./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-simpl-str-subst.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 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 12:14:18,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 12:14:18,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 12:14:18,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 12:14:18,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 12:14:18,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 12:14:18,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 12:14:18,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 12:14:18,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 12:14:18,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 12:14:18,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 12:14:18,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 12:14:18,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 12:14:18,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 12:14:18,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 12:14:18,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 12:14:18,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 12:14:18,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 12:14:18,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 12:14:18,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 12:14:18,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 12:14:18,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 12:14:18,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 12:14:18,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 12:14:18,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 12:14:18,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 12:14:18,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 12:14:18,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 12:14:18,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 12:14:18,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 12:14:18,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 12:14:18,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 12:14:18,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 12:14:18,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 12:14:18,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 12:14:18,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 12:14:18,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 12:14:18,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 12:14:18,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 12:14:18,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 12:14:18,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 12:14:18,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 12:14:18,692 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 12:14:18,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 12:14:18,694 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 12:14:18,694 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 12:14:18,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 12:14:18,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 12:14:18,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 12:14:18,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 12:14:18,696 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 12:14:18,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 12:14:18,697 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 12:14:18,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 12:14:18,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 12:14:18,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 12:14:18,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 12:14:18,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 12:14:18,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 12:14:18,698 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 12:14:18,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 12:14:18,699 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 12:14:18,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 12:14:18,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 12:14:18,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 12:14:18,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 12:14:18,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:14:18,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 12:14:18,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 12:14:18,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 12:14:18,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 12:14:18,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 12:14:18,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 12:14:18,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 12:14:18,701 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 12:14:18,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 12:14:18,702 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 12:14:18,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 12:14:19,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 12:14:19,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 12:14:19,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 12:14:19,025 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 12:14:19,025 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 12:14:19,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2023-09-01 12:14:20,165 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 12:14:20,351 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 12:14:20,352 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2023-09-01 12:14:20,357 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/624aaf622/9101f9721c2b4f89a2ce0f6a8036c182/FLAG95da4b621 [2023-09-01 12:14:20,370 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/624aaf622/9101f9721c2b4f89a2ce0f6a8036c182 [2023-09-01 12:14:20,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 12:14:20,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 12:14:20,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 12:14:20,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 12:14:20,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 12:14:20,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:14:20" (1/1) ... [2023-09-01 12:14:20,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f6f38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:20, skipping insertion in model container [2023-09-01 12:14:20,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:14:20" (1/1) ... [2023-09-01 12:14:20,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 12:14:20,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 12:14:20,574 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/chl-simpl-str-subst.wvr.c[2575,2588] [2023-09-01 12:14:20,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:14:20,597 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 12:14:20,632 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/chl-simpl-str-subst.wvr.c[2575,2588] [2023-09-01 12:14:20,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:14:20,648 INFO L208 MainTranslator]: Completed translation [2023-09-01 12:14:20,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:20 WrapperNode [2023-09-01 12:14:20,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 12:14:20,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 12:14:20,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 12:14:20,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 12:14:20,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:20" (1/1) ... [2023-09-01 12:14:20,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:20" (1/1) ... [2023-09-01 12:14:20,700 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 173 [2023-09-01 12:14:20,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 12:14:20,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 12:14:20,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 12:14:20,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 12:14:20,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:20" (1/1) ... [2023-09-01 12:14:20,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:20" (1/1) ... [2023-09-01 12:14:20,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:20" (1/1) ... [2023-09-01 12:14:20,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:20" (1/1) ... [2023-09-01 12:14:20,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:20" (1/1) ... [2023-09-01 12:14:20,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:20" (1/1) ... [2023-09-01 12:14:20,740 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:20" (1/1) ... [2023-09-01 12:14:20,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:20" (1/1) ... [2023-09-01 12:14:20,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 12:14:20,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 12:14:20,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 12:14:20,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 12:14:20,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:20" (1/1) ... [2023-09-01 12:14:20,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:14:20,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:14:20,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 12:14:20,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 12:14:20,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 12:14:20,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 12:14:20,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 12:14:20,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 12:14:20,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 12:14:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 12:14:20,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 12:14:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 12:14:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 12:14:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 12:14:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 12:14:20,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 12:14:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 12:14:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 12:14:20,832 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 12:14:20,949 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 12:14:20,951 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 12:14:21,269 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 12:14:21,278 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 12:14:21,278 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 12:14:21,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:14:21 BoogieIcfgContainer [2023-09-01 12:14:21,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 12:14:21,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 12:14:21,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 12:14:21,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 12:14:21,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:14:20" (1/3) ... [2023-09-01 12:14:21,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f08a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:14:21, skipping insertion in model container [2023-09-01 12:14:21,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:20" (2/3) ... [2023-09-01 12:14:21,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f08a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:14:21, skipping insertion in model container [2023-09-01 12:14:21,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:14:21" (3/3) ... [2023-09-01 12:14:21,287 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2023-09-01 12:14:21,294 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 12:14:21,302 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 12:14:21,303 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 12:14:21,303 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 12:14:21,418 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 12:14:21,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 201 transitions, 426 flow [2023-09-01 12:14:21,595 INFO L130 PetriNetUnfolder]: 14/198 cut-off events. [2023-09-01 12:14:21,595 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:14:21,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 198 events. 14/198 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 367 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-09-01 12:14:21,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 201 transitions, 426 flow [2023-09-01 12:14:21,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 188 transitions, 394 flow [2023-09-01 12:14:21,614 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 12:14:21,630 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 188 transitions, 394 flow [2023-09-01 12:14:21,633 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 188 transitions, 394 flow [2023-09-01 12:14:21,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 188 transitions, 394 flow [2023-09-01 12:14:21,691 INFO L130 PetriNetUnfolder]: 14/188 cut-off events. [2023-09-01 12:14:21,691 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:14:21,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 188 events. 14/188 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 366 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-09-01 12:14:21,700 INFO L119 LiptonReduction]: Number of co-enabled transitions 9384 [2023-09-01 12:14:27,200 INFO L134 LiptonReduction]: Checked pairs total: 8713 [2023-09-01 12:14:27,200 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-09-01 12:14:27,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 12:14:27,224 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;@778b8827, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 12:14:27,225 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 12:14:27,242 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-09-01 12:14:27,242 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:14:27,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:14:27,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:14:27,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:14:27,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:14:27,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1579697146, now seen corresponding path program 1 times [2023-09-01 12:14:27,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:14:27,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957275742] [2023-09-01 12:14:27,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:14:27,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:14:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:14:28,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:14:28,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:14:28,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957275742] [2023-09-01 12:14:28,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957275742] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:14:28,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:14:28,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:14:28,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413783018] [2023-09-01 12:14:28,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:14:28,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:14:28,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:14:28,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:14:28,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:14:29,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 421 [2023-09-01 12:14:29,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:29,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:14:29,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 421 [2023-09-01 12:14:29,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:14:29,509 INFO L130 PetriNetUnfolder]: 38/100 cut-off events. [2023-09-01 12:14:29,509 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-09-01 12:14:29,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 283 event pairs, 2 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 169. Up to 38 conditions per place. [2023-09-01 12:14:29,511 INFO L137 encePairwiseOnDemand]: 416/421 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-09-01 12:14:29,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-09-01 12:14:29,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:14:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:14:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1054 transitions. [2023-09-01 12:14:29,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172604908946952 [2023-09-01 12:14:29,537 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1054 transitions. [2023-09-01 12:14:29,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1054 transitions. [2023-09-01 12:14:29,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:14:29,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1054 transitions. [2023-09-01 12:14:29,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.66666666666666) internal successors, (1054), 6 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:29,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:29,558 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:29,559 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 1054 transitions. [2023-09-01 12:14:29,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-09-01 12:14:29,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 12:14:29,565 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-09-01 12:14:29,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-09-01 12:14:29,570 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-09-01 12:14:29,570 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-09-01 12:14:29,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:29,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:14:29,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:14:29,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 12:14:29,573 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:14:29,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:14:29,582 INFO L85 PathProgramCache]: Analyzing trace with hash -65087284, now seen corresponding path program 2 times [2023-09-01 12:14:29,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:14:29,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863798809] [2023-09-01 12:14:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:14:29,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:14:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:14:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:14:30,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:14:30,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863798809] [2023-09-01 12:14:30,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863798809] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:14:30,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:14:30,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:14:30,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542722933] [2023-09-01 12:14:30,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:14:30,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:14:30,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:14:30,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:14:30,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:14:30,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 421 [2023-09-01 12:14:30,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:30,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:14:30,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 421 [2023-09-01 12:14:30,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:14:31,010 INFO L130 PetriNetUnfolder]: 38/116 cut-off events. [2023-09-01 12:14:31,010 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-09-01 12:14:31,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 116 events. 38/116 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 413 event pairs, 6 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 309. Up to 58 conditions per place. [2023-09-01 12:14:31,011 INFO L137 encePairwiseOnDemand]: 416/421 looper letters, 30 selfloop transitions, 7 changer transitions 9/46 dead transitions. [2023-09-01 12:14:31,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 235 flow [2023-09-01 12:14:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:14:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:14:31,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1054 transitions. [2023-09-01 12:14:31,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172604908946952 [2023-09-01 12:14:31,015 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1054 transitions. [2023-09-01 12:14:31,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1054 transitions. [2023-09-01 12:14:31,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:14:31,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1054 transitions. [2023-09-01 12:14:31,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.66666666666666) internal successors, (1054), 6 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:31,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:31,023 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:31,023 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 6 states and 1054 transitions. [2023-09-01 12:14:31,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 235 flow [2023-09-01 12:14:31,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 231 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 12:14:31,025 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 100 flow [2023-09-01 12:14:31,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2023-09-01 12:14:31,026 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-09-01 12:14:31,026 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 100 flow [2023-09-01 12:14:31,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:31,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:14:31,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:14:31,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 12:14:31,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:14:31,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:14:31,028 INFO L85 PathProgramCache]: Analyzing trace with hash 255126654, now seen corresponding path program 3 times [2023-09-01 12:14:31,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:14:31,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861116742] [2023-09-01 12:14:31,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:14:31,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:14:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:14:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:14:32,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:14:32,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861116742] [2023-09-01 12:14:32,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861116742] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:14:32,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:14:32,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:14:32,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118390337] [2023-09-01 12:14:32,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:14:32,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:14:32,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:14:32,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:14:32,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:14:32,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 421 [2023-09-01 12:14:32,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:32,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:14:32,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 421 [2023-09-01 12:14:32,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:14:32,555 INFO L130 PetriNetUnfolder]: 33/103 cut-off events. [2023-09-01 12:14:32,556 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2023-09-01 12:14:32,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 103 events. 33/103 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 337 event pairs, 2 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 334. Up to 51 conditions per place. [2023-09-01 12:14:32,556 INFO L137 encePairwiseOnDemand]: 416/421 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-09-01 12:14:32,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 257 flow [2023-09-01 12:14:32,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:14:32,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:14:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1052 transitions. [2023-09-01 12:14:32,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4164687252573238 [2023-09-01 12:14:32,560 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1052 transitions. [2023-09-01 12:14:32,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1052 transitions. [2023-09-01 12:14:32,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:14:32,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1052 transitions. [2023-09-01 12:14:32,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.33333333333334) internal successors, (1052), 6 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:32,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:32,568 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:32,568 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 100 flow. Second operand 6 states and 1052 transitions. [2023-09-01 12:14:32,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 257 flow [2023-09-01 12:14:32,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 243 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-09-01 12:14:32,571 INFO L231 Difference]: Finished difference. Result has 38 places, 20 transitions, 100 flow [2023-09-01 12:14:32,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=20} [2023-09-01 12:14:32,572 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-09-01 12:14:32,572 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions, 100 flow [2023-09-01 12:14:32,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:32,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:14:32,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:14:32,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 12:14:32,573 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:14:32,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:14:32,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1251070020, now seen corresponding path program 4 times [2023-09-01 12:14:32,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:14:32,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690863969] [2023-09-01 12:14:32,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:14:32,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:14:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:14:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:14:33,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:14:33,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690863969] [2023-09-01 12:14:33,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690863969] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:14:33,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:14:33,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:14:33,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911142385] [2023-09-01 12:14:33,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:14:33,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:14:33,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:14:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:14:33,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:14:33,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 421 [2023-09-01 12:14:33,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:33,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:14:33,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 421 [2023-09-01 12:14:33,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:14:33,893 INFO L130 PetriNetUnfolder]: 17/59 cut-off events. [2023-09-01 12:14:33,894 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2023-09-01 12:14:33,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 59 events. 17/59 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 205. Up to 20 conditions per place. [2023-09-01 12:14:33,894 INFO L137 encePairwiseOnDemand]: 416/421 looper letters, 18 selfloop transitions, 5 changer transitions 13/36 dead transitions. [2023-09-01 12:14:33,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 219 flow [2023-09-01 12:14:33,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:14:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:14:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1044 transitions. [2023-09-01 12:14:33,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41330166270783847 [2023-09-01 12:14:33,898 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1044 transitions. [2023-09-01 12:14:33,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1044 transitions. [2023-09-01 12:14:33,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:14:33,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1044 transitions. [2023-09-01 12:14:33,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:33,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:33,908 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:33,908 INFO L175 Difference]: Start difference. First operand has 38 places, 20 transitions, 100 flow. Second operand 6 states and 1044 transitions. [2023-09-01 12:14:33,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 219 flow [2023-09-01 12:14:33,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 202 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-09-01 12:14:33,913 INFO L231 Difference]: Finished difference. Result has 37 places, 18 transitions, 81 flow [2023-09-01 12:14:33,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=37, PETRI_TRANSITIONS=18} [2023-09-01 12:14:33,914 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-09-01 12:14:33,915 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 81 flow [2023-09-01 12:14:33,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:33,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:14:33,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:14:33,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 12:14:33,916 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:14:33,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:14:33,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1460522632, now seen corresponding path program 5 times [2023-09-01 12:14:33,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:14:33,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241729316] [2023-09-01 12:14:33,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:14:33,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:14:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:14:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:14:34,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:14:34,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241729316] [2023-09-01 12:14:34,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241729316] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:14:34,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:14:34,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 12:14:34,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038593697] [2023-09-01 12:14:34,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:14:34,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 12:14:34,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:14:34,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 12:14:34,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 12:14:35,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 421 [2023-09-01 12:14:35,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 18 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:35,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:14:35,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 421 [2023-09-01 12:14:35,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:14:35,349 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-09-01 12:14:35,349 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-09-01 12:14:35,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 40 events. 8/40 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 134. Up to 19 conditions per place. [2023-09-01 12:14:35,349 INFO L137 encePairwiseOnDemand]: 416/421 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-09-01 12:14:35,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 30 transitions, 178 flow [2023-09-01 12:14:35,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:14:35,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:14:35,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1186 transitions. [2023-09-01 12:14:35,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024431625381744 [2023-09-01 12:14:35,353 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1186 transitions. [2023-09-01 12:14:35,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1186 transitions. [2023-09-01 12:14:35,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:14:35,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1186 transitions. [2023-09-01 12:14:35,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.42857142857142) internal successors, (1186), 7 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:35,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 421.0) internal successors, (3368), 8 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:35,360 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 421.0) internal successors, (3368), 8 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:35,361 INFO L175 Difference]: Start difference. First operand has 37 places, 18 transitions, 81 flow. Second operand 7 states and 1186 transitions. [2023-09-01 12:14:35,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 30 transitions, 178 flow [2023-09-01 12:14:35,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 144 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-09-01 12:14:35,362 INFO L231 Difference]: Finished difference. Result has 34 places, 16 transitions, 56 flow [2023-09-01 12:14:35,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=56, PETRI_PLACES=34, PETRI_TRANSITIONS=16} [2023-09-01 12:14:35,364 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-09-01 12:14:35,365 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 16 transitions, 56 flow [2023-09-01 12:14:35,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:35,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:14:35,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:14:35,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 12:14:35,367 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:14:35,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:14:35,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2031977438, now seen corresponding path program 6 times [2023-09-01 12:14:35,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:14:35,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267459918] [2023-09-01 12:14:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:14:35,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:14:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:14:36,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:14:36,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:14:36,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267459918] [2023-09-01 12:14:36,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267459918] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:14:36,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:14:36,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 12:14:36,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013245987] [2023-09-01 12:14:36,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:14:36,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 12:14:36,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:14:36,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 12:14:36,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 12:14:36,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 421 [2023-09-01 12:14:36,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 16 transitions, 56 flow. Second operand has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:36,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:14:36,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 421 [2023-09-01 12:14:36,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:14:36,833 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-09-01 12:14:36,833 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 12:14:36,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 62. Up to 8 conditions per place. [2023-09-01 12:14:36,833 INFO L137 encePairwiseOnDemand]: 416/421 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-09-01 12:14:36,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 18 transitions, 94 flow [2023-09-01 12:14:36,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 12:14:36,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 12:14:36,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1009 transitions. [2023-09-01 12:14:36,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3994457640538401 [2023-09-01 12:14:36,837 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1009 transitions. [2023-09-01 12:14:36,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1009 transitions. [2023-09-01 12:14:36,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:14:36,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1009 transitions. [2023-09-01 12:14:36,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.16666666666666) internal successors, (1009), 6 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:36,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:36,843 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:36,843 INFO L175 Difference]: Start difference. First operand has 34 places, 16 transitions, 56 flow. Second operand 6 states and 1009 transitions. [2023-09-01 12:14:36,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 18 transitions, 94 flow [2023-09-01 12:14:36,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 79 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-09-01 12:14:36,844 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-09-01 12:14:36,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-09-01 12:14:36,845 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-09-01 12:14:36,845 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-09-01 12:14:36,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:14:36,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-09-01 12:14:36,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-09-01 12:14:36,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 12:14:36,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 12:14:36,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 12:14:36,849 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-09-01 12:14:36,851 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 12:14:36,851 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 12:14:36,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:14:36 BasicIcfg [2023-09-01 12:14:36,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 12:14:36,854 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 12:14:36,854 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 12:14:36,855 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 12:14:36,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:14:21" (3/4) ... [2023-09-01 12:14:36,857 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 12:14:36,862 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 12:14:36,862 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 12:14:36,862 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 12:14:36,867 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-09-01 12:14:36,867 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 12:14:36,867 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 12:14:36,867 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 12:14:36,918 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 12:14:36,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 12:14:36,919 INFO L158 Benchmark]: Toolchain (without parser) took 16545.15ms. Allocated memory was 83.9MB in the beginning and 281.0MB in the end (delta: 197.1MB). Free memory was 60.6MB in the beginning and 229.4MB in the end (delta: -168.8MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2023-09-01 12:14:36,919 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory is still 39.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 12:14:36,919 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.39ms. Allocated memory is still 83.9MB. Free memory was 60.4MB in the beginning and 49.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 12:14:36,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.14ms. Allocated memory is still 83.9MB. Free memory was 49.1MB in the beginning and 47.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 12:14:36,920 INFO L158 Benchmark]: Boogie Preprocessor took 48.72ms. Allocated memory is still 83.9MB. Free memory was 46.8MB in the beginning and 45.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 12:14:36,920 INFO L158 Benchmark]: RCFGBuilder took 529.53ms. Allocated memory is still 83.9MB. Free memory was 45.4MB in the beginning and 48.5MB in the end (delta: -3.1MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2023-09-01 12:14:36,920 INFO L158 Benchmark]: TraceAbstraction took 15571.81ms. Allocated memory was 83.9MB in the beginning and 281.0MB in the end (delta: 197.1MB). Free memory was 47.6MB in the beginning and 232.5MB in the end (delta: -184.9MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2023-09-01 12:14:36,920 INFO L158 Benchmark]: Witness Printer took 63.81ms. Allocated memory is still 281.0MB. Free memory was 232.5MB in the beginning and 229.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 12:14:36,922 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory is still 39.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 274.39ms. Allocated memory is still 83.9MB. Free memory was 60.4MB in the beginning and 49.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.14ms. Allocated memory is still 83.9MB. Free memory was 49.1MB in the beginning and 47.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.72ms. Allocated memory is still 83.9MB. Free memory was 46.8MB in the beginning and 45.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 529.53ms. Allocated memory is still 83.9MB. Free memory was 45.4MB in the beginning and 48.5MB in the end (delta: -3.1MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * TraceAbstraction took 15571.81ms. Allocated memory was 83.9MB in the beginning and 281.0MB in the end (delta: 197.1MB). Free memory was 47.6MB in the beginning and 232.5MB in the end (delta: -184.9MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Witness Printer took 63.81ms. Allocated memory is still 281.0MB. Free memory was 232.5MB in the beginning and 229.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6s, 184 PlacesBefore, 26 PlacesAfterwards, 188 TransitionsBefore, 16 TransitionsAfterwards, 9384 CoEnabledTransitionPairs, 8 FixpointIterations, 60 TrivialSequentialCompositions, 96 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 44 ConcurrentYvCompositions, 14 ChoiceCompositions, 220 TotalNumberOfCompositions, 8713 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8713, independent: 8713, independent conditional: 0, independent unconditional: 8713, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5808, independent: 5808, independent conditional: 0, independent unconditional: 5808, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8713, independent: 2905, independent conditional: 0, independent unconditional: 2905, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 5808, unknown conditional: 0, unknown unconditional: 5808] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 81]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 284 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1132 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 730 mSDsluCounter, 848 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 608 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1701 IncrementalHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 240 mSDtfsCounter, 1701 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=2, InterpolantAutomatonStates: 37, 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, 0.4s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2702 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 12:14:36,948 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