05,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-08-30 16:59:05,029 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) [2023-08-30 16:59:05,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:05,031 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:05,031 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 311 transitions. [2023-08-30 16:59:05,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 248 flow [2023-08-30 16:59:05,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:59:05,035 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 164 flow [2023-08-30 16:59:05,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2023-08-30 16:59:05,036 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-30 16:59:05,036 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 164 flow [2023-08-30 16:59:05,036 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) [2023-08-30 16:59:05,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:05,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:05,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:59:05,037 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)] === [2023-08-30 16:59:05,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:05,038 INFO L85 PathProgramCache]: Analyzing trace with hash -568207201, now seen corresponding path program 1 times [2023-08-30 16:59:05,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:05,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511395732] [2023-08-30 16:59:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:05,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:05,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:05,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511395732] [2023-08-30 16:59:05,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511395732] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:05,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:05,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:59:05,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113025358] [2023-08-30 16:59:05,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:05,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:59:05,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:05,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:59:05,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:59:05,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:59:05,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 164 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) [2023-08-30 16:59:05,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:05,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:59:05,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:05,285 INFO L130 PetriNetUnfolder]: 507/814 cut-off events. [2023-08-30 16:59:05,285 INFO L131 PetriNetUnfolder]: For 689/689 co-relation queries the response was YES. [2023-08-30 16:59:05,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2727 conditions, 814 events. 507/814 cut-off events. For 689/689 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3334 event pairs, 87 based on Foata normal form. 4/818 useless extension candidates. Maximal degree in co-relation 2712. Up to 486 conditions per place. [2023-08-30 16:59:05,290 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 36 selfloop transitions, 17 changer transitions 0/53 dead transitions. [2023-08-30 16:59:05,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 53 transitions, 372 flow [2023-08-30 16:59:05,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:59:05,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:59:05,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2023-08-30 16:59:05,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5629496402877698 [2023-08-30 16:59:05,292 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2023-08-30 16:59:05,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2023-08-30 16:59:05,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:05,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2023-08-30 16:59:05,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:05,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:05,296 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:05,296 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 164 flow. Second operand 4 states and 313 transitions. [2023-08-30 16:59:05,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 53 transitions, 372 flow [2023-08-30 16:59:05,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:59:05,302 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 304 flow [2023-08-30 16:59:05,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-08-30 16:59:05,303 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-30 16:59:05,306 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 304 flow [2023-08-30 16:59:05,306 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) [2023-08-30 16:59:05,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:05,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:05,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:59:05,307 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)] === [2023-08-30 16:59:05,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:05,307 INFO L85 PathProgramCache]: Analyzing trace with hash -434535946, now seen corresponding path program 1 times [2023-08-30 16:59:05,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:05,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311847845] [2023-08-30 16:59:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:05,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:05,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311847845] [2023-08-30 16:59:05,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311847845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:05,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:05,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:59:05,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614052806] [2023-08-30 16:59:05,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:05,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:59:05,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:05,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:59:05,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:59:05,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:59:05,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 304 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) [2023-08-30 16:59:05,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:05,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:59:05,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:05,618 INFO L130 PetriNetUnfolder]: 493/793 cut-off events. [2023-08-30 16:59:05,619 INFO L131 PetriNetUnfolder]: For 1703/1703 co-relation queries the response was YES. [2023-08-30 16:59:05,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3226 conditions, 793 events. 493/793 cut-off events. For 1703/1703 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3208 event pairs, 81 based on Foata normal form. 3/796 useless extension candidates. Maximal degree in co-relation 3206. Up to 468 conditions per place. [2023-08-30 16:59:05,624 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 41 selfloop transitions, 22 changer transitions 0/63 dead transitions. [2023-08-30 16:59:05,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 63 transitions, 560 flow [2023-08-30 16:59:05,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:59:05,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:59:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-08-30 16:59:05,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5665467625899281 [2023-08-30 16:59:05,627 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-08-30 16:59:05,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-08-30 16:59:05,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:05,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-08-30 16:59:05,628 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) [2023-08-30 16:59:05,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:05,630 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:05,630 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 304 flow. Second operand 4 states and 315 transitions. [2023-08-30 16:59:05,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 63 transitions, 560 flow [2023-08-30 16:59:05,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 560 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:59:05,636 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 482 flow [2023-08-30 16:59:05,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=482, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-08-30 16:59:05,637 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-08-30 16:59:05,637 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 482 flow [2023-08-30 16:59:05,638 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) [2023-08-30 16:59:05,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:05,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:05,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:59:05,638 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)] === [2023-08-30 16:59:05,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:05,639 INFO L85 PathProgramCache]: Analyzing trace with hash -585709713, now seen corresponding path program 1 times [2023-08-30 16:59:05,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:05,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923139626] [2023-08-30 16:59:05,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:05,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:05,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:05,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923139626] [2023-08-30 16:59:05,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923139626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:05,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:05,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:59:05,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995757010] [2023-08-30 16:59:05,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:05,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:59:05,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:05,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:59:05,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:59:05,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:59:05,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 482 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) [2023-08-30 16:59:05,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:05,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:59:05,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:05,933 INFO L130 PetriNetUnfolder]: 580/954 cut-off events. [2023-08-30 16:59:05,933 INFO L131 PetriNetUnfolder]: For 3686/3686 co-relation queries the response was YES. [2023-08-30 16:59:05,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 954 events. 580/954 cut-off events. For 3686/3686 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4271 event pairs, 110 based on Foata normal form. 8/962 useless extension candidates. Maximal degree in co-relation 4297. Up to 360 conditions per place. [2023-08-30 16:59:05,948 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 39 selfloop transitions, 26 changer transitions 3/68 dead transitions. [2023-08-30 16:59:05,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 68 transitions, 718 flow [2023-08-30 16:59:05,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:59:05,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:59:05,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-08-30 16:59:05,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683453237410072 [2023-08-30 16:59:05,950 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-08-30 16:59:05,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-08-30 16:59:05,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:05,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-08-30 16:59:05,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:05,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:05,953 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:05,954 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 482 flow. Second operand 4 states and 316 transitions. [2023-08-30 16:59:05,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 68 transitions, 718 flow [2023-08-30 16:59:05,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 718 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:59:05,963 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 602 flow [2023-08-30 16:59:05,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=602, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2023-08-30 16:59:05,965 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-08-30 16:59:05,965 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 602 flow [2023-08-30 16:59:05,966 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) [2023-08-30 16:59:05,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:05,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:05,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:59:05,966 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)] === [2023-08-30 16:59:05,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:05,967 INFO L85 PathProgramCache]: Analyzing trace with hash -585664546, now seen corresponding path program 1 times [2023-08-30 16:59:05,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:05,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849985441] [2023-08-30 16:59:05,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:05,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:06,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849985441] [2023-08-30 16:59:06,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849985441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:06,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:06,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:59:06,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784602809] [2023-08-30 16:59:06,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:06,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:59:06,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:06,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:59:06,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:59:06,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 139 [2023-08-30 16:59:06,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:06,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 139 [2023-08-30 16:59:06,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:06,214 INFO L130 PetriNetUnfolder]: 223/467 cut-off events. [2023-08-30 16:59:06,215 INFO L131 PetriNetUnfolder]: For 3864/3902 co-relation queries the response was YES. [2023-08-30 16:59:06,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 467 events. 223/467 cut-off events. For 3864/3902 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2412 event pairs, 42 based on Foata normal form. 45/504 useless extension candidates. Maximal degree in co-relation 2236. Up to 331 conditions per place. [2023-08-30 16:59:06,220 INFO L137 encePairwiseOnDemand]: 134/139 looper letters, 48 selfloop transitions, 4 changer transitions 1/70 dead transitions. [2023-08-30 16:59:06,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 960 flow [2023-08-30 16:59:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:59:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:59:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-30 16:59:06,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851318944844125 [2023-08-30 16:59:06,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-30 16:59:06,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-30 16:59:06,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:06,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-30 16:59:06,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,225 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,225 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 602 flow. Second operand 3 states and 244 transitions. [2023-08-30 16:59:06,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 960 flow [2023-08-30 16:59:06,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 956 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 16:59:06,233 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 626 flow [2023-08-30 16:59:06,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=626, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-08-30 16:59:06,235 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2023-08-30 16:59:06,236 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 626 flow [2023-08-30 16:59:06,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:06,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:06,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:59:06,237 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)] === [2023-08-30 16:59:06,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:06,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1516080190, now seen corresponding path program 1 times [2023-08-30 16:59:06,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:06,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848360984] [2023-08-30 16:59:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:06,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:06,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:06,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848360984] [2023-08-30 16:59:06,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848360984] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:06,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:06,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:59:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673645306] [2023-08-30 16:59:06,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:06,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:59:06,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:06,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:59:06,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:59:06,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:59:06,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 626 flow. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:06,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:59:06,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:06,530 INFO L130 PetriNetUnfolder]: 426/780 cut-off events. [2023-08-30 16:59:06,531 INFO L131 PetriNetUnfolder]: For 4896/4896 co-relation queries the response was YES. [2023-08-30 16:59:06,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4333 conditions, 780 events. 426/780 cut-off events. For 4896/4896 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3768 event pairs, 64 based on Foata normal form. 5/785 useless extension candidates. Maximal degree in co-relation 4300. Up to 375 conditions per place. [2023-08-30 16:59:06,537 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 45 selfloop transitions, 25 changer transitions 5/75 dead transitions. [2023-08-30 16:59:06,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 932 flow [2023-08-30 16:59:06,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:59:06,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:59:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2023-08-30 16:59:06,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564748201438849 [2023-08-30 16:59:06,539 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 314 transitions. [2023-08-30 16:59:06,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 314 transitions. [2023-08-30 16:59:06,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:06,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 314 transitions. [2023-08-30 16:59:06,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,542 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,542 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 626 flow. Second operand 4 states and 314 transitions. [2023-08-30 16:59:06,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 932 flow [2023-08-30 16:59:06,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 922 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:59:06,552 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 724 flow [2023-08-30 16:59:06,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=724, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-08-30 16:59:06,553 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 31 predicate places. [2023-08-30 16:59:06,553 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 724 flow [2023-08-30 16:59:06,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:06,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:06,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 16:59:06,554 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:59:06,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:06,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2055244248, now seen corresponding path program 1 times [2023-08-30 16:59:06,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:06,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203084931] [2023-08-30 16:59:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:06,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:06,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:06,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203084931] [2023-08-30 16:59:06,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203084931] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:06,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:06,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:59:06,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589653477] [2023-08-30 16:59:06,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:06,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:59:06,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:59:06,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:59:06,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:59:06,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 724 flow. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:06,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:59:06,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:06,807 INFO L130 PetriNetUnfolder]: 475/895 cut-off events. [2023-08-30 16:59:06,808 INFO L131 PetriNetUnfolder]: For 6778/6778 co-relation queries the response was YES. [2023-08-30 16:59:06,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5006 conditions, 895 events. 475/895 cut-off events. For 6778/6778 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4604 event pairs, 101 based on Foata normal form. 5/900 useless extension candidates. Maximal degree in co-relation 4969. Up to 490 conditions per place. [2023-08-30 16:59:06,815 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 40 selfloop transitions, 23 changer transitions 9/72 dead transitions. [2023-08-30 16:59:06,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 72 transitions, 1028 flow [2023-08-30 16:59:06,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:59:06,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:59:06,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-08-30 16:59:06,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611510791366906 [2023-08-30 16:59:06,818 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-08-30 16:59:06,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-08-30 16:59:06,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:06,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-08-30 16:59:06,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,820 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,820 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 724 flow. Second operand 4 states and 312 transitions. [2023-08-30 16:59:06,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 72 transitions, 1028 flow [2023-08-30 16:59:06,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 72 transitions, 1004 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 16:59:06,833 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 660 flow [2023-08-30 16:59:06,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=660, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2023-08-30 16:59:06,834 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 34 predicate places. [2023-08-30 16:59:06,834 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 660 flow [2023-08-30 16:59:06,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:06,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:06,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 16:59:06,835 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:59:06,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:06,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1606064375, now seen corresponding path program 1 times [2023-08-30 16:59:06,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:06,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837734417] [2023-08-30 16:59:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:06,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:06,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:06,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837734417] [2023-08-30 16:59:06,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837734417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:06,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:06,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:59:06,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336721042] [2023-08-30 16:59:06,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:06,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:59:06,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:06,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:59:06,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:59:06,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 139 [2023-08-30 16:59:06,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 660 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:06,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:06,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 139 [2023-08-30 16:59:06,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:07,050 INFO L130 PetriNetUnfolder]: 155/380 cut-off events. [2023-08-30 16:59:07,050 INFO L131 PetriNetUnfolder]: For 3315/3399 co-relation queries the response was YES. [2023-08-30 16:59:07,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2003 conditions, 380 events. 155/380 cut-off events. For 3315/3399 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2085 event pairs, 21 based on Foata normal form. 98/466 useless extension candidates. Maximal degree in co-relation 1964. Up to 219 conditions per place. [2023-08-30 16:59:07,053 INFO L137 encePairwiseOnDemand]: 134/139 looper letters, 34 selfloop transitions, 7 changer transitions 21/71 dead transitions. [2023-08-30 16:59:07,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 1148 flow [2023-08-30 16:59:07,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:59:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:59:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2023-08-30 16:59:07,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5845323741007195 [2023-08-30 16:59:07,055 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2023-08-30 16:59:07,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2023-08-30 16:59:07,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:07,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2023-08-30 16:59:07,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:07,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:07,058 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:07,058 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 660 flow. Second operand 4 states and 325 transitions. [2023-08-30 16:59:07,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 1148 flow [2023-08-30 16:59:07,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 1051 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 16:59:07,067 INFO L231 Difference]: Finished difference. Result has 62 places, 35 transitions, 505 flow [2023-08-30 16:59:07,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=62, PETRI_TRANSITIONS=35} [2023-08-30 16:59:07,068 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 35 predicate places. [2023-08-30 16:59:07,068 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 35 transitions, 505 flow [2023-08-30 16:59:07,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:07,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:07,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:07,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 16:59:07,069 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:59:07,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:07,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1581674822, now seen corresponding path program 1 times [2023-08-30 16:59:07,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:07,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378211433] [2023-08-30 16:59:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:07,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:59:07,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:07,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378211433] [2023-08-30 16:59:07,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378211433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:07,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:07,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:59:07,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413232606] [2023-08-30 16:59:07,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:07,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:59:07,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:07,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:59:07,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:59:07,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 139 [2023-08-30 16:59:07,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 35 transitions, 505 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:07,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:07,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 139 [2023-08-30 16:59:07,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:07,253 INFO L130 PetriNetUnfolder]: 54/140 cut-off events. [2023-08-30 16:59:07,253 INFO L131 PetriNetUnfolder]: For 1259/1303 co-relation queries the response was YES. [2023-08-30 16:59:07,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 140 events. 54/140 cut-off events. For 1259/1303 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 510 event pairs, 8 based on Foata normal form. 38/174 useless extension candidates. Maximal degree in co-relation 890. Up to 69 conditions per place. [2023-08-30 16:59:07,254 INFO L137 encePairwiseOnDemand]: 134/139 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2023-08-30 16:59:07,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 49 transitions, 788 flow [2023-08-30 16:59:07,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:59:07,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:59:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 397 transitions. [2023-08-30 16:59:07,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5712230215827339 [2023-08-30 16:59:07,256 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 397 transitions. [2023-08-30 16:59:07,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 397 transitions. [2023-08-30 16:59:07,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:07,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 397 transitions. [2023-08-30 16:59:07,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:07,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:07,259 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:07,259 INFO L175 Difference]: Start difference. First operand has 62 places, 35 transitions, 505 flow. Second operand 5 states and 397 transitions. [2023-08-30 16:59:07,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 49 transitions, 788 flow [2023-08-30 16:59:07,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 598 flow, removed 3 selfloop flow, removed 13 redundant places. [2023-08-30 16:59:07,264 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2023-08-30 16:59:07,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2023-08-30 16:59:07,266 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-08-30 16:59:07,266 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2023-08-30 16:59:07,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:59:07,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 16:59:07,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 16:59:07,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 16:59:07,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 16:59:07,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 16:59:07,273 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:59:07,276 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:59:07,276 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:59:07,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:59:07 BasicIcfg [2023-08-30 16:59:07,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:59:07,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:59:07,281 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:59:07,281 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:59:07,281 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:01" (3/4) ... [2023-08-30 16:59:07,284 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:59:07,289 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 16:59:07,290 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 16:59:07,290 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 16:59:07,295 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 16:59:07,295 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 16:59:07,295 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 16:59:07,295 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:59:07,321 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:59:07,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:59:07,322 INFO L158 Benchmark]: Toolchain (without parser) took 6710.89ms. Allocated memory was 67.1MB in the beginning and 144.7MB in the end (delta: 77.6MB). Free memory was 43.4MB in the beginning and 94.2MB in the end (delta: -50.7MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2023-08-30 16:59:07,322 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory was 29.8MB in the beginning and 29.8MB in the end (delta: 33.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:59:07,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 504.50ms. Allocated memory is still 67.1MB. Free memory was 43.3MB in the beginning and 38.2MB in the end (delta: 5.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 16:59:07,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.85ms. Allocated memory is still 67.1MB. Free memory was 38.2MB in the beginning and 36.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:59:07,323 INFO L158 Benchmark]: Boogie Preprocessor took 34.67ms. Allocated memory is still 67.1MB. Free memory was 36.2MB in the beginning and 34.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:59:07,324 INFO L158 Benchmark]: RCFGBuilder took 483.90ms. Allocated memory is still 67.1MB. Free memory was 34.7MB in the beginning and 38.9MB in the end (delta: -4.2MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2023-08-30 16:59:07,324 INFO L158 Benchmark]: TraceAbstraction took 5577.84ms. Allocated memory was 67.1MB in the beginning and 144.7MB in the end (delta: 77.6MB). Free memory was 38.3MB in the beginning and 97.3MB in the end (delta: -59.0MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2023-08-30 16:59:07,324 INFO L158 Benchmark]: Witness Printer took 41.09ms. Allocated memory is still 144.7MB. Free memory was 97.3MB in the beginning and 94.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 16:59:07,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory was 29.8MB in the beginning and 29.8MB in the end (delta: 33.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 504.50ms. Allocated memory is still 67.1MB. Free memory was 43.3MB in the beginning and 38.2MB in the end (delta: 5.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.85ms. Allocated memory is still 67.1MB. Free memory was 38.2MB in the beginning and 36.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.67ms. Allocated memory is still 67.1MB. Free memory was 36.2MB in the beginning and 34.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 483.90ms. Allocated memory is still 67.1MB. Free memory was 34.7MB in the beginning and 38.9MB in the end (delta: -4.2MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5577.84ms. Allocated memory was 67.1MB in the beginning and 144.7MB in the end (delta: 77.6MB). Free memory was 38.3MB in the beginning and 97.3MB in the end (delta: -59.0MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Witness Printer took 41.09ms. Allocated memory is still 144.7MB. Free memory was 97.3MB in the beginning and 94.2MB 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: 1.8s, 77 PlacesBefore, 27 PlacesAfterwards, 68 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 56 TotalNumberOfCompositions, 2020 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1056, independent: 975, independent conditional: 0, independent unconditional: 975, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 578, independent: 555, independent conditional: 0, independent unconditional: 555, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1056, independent: 420, independent conditional: 0, independent unconditional: 420, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 578, unknown conditional: 0, unknown unconditional: 578] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 41, Positive conditional cache size: 0, Positive unconditional cache size: 41, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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, 106 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: 5.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 252 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 157 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 466 IncrementalHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 52 mSDtfsCounter, 466 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=724occurred in iteration=7, InterpolantAutomatonStates: 39, 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, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2023-08-30 16:59:07,346 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