./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.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/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.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 6d67b26c9d6dbfd265b32dfe97063f0b6065a61c5709b8120357b3eaad40bf46 --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 16:54:21,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:54:21,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:54:21,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:54:21,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:54:21,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:54:21,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:54:21,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:54:21,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:54:21,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:54:21,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:54:21,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:54:21,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:54:21,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:54:21,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:54:21,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:54:21,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:54:21,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:54:21,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:54:21,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:54:21,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:54:21,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:54:21,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:54:21,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:54:21,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:54:21,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:54:21,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:54:21,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:54:21,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:54:21,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:54:21,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:54:21,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:54:21,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:54:21,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:54:21,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:54:21,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:54:21,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:54:21,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:54:21,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:54:21,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:54:21,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:54:21,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:54:21,632 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:54:21,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:54:21,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:54:21,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:54:21,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:54:21,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:54:21,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:54:21,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:54:21,637 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:54:21,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:54:21,638 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:54:21,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:54:21,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:54:21,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:54:21,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:54:21,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:54:21,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:54:21,639 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:54:21,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:54:21,640 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:54:21,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:54:21,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:54:21,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:54:21,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:54:21,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:54:21,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:54:21,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:54:21,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:54:21,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:54:21,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:54:21,642 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:54:21,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:54:21,643 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:54:21,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:54:21,643 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:54:21,644 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d67b26c9d6dbfd265b32dfe97063f0b6065a61c5709b8120357b3eaad40bf46 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:54:21,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:54:22,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:54:22,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:54:22,009 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:54:22,009 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:54:22,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-30 16:54:23,283 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:54:23,572 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:54:23,572 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-30 16:54:23,587 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec675cfb3/1e6cfe216e374066921235b475b97495/FLAG7b7da7994 [2023-08-30 16:54:23,610 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec675cfb3/1e6cfe216e374066921235b475b97495 [2023-08-30 16:54:23,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:54:23,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:54:23,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:54:23,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:54:23,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:54:23,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:54:23" (1/1) ... [2023-08-30 16:54:23,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b2ac58e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:23, skipping insertion in model container [2023-08-30 16:54:23,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:54:23" (1/1) ... [2023-08-30 16:54:23,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:54:23,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:54:23,814 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/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-30 16:54:23,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:54:23,989 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:54:24,010 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/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-30 16:54:24,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:54:24,098 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:54:24,098 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:54:24,105 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:54:24,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:24 WrapperNode [2023-08-30 16:54:24,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:54:24,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:54:24,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:54:24,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:54:24,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:24" (1/1) ... [2023-08-30 16:54:24,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:24" (1/1) ... [2023-08-30 16:54:24,167 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-30 16:54:24,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:54:24,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:54:24,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:54:24,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:54:24,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:24" (1/1) ... [2023-08-30 16:54:24,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:24" (1/1) ... [2023-08-30 16:54:24,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:24" (1/1) ... [2023-08-30 16:54:24,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:24" (1/1) ... [2023-08-30 16:54:24,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:24" (1/1) ... [2023-08-30 16:54:24,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:24" (1/1) ... [2023-08-30 16:54:24,190 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:24" (1/1) ... [2023-08-30 16:54:24,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:24" (1/1) ... [2023-08-30 16:54:24,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:54:24,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:54:24,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:54:24,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:54:24,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:24" (1/1) ... [2023-08-30 16:54:24,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:54:24,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:54:24,232 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 16:54:24,244 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 16:54:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:54:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:54:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:54:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:54:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:54:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 16:54:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 16:54:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 16:54:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 16:54:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 16:54:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 16:54:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:54:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:54:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:54:24,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:54:24,263 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 16:54:24,368 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:54:24,370 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:54:24,568 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:54:24,575 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:54:24,575 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:54:24,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:54:24 BoogieIcfgContainer [2023-08-30 16:54:24,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:54:24,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:54:24,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:54:24,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:54:24,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:54:23" (1/3) ... [2023-08-30 16:54:24,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f250912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:54:24, skipping insertion in model container [2023-08-30 16:54:24,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:54:24" (2/3) ... [2023-08-30 16:54:24,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f250912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:54:24, skipping insertion in model container [2023-08-30 16:54:24,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:54:24" (3/3) ... [2023-08-30 16:54:24,586 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-30 16:54:24,593 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:54:24,603 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:54:24,603 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 16:54:24,603 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:54:24,693 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:54:24,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-08-30 16:54:24,806 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-08-30 16:54:24,806 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:54:24,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 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. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-30 16:54:24,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-08-30 16:54:24,816 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-08-30 16:54:24,823 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:54:24,835 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-30 16:54:24,840 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-30 16:54:24,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-08-30 16:54:24,875 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-08-30 16:54:24,875 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:54:24,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 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. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-30 16:54:24,878 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-30 16:54:26,876 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-08-30 16:54:26,876 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-08-30 16:54:26,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:54:26,891 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;@5a9b7229, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:54:26,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 16:54:26,896 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-30 16:54:26,896 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:54:26,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:26,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:26,898 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 16:54:26,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:26,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1940031658, now seen corresponding path program 1 times [2023-08-30 16:54:26,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:26,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720691730] [2023-08-30 16:54:26,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:26,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:27,435 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 16:54:27,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:27,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720691730] [2023-08-30 16:54:27,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720691730] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:27,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:27,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:54:27,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425647019] [2023-08-30 16:54:27,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:27,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:54:27,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:27,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:54:27,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:54:27,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:54:27,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 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 16:54:27,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:27,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:54:27,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:27,665 INFO L130 PetriNetUnfolder]: 398/674 cut-off events. [2023-08-30 16:54:27,665 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 16:54:27,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 674 events. 398/674 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3179 event pairs, 144 based on Foata normal form. 31/705 useless extension candidates. Maximal degree in co-relation 1362. Up to 414 conditions per place. [2023-08-30 16:54:27,674 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-08-30 16:54:27,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 133 flow [2023-08-30 16:54:27,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:54:27,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:54:27,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-08-30 16:54:27,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2023-08-30 16:54:27,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-08-30 16:54:27,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-08-30 16:54:27,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:27,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-08-30 16:54:27,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 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 16:54:27,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:27,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:27,706 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 240 transitions. [2023-08-30 16:54:27,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 133 flow [2023-08-30 16:54:27,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 16:54:27,710 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-08-30 16:54:27,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-30 16:54:27,714 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-30 16:54:27,714 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-08-30 16:54:27,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 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 16:54:27,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:27,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:27,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:54:27,715 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 16:54:27,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:27,716 INFO L85 PathProgramCache]: Analyzing trace with hash 11438640, now seen corresponding path program 1 times [2023-08-30 16:54:27,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:27,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570430159] [2023-08-30 16:54:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:27,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:27,973 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 16:54:27,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:27,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570430159] [2023-08-30 16:54:27,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570430159] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:27,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:27,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:54:27,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796928816] [2023-08-30 16:54:27,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:27,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:54:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:54:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:54:28,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:54:28,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:28,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:28,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:54:28,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:28,096 INFO L130 PetriNetUnfolder]: 372/631 cut-off events. [2023-08-30 16:54:28,097 INFO L131 PetriNetUnfolder]: For 230/230 co-relation queries the response was YES. [2023-08-30 16:54:28,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 631 events. 372/631 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2954 event pairs, 53 based on Foata normal form. 10/640 useless extension candidates. Maximal degree in co-relation 1719. Up to 321 conditions per place. [2023-08-30 16:54:28,101 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 31 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-08-30 16:54:28,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 39 transitions, 218 flow [2023-08-30 16:54:28,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:54:28,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:54:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-08-30 16:54:28,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2023-08-30 16:54:28,103 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-08-30 16:54:28,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-08-30 16:54:28,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:28,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-08-30 16:54:28,105 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 16:54:28,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:28,107 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:28,107 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 315 transitions. [2023-08-30 16:54:28,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 39 transitions, 218 flow [2023-08-30 16:54:28,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:54:28,110 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 122 flow [2023-08-30 16:54:28,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-30 16:54:28,111 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-30 16:54:28,112 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 122 flow [2023-08-30 16:54:28,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:28,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:28,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:28,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:54:28,113 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 16:54:28,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:28,113 INFO L85 PathProgramCache]: Analyzing trace with hash 11438609, now seen corresponding path program 1 times [2023-08-30 16:54:28,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:28,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529888294] [2023-08-30 16:54:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:28,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:28,275 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 16:54:28,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:28,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529888294] [2023-08-30 16:54:28,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529888294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:28,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:28,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:54:28,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300911668] [2023-08-30 16:54:28,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:28,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:54:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:28,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:54:28,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:54:28,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-08-30 16:54:28,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 122 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 16:54:28,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:28,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-08-30 16:54:28,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:28,468 INFO L130 PetriNetUnfolder]: 587/945 cut-off events. [2023-08-30 16:54:28,469 INFO L131 PetriNetUnfolder]: For 1018/1018 co-relation queries the response was YES. [2023-08-30 16:54:28,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2879 conditions, 945 events. 587/945 cut-off events. For 1018/1018 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4220 event pairs, 59 based on Foata normal form. 16/961 useless extension candidates. Maximal degree in co-relation 2864. Up to 307 conditions per place. [2023-08-30 16:54:28,477 INFO L137 encePairwiseOnDemand]: 133/141 looper letters, 44 selfloop transitions, 20 changer transitions 0/64 dead transitions. [2023-08-30 16:54:28,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 64 transitions, 416 flow [2023-08-30 16:54:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:54:28,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:54:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-08-30 16:54:28,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5588652482269504 [2023-08-30 16:54:28,480 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-08-30 16:54:28,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-08-30 16:54:28,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:28,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-08-30 16:54:28,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 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 16:54:28,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:28,485 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:28,485 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 122 flow. Second operand 5 states and 394 transitions. [2023-08-30 16:54:28,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 64 transitions, 416 flow [2023-08-30 16:54:28,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 64 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:54:28,491 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 301 flow [2023-08-30 16:54:28,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=301, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-08-30 16:54:28,493 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-08-30 16:54:28,495 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 301 flow [2023-08-30 16:54:28,496 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 16:54:28,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:28,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:28,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:54:28,496 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 16:54:28,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:28,497 INFO L85 PathProgramCache]: Analyzing trace with hash 380918055, now seen corresponding path program 1 times [2023-08-30 16:54:28,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:28,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151360392] [2023-08-30 16:54:28,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:28,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:28,689 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 16:54:28,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:28,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151360392] [2023-08-30 16:54:28,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151360392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:28,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:28,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:54:28,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897985868] [2023-08-30 16:54:28,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:28,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:54:28,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:28,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:54:28,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:54:28,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:54:28,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 301 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 16:54:28,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:28,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:54:28,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:28,835 INFO L130 PetriNetUnfolder]: 488/816 cut-off events. [2023-08-30 16:54:28,835 INFO L131 PetriNetUnfolder]: For 2180/2204 co-relation queries the response was YES. [2023-08-30 16:54:28,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 816 events. 488/816 cut-off events. For 2180/2204 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3796 event pairs, 94 based on Foata normal form. 21/835 useless extension candidates. Maximal degree in co-relation 3158. Up to 353 conditions per place. [2023-08-30 16:54:28,842 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 39 selfloop transitions, 20 changer transitions 0/61 dead transitions. [2023-08-30 16:54:28,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 61 transitions, 579 flow [2023-08-30 16:54:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:54:28,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:54:28,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-08-30 16:54:28,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2023-08-30 16:54:28,844 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-08-30 16:54:28,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-08-30 16:54:28,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:28,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-08-30 16:54:28,845 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 16:54:28,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:28,847 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:28,847 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 301 flow. Second operand 4 states and 315 transitions. [2023-08-30 16:54:28,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 61 transitions, 579 flow [2023-08-30 16:54:28,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 61 transitions, 579 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:54:28,854 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 495 flow [2023-08-30 16:54:28,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=495, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2023-08-30 16:54:28,855 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2023-08-30 16:54:28,855 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 495 flow [2023-08-30 16:54:28,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 16:54:28,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:28,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:28,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:54:28,856 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 16:54:28,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:28,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1503708307, now seen corresponding path program 1 times [2023-08-30 16:54:28,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:28,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749756978] [2023-08-30 16:54:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:28,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:28,996 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 16:54:28,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:28,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749756978] [2023-08-30 16:54:28,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749756978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:28,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:28,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:54:28,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957313835] [2023-08-30 16:54:28,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:28,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:54:28,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:28,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:54:28,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:54:29,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:54:29,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 495 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 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 16:54:29,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:29,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:54:29,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:29,149 INFO L130 PetriNetUnfolder]: 481/819 cut-off events. [2023-08-30 16:54:29,149 INFO L131 PetriNetUnfolder]: For 3827/3852 co-relation queries the response was YES. [2023-08-30 16:54:29,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3474 conditions, 819 events. 481/819 cut-off events. For 3827/3852 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3950 event pairs, 71 based on Foata normal form. 35/854 useless extension candidates. Maximal degree in co-relation 3449. Up to 375 conditions per place. [2023-08-30 16:54:29,156 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 34 selfloop transitions, 23 changer transitions 1/60 dead transitions. [2023-08-30 16:54:29,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 645 flow [2023-08-30 16:54:29,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:54:29,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:54:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2023-08-30 16:54:29,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5620567375886525 [2023-08-30 16:54:29,158 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 317 transitions. [2023-08-30 16:54:29,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 317 transitions. [2023-08-30 16:54:29,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:29,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 317 transitions. [2023-08-30 16:54:29,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:29,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:29,160 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:29,160 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 495 flow. Second operand 4 states and 317 transitions. [2023-08-30 16:54:29,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 645 flow [2023-08-30 16:54:29,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 645 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:54:29,175 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 536 flow [2023-08-30 16:54:29,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=536, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-08-30 16:54:29,178 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-08-30 16:54:29,178 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 536 flow [2023-08-30 16:54:29,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 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 16:54:29,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:29,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:29,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:54:29,179 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 16:54:29,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:29,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1893045975, now seen corresponding path program 1 times [2023-08-30 16:54:29,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:29,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532745229] [2023-08-30 16:54:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:29,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:29,322 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 16:54:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532745229] [2023-08-30 16:54:29,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532745229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:29,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:29,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:54:29,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106427030] [2023-08-30 16:54:29,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:29,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:54:29,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:54:29,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:54:29,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-08-30 16:54:29,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 536 flow. Second operand has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 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 16:54:29,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:29,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-08-30 16:54:29,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:29,495 INFO L130 PetriNetUnfolder]: 610/1019 cut-off events. [2023-08-30 16:54:29,495 INFO L131 PetriNetUnfolder]: For 6109/6109 co-relation queries the response was YES. [2023-08-30 16:54:29,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 1019 events. 610/1019 cut-off events. For 6109/6109 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4898 event pairs, 130 based on Foata normal form. 24/1043 useless extension candidates. Maximal degree in co-relation 4336. Up to 452 conditions per place. [2023-08-30 16:54:29,501 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 39 selfloop transitions, 10 changer transitions 30/79 dead transitions. [2023-08-30 16:54:29,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 931 flow [2023-08-30 16:54:29,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:54:29,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:54:29,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2023-08-30 16:54:29,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550354609929078 [2023-08-30 16:54:29,503 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 388 transitions. [2023-08-30 16:54:29,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 388 transitions. [2023-08-30 16:54:29,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:29,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 388 transitions. [2023-08-30 16:54:29,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 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 16:54:29,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:29,506 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:29,507 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 536 flow. Second operand 5 states and 388 transitions. [2023-08-30 16:54:29,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 931 flow [2023-08-30 16:54:29,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 908 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 16:54:29,533 INFO L231 Difference]: Finished difference. Result has 54 places, 29 transitions, 308 flow [2023-08-30 16:54:29,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=54, PETRI_TRANSITIONS=29} [2023-08-30 16:54:29,538 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 27 predicate places. [2023-08-30 16:54:29,538 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 29 transitions, 308 flow [2023-08-30 16:54:29,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 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 16:54:29,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:29,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:29,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:54:29,539 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 16:54:29,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:29,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1849809243, now seen corresponding path program 1 times [2023-08-30 16:54:29,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:29,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786796400] [2023-08-30 16:54:29,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:29,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:29,712 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 16:54:29,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:29,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786796400] [2023-08-30 16:54:29,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786796400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:29,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:29,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:54:29,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158533469] [2023-08-30 16:54:29,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:29,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:54:29,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:29,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:54:29,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:54:29,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:54:29,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 29 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 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 16:54:29,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:29,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:54:29,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:29,818 INFO L130 PetriNetUnfolder]: 230/408 cut-off events. [2023-08-30 16:54:29,818 INFO L131 PetriNetUnfolder]: For 2082/2082 co-relation queries the response was YES. [2023-08-30 16:54:29,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1778 conditions, 408 events. 230/408 cut-off events. For 2082/2082 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1556 event pairs, 58 based on Foata normal form. 12/419 useless extension candidates. Maximal degree in co-relation 1747. Up to 212 conditions per place. [2023-08-30 16:54:29,821 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 17 selfloop transitions, 4 changer transitions 22/44 dead transitions. [2023-08-30 16:54:29,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 44 transitions, 464 flow [2023-08-30 16:54:29,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:54:29,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:54:29,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2023-08-30 16:54:29,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2023-08-30 16:54:29,823 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 385 transitions. [2023-08-30 16:54:29,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 385 transitions. [2023-08-30 16:54:29,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:29,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 385 transitions. [2023-08-30 16:54:29,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 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 16:54:29,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:29,827 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:29,827 INFO L175 Difference]: Start difference. First operand has 54 places, 29 transitions, 308 flow. Second operand 5 states and 385 transitions. [2023-08-30 16:54:29,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 44 transitions, 464 flow [2023-08-30 16:54:29,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 344 flow, removed 15 selfloop flow, removed 13 redundant places. [2023-08-30 16:54:29,835 INFO L231 Difference]: Finished difference. Result has 46 places, 17 transitions, 100 flow [2023-08-30 16:54:29,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=17} [2023-08-30 16:54:29,836 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-08-30 16:54:29,836 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 17 transitions, 100 flow [2023-08-30 16:54:29,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 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 16:54:29,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:54:29,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:29,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 16:54:29,837 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 16:54:29,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:54:29,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1817634963, now seen corresponding path program 2 times [2023-08-30 16:54:29,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:54:29,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959200754] [2023-08-30 16:54:29,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:54:29,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:54:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:54:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:54:29,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:54:29,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959200754] [2023-08-30 16:54:29,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959200754] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:54:29,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:54:29,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:54:29,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774257182] [2023-08-30 16:54:29,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:54:29,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:54:29,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:54:29,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:54:29,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:54:29,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:54:29,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 17 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 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 16:54:29,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:54:29,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:54:29,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:54:30,029 INFO L130 PetriNetUnfolder]: 47/96 cut-off events. [2023-08-30 16:54:30,029 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-08-30 16:54:30,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 96 events. 47/96 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 207 event pairs, 29 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 292. Up to 82 conditions per place. [2023-08-30 16:54:30,030 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-08-30 16:54:30,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 17 transitions, 124 flow [2023-08-30 16:54:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:54:30,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:54:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-08-30 16:54:30,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2023-08-30 16:54:30,032 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-08-30 16:54:30,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-08-30 16:54:30,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:54:30,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-08-30 16:54:30,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 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 16:54:30,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:30,034 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:54:30,035 INFO L175 Difference]: Start difference. First operand has 46 places, 17 transitions, 100 flow. Second operand 4 states and 297 transitions. [2023-08-30 16:54:30,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 17 transitions, 124 flow [2023-08-30 16:54:30,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 17 transitions, 76 flow, removed 3 selfloop flow, removed 18 redundant places. [2023-08-30 16:54:30,036 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-30 16:54:30,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-30 16:54:30,037 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-08-30 16:54:30,037 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-30 16:54:30,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 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 16:54:30,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 16:54:30,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 16:54:30,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 16:54:30,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 16:54:30,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 16:54:30,041 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-08-30 16:54:30,043 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:54:30,044 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:54:30,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:54:30 BasicIcfg [2023-08-30 16:54:30,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:54:30,047 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:54:30,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:54:30,048 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:54:30,048 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:54:24" (3/4) ... [2023-08-30 16:54:30,050 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:54:30,055 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 16:54:30,056 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 16:54:30,056 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 16:54:30,059 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 16:54:30,060 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 16:54:30,060 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 16:54:30,060 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:54:30,086 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:54:30,086 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:54:30,087 INFO L158 Benchmark]: Toolchain (without parser) took 6473.02ms. Allocated memory was 71.3MB in the beginning and 140.5MB in the end (delta: 69.2MB). Free memory was 47.0MB in the beginning and 73.2MB in the end (delta: -26.2MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. [2023-08-30 16:54:30,087 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 52.4MB. Free memory was 31.0MB in the beginning and 30.9MB in the end (delta: 52.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:54:30,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.46ms. Allocated memory is still 71.3MB. Free memory was 46.8MB in the beginning and 43.7MB in the end (delta: 3.2MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2023-08-30 16:54:30,088 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.62ms. Allocated memory is still 71.3MB. Free memory was 43.7MB in the beginning and 41.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:54:30,088 INFO L158 Benchmark]: Boogie Preprocessor took 25.35ms. Allocated memory is still 71.3MB. Free memory was 41.6MB in the beginning and 40.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:54:30,088 INFO L158 Benchmark]: RCFGBuilder took 383.30ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 40.1MB in the beginning and 59.0MB in the end (delta: -18.9MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2023-08-30 16:54:30,089 INFO L158 Benchmark]: TraceAbstraction took 5467.19ms. Allocated memory was 86.0MB in the beginning and 140.5MB in the end (delta: 54.5MB). Free memory was 58.6MB in the beginning and 76.3MB in the end (delta: -17.7MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. [2023-08-30 16:54:30,089 INFO L158 Benchmark]: Witness Printer took 39.04ms. Allocated memory is still 140.5MB. Free memory was 76.3MB in the beginning and 73.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 16:54:30,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 52.4MB. Free memory was 31.0MB in the beginning and 30.9MB in the end (delta: 52.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 489.46ms. Allocated memory is still 71.3MB. Free memory was 46.8MB in the beginning and 43.7MB in the end (delta: 3.2MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.62ms. Allocated memory is still 71.3MB. Free memory was 43.7MB in the beginning and 41.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.35ms. Allocated memory is still 71.3MB. Free memory was 41.6MB in the beginning and 40.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 383.30ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 40.1MB in the beginning and 59.0MB in the end (delta: -18.9MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5467.19ms. Allocated memory was 86.0MB in the beginning and 140.5MB in the end (delta: 54.5MB). Free memory was 58.6MB in the beginning and 76.3MB in the end (delta: -17.7MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. * Witness Printer took 39.04ms. Allocated memory is still 140.5MB. Free memory was 76.3MB in the beginning and 73.2MB 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: 2.0s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1213, independent: 1136, independent conditional: 0, independent unconditional: 1136, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 575, independent: 550, independent conditional: 0, independent unconditional: 550, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1213, independent: 586, independent conditional: 0, independent unconditional: 586, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 575, unknown conditional: 0, unknown unconditional: 575] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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, 108 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: 5.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 319 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 219 mSDsluCounter, 119 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 393 IncrementalHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 64 mSDtfsCounter, 393 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=536occurred in iteration=5, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 16:54:30,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE