./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c --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/weaver/parallel-ticket-2.wvr.c -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 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 --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 19:53:27,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 19:53:27,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 19:53:27,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 19:53:27,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 19:53:27,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 19:53:27,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 19:53:27,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 19:53:27,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 19:53:27,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 19:53:27,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 19:53:27,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 19:53:27,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 19:53:27,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 19:53:27,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 19:53:27,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 19:53:27,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 19:53:27,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 19:53:27,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 19:53:27,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 19:53:27,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 19:53:27,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 19:53:27,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 19:53:27,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 19:53:27,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 19:53:27,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 19:53:27,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 19:53:27,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 19:53:27,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 19:53:27,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 19:53:27,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 19:53:27,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 19:53:27,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 19:53:27,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 19:53:27,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 19:53:27,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 19:53:27,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 19:53:27,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 19:53:27,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 19:53:27,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 19:53:27,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 19:53:27,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 19:53:27,644 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 19:53:27,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 19:53:27,645 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 19:53:27,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 19:53:27,646 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 19:53:27,646 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 19:53:27,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 19:53:27,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 19:53:27,647 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 19:53:27,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 19:53:27,647 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 19:53:27,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 19:53:27,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 19:53:27,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 19:53:27,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 19:53:27,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 19:53:27,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 19:53:27,648 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 19:53:27,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 19:53:27,649 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 19:53:27,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 19:53:27,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 19:53:27,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 19:53:27,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 19:53:27,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 19:53:27,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 19:53:27,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 19:53:27,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 19:53:27,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 19:53:27,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 19:53:27,650 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 19:53:27,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 19:53:27,651 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 19:53:27,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 19:53:27,651 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 19:53:27,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 19:53:27,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 19:53:27,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 19:53:27,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 19:53:27,966 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 19:53:27,966 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 19:53:27,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c [2023-08-30 19:53:28,959 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 19:53:29,061 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 19:53:29,062 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c [2023-08-30 19:53:29,066 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711cb4e67/0d53d5eac02d4ad7876134d21cc677b0/FLAGab00bc5a8 [2023-08-30 19:53:29,074 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711cb4e67/0d53d5eac02d4ad7876134d21cc677b0 [2023-08-30 19:53:29,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 19:53:29,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 19:53:29,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 19:53:29,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 19:53:29,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 19:53:29,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:53:29" (1/1) ... [2023-08-30 19:53:29,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b003768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:29, skipping insertion in model container [2023-08-30 19:53:29,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:53:29" (1/1) ... [2023-08-30 19:53:29,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 19:53:29,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 19:53:29,191 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c[2652,2665] [2023-08-30 19:53:29,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 19:53:29,199 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 19:53:29,212 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c[2652,2665] [2023-08-30 19:53:29,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 19:53:29,219 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 19:53:29,221 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 19:53:29,226 INFO L208 MainTranslator]: Completed translation [2023-08-30 19:53:29,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:29 WrapperNode [2023-08-30 19:53:29,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 19:53:29,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 19:53:29,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 19:53:29,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 19:53:29,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:29" (1/1) ... [2023-08-30 19:53:29,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:29" (1/1) ... [2023-08-30 19:53:29,270 INFO L138 Inliner]: procedures = 21, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 124 [2023-08-30 19:53:29,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 19:53:29,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 19:53:29,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 19:53:29,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 19:53:29,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:29" (1/1) ... [2023-08-30 19:53:29,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:29" (1/1) ... [2023-08-30 19:53:29,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:29" (1/1) ... [2023-08-30 19:53:29,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:29" (1/1) ... [2023-08-30 19:53:29,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:29" (1/1) ... [2023-08-30 19:53:29,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:29" (1/1) ... [2023-08-30 19:53:29,302 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:29" (1/1) ... [2023-08-30 19:53:29,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:29" (1/1) ... [2023-08-30 19:53:29,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 19:53:29,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 19:53:29,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 19:53:29,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 19:53:29,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:29" (1/1) ... [2023-08-30 19:53:29,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 19:53:29,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:53:29,336 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 19:53:29,354 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 19:53:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 19:53:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 19:53:29,365 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 19:53:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 19:53:29,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 19:53:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 19:53:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 19:53:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 19:53:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 19:53:29,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 19:53:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 19:53:29,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 19:53:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 19:53:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 19:53:29,377 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 19:53:29,440 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 19:53:29,441 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 19:53:29,647 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 19:53:29,683 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 19:53:29,684 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 19:53:29,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:53:29 BoogieIcfgContainer [2023-08-30 19:53:29,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 19:53:29,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 19:53:29,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 19:53:29,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 19:53:29,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:53:29" (1/3) ... [2023-08-30 19:53:29,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7245ff1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:53:29, skipping insertion in model container [2023-08-30 19:53:29,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:29" (2/3) ... [2023-08-30 19:53:29,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7245ff1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:53:29, skipping insertion in model container [2023-08-30 19:53:29,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:53:29" (3/3) ... [2023-08-30 19:53:29,692 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2023-08-30 19:53:29,698 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 19:53:29,705 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 19:53:29,706 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 19:53:29,706 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 19:53:29,746 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 19:53:29,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 95 transitions, 206 flow [2023-08-30 19:53:29,819 INFO L130 PetriNetUnfolder]: 2/93 cut-off events. [2023-08-30 19:53:29,821 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 19:53:29,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 2/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-30 19:53:29,825 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 95 transitions, 206 flow [2023-08-30 19:53:29,827 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 85 transitions, 182 flow [2023-08-30 19:53:29,830 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 19:53:29,836 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 85 transitions, 182 flow [2023-08-30 19:53:29,838 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 85 transitions, 182 flow [2023-08-30 19:53:29,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 182 flow [2023-08-30 19:53:29,856 INFO L130 PetriNetUnfolder]: 2/85 cut-off events. [2023-08-30 19:53:29,856 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 19:53:29,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 2/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-30 19:53:29,857 INFO L119 LiptonReduction]: Number of co-enabled transitions 282 [2023-08-30 19:53:31,972 INFO L134 LiptonReduction]: Checked pairs total: 1334 [2023-08-30 19:53:31,973 INFO L136 LiptonReduction]: Total number of compositions: 74 [2023-08-30 19:53:31,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 19:53:31,994 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;@57cc2fff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 19:53:31,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 19:53:32,021 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2023-08-30 19:53:32,021 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 19:53:32,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:32,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:53:32,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 19:53:32,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:32,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1313733496, now seen corresponding path program 1 times [2023-08-30 19:53:32,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:32,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229027591] [2023-08-30 19:53:32,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:32,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:33,008 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 19:53:33,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:33,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229027591] [2023-08-30 19:53:33,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229027591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:33,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:33,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 19:53:33,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705520798] [2023-08-30 19:53:33,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:33,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 19:53:33,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:33,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 19:53:33,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 19:53:33,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 169 [2023-08-30 19:53:33,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 48 flow. Second operand has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 19:53:33,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:33,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 169 [2023-08-30 19:53:33,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:33,247 INFO L130 PetriNetUnfolder]: 117/235 cut-off events. [2023-08-30 19:53:33,247 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 19:53:33,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 235 events. 117/235 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 796 event pairs, 26 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 424. Up to 102 conditions per place. [2023-08-30 19:53:33,251 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 27 selfloop transitions, 5 changer transitions 18/50 dead transitions. [2023-08-30 19:53:33,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 50 transitions, 224 flow [2023-08-30 19:53:33,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 19:53:33,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 19:53:33,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 603 transitions. [2023-08-30 19:53:33,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460059171597633 [2023-08-30 19:53:33,267 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 603 transitions. [2023-08-30 19:53:33,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 603 transitions. [2023-08-30 19:53:33,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:33,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 603 transitions. [2023-08-30 19:53:33,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.375) internal successors, (603), 8 states have internal predecessors, (603), 0 states have call successors, (0), 0 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 19:53:33,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 169.0) internal successors, (1521), 9 states have internal predecessors, (1521), 0 states have call successors, (0), 0 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 19:53:33,280 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 169.0) internal successors, (1521), 9 states have internal predecessors, (1521), 0 states have call successors, (0), 0 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 19:53:33,281 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 48 flow. Second operand 8 states and 603 transitions. [2023-08-30 19:53:33,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 50 transitions, 224 flow [2023-08-30 19:53:33,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 50 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 19:53:33,284 INFO L231 Difference]: Finished difference. Result has 33 places, 21 transitions, 75 flow [2023-08-30 19:53:33,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2023-08-30 19:53:33,288 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2023-08-30 19:53:33,288 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 75 flow [2023-08-30 19:53:33,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 19:53:33,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:33,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:53:33,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 19:53:33,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 19:53:33,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1890157130, now seen corresponding path program 2 times [2023-08-30 19:53:33,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:33,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40915724] [2023-08-30 19:53:33,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:33,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:33,810 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 19:53:33,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:33,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40915724] [2023-08-30 19:53:33,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40915724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:33,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:33,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 19:53:33,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810724807] [2023-08-30 19:53:33,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:33,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 19:53:33,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:33,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 19:53:33,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 19:53:33,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 169 [2023-08-30 19:53:33,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 75 flow. Second operand has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 19:53:33,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:33,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 169 [2023-08-30 19:53:33,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:33,959 INFO L130 PetriNetUnfolder]: 83/177 cut-off events. [2023-08-30 19:53:33,960 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-30 19:53:33,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 177 events. 83/177 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 556 event pairs, 32 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 440. Up to 107 conditions per place. [2023-08-30 19:53:33,962 INFO L137 encePairwiseOnDemand]: 161/169 looper letters, 26 selfloop transitions, 7 changer transitions 7/40 dead transitions. [2023-08-30 19:53:33,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 205 flow [2023-08-30 19:53:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 19:53:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 19:53:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 454 transitions. [2023-08-30 19:53:33,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4477317554240631 [2023-08-30 19:53:33,969 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 454 transitions. [2023-08-30 19:53:33,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 454 transitions. [2023-08-30 19:53:33,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:33,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 454 transitions. [2023-08-30 19:53:33,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 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 19:53:33,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 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 19:53:33,972 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 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 19:53:33,972 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 75 flow. Second operand 6 states and 454 transitions. [2023-08-30 19:53:33,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 205 flow [2023-08-30 19:53:33,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 196 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 19:53:33,975 INFO L231 Difference]: Finished difference. Result has 35 places, 22 transitions, 99 flow [2023-08-30 19:53:33,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=99, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2023-08-30 19:53:33,976 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2023-08-30 19:53:33,976 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 99 flow [2023-08-30 19:53:33,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 19:53:33,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:33,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:53:33,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 19:53:33,977 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 19:53:33,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:33,977 INFO L85 PathProgramCache]: Analyzing trace with hash -956925302, now seen corresponding path program 3 times [2023-08-30 19:53:33,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:33,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614655408] [2023-08-30 19:53:33,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:33,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:34,145 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 19:53:34,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:34,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614655408] [2023-08-30 19:53:34,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614655408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:34,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:34,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 19:53:34,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735642914] [2023-08-30 19:53:34,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:34,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 19:53:34,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:34,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 19:53:34,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 19:53:34,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 169 [2023-08-30 19:53:34,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 19:53:34,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:34,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 169 [2023-08-30 19:53:34,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:34,225 INFO L130 PetriNetUnfolder]: 27/80 cut-off events. [2023-08-30 19:53:34,225 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-08-30 19:53:34,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 80 events. 27/80 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 192 event pairs, 4 based on Foata normal form. 4/84 useless extension candidates. Maximal degree in co-relation 144. Up to 22 conditions per place. [2023-08-30 19:53:34,226 INFO L137 encePairwiseOnDemand]: 163/169 looper letters, 15 selfloop transitions, 4 changer transitions 9/31 dead transitions. [2023-08-30 19:53:34,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 31 transitions, 174 flow [2023-08-30 19:53:34,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 19:53:34,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 19:53:34,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2023-08-30 19:53:34,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46548323471400394 [2023-08-30 19:53:34,227 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2023-08-30 19:53:34,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2023-08-30 19:53:34,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:34,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2023-08-30 19:53:34,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 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 19:53:34,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 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 19:53:34,230 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 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 19:53:34,230 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 99 flow. Second operand 6 states and 472 transitions. [2023-08-30 19:53:34,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 31 transitions, 174 flow [2023-08-30 19:53:34,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 151 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 19:53:34,232 INFO L231 Difference]: Finished difference. Result has 36 places, 20 transitions, 79 flow [2023-08-30 19:53:34,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=36, PETRI_TRANSITIONS=20} [2023-08-30 19:53:34,232 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-08-30 19:53:34,233 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 20 transitions, 79 flow [2023-08-30 19:53:34,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 19:53:34,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:34,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:53:34,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 19:53:34,233 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 19:53:34,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:34,234 INFO L85 PathProgramCache]: Analyzing trace with hash 733781402, now seen corresponding path program 4 times [2023-08-30 19:53:34,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:34,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777483046] [2023-08-30 19:53:34,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:34,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:53:34,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:34,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777483046] [2023-08-30 19:53:34,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777483046] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:34,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:34,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 19:53:34,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602609584] [2023-08-30 19:53:34,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:34,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 19:53:34,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:34,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 19:53:34,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 19:53:34,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 169 [2023-08-30 19:53:34,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 20 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 19:53:34,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:34,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 169 [2023-08-30 19:53:34,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:34,361 INFO L130 PetriNetUnfolder]: 6/19 cut-off events. [2023-08-30 19:53:34,361 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 19:53:34,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 19 events. 6/19 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 4/23 useless extension candidates. Maximal degree in co-relation 58. Up to 8 conditions per place. [2023-08-30 19:53:34,361 INFO L137 encePairwiseOnDemand]: 165/169 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-30 19:53:34,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 11 transitions, 64 flow [2023-08-30 19:53:34,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 19:53:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 19:53:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2023-08-30 19:53:34,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45207100591715976 [2023-08-30 19:53:34,363 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2023-08-30 19:53:34,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2023-08-30 19:53:34,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:34,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2023-08-30 19:53:34,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 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 19:53:34,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 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 19:53:34,365 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 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 19:53:34,365 INFO L175 Difference]: Start difference. First operand has 36 places, 20 transitions, 79 flow. Second operand 5 states and 382 transitions. [2023-08-30 19:53:34,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 11 transitions, 64 flow [2023-08-30 19:53:34,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 11 transitions, 53 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 19:53:34,366 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2023-08-30 19:53:34,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2023-08-30 19:53:34,367 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -5 predicate places. [2023-08-30 19:53:34,367 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2023-08-30 19:53:34,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 19:53:34,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-30 19:53:34,373 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-30 19:53:34,373 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-30 19:53:34,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 19:53:34,373 INFO L445 BasicCegarLoop]: Path program histogram: [4] [2023-08-30 19:53:34,376 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 19:53:34,376 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 19:53:34,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:53:34 BasicIcfg [2023-08-30 19:53:34,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 19:53:34,383 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 19:53:34,383 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 19:53:34,383 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 19:53:34,383 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:53:29" (3/4) ... [2023-08-30 19:53:34,387 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 19:53:34,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 19:53:34,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 19:53:34,396 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 19:53:34,396 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 19:53:34,396 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 19:53:34,396 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 19:53:34,429 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 19:53:34,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 19:53:34,430 INFO L158 Benchmark]: Toolchain (without parser) took 5353.39ms. Allocated memory was 65.0MB in the beginning and 144.7MB in the end (delta: 79.7MB). Free memory was 29.6MB in the beginning and 98.1MB in the end (delta: -68.5MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2023-08-30 19:53:34,430 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 65.0MB. Free memory was 42.2MB in the beginning and 42.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 19:53:34,430 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.51ms. Allocated memory is still 65.0MB. Free memory was 29.4MB in the beginning and 36.2MB in the end (delta: -6.8MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2023-08-30 19:53:34,430 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.91ms. Allocated memory is still 65.0MB. Free memory was 36.2MB in the beginning and 34.4MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 19:53:34,431 INFO L158 Benchmark]: Boogie Preprocessor took 38.05ms. Allocated memory is still 65.0MB. Free memory was 34.4MB in the beginning and 33.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 19:53:34,431 INFO L158 Benchmark]: RCFGBuilder took 375.65ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 33.0MB in the beginning and 48.7MB in the end (delta: -15.6MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2023-08-30 19:53:34,431 INFO L158 Benchmark]: TraceAbstraction took 4695.22ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 48.0MB in the beginning and 101.3MB in the end (delta: -53.2MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2023-08-30 19:53:34,431 INFO L158 Benchmark]: Witness Printer took 46.63ms. Allocated memory is still 144.7MB. Free memory was 101.3MB in the beginning and 98.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 19:53:34,433 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 65.0MB. Free memory was 42.2MB in the beginning and 42.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.51ms. Allocated memory is still 65.0MB. Free memory was 29.4MB in the beginning and 36.2MB in the end (delta: -6.8MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.91ms. Allocated memory is still 65.0MB. Free memory was 36.2MB in the beginning and 34.4MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.05ms. Allocated memory is still 65.0MB. Free memory was 34.4MB in the beginning and 33.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 375.65ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 33.0MB in the beginning and 48.7MB in the end (delta: -15.6MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4695.22ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 48.0MB in the beginning and 101.3MB in the end (delta: -53.2MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Witness Printer took 46.63ms. Allocated memory is still 144.7MB. Free memory was 101.3MB in the beginning and 98.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 90 PlacesBefore, 25 PlacesAfterwards, 85 TransitionsBefore, 18 TransitionsAfterwards, 282 CoEnabledTransitionPairs, 7 FixpointIterations, 55 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 1334 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 772, independent: 648, independent conditional: 0, independent unconditional: 648, dependent: 124, dependent conditional: 0, dependent unconditional: 124, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 144, independent: 136, independent conditional: 0, independent unconditional: 136, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 772, independent: 512, independent conditional: 0, independent unconditional: 512, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 144, unknown conditional: 0, unknown unconditional: 144] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 102]: 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 5 procedures, 111 locations, 3 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: 4.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 155 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 119 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 441 IncrementalHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 23 mSDtfsCounter, 441 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=2, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 655 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 19:53:34,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE