./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy6.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/test-easy6.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 e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e --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 21:49:22,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 21:49:22,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 21:49:22,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 21:49:22,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 21:49:22,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 21:49:22,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 21:49:22,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 21:49:22,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 21:49:22,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 21:49:22,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 21:49:22,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 21:49:22,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 21:49:22,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 21:49:22,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 21:49:22,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 21:49:22,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 21:49:22,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 21:49:22,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 21:49:22,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 21:49:22,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 21:49:22,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 21:49:22,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 21:49:22,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 21:49:22,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 21:49:22,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 21:49:22,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 21:49:22,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 21:49:22,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 21:49:22,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 21:49:22,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 21:49:22,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 21:49:22,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 21:49:22,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 21:49:22,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 21:49:22,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 21:49:22,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 21:49:22,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 21:49:22,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 21:49:22,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 21:49:22,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 21:49:22,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 21:49:22,653 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 21:49:22,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 21:49:22,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 21:49:22,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 21:49:22,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 21:49:22,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 21:49:22,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 21:49:22,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 21:49:22,655 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 21:49:22,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 21:49:22,656 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 21:49:22,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 21:49:22,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 21:49:22,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 21:49:22,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 21:49:22,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 21:49:22,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 21:49:22,656 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 21:49:22,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 21:49:22,657 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 21:49:22,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 21:49:22,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 21:49:22,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 21:49:22,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 21:49:22,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 21:49:22,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 21:49:22,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 21:49:22,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 21:49:22,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 21:49:22,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 21:49:22,658 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 21:49:22,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 21:49:22,658 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 21:49:22,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 21:49:22,658 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 21:49:22,658 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 21:49:22,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 21:49:22,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 21:49:22,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 21:49:22,995 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 21:49:22,995 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 21:49:22,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-08-30 21:49:24,192 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 21:49:24,383 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 21:49:24,384 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-08-30 21:49:24,392 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e9b97115/5602362fc2f142cf985c2ef19c809c9d/FLAGdbd42982a [2023-08-30 21:49:24,406 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e9b97115/5602362fc2f142cf985c2ef19c809c9d [2023-08-30 21:49:24,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 21:49:24,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 21:49:24,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 21:49:24,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 21:49:24,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 21:49:24,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:49:24" (1/1) ... [2023-08-30 21:49:24,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd43bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:24, skipping insertion in model container [2023-08-30 21:49:24,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:49:24" (1/1) ... [2023-08-30 21:49:24,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 21:49:24,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 21:49:24,622 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/test-easy6.wvr.c[3046,3059] [2023-08-30 21:49:24,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 21:49:24,641 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 21:49:24,676 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/test-easy6.wvr.c[3046,3059] [2023-08-30 21:49:24,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 21:49:24,688 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 21:49:24,690 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 21:49:24,695 INFO L208 MainTranslator]: Completed translation [2023-08-30 21:49:24,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:24 WrapperNode [2023-08-30 21:49:24,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 21:49:24,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 21:49:24,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 21:49:24,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 21:49:24,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:24" (1/1) ... [2023-08-30 21:49:24,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:24" (1/1) ... [2023-08-30 21:49:24,739 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 123 [2023-08-30 21:49:24,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 21:49:24,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 21:49:24,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 21:49:24,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 21:49:24,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:24" (1/1) ... [2023-08-30 21:49:24,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:24" (1/1) ... [2023-08-30 21:49:24,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:24" (1/1) ... [2023-08-30 21:49:24,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:24" (1/1) ... [2023-08-30 21:49:24,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:24" (1/1) ... [2023-08-30 21:49:24,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:24" (1/1) ... [2023-08-30 21:49:24,780 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:24" (1/1) ... [2023-08-30 21:49:24,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:24" (1/1) ... [2023-08-30 21:49:24,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 21:49:24,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 21:49:24,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 21:49:24,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 21:49:24,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:24" (1/1) ... [2023-08-30 21:49:24,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 21:49:24,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:49:24,818 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 21:49:24,841 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 21:49:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 21:49:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 21:49:24,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 21:49:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 21:49:24,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 21:49:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 21:49:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 21:49:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 21:49:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 21:49:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 21:49:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 21:49:24,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 21:49:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 21:49:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 21:49:24,860 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 21:49:24,970 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 21:49:24,972 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 21:49:25,152 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 21:49:25,234 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 21:49:25,235 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 21:49:25,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:49:25 BoogieIcfgContainer [2023-08-30 21:49:25,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 21:49:25,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 21:49:25,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 21:49:25,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 21:49:25,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:49:24" (1/3) ... [2023-08-30 21:49:25,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160192b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:49:25, skipping insertion in model container [2023-08-30 21:49:25,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:49:24" (2/3) ... [2023-08-30 21:49:25,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160192b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:49:25, skipping insertion in model container [2023-08-30 21:49:25,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:49:25" (3/3) ... [2023-08-30 21:49:25,245 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2023-08-30 21:49:25,254 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 21:49:25,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 21:49:25,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 21:49:25,261 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 21:49:25,348 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 21:49:25,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 172 flow [2023-08-30 21:49:25,441 INFO L130 PetriNetUnfolder]: 1/76 cut-off events. [2023-08-30 21:49:25,442 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 21:49:25,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 1/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2023-08-30 21:49:25,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 78 transitions, 172 flow [2023-08-30 21:49:25,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 68 transitions, 148 flow [2023-08-30 21:49:25,452 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 21:49:25,469 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 68 transitions, 148 flow [2023-08-30 21:49:25,472 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 68 transitions, 148 flow [2023-08-30 21:49:25,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 68 transitions, 148 flow [2023-08-30 21:49:25,505 INFO L130 PetriNetUnfolder]: 1/68 cut-off events. [2023-08-30 21:49:25,528 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 21:49:25,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 68 events. 1/68 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2023-08-30 21:49:25,530 INFO L119 LiptonReduction]: Number of co-enabled transitions 572 [2023-08-30 21:49:27,116 INFO L134 LiptonReduction]: Checked pairs total: 3197 [2023-08-30 21:49:27,117 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-30 21:49:27,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 21:49:27,134 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;@710d5d84, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 21:49:27,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 21:49:27,141 INFO L130 PetriNetUnfolder]: 0/26 cut-off events. [2023-08-30 21:49:27,141 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 21:49:27,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:49:27,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:49:27,143 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 21:49:27,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:49:27,147 INFO L85 PathProgramCache]: Analyzing trace with hash -758679208, now seen corresponding path program 1 times [2023-08-30 21:49:27,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:49:27,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677472935] [2023-08-30 21:49:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:49:27,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:49:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:49:27,729 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 21:49:27,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:49:27,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677472935] [2023-08-30 21:49:27,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677472935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:49:27,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:49:27,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 21:49:27,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134363061] [2023-08-30 21:49:27,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:49:27,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 21:49:27,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:49:27,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 21:49:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 21:49:27,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 124 [2023-08-30 21:49:27,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 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 21:49:27,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:49:27,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 124 [2023-08-30 21:49:27,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:49:28,042 INFO L130 PetriNetUnfolder]: 133/295 cut-off events. [2023-08-30 21:49:28,043 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-08-30 21:49:28,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 295 events. 133/295 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1169 event pairs, 39 based on Foata normal form. 1/286 useless extension candidates. Maximal degree in co-relation 484. Up to 80 conditions per place. [2023-08-30 21:49:28,047 INFO L137 encePairwiseOnDemand]: 118/124 looper letters, 34 selfloop transitions, 6 changer transitions 16/64 dead transitions. [2023-08-30 21:49:28,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 64 transitions, 276 flow [2023-08-30 21:49:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 21:49:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 21:49:28,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 484 transitions. [2023-08-30 21:49:28,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576036866359447 [2023-08-30 21:49:28,062 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 484 transitions. [2023-08-30 21:49:28,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 484 transitions. [2023-08-30 21:49:28,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:49:28,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 484 transitions. [2023-08-30 21:49:28,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 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 21:49:28,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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 21:49:28,075 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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 21:49:28,076 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 66 flow. Second operand 7 states and 484 transitions. [2023-08-30 21:49:28,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 64 transitions, 276 flow [2023-08-30 21:49:28,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 64 transitions, 252 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 21:49:28,081 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 93 flow [2023-08-30 21:49:28,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=93, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2023-08-30 21:49:28,086 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-08-30 21:49:28,086 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 93 flow [2023-08-30 21:49:28,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 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 21:49:28,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:49:28,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:49:28,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 21:49:28,088 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 21:49:28,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:49:28,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1645700888, now seen corresponding path program 2 times [2023-08-30 21:49:28,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:49:28,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480288076] [2023-08-30 21:49:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:49:28,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:49:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:49:28,254 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 21:49:28,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:49:28,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480288076] [2023-08-30 21:49:28,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480288076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:49:28,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:49:28,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 21:49:28,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508806955] [2023-08-30 21:49:28,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:49:28,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 21:49:28,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:49:28,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 21:49:28,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 21:49:28,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 124 [2023-08-30 21:49:28,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 93 flow. Second operand has 7 states, 7 states have (on average 60.714285714285715) internal successors, (425), 7 states have internal predecessors, (425), 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 21:49:28,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:49:28,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 124 [2023-08-30 21:49:28,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:49:28,481 INFO L130 PetriNetUnfolder]: 204/536 cut-off events. [2023-08-30 21:49:28,481 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-08-30 21:49:28,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1069 conditions, 536 events. 204/536 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2912 event pairs, 22 based on Foata normal form. 6/534 useless extension candidates. Maximal degree in co-relation 1045. Up to 91 conditions per place. [2023-08-30 21:49:28,485 INFO L137 encePairwiseOnDemand]: 116/124 looper letters, 41 selfloop transitions, 11 changer transitions 13/77 dead transitions. [2023-08-30 21:49:28,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 77 transitions, 322 flow [2023-08-30 21:49:28,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 21:49:28,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 21:49:28,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 588 transitions. [2023-08-30 21:49:28,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2023-08-30 21:49:28,488 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 588 transitions. [2023-08-30 21:49:28,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 588 transitions. [2023-08-30 21:49:28,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:49:28,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 588 transitions. [2023-08-30 21:49:28,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 65.33333333333333) internal successors, (588), 9 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:49:28,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 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 21:49:28,494 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 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 21:49:28,494 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 93 flow. Second operand 9 states and 588 transitions. [2023-08-30 21:49:28,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 77 transitions, 322 flow [2023-08-30 21:49:28,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 77 transitions, 318 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 21:49:28,497 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 165 flow [2023-08-30 21:49:28,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=165, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-08-30 21:49:28,498 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-08-30 21:49:28,498 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 165 flow [2023-08-30 21:49:28,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.714285714285715) internal successors, (425), 7 states have internal predecessors, (425), 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 21:49:28,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:49:28,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:49:28,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 21:49:28,499 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 21:49:28,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:49:28,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2063383944, now seen corresponding path program 3 times [2023-08-30 21:49:28,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:49:28,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700141691] [2023-08-30 21:49:28,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:49:28,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:49:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:49:28,613 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 21:49:28,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:49:28,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700141691] [2023-08-30 21:49:28,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700141691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:49:28,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:49:28,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 21:49:28,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422809681] [2023-08-30 21:49:28,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:49:28,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 21:49:28,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:49:28,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 21:49:28,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 21:49:28,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 124 [2023-08-30 21:49:28,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:49:28,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:49:28,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 124 [2023-08-30 21:49:28,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:49:28,685 INFO L130 PetriNetUnfolder]: 149/455 cut-off events. [2023-08-30 21:49:28,685 INFO L131 PetriNetUnfolder]: For 449/469 co-relation queries the response was YES. [2023-08-30 21:49:28,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 455 events. 149/455 cut-off events. For 449/469 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2525 event pairs, 102 based on Foata normal form. 11/446 useless extension candidates. Maximal degree in co-relation 945. Up to 302 conditions per place. [2023-08-30 21:49:28,690 INFO L137 encePairwiseOnDemand]: 121/124 looper letters, 25 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-30 21:49:28,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 240 flow [2023-08-30 21:49:28,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 21:49:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 21:49:28,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-08-30 21:49:28,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5860215053763441 [2023-08-30 21:49:28,692 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-08-30 21:49:28,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-08-30 21:49:28,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:49:28,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-08-30 21:49:28,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 21:49:28,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 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 21:49:28,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 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 21:49:28,694 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 165 flow. Second operand 3 states and 218 transitions. [2023-08-30 21:49:28,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 240 flow [2023-08-30 21:49:28,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 238 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 21:49:28,701 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 171 flow [2023-08-30 21:49:28,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-08-30 21:49:28,702 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-08-30 21:49:28,704 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 171 flow [2023-08-30 21:49:28,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:49:28,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:49:28,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:49:28,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 21:49:28,705 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 21:49:28,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:49:28,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1495984370, now seen corresponding path program 4 times [2023-08-30 21:49:28,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:49:28,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378551011] [2023-08-30 21:49:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:49:28,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:49:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:49:28,906 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 21:49:28,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:49:28,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378551011] [2023-08-30 21:49:28,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378551011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:49:28,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:49:28,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 21:49:28,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607023058] [2023-08-30 21:49:28,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:49:28,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 21:49:28,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:49:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 21:49:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 21:49:28,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 124 [2023-08-30 21:49:28,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 171 flow. Second operand has 7 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 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 21:49:28,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:49:28,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 124 [2023-08-30 21:49:28,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:49:29,089 INFO L130 PetriNetUnfolder]: 237/529 cut-off events. [2023-08-30 21:49:29,090 INFO L131 PetriNetUnfolder]: For 341/345 co-relation queries the response was YES. [2023-08-30 21:49:29,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1491 conditions, 529 events. 237/529 cut-off events. For 341/345 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2536 event pairs, 85 based on Foata normal form. 4/516 useless extension candidates. Maximal degree in co-relation 673. Up to 159 conditions per place. [2023-08-30 21:49:29,093 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 32 selfloop transitions, 5 changer transitions 21/70 dead transitions. [2023-08-30 21:49:29,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 412 flow [2023-08-30 21:49:29,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 21:49:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 21:49:29,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 473 transitions. [2023-08-30 21:49:29,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5449308755760369 [2023-08-30 21:49:29,096 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 473 transitions. [2023-08-30 21:49:29,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 473 transitions. [2023-08-30 21:49:29,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:49:29,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 473 transitions. [2023-08-30 21:49:29,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.57142857142857) internal successors, (473), 7 states have internal predecessors, (473), 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 21:49:29,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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 21:49:29,100 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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 21:49:29,100 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 171 flow. Second operand 7 states and 473 transitions. [2023-08-30 21:49:29,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 412 flow [2023-08-30 21:49:29,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 408 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 21:49:29,104 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 170 flow [2023-08-30 21:49:29,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2023-08-30 21:49:29,105 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2023-08-30 21:49:29,106 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 170 flow [2023-08-30 21:49:29,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 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 21:49:29,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:49:29,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:49:29,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 21:49:29,106 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:49:29,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:49:29,107 INFO L85 PathProgramCache]: Analyzing trace with hash -316507810, now seen corresponding path program 5 times [2023-08-30 21:49:29,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:49:29,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090081881] [2023-08-30 21:49:29,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:49:29,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:49:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:49:29,299 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 21:49:29,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:49:29,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090081881] [2023-08-30 21:49:29,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090081881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:49:29,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:49:29,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 21:49:29,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537944966] [2023-08-30 21:49:29,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:49:29,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 21:49:29,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:49:29,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 21:49:29,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 21:49:29,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 124 [2023-08-30 21:49:29,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 60.714285714285715) internal successors, (425), 7 states have internal predecessors, (425), 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 21:49:29,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:49:29,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 124 [2023-08-30 21:49:29,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:49:29,496 INFO L130 PetriNetUnfolder]: 166/472 cut-off events. [2023-08-30 21:49:29,496 INFO L131 PetriNetUnfolder]: For 481/506 co-relation queries the response was YES. [2023-08-30 21:49:29,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 472 events. 166/472 cut-off events. For 481/506 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2543 event pairs, 39 based on Foata normal form. 31/491 useless extension candidates. Maximal degree in co-relation 1265. Up to 130 conditions per place. [2023-08-30 21:49:29,499 INFO L137 encePairwiseOnDemand]: 117/124 looper letters, 38 selfloop transitions, 8 changer transitions 13/69 dead transitions. [2023-08-30 21:49:29,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 382 flow [2023-08-30 21:49:29,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 21:49:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 21:49:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 524 transitions. [2023-08-30 21:49:29,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282258064516129 [2023-08-30 21:49:29,501 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 524 transitions. [2023-08-30 21:49:29,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 524 transitions. [2023-08-30 21:49:29,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:49:29,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 524 transitions. [2023-08-30 21:49:29,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 65.5) internal successors, (524), 8 states have internal predecessors, (524), 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 21:49:29,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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 21:49:29,504 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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 21:49:29,505 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 170 flow. Second operand 8 states and 524 transitions. [2023-08-30 21:49:29,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 382 flow [2023-08-30 21:49:29,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 69 transitions, 365 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 21:49:29,508 INFO L231 Difference]: Finished difference. Result has 55 places, 35 transitions, 163 flow [2023-08-30 21:49:29,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=163, PETRI_PLACES=55, PETRI_TRANSITIONS=35} [2023-08-30 21:49:29,509 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2023-08-30 21:49:29,509 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 35 transitions, 163 flow [2023-08-30 21:49:29,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.714285714285715) internal successors, (425), 7 states have internal predecessors, (425), 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 21:49:29,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:49:29,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:49:29,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 21:49:29,510 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:49:29,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:49:29,510 INFO L85 PathProgramCache]: Analyzing trace with hash 531024426, now seen corresponding path program 6 times [2023-08-30 21:49:29,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:49:29,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2230324] [2023-08-30 21:49:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:49:29,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:49:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:49:29,570 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 21:49:29,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:49:29,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2230324] [2023-08-30 21:49:29,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2230324] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:49:29,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:49:29,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 21:49:29,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203725618] [2023-08-30 21:49:29,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:49:29,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 21:49:29,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:49:29,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 21:49:29,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 21:49:29,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 124 [2023-08-30 21:49:29,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 35 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:49:29,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:49:29,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 124 [2023-08-30 21:49:29,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:49:29,644 INFO L130 PetriNetUnfolder]: 100/321 cut-off events. [2023-08-30 21:49:29,645 INFO L131 PetriNetUnfolder]: For 423/441 co-relation queries the response was YES. [2023-08-30 21:49:29,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 321 events. 100/321 cut-off events. For 423/441 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1592 event pairs, 99 based on Foata normal form. 10/315 useless extension candidates. Maximal degree in co-relation 324. Up to 239 conditions per place. [2023-08-30 21:49:29,647 INFO L137 encePairwiseOnDemand]: 121/124 looper letters, 20 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-08-30 21:49:29,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 36 transitions, 209 flow [2023-08-30 21:49:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 21:49:29,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 21:49:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2023-08-30 21:49:29,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2023-08-30 21:49:29,649 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 214 transitions. [2023-08-30 21:49:29,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 214 transitions. [2023-08-30 21:49:29,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:49:29,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 214 transitions. [2023-08-30 21:49:29,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 21:49:29,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 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 21:49:29,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 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 21:49:29,653 INFO L175 Difference]: Start difference. First operand has 55 places, 35 transitions, 163 flow. Second operand 3 states and 214 transitions. [2023-08-30 21:49:29,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 36 transitions, 209 flow [2023-08-30 21:49:29,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 186 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-30 21:49:29,655 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 148 flow [2023-08-30 21:49:29,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2023-08-30 21:49:29,658 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-08-30 21:49:29,659 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 148 flow [2023-08-30 21:49:29,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:49:29,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:49:29,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:49:29,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 21:49:29,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:49:29,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:49:29,661 INFO L85 PathProgramCache]: Analyzing trace with hash -112876066, now seen corresponding path program 7 times [2023-08-30 21:49:29,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:49:29,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4989134] [2023-08-30 21:49:29,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:49:29,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:49:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:49:29,805 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 21:49:29,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:49:29,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4989134] [2023-08-30 21:49:29,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4989134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:49:29,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:49:29,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 21:49:29,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300256091] [2023-08-30 21:49:29,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:49:29,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 21:49:29,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:49:29,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 21:49:29,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 21:49:29,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 124 [2023-08-30 21:49:29,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 60.714285714285715) internal successors, (425), 7 states have internal predecessors, (425), 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 21:49:29,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:49:29,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 124 [2023-08-30 21:49:29,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:49:29,938 INFO L130 PetriNetUnfolder]: 93/261 cut-off events. [2023-08-30 21:49:29,939 INFO L131 PetriNetUnfolder]: For 217/221 co-relation queries the response was YES. [2023-08-30 21:49:29,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 261 events. 93/261 cut-off events. For 217/221 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1096 event pairs, 29 based on Foata normal form. 10/263 useless extension candidates. Maximal degree in co-relation 537. Up to 130 conditions per place. [2023-08-30 21:49:29,940 INFO L137 encePairwiseOnDemand]: 117/124 looper letters, 20 selfloop transitions, 3 changer transitions 12/45 dead transitions. [2023-08-30 21:49:29,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 242 flow [2023-08-30 21:49:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 21:49:29,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 21:49:29,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 384 transitions. [2023-08-30 21:49:29,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2023-08-30 21:49:29,942 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 384 transitions. [2023-08-30 21:49:29,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 384 transitions. [2023-08-30 21:49:29,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:49:29,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 384 transitions. [2023-08-30 21:49:29,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.0) internal successors, (384), 6 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:49:29,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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 21:49:29,945 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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 21:49:29,945 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 148 flow. Second operand 6 states and 384 transitions. [2023-08-30 21:49:29,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 242 flow [2023-08-30 21:49:29,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 236 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 21:49:29,947 INFO L231 Difference]: Finished difference. Result has 52 places, 29 transitions, 117 flow [2023-08-30 21:49:29,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=52, PETRI_TRANSITIONS=29} [2023-08-30 21:49:29,948 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2023-08-30 21:49:29,948 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 29 transitions, 117 flow [2023-08-30 21:49:29,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.714285714285715) internal successors, (425), 7 states have internal predecessors, (425), 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 21:49:29,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:49:29,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:49:29,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 21:49:29,949 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:49:29,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:49:29,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1385948734, now seen corresponding path program 8 times [2023-08-30 21:49:29,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:49:29,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625585464] [2023-08-30 21:49:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:49:29,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:49:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:49:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:49:30,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:49:30,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625585464] [2023-08-30 21:49:30,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625585464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:49:30,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:49:30,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 21:49:30,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282603294] [2023-08-30 21:49:30,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:49:30,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 21:49:30,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:49:30,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 21:49:30,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 21:49:30,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 124 [2023-08-30 21:49:30,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 29 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 60.714285714285715) internal successors, (425), 7 states have internal predecessors, (425), 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 21:49:30,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:49:30,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 124 [2023-08-30 21:49:30,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:49:30,153 INFO L130 PetriNetUnfolder]: 31/86 cut-off events. [2023-08-30 21:49:30,153 INFO L131 PetriNetUnfolder]: For 64/66 co-relation queries the response was YES. [2023-08-30 21:49:30,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 86 events. 31/86 cut-off events. For 64/66 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 238 event pairs, 2 based on Foata normal form. 8/93 useless extension candidates. Maximal degree in co-relation 248. Up to 26 conditions per place. [2023-08-30 21:49:30,154 INFO L137 encePairwiseOnDemand]: 118/124 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-30 21:49:30,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 30 transitions, 166 flow [2023-08-30 21:49:30,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 21:49:30,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 21:49:30,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 431 transitions. [2023-08-30 21:49:30,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965437788018433 [2023-08-30 21:49:30,156 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 431 transitions. [2023-08-30 21:49:30,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 431 transitions. [2023-08-30 21:49:30,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:49:30,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 431 transitions. [2023-08-30 21:49:30,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.57142857142857) internal successors, (431), 7 states have internal predecessors, (431), 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 21:49:30,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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 21:49:30,159 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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 21:49:30,159 INFO L175 Difference]: Start difference. First operand has 52 places, 29 transitions, 117 flow. Second operand 7 states and 431 transitions. [2023-08-30 21:49:30,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 30 transitions, 166 flow [2023-08-30 21:49:30,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 131 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-08-30 21:49:30,161 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-08-30 21:49:30,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-08-30 21:49:30,161 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-30 21:49:30,161 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-08-30 21:49:30,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.714285714285715) internal successors, (425), 7 states have internal predecessors, (425), 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 21:49:30,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-30 21:49:30,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-30 21:49:30,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-30 21:49:30,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 21:49:30,165 INFO L445 BasicCegarLoop]: Path program histogram: [8] [2023-08-30 21:49:30,167 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 21:49:30,167 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 21:49:30,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 09:49:30 BasicIcfg [2023-08-30 21:49:30,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 21:49:30,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 21:49:30,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 21:49:30,170 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 21:49:30,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:49:25" (3/4) ... [2023-08-30 21:49:30,173 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 21:49:30,177 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 21:49:30,177 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 21:49:30,180 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-08-30 21:49:30,181 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 21:49:30,181 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 21:49:30,181 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 21:49:30,206 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 21:49:30,206 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 21:49:30,206 INFO L158 Benchmark]: Toolchain (without parser) took 5796.21ms. Allocated memory was 62.9MB in the beginning and 111.1MB in the end (delta: 48.2MB). Free memory was 34.8MB in the beginning and 36.0MB in the end (delta: -1.2MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2023-08-30 21:49:30,207 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 28.7MB in the beginning and 28.7MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 21:49:30,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.35ms. Allocated memory is still 62.9MB. Free memory was 34.5MB in the beginning and 39.5MB in the end (delta: -5.0MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2023-08-30 21:49:30,207 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.83ms. Allocated memory is still 62.9MB. Free memory was 39.2MB in the beginning and 37.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 21:49:30,207 INFO L158 Benchmark]: Boogie Preprocessor took 44.10ms. Allocated memory is still 62.9MB. Free memory was 37.6MB in the beginning and 36.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 21:49:30,208 INFO L158 Benchmark]: RCFGBuilder took 451.86ms. Allocated memory is still 62.9MB. Free memory was 36.4MB in the beginning and 35.9MB in the end (delta: 454.5kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 21:49:30,208 INFO L158 Benchmark]: TraceAbstraction took 4930.90ms. Allocated memory was 62.9MB in the beginning and 111.1MB in the end (delta: 48.2MB). Free memory was 35.2MB in the beginning and 38.1MB in the end (delta: -2.9MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2023-08-30 21:49:30,208 INFO L158 Benchmark]: Witness Printer took 35.73ms. Allocated memory is still 111.1MB. Free memory was 38.1MB in the beginning and 36.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 21:49:30,210 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 50.3MB. Free memory was 28.7MB in the beginning and 28.7MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.35ms. Allocated memory is still 62.9MB. Free memory was 34.5MB in the beginning and 39.5MB in the end (delta: -5.0MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.83ms. Allocated memory is still 62.9MB. Free memory was 39.2MB in the beginning and 37.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.10ms. Allocated memory is still 62.9MB. Free memory was 37.6MB in the beginning and 36.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 451.86ms. Allocated memory is still 62.9MB. Free memory was 36.4MB in the beginning and 35.9MB in the end (delta: 454.5kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4930.90ms. Allocated memory was 62.9MB in the beginning and 111.1MB in the end (delta: 48.2MB). Free memory was 35.2MB in the beginning and 38.1MB in the end (delta: -2.9MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. * Witness Printer took 35.73ms. Allocated memory is still 111.1MB. Free memory was 38.1MB in the beginning and 36.0MB in the end (delta: 2.1MB). 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: 1.6s, 74 PlacesBefore, 34 PlacesAfterwards, 68 TransitionsBefore, 27 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 5 FixpointIterations, 31 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 3197 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1280, independent: 1080, independent conditional: 0, independent unconditional: 1080, dependent: 200, dependent conditional: 0, dependent unconditional: 200, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 285, independent: 268, independent conditional: 0, independent unconditional: 268, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1280, independent: 812, independent conditional: 0, independent unconditional: 812, dependent: 183, dependent conditional: 0, dependent unconditional: 183, unknown: 285, unknown conditional: 0, unknown unconditional: 285] , Statistics on independence cache: Total cache size (in pairs): 100, Positive cache size: 88, Positive conditional cache size: 0, Positive unconditional cache size: 88, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 116]: 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, 104 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: 4.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 414 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 366 mSDsluCounter, 128 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 88 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1068 IncrementalHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 40 mSDtfsCounter, 1068 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=3, InterpolantAutomatonStates: 50, 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, 1.2s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 791 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 21:49:30,229 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