./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 da30eeece05d9ad0253475007690346fed1beff7 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 14:21:22,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 14:21:22,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 14:21:22,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-08 14:21:22,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-08 14:21:22,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-08 14:21:22,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-08 14:21:22,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-08 14:21:22,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-08 14:21:22,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-08 14:21:22,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-08 14:21:22,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-08 14:21:22,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 14:21:22,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 14:21:22,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 14:21:22,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 14:21:22,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 14:21:22,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 14:21:22,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 14:21:22,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 14:21:22,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 14:21:22,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 14:21:22,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 14:21:22,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 14:21:22,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-08 14:21:22,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-08 14:21:22,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-08 14:21:22,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-08 14:21:22,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-08 14:21:22,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-08 14:21:22,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 14:21:22,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 14:21:22,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 14:21:22,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 14:21:22,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 14:21:22,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 14:21:22,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 14:21:22,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 14:21:22,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 14:21:22,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 14:21:22,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 14:21:22,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-08 14:21:22,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 14:21:22,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 14:21:22,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 14:21:22,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 14:21:22,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 14:21:22,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 14:21:22,770 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 14:21:22,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 14:21:22,770 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 14:21:22,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 14:21:22,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 14:21:22,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 14:21:22,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 14:21:22,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 14:21:22,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 14:21:22,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 14:21:22,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 14:21:22,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 14:21:22,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 14:21:22,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 14:21:22,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 14:21:22,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 14:21:22,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 14:21:22,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 14:21:22,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 14:21:22,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 14:21:22,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 14:21:22,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 14:21:22,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 14:21:22,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 14:21:22,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da30eeece05d9ad0253475007690346fed1beff7 [2021-10-08 14:21:23,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 14:21:23,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 14:21:23,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 14:21:23,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 14:21:23,229 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 14:21:23,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2021-10-08 14:21:23,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2064f1bce/58357907aef9424e859de0e942f34104/FLAG697de063e [2021-10-08 14:21:23,911 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 14:21:23,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2021-10-08 14:21:23,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2064f1bce/58357907aef9424e859de0e942f34104/FLAG697de063e [2021-10-08 14:21:24,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2064f1bce/58357907aef9424e859de0e942f34104 [2021-10-08 14:21:24,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 14:21:24,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 14:21:24,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 14:21:24,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 14:21:24,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 14:21:24,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 02:21:24" (1/1) ... [2021-10-08 14:21:24,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a49cc7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:24, skipping insertion in model container [2021-10-08 14:21:24,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 02:21:24" (1/1) ... [2021-10-08 14:21:24,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 14:21:24,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 14:21:24,559 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3398,3411] [2021-10-08 14:21:24,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 14:21:24,600 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 14:21:24,630 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3398,3411] [2021-10-08 14:21:24,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 14:21:24,658 INFO L208 MainTranslator]: Completed translation [2021-10-08 14:21:24,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:24 WrapperNode [2021-10-08 14:21:24,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 14:21:24,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 14:21:24,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 14:21:24,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 14:21:24,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:24" (1/1) ... [2021-10-08 14:21:24,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:24" (1/1) ... [2021-10-08 14:21:24,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 14:21:24,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 14:21:24,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 14:21:24,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 14:21:24,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:24" (1/1) ... [2021-10-08 14:21:24,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:24" (1/1) ... [2021-10-08 14:21:24,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:24" (1/1) ... [2021-10-08 14:21:24,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:24" (1/1) ... [2021-10-08 14:21:24,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:24" (1/1) ... [2021-10-08 14:21:24,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:24" (1/1) ... [2021-10-08 14:21:24,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:24" (1/1) ... [2021-10-08 14:21:24,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 14:21:24,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 14:21:24,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 14:21:24,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 14:21:24,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:24" (1/1) ... [2021-10-08 14:21:24,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 14:21:24,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 14:21:24,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 14:21:24,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 14:21:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 14:21:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 14:21:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 14:21:24,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 14:21:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 14:21:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 14:21:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 14:21:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 14:21:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 14:21:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 14:21:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 14:21:24,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 14:21:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 14:21:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 14:21:24,882 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 14:21:26,001 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 14:21:26,001 INFO L299 CfgBuilder]: Removed 40 assume(true) statements. [2021-10-08 14:21:26,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:21:26 BoogieIcfgContainer [2021-10-08 14:21:26,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 14:21:26,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 14:21:26,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 14:21:26,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 14:21:26,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 02:21:24" (1/3) ... [2021-10-08 14:21:26,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5634ae62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 02:21:26, skipping insertion in model container [2021-10-08 14:21:26,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:21:24" (2/3) ... [2021-10-08 14:21:26,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5634ae62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 02:21:26, skipping insertion in model container [2021-10-08 14:21:26,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:21:26" (3/3) ... [2021-10-08 14:21:26,013 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2021-10-08 14:21:26,018 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 14:21:26,018 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 14:21:26,018 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-08 14:21:26,019 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 14:21:26,071 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,074 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,074 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,075 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,075 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,075 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,075 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,075 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,076 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,077 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,077 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,077 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,077 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,078 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,079 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,079 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,079 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,079 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,080 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,080 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,080 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,080 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,080 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,080 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,080 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,081 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,081 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,081 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,081 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,081 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,081 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,082 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,083 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,083 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,083 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,083 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,083 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,083 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,084 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,085 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,085 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,085 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,086 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,086 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,086 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,087 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,090 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,090 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,090 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,091 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,091 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,091 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,091 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,091 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,092 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,092 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,092 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,092 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,094 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,094 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,095 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,095 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,095 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,095 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,095 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,096 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,096 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,096 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,096 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,096 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:21:26,102 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 14:21:26,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 14:21:26,156 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 14:21:26,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-08 14:21:26,179 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 14:21:26,190 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 256 transitions, 528 flow [2021-10-08 14:21:26,193 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 256 transitions, 528 flow [2021-10-08 14:21:26,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 239 places, 256 transitions, 528 flow [2021-10-08 14:21:26,333 INFO L129 PetriNetUnfolder]: 24/254 cut-off events. [2021-10-08 14:21:26,333 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 14:21:26,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 254 events. 24/254 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 116 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 209. Up to 2 conditions per place. [2021-10-08 14:21:26,346 INFO L116 LiptonReduction]: Number of co-enabled transitions 108 [2021-10-08 14:21:40,407 INFO L131 LiptonReduction]: Checked pairs total: 203 [2021-10-08 14:21:40,407 INFO L133 LiptonReduction]: Total number of compositions: 303 [2021-10-08 14:21:40,420 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 22 transitions, 60 flow [2021-10-08 14:21:40,433 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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) [2021-10-08 14:21:40,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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) [2021-10-08 14:21:40,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 14:21:40,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:40,441 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:21:40,442 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-08 14:21:40,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:40,449 INFO L82 PathProgramCache]: Analyzing trace with hash -5040265, now seen corresponding path program 1 times [2021-10-08 14:21:40,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:40,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592833583] [2021-10-08 14:21:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:40,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:21:40,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:40,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592833583] [2021-10-08 14:21:40,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592833583] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:40,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:21:40,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 14:21:40,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318063508] [2021-10-08 14:21:40,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 14:21:40,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:40,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 14:21:40,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 14:21:40,928 INFO L87 Difference]: Start difference. First operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2021-10-08 14:21:40,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:40,953 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2021-10-08 14:21:40,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 14:21:40,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) Word has length 15 [2021-10-08 14:21:40,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:40,963 INFO L225 Difference]: With dead ends: 25 [2021-10-08 14:21:40,964 INFO L226 Difference]: Without dead ends: 25 [2021-10-08 14:21:40,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 14:21:40,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-08 14:21:40,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-08 14:21:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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) [2021-10-08 14:21:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 37 transitions. [2021-10-08 14:21:40,998 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 37 transitions. Word has length 15 [2021-10-08 14:21:40,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:40,998 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 37 transitions. [2021-10-08 14:21:40,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2021-10-08 14:21:40,999 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 37 transitions. [2021-10-08 14:21:41,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 14:21:41,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:41,000 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:21:41,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 14:21:41,001 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-08 14:21:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:41,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1107253036, now seen corresponding path program 1 times [2021-10-08 14:21:41,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:41,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48889038] [2021-10-08 14:21:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:41,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:41,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 14:21:41,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:41,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48889038] [2021-10-08 14:21:41,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48889038] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:41,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:21:41,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 14:21:41,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109512474] [2021-10-08 14:21:41,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 14:21:41,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:41,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 14:21:41,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 14:21:41,103 INFO L87 Difference]: Start difference. First operand 25 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-10-08 14:21:41,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:41,134 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2021-10-08 14:21:41,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 14:21:41,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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) Word has length 16 [2021-10-08 14:21:41,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:41,136 INFO L225 Difference]: With dead ends: 26 [2021-10-08 14:21:41,136 INFO L226 Difference]: Without dead ends: 26 [2021-10-08 14:21:41,137 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 14:21:41,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-08 14:21:41,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-08 14:21:41,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 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) [2021-10-08 14:21:41,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 38 transitions. [2021-10-08 14:21:41,142 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 38 transitions. Word has length 16 [2021-10-08 14:21:41,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:41,142 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 38 transitions. [2021-10-08 14:21:41,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-10-08 14:21:41,143 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 38 transitions. [2021-10-08 14:21:41,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 14:21:41,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:41,144 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:21:41,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-08 14:21:41,145 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-08 14:21:41,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:41,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1085319309, now seen corresponding path program 1 times [2021-10-08 14:21:41,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:41,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370957810] [2021-10-08 14:21:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:41,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 14:21:41,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:41,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370957810] [2021-10-08 14:21:41,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370957810] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:41,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:21:41,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 14:21:41,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806793634] [2021-10-08 14:21:41,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 14:21:41,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:41,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 14:21:41,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 14:21:41,247 INFO L87 Difference]: Start difference. First operand 26 states and 38 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-10-08 14:21:41,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:41,272 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2021-10-08 14:21:41,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 14:21:41,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) Word has length 17 [2021-10-08 14:21:41,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:41,274 INFO L225 Difference]: With dead ends: 27 [2021-10-08 14:21:41,274 INFO L226 Difference]: Without dead ends: 27 [2021-10-08 14:21:41,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 14:21:41,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-08 14:21:41,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-08 14:21:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.5) internal successors, (39), 26 states have internal predecessors, (39), 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) [2021-10-08 14:21:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2021-10-08 14:21:41,283 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 17 [2021-10-08 14:21:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:41,284 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-10-08 14:21:41,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-10-08 14:21:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2021-10-08 14:21:41,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 14:21:41,285 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:41,286 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:21:41,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-08 14:21:41,286 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-08 14:21:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:41,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1889821507, now seen corresponding path program 1 times [2021-10-08 14:21:41,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:41,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674747237] [2021-10-08 14:21:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:41,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 14:21:41,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:41,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674747237] [2021-10-08 14:21:41,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674747237] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 14:21:41,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607359031] [2021-10-08 14:21:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:41,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 14:21:41,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 14:21:41,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 14:21:41,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-08 14:21:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:41,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 14:21:41,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 14:21:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 14:21:41,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607359031] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:41,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 14:21:41,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-10-08 14:21:41,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664605809] [2021-10-08 14:21:41,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 14:21:41,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:41,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 14:21:41,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-08 14:21:41,667 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-10-08 14:21:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:41,701 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2021-10-08 14:21:41,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 14:21:41,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) Word has length 18 [2021-10-08 14:21:41,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:41,703 INFO L225 Difference]: With dead ends: 28 [2021-10-08 14:21:41,703 INFO L226 Difference]: Without dead ends: 28 [2021-10-08 14:21:41,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 32.0ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-08 14:21:41,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-08 14:21:41,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-08 14:21:41,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 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) [2021-10-08 14:21:41,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2021-10-08 14:21:41,709 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 18 [2021-10-08 14:21:41,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:41,710 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2021-10-08 14:21:41,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-10-08 14:21:41,711 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2021-10-08 14:21:41,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 14:21:41,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:41,712 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:21:41,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-08 14:21:41,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 14:21:41,926 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-08 14:21:41,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:41,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1471206620, now seen corresponding path program 1 times [2021-10-08 14:21:41,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:41,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105192117] [2021-10-08 14:21:41,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:41,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 14:21:42,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:42,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105192117] [2021-10-08 14:21:42,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105192117] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 14:21:42,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123088725] [2021-10-08 14:21:42,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:42,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 14:21:42,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 14:21:42,983 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 14:21:42,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-08 14:21:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:43,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 14:21:43,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 14:21:43,467 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-10-08 14:21:43,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 62 [2021-10-08 14:21:43,686 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 14:21:43,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 77 [2021-10-08 14:21:43,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 14:21:43,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123088725] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:43,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 14:21:43,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 15 [2021-10-08 14:21:43,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104928954] [2021-10-08 14:21:43,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 14:21:43,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:43,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 14:21:43,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-10-08 14:21:43,994 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-08 14:21:44,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:44,245 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-10-08 14:21:44,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 14:21:44,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) Word has length 19 [2021-10-08 14:21:44,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:44,247 INFO L225 Difference]: With dead ends: 33 [2021-10-08 14:21:44,247 INFO L226 Difference]: Without dead ends: 22 [2021-10-08 14:21:44,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 575.5ms TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:21:44,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-08 14:21:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-08 14:21:44,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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) [2021-10-08 14:21:44,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-10-08 14:21:44,251 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 19 [2021-10-08 14:21:44,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:44,252 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-10-08 14:21:44,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-08 14:21:44,252 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-10-08 14:21:44,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 14:21:44,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:21:44,253 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:21:44,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-08 14:21:44,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 14:21:44,465 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-08 14:21:44,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:21:44,466 INFO L82 PathProgramCache]: Analyzing trace with hash 58490504, now seen corresponding path program 2 times [2021-10-08 14:21:44,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:21:44,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186247017] [2021-10-08 14:21:44,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:21:44,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:21:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:21:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 14:21:45,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:21:45,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186247017] [2021-10-08 14:21:45,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186247017] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:21:45,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:21:45,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 14:21:45,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158008807] [2021-10-08 14:21:45,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 14:21:45,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:21:45,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 14:21:45,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 14:21:45,022 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-10-08 14:21:45,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:21:45,114 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2021-10-08 14:21:45,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 14:21:45,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) Word has length 19 [2021-10-08 14:21:45,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:21:45,116 INFO L225 Difference]: With dead ends: 21 [2021-10-08 14:21:45,117 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 14:21:45,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 14:21:45,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 14:21:45,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 14:21:45,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-08 14:21:45,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 14:21:45,118 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-08 14:21:45,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:21:45,119 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 14:21:45,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-10-08 14:21:45,119 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 14:21:45,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 14:21:45,122 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-08 14:21:45,122 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 14:21:45,123 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 14:21:45,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-08 14:21:45,128 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 14:21:45,128 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 14:21:45,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 02:21:45 BasicIcfg [2021-10-08 14:21:45,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 14:21:45,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-08 14:21:45,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-08 14:21:45,131 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-08 14:21:45,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:21:26" (3/4) ... [2021-10-08 14:21:45,135 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-08 14:21:45,143 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-08 14:21:45,144 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-08 14:21:45,153 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2021-10-08 14:21:45,153 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-08 14:21:45,154 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 14:21:45,154 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 14:21:45,252 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-08 14:21:45,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-08 14:21:45,253 INFO L168 Benchmark]: Toolchain (without parser) took 21034.57 ms. Allocated memory was 48.2 MB in the beginning and 146.8 MB in the end (delta: 98.6 MB). Free memory was 24.2 MB in the beginning and 61.2 MB in the end (delta: -37.0 MB). Peak memory consumption was 64.7 MB. Max. memory is 16.1 GB. [2021-10-08 14:21:45,254 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 48.2 MB. Free memory is still 28.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-08 14:21:45,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.96 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 23.7 MB in the beginning and 38.3 MB in the end (delta: -14.6 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-08 14:21:45,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.38 ms. Allocated memory is still 62.9 MB. Free memory was 38.1 MB in the beginning and 36.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-08 14:21:45,255 INFO L168 Benchmark]: Boogie Preprocessor took 50.72 ms. Allocated memory is still 62.9 MB. Free memory was 36.1 MB in the beginning and 34.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-08 14:21:45,256 INFO L168 Benchmark]: RCFGBuilder took 1233.69 ms. Allocated memory is still 62.9 MB. Free memory was 34.0 MB in the beginning and 29.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-10-08 14:21:45,256 INFO L168 Benchmark]: TraceAbstraction took 19124.73 ms. Allocated memory was 62.9 MB in the beginning and 146.8 MB in the end (delta: 83.9 MB). Free memory was 29.1 MB in the beginning and 67.4 MB in the end (delta: -38.4 MB). Peak memory consumption was 44.7 MB. Max. memory is 16.1 GB. [2021-10-08 14:21:45,257 INFO L168 Benchmark]: Witness Printer took 121.07 ms. Allocated memory is still 146.8 MB. Free memory was 67.4 MB in the beginning and 61.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-08 14:21:45,259 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 48.2 MB. Free memory is still 28.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 428.96 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 23.7 MB in the beginning and 38.3 MB in the end (delta: -14.6 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.38 ms. Allocated memory is still 62.9 MB. Free memory was 38.1 MB in the beginning and 36.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.72 ms. Allocated memory is still 62.9 MB. Free memory was 36.1 MB in the beginning and 34.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1233.69 ms. Allocated memory is still 62.9 MB. Free memory was 34.0 MB in the beginning and 29.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19124.73 ms. Allocated memory was 62.9 MB in the beginning and 146.8 MB in the end (delta: 83.9 MB). Free memory was 29.1 MB in the beginning and 67.4 MB in the end (delta: -38.4 MB). Peak memory consumption was 44.7 MB. Max. memory is 16.1 GB. * Witness Printer took 121.07 ms. Allocated memory is still 146.8 MB. Free memory was 67.4 MB in the beginning and 61.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14214.0ms, 239 PlacesBefore, 25 PlacesAfterwards, 256 TransitionsBefore, 22 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 8 FixpointIterations, 209 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 63 TrivialYvCompositions, 0 ConcurrentYvCompositions, 20 ChoiceCompositions, 303 TotalNumberOfCompositions, 203 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 192, positive: 170, positive conditional: 0, positive unconditional: 170, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 85, positive: 80, positive conditional: 0, positive unconditional: 80, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 85, positive: 80, positive conditional: 0, positive unconditional: 80, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 92, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 92, negative conditional: 0, negative unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 192, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 85, unknown conditional: 0, unknown unconditional: 85] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 96]: 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, 243 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 18979.9ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 10.9ms, AutomataDifference: 508.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14276.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 88 SDtfs, 110 SDslu, 73 SDs, 0 SdLazy, 97 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 155.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 759.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=4, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 40.0ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 89.1ms SsaConstructionTime, 946.0ms SatisfiabilityAnalysisTime, 2322.4ms InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 2090 SizeOfPredicates, 21 NumberOfNonLiveVariables, 484 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 19/21 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! [2021-10-08 14:21:45,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...