./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f37aa3f5f53d7516c3aab2329ab9f19add00a9b7f37383228b3b0ae48d55a761 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 17:01:11,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 17:01:11,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 17:01:11,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 17:01:11,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 17:01:11,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 17:01:11,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 17:01:11,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 17:01:11,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 17:01:11,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 17:01:11,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 17:01:11,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 17:01:11,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 17:01:11,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 17:01:11,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 17:01:11,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 17:01:11,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 17:01:11,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 17:01:11,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 17:01:11,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 17:01:11,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 17:01:11,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 17:01:11,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 17:01:11,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 17:01:11,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 17:01:11,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 17:01:11,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 17:01:11,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 17:01:11,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 17:01:11,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 17:01:11,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 17:01:11,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 17:01:11,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 17:01:11,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 17:01:11,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 17:01:11,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 17:01:11,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 17:01:11,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 17:01:11,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 17:01:11,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 17:01:11,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 17:01:11,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 17:01:11,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 17:01:11,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 17:01:11,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 17:01:11,787 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 17:01:11,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 17:01:11,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 17:01:11,788 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 17:01:11,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 17:01:11,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 17:01:11,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 17:01:11,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 17:01:11,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 17:01:11,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 17:01:11,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 17:01:11,789 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 17:01:11,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 17:01:11,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 17:01:11,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 17:01:11,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 17:01:11,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 17:01:11,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 17:01:11,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 17:01:11,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 17:01:11,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 17:01:11,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 17:01:11,791 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 17:01:11,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 17:01:11,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 17:01:11,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 17:01:11,791 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/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f37aa3f5f53d7516c3aab2329ab9f19add00a9b7f37383228b3b0ae48d55a761 [2021-11-02 17:01:11,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 17:01:12,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 17:01:12,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 17:01:12,017 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 17:01:12,019 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 17:01:12,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2021-11-02 17:01:12,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598c9ac8c/df07d155886048b0aeb406f8f138ad45/FLAGa32ed4a04 [2021-11-02 17:01:12,660 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 17:01:12,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2021-11-02 17:01:12,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598c9ac8c/df07d155886048b0aeb406f8f138ad45/FLAGa32ed4a04 [2021-11-02 17:01:13,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598c9ac8c/df07d155886048b0aeb406f8f138ad45 [2021-11-02 17:01:13,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 17:01:13,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 17:01:13,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 17:01:13,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 17:01:13,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 17:01:13,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 05:01:13" (1/1) ... [2021-11-02 17:01:13,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6443d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:01:13, skipping insertion in model container [2021-11-02 17:01:13,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 05:01:13" (1/1) ... [2021-11-02 17:01:13,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 17:01:13,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 17:01:13,882 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i[148417,148430] [2021-11-02 17:01:13,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 17:01:14,027 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 17:01:14,267 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i[148417,148430] [2021-11-02 17:01:14,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 17:01:14,357 INFO L208 MainTranslator]: Completed translation [2021-11-02 17:01:14,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:01:14 WrapperNode [2021-11-02 17:01:14,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 17:01:14,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 17:01:14,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 17:01:14,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 17:01:14,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:01:14" (1/1) ... [2021-11-02 17:01:14,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:01:14" (1/1) ... [2021-11-02 17:01:15,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 17:01:15,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 17:01:15,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 17:01:15,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 17:01:15,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:01:14" (1/1) ... [2021-11-02 17:01:15,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:01:14" (1/1) ... [2021-11-02 17:01:15,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:01:14" (1/1) ... [2021-11-02 17:01:15,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:01:14" (1/1) ... [2021-11-02 17:01:16,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:01:14" (1/1) ... [2021-11-02 17:01:16,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:01:14" (1/1) ... [2021-11-02 17:01:16,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:01:14" (1/1) ... [2021-11-02 17:01:16,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 17:01:16,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 17:01:16,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 17:01:16,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 17:01:16,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:01:14" (1/1) ... [2021-11-02 17:01:16,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 17:01:16,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:01:16,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 17:01:16,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 17:01:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 17:01:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 17:01:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 17:01:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 17:01:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 17:01:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 17:01:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 17:01:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 17:01:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 17:01:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 17:01:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 17:01:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 17:01:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 17:01:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 17:01:16,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 17:01:20,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 17:01:20,750 INFO L299 CfgBuilder]: Removed 7586 assume(true) statements. [2021-11-02 17:01:20,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 05:01:20 BoogieIcfgContainer [2021-11-02 17:01:20,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 17:01:20,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 17:01:20,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 17:01:20,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 17:01:20,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 05:01:13" (1/3) ... [2021-11-02 17:01:20,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3618d23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 05:01:20, skipping insertion in model container [2021-11-02 17:01:20,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:01:14" (2/3) ... [2021-11-02 17:01:20,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3618d23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 05:01:20, skipping insertion in model container [2021-11-02 17:01:20,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 05:01:20" (3/3) ... [2021-11-02 17:01:20,765 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2021-11-02 17:01:20,769 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 17:01:20,770 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-02 17:01:20,829 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 17:01:20,834 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 17:01:20,835 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-02 17:01:20,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 6878 states, 6865 states have (on average 1.3296431172614713) internal successors, (9128), 6877 states have internal predecessors, (9128), 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) [2021-11-02 17:01:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-02 17:01:20,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:01:20,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:01:20,937 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:01:20,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:01:20,942 INFO L85 PathProgramCache]: Analyzing trace with hash -179431811, now seen corresponding path program 1 times [2021-11-02 17:01:20,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:01:20,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420077702] [2021-11-02 17:01:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:01:20,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:01:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:01:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:01:21,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:01:21,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420077702] [2021-11-02 17:01:21,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420077702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:01:21,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:01:21,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:01:21,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679405430] [2021-11-02 17:01:21,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:01:21,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:01:21,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:01:21,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:01:21,323 INFO L87 Difference]: Start difference. First operand has 6878 states, 6865 states have (on average 1.3296431172614713) internal successors, (9128), 6877 states have internal predecessors, (9128), 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 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-11-02 17:01:22,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:01:24,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:01:28,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:01:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:01:51,099 INFO L93 Difference]: Finished difference Result 19997 states and 26541 transitions. [2021-11-02 17:01:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:01:51,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-11-02 17:01:51,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:01:51,172 INFO L225 Difference]: With dead ends: 19997 [2021-11-02 17:01:51,173 INFO L226 Difference]: Without dead ends: 13114 [2021-11-02 17:01:51,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:01:51,207 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8556 mSDsluCounter, 8626 mSDsCounter, 0 mSdLazyCounter, 17298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26260.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8556 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.22ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29090.48ms IncrementalHoareTripleChecker+Time [2021-11-02 17:01:51,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8556 Valid, 0 Invalid, 17300 Unknown, 0 Unchecked, 33.22ms Time], IncrementalHoareTripleChecker [2 Valid, 17298 Invalid, 0 Unknown, 0 Unchecked, 29090.48ms Time] [2021-11-02 17:01:51,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13114 states. [2021-11-02 17:01:51,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13114 to 13092. [2021-11-02 17:01:51,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13092 states, 13080 states have (on average 1.3134556574923548) internal successors, (17180), 13091 states have internal predecessors, (17180), 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) [2021-11-02 17:01:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13092 states to 13092 states and 17180 transitions. [2021-11-02 17:01:51,613 INFO L78 Accepts]: Start accepts. Automaton has 13092 states and 17180 transitions. Word has length 13 [2021-11-02 17:01:51,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:01:51,614 INFO L470 AbstractCegarLoop]: Abstraction has 13092 states and 17180 transitions. [2021-11-02 17:01:51,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-11-02 17:01:51,615 INFO L276 IsEmpty]: Start isEmpty. Operand 13092 states and 17180 transitions. [2021-11-02 17:01:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 17:01:51,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:01:51,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:01:51,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 17:01:51,622 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:01:51,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:01:51,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1960540172, now seen corresponding path program 1 times [2021-11-02 17:01:51,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:01:51,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992584273] [2021-11-02 17:01:51,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:01:51,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:01:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:01:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:01:51,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:01:51,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992584273] [2021-11-02 17:01:51,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992584273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:01:51,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:01:51,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:01:51,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328474784] [2021-11-02 17:01:51,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:01:51,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:01:51,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:01:51,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:01:51,774 INFO L87 Difference]: Start difference. First operand 13092 states and 17180 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-11-02 17:01:52,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:01:55,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:01:59,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:02:20,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:02:20,454 INFO L93 Difference]: Finished difference Result 35271 states and 46303 transitions. [2021-11-02 17:02:20,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:02:20,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 [2021-11-02 17:02:20,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:02:20,526 INFO L225 Difference]: With dead ends: 35271 [2021-11-02 17:02:20,527 INFO L226 Difference]: Without dead ends: 22182 [2021-11-02 17:02:20,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:02:20,554 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7970 mSDsluCounter, 6671 mSDsCounter, 0 mSdLazyCounter, 15414 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25329.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7970 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.10ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15414 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27746.27ms IncrementalHoareTripleChecker+Time [2021-11-02 17:02:20,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7970 Valid, 0 Invalid, 15418 Unknown, 0 Unchecked, 27.10ms Time], IncrementalHoareTripleChecker [3 Valid, 15414 Invalid, 1 Unknown, 0 Unchecked, 27746.27ms Time] [2021-11-02 17:02:20,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22182 states. [2021-11-02 17:02:21,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22182 to 22166. [2021-11-02 17:02:21,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22166 states, 22154 states have (on average 1.3140742078180012) internal successors, (29112), 22165 states have internal predecessors, (29112), 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) [2021-11-02 17:02:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22166 states to 22166 states and 29112 transitions. [2021-11-02 17:02:21,100 INFO L78 Accepts]: Start accepts. Automaton has 22166 states and 29112 transitions. Word has length 15 [2021-11-02 17:02:21,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:02:21,105 INFO L470 AbstractCegarLoop]: Abstraction has 22166 states and 29112 transitions. [2021-11-02 17:02:21,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-11-02 17:02:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 22166 states and 29112 transitions. [2021-11-02 17:02:21,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-02 17:02:21,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:02:21,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:02:21,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 17:02:21,108 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:02:21,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:02:21,111 INFO L85 PathProgramCache]: Analyzing trace with hash 143070602, now seen corresponding path program 1 times [2021-11-02 17:02:21,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:02:21,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361354128] [2021-11-02 17:02:21,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:02:21,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:02:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:02:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:02:21,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:02:21,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361354128] [2021-11-02 17:02:21,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361354128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:02:21,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:02:21,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 17:02:21,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736193595] [2021-11-02 17:02:21,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:02:21,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:02:21,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:02:21,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:02:21,210 INFO L87 Difference]: Start difference. First operand 22166 states and 29112 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 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) [2021-11-02 17:02:23,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:02:25,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:02:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:02:46,923 INFO L93 Difference]: Finished difference Result 60554 states and 79578 transitions. [2021-11-02 17:02:46,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:02:46,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 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 [2021-11-02 17:02:46,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:02:46,997 INFO L225 Difference]: With dead ends: 60554 [2021-11-02 17:02:46,997 INFO L226 Difference]: Without dead ends: 38391 [2021-11-02 17:02:47,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:02:47,032 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7355 mSDsluCounter, 6680 mSDsCounter, 0 mSdLazyCounter, 15340 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22751.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7355 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.65ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15340 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24929.89ms IncrementalHoareTripleChecker+Time [2021-11-02 17:02:47,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7355 Valid, 0 Invalid, 15343 Unknown, 0 Unchecked, 16.65ms Time], IncrementalHoareTripleChecker [1 Valid, 15340 Invalid, 2 Unknown, 0 Unchecked, 24929.89ms Time] [2021-11-02 17:02:47,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38391 states. [2021-11-02 17:02:47,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38391 to 38353. [2021-11-02 17:02:47,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38353 states, 38341 states have (on average 1.3154586474009546) internal successors, (50436), 38352 states have internal predecessors, (50436), 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) [2021-11-02 17:02:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38353 states to 38353 states and 50436 transitions. [2021-11-02 17:02:47,666 INFO L78 Accepts]: Start accepts. Automaton has 38353 states and 50436 transitions. Word has length 16 [2021-11-02 17:02:47,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:02:47,666 INFO L470 AbstractCegarLoop]: Abstraction has 38353 states and 50436 transitions. [2021-11-02 17:02:47,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 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) [2021-11-02 17:02:47,667 INFO L276 IsEmpty]: Start isEmpty. Operand 38353 states and 50436 transitions. [2021-11-02 17:02:47,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-02 17:02:47,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:02:47,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:02:47,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 17:02:47,669 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:02:47,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:02:47,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1587883540, now seen corresponding path program 1 times [2021-11-02 17:02:47,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:02:47,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972684299] [2021-11-02 17:02:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:02:47,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:02:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:02:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:02:47,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:02:47,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972684299] [2021-11-02 17:02:47,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972684299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:02:47,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:02:47,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:02:47,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251304988] [2021-11-02 17:02:47,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:02:47,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:02:47,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:02:47,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:02:47,764 INFO L87 Difference]: Start difference. First operand 38353 states and 50436 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-02 17:02:49,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:02:51,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:02:53,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:03:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:03:13,807 INFO L93 Difference]: Finished difference Result 76721 states and 100895 transitions. [2021-11-02 17:03:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:03:13,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-02 17:03:13,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:03:14,050 INFO L225 Difference]: With dead ends: 76721 [2021-11-02 17:03:14,050 INFO L226 Difference]: Without dead ends: 38371 [2021-11-02 17:03:14,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:03:14,097 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 8638 mSDsCounter, 0 mSdLazyCounter, 17287 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23353.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17287 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25246.43ms IncrementalHoareTripleChecker+Time [2021-11-02 17:03:14,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 17289 Unknown, 0 Unchecked, 17.86ms Time], IncrementalHoareTripleChecker [0 Valid, 17287 Invalid, 2 Unknown, 0 Unchecked, 25246.43ms Time] [2021-11-02 17:03:14,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38371 states. [2021-11-02 17:03:14,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38371 to 38355. [2021-11-02 17:03:14,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38355 states, 38343 states have (on average 1.3154421928383278) internal successors, (50438), 38354 states have internal predecessors, (50438), 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) [2021-11-02 17:03:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38355 states to 38355 states and 50438 transitions. [2021-11-02 17:03:14,695 INFO L78 Accepts]: Start accepts. Automaton has 38355 states and 50438 transitions. Word has length 23 [2021-11-02 17:03:14,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:03:14,695 INFO L470 AbstractCegarLoop]: Abstraction has 38355 states and 50438 transitions. [2021-11-02 17:03:14,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-02 17:03:14,696 INFO L276 IsEmpty]: Start isEmpty. Operand 38355 states and 50438 transitions. [2021-11-02 17:03:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-02 17:03:14,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:03:14,703 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:03:14,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 17:03:14,703 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:03:14,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:03:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash -345508526, now seen corresponding path program 1 times [2021-11-02 17:03:14,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:03:14,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056020615] [2021-11-02 17:03:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:03:14,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:03:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:03:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:03:14,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:03:14,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056020615] [2021-11-02 17:03:14,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056020615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:03:14,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:03:14,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:03:14,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027440737] [2021-11-02 17:03:14,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:03:14,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:03:14,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:03:14,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:03:14,785 INFO L87 Difference]: Start difference. First operand 38355 states and 50438 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) [2021-11-02 17:03:17,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:03:19,781 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:03:22,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:03:45,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:03:45,704 INFO L93 Difference]: Finished difference Result 87897 states and 115942 transitions. [2021-11-02 17:03:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:03:45,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) Word has length 27 [2021-11-02 17:03:45,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:03:45,817 INFO L225 Difference]: With dead ends: 87897 [2021-11-02 17:03:45,818 INFO L226 Difference]: Without dead ends: 49545 [2021-11-02 17:03:45,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:03:45,873 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3421 mSDsluCounter, 8586 mSDsCounter, 0 mSdLazyCounter, 17401 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27569.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3421 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.25ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17401 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29823.64ms IncrementalHoareTripleChecker+Time [2021-11-02 17:03:45,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3421 Valid, 0 Invalid, 17405 Unknown, 0 Unchecked, 19.25ms Time], IncrementalHoareTripleChecker [2 Valid, 17401 Invalid, 2 Unknown, 0 Unchecked, 29823.64ms Time] [2021-11-02 17:03:45,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49545 states. [2021-11-02 17:03:46,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49545 to 49507. [2021-11-02 17:03:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49507 states, 49495 states have (on average 1.3227194666127893) internal successors, (65468), 49506 states have internal predecessors, (65468), 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) [2021-11-02 17:03:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49507 states to 49507 states and 65468 transitions. [2021-11-02 17:03:46,876 INFO L78 Accepts]: Start accepts. Automaton has 49507 states and 65468 transitions. Word has length 27 [2021-11-02 17:03:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:03:46,877 INFO L470 AbstractCegarLoop]: Abstraction has 49507 states and 65468 transitions. [2021-11-02 17:03:46,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) [2021-11-02 17:03:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 49507 states and 65468 transitions. [2021-11-02 17:03:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-02 17:03:46,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:03:46,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:03:46,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 17:03:46,878 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:03:46,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:03:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1974321421, now seen corresponding path program 1 times [2021-11-02 17:03:46,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:03:46,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248016462] [2021-11-02 17:03:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:03:46,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:03:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:03:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:03:46,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:03:46,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248016462] [2021-11-02 17:03:46,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248016462] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:03:46,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144443505] [2021-11-02 17:03:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:03:46,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:03:46,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:03:46,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:03:46,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 17:03:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:03:47,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 17:03:47,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:03:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:03:47,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:03:47,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144443505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:03:47,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:03:47,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:03:47,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754787720] [2021-11-02 17:03:47,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:03:47,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:03:47,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:03:47,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:03:47,451 INFO L87 Difference]: Start difference. First operand 49507 states and 65468 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) [2021-11-02 17:03:54,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:04:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:04:14,755 INFO L93 Difference]: Finished difference Result 101423 states and 134097 transitions. [2021-11-02 17:04:14,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:04:14,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) Word has length 27 [2021-11-02 17:04:14,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:04:14,869 INFO L225 Difference]: With dead ends: 101423 [2021-11-02 17:04:14,869 INFO L226 Difference]: Without dead ends: 51919 [2021-11-02 17:04:14,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.84ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:04:14,938 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 787 mSDsluCounter, 8636 mSDsCounter, 0 mSdLazyCounter, 17290 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24197.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.33ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26272.47ms IncrementalHoareTripleChecker+Time [2021-11-02 17:04:14,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 0 Invalid, 17292 Unknown, 0 Unchecked, 20.33ms Time], IncrementalHoareTripleChecker [2 Valid, 17290 Invalid, 0 Unknown, 0 Unchecked, 26272.47ms Time] [2021-11-02 17:04:14,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51919 states. [2021-11-02 17:04:15,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51919 to 49515. [2021-11-02 17:04:15,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49515 states, 49503 states have (on average 1.3226673130921358) internal successors, (65476), 49514 states have internal predecessors, (65476), 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) [2021-11-02 17:04:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49515 states to 49515 states and 65476 transitions. [2021-11-02 17:04:15,929 INFO L78 Accepts]: Start accepts. Automaton has 49515 states and 65476 transitions. Word has length 27 [2021-11-02 17:04:15,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:04:15,930 INFO L470 AbstractCegarLoop]: Abstraction has 49515 states and 65476 transitions. [2021-11-02 17:04:15,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) [2021-11-02 17:04:15,930 INFO L276 IsEmpty]: Start isEmpty. Operand 49515 states and 65476 transitions. [2021-11-02 17:04:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-02 17:04:15,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:04:15,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:04:15,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 17:04:16,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-02 17:04:16,134 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:04:16,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:04:16,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1290763118, now seen corresponding path program 1 times [2021-11-02 17:04:16,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:04:16,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062791346] [2021-11-02 17:04:16,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:04:16,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:04:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:04:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:04:16,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:04:16,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062791346] [2021-11-02 17:04:16,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062791346] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:04:16,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226231682] [2021-11-02 17:04:16,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:04:16,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:04:16,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:04:16,224 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:04:16,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 17:04:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:04:16,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:04:16,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:04:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:04:16,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:04:16,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226231682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:04:16,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:04:16,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:04:16,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753776732] [2021-11-02 17:04:16,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:04:16,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:04:16,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:04:16,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:04:16,864 INFO L87 Difference]: Start difference. First operand 49515 states and 65476 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-02 17:04:21,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:04:23,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:04:25,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:04:50,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:04:50,652 INFO L93 Difference]: Finished difference Result 146127 states and 193262 transitions. [2021-11-02 17:04:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:04:50,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-11-02 17:04:50,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:04:50,870 INFO L225 Difference]: With dead ends: 146127 [2021-11-02 17:04:50,870 INFO L226 Difference]: Without dead ends: 96615 [2021-11-02 17:04:50,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.57ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:04:50,936 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8636 mSDsluCounter, 7854 mSDsCounter, 0 mSdLazyCounter, 17862 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29309.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8636 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17862 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32065.48ms IncrementalHoareTripleChecker+Time [2021-11-02 17:04:50,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8636 Valid, 0 Invalid, 17864 Unknown, 0 Unchecked, 22.44ms Time], IncrementalHoareTripleChecker [1 Valid, 17862 Invalid, 1 Unknown, 0 Unchecked, 32065.48ms Time] [2021-11-02 17:04:51,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96615 states. [2021-11-02 17:04:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96615 to 51919. [2021-11-02 17:04:52,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51919 states, 51907 states have (on average 1.3221338162482903) internal successors, (68628), 51918 states have internal predecessors, (68628), 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) [2021-11-02 17:04:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51919 states to 51919 states and 68628 transitions. [2021-11-02 17:04:52,522 INFO L78 Accepts]: Start accepts. Automaton has 51919 states and 68628 transitions. Word has length 28 [2021-11-02 17:04:52,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:04:52,522 INFO L470 AbstractCegarLoop]: Abstraction has 51919 states and 68628 transitions. [2021-11-02 17:04:52,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-02 17:04:52,522 INFO L276 IsEmpty]: Start isEmpty. Operand 51919 states and 68628 transitions. [2021-11-02 17:04:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 17:04:52,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:04:52,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:04:52,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 17:04:52,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-02 17:04:52,725 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:04:52,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:04:52,726 INFO L85 PathProgramCache]: Analyzing trace with hash 630789130, now seen corresponding path program 1 times [2021-11-02 17:04:52,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:04:52,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113892992] [2021-11-02 17:04:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:04:52,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:04:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:04:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:04:52,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:04:52,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113892992] [2021-11-02 17:04:52,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113892992] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:04:52,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191954313] [2021-11-02 17:04:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:04:52,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:04:52,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:04:52,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:04:52,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 17:04:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:04:53,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:04:53,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:04:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:04:53,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:04:53,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191954313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:04:53,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:04:53,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:04:53,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444404461] [2021-11-02 17:04:53,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:04:53,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:04:53,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:04:53,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:04:53,245 INFO L87 Difference]: Start difference. First operand 51919 states and 68628 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-11-02 17:04:57,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:05:22,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:05:22,492 INFO L93 Difference]: Finished difference Result 71479 states and 94396 transitions. [2021-11-02 17:05:22,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:05:22,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-11-02 17:05:22,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:05:22,620 INFO L225 Difference]: With dead ends: 71479 [2021-11-02 17:05:22,620 INFO L226 Difference]: Without dead ends: 71467 [2021-11-02 17:05:22,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.05ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:05:22,646 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8001 mSDsluCounter, 8637 mSDsCounter, 0 mSdLazyCounter, 17297 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25275.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8001 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.05ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17297 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27877.40ms IncrementalHoareTripleChecker+Time [2021-11-02 17:05:22,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8001 Valid, 0 Invalid, 17300 Unknown, 0 Unchecked, 20.05ms Time], IncrementalHoareTripleChecker [2 Valid, 17297 Invalid, 1 Unknown, 0 Unchecked, 27877.40ms Time] [2021-11-02 17:05:22,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71467 states. [2021-11-02 17:05:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71467 to 51919. [2021-11-02 17:05:23,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51919 states, 51907 states have (on average 1.3220952857996031) internal successors, (68626), 51918 states have internal predecessors, (68626), 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) [2021-11-02 17:05:23,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51919 states to 51919 states and 68626 transitions. [2021-11-02 17:05:23,993 INFO L78 Accepts]: Start accepts. Automaton has 51919 states and 68626 transitions. Word has length 33 [2021-11-02 17:05:23,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:05:23,994 INFO L470 AbstractCegarLoop]: Abstraction has 51919 states and 68626 transitions. [2021-11-02 17:05:23,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-11-02 17:05:23,994 INFO L276 IsEmpty]: Start isEmpty. Operand 51919 states and 68626 transitions. [2021-11-02 17:05:23,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 17:05:23,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:05:23,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:05:24,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 17:05:24,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:05:24,211 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:05:24,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:05:24,212 INFO L85 PathProgramCache]: Analyzing trace with hash 630848712, now seen corresponding path program 1 times [2021-11-02 17:05:24,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:05:24,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685954156] [2021-11-02 17:05:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:05:24,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:05:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:05:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:05:24,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:05:24,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685954156] [2021-11-02 17:05:24,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685954156] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:05:24,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126354941] [2021-11-02 17:05:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:05:24,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:05:24,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:05:24,275 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:05:24,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 17:05:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:05:24,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:05:24,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:05:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:05:24,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:05:24,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126354941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:05:24,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:05:24,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:05:24,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307128214] [2021-11-02 17:05:24,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:05:24,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:05:24,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:05:24,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:05:24,757 INFO L87 Difference]: Start difference. First operand 51919 states and 68626 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-11-02 17:05:27,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:05:40,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:05:40,802 INFO L93 Difference]: Finished difference Result 51919 states and 68626 transitions. [2021-11-02 17:05:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:05:40,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-11-02 17:05:40,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:05:40,881 INFO L225 Difference]: With dead ends: 51919 [2021-11-02 17:05:40,882 INFO L226 Difference]: Without dead ends: 51917 [2021-11-02 17:05:40,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.02ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:05:40,906 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8613 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8645 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13649.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8613 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15124.82ms IncrementalHoareTripleChecker+Time [2021-11-02 17:05:40,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8613 Valid, 0 Invalid, 8645 Unknown, 0 Unchecked, 8.43ms Time], IncrementalHoareTripleChecker [0 Valid, 8645 Invalid, 0 Unknown, 0 Unchecked, 15124.82ms Time] [2021-11-02 17:05:40,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51917 states. [2021-11-02 17:05:42,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51917 to 51917. [2021-11-02 17:05:42,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51917 states, 51906 states have (on average 1.322082225561592) internal successors, (68624), 51916 states have internal predecessors, (68624), 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) [2021-11-02 17:05:42,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51917 states to 51917 states and 68624 transitions. [2021-11-02 17:05:42,157 INFO L78 Accepts]: Start accepts. Automaton has 51917 states and 68624 transitions. Word has length 33 [2021-11-02 17:05:42,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:05:42,158 INFO L470 AbstractCegarLoop]: Abstraction has 51917 states and 68624 transitions. [2021-11-02 17:05:42,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-11-02 17:05:42,158 INFO L276 IsEmpty]: Start isEmpty. Operand 51917 states and 68624 transitions. [2021-11-02 17:05:42,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 17:05:42,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:05:42,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:05:42,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 17:05:42,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:05:42,362 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:05:42,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:05:42,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1918506258, now seen corresponding path program 1 times [2021-11-02 17:05:42,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:05:42,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743433292] [2021-11-02 17:05:42,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:05:42,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:05:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:05:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:05:42,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:05:42,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743433292] [2021-11-02 17:05:42,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743433292] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:05:42,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768396261] [2021-11-02 17:05:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:05:42,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:05:42,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:05:42,415 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:05:42,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 17:05:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:05:42,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:05:42,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:05:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:05:42,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:05:42,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768396261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:05:42,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:05:42,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:05:42,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385555386] [2021-11-02 17:05:42,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:05:42,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:05:42,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:05:42,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:05:42,895 INFO L87 Difference]: Start difference. First operand 51917 states and 68624 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-11-02 17:05:58,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:05:58,731 INFO L93 Difference]: Finished difference Result 51917 states and 68624 transitions. [2021-11-02 17:05:58,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:05:58,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2021-11-02 17:05:58,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:05:58,823 INFO L225 Difference]: With dead ends: 51917 [2021-11-02 17:05:58,823 INFO L226 Difference]: Without dead ends: 51915 [2021-11-02 17:05:58,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.59ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:05:58,845 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8610 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8643 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13345.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8610 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.26ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14718.70ms IncrementalHoareTripleChecker+Time [2021-11-02 17:05:58,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8610 Valid, 0 Invalid, 8643 Unknown, 0 Unchecked, 8.26ms Time], IncrementalHoareTripleChecker [0 Valid, 8643 Invalid, 0 Unknown, 0 Unchecked, 14718.70ms Time] [2021-11-02 17:05:58,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51915 states. [2021-11-02 17:06:00,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51915 to 51915. [2021-11-02 17:06:00,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51915 states, 51905 states have (on average 1.3220691648203449) internal successors, (68622), 51914 states have internal predecessors, (68622), 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) [2021-11-02 17:06:00,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51915 states to 51915 states and 68622 transitions. [2021-11-02 17:06:00,257 INFO L78 Accepts]: Start accepts. Automaton has 51915 states and 68622 transitions. Word has length 34 [2021-11-02 17:06:00,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:06:00,257 INFO L470 AbstractCegarLoop]: Abstraction has 51915 states and 68622 transitions. [2021-11-02 17:06:00,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-11-02 17:06:00,257 INFO L276 IsEmpty]: Start isEmpty. Operand 51915 states and 68622 transitions. [2021-11-02 17:06:00,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-02 17:06:00,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:06:00,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:06:00,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 17:06:00,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 17:06:00,464 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:06:00,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:06:00,467 INFO L85 PathProgramCache]: Analyzing trace with hash 655868306, now seen corresponding path program 1 times [2021-11-02 17:06:00,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:06:00,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775958935] [2021-11-02 17:06:00,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:06:00,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:06:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:06:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:06:00,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:06:00,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775958935] [2021-11-02 17:06:00,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775958935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:06:00,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091230465] [2021-11-02 17:06:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:06:00,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:06:00,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:06:00,540 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:06:00,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 17:06:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:06:00,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:06:00,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:06:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:06:00,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:06:00,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091230465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:06:00,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:06:00,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:06:00,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945536393] [2021-11-02 17:06:00,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:06:00,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:06:00,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:06:00,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:06:00,997 INFO L87 Difference]: Start difference. First operand 51915 states and 68622 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2021-11-02 17:06:05,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:06:17,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:06:17,085 INFO L93 Difference]: Finished difference Result 51915 states and 68622 transitions. [2021-11-02 17:06:17,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:06:17,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 35 [2021-11-02 17:06:17,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:06:17,173 INFO L225 Difference]: With dead ends: 51915 [2021-11-02 17:06:17,173 INFO L226 Difference]: Without dead ends: 51913 [2021-11-02 17:06:17,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.95ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:06:17,191 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8607 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8641 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13307.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8607 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14711.32ms IncrementalHoareTripleChecker+Time [2021-11-02 17:06:17,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8607 Valid, 0 Invalid, 8641 Unknown, 0 Unchecked, 8.37ms Time], IncrementalHoareTripleChecker [0 Valid, 8641 Invalid, 0 Unknown, 0 Unchecked, 14711.32ms Time] [2021-11-02 17:06:17,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51913 states. [2021-11-02 17:06:18,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51913 to 51913. [2021-11-02 17:06:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51913 states, 51904 states have (on average 1.3220561035758323) internal successors, (68620), 51912 states have internal predecessors, (68620), 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) [2021-11-02 17:06:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51913 states to 51913 states and 68620 transitions. [2021-11-02 17:06:18,673 INFO L78 Accepts]: Start accepts. Automaton has 51913 states and 68620 transitions. Word has length 35 [2021-11-02 17:06:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:06:18,674 INFO L470 AbstractCegarLoop]: Abstraction has 51913 states and 68620 transitions. [2021-11-02 17:06:18,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2021-11-02 17:06:18,674 INFO L276 IsEmpty]: Start isEmpty. Operand 51913 states and 68620 transitions. [2021-11-02 17:06:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-02 17:06:18,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:06:18,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:06:18,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 17:06:18,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:06:18,876 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:06:18,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:06:18,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1142898824, now seen corresponding path program 1 times [2021-11-02 17:06:18,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:06:18,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984811871] [2021-11-02 17:06:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:06:18,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:06:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:06:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:06:18,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:06:18,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984811871] [2021-11-02 17:06:18,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984811871] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:06:18,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630990607] [2021-11-02 17:06:18,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:06:18,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:06:18,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:06:18,932 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:06:18,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 17:06:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:06:19,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 1275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:06:19,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:06:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:06:19,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:06:19,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630990607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:06:19,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:06:19,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:06:19,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045174447] [2021-11-02 17:06:19,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:06:19,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:06:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:06:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:06:19,430 INFO L87 Difference]: Start difference. First operand 51913 states and 68620 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 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) [2021-11-02 17:06:24,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:06:50,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:06:50,088 INFO L93 Difference]: Finished difference Result 102535 states and 135619 transitions. [2021-11-02 17:06:50,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:06:50,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 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) Word has length 36 [2021-11-02 17:06:50,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:06:50,321 INFO L225 Difference]: With dead ends: 102535 [2021-11-02 17:06:50,321 INFO L226 Difference]: Without dead ends: 102511 [2021-11-02 17:06:50,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.61ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:06:50,362 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7924 mSDsluCounter, 8597 mSDsCounter, 0 mSdLazyCounter, 17255 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25617.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7924 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.39ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 17255 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28318.34ms IncrementalHoareTripleChecker+Time [2021-11-02 17:06:50,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7924 Valid, 0 Invalid, 17268 Unknown, 0 Unchecked, 20.39ms Time], IncrementalHoareTripleChecker [12 Valid, 17255 Invalid, 1 Unknown, 0 Unchecked, 28318.34ms Time] [2021-11-02 17:06:50,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102511 states. [2021-11-02 17:06:53,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102511 to 102511. [2021-11-02 17:06:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102511 states, 102502 states have (on average 1.3224132212054398) internal successors, (135550), 102510 states have internal predecessors, (135550), 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) [2021-11-02 17:06:53,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102511 states to 102511 states and 135550 transitions. [2021-11-02 17:06:53,545 INFO L78 Accepts]: Start accepts. Automaton has 102511 states and 135550 transitions. Word has length 36 [2021-11-02 17:06:53,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:06:53,546 INFO L470 AbstractCegarLoop]: Abstraction has 102511 states and 135550 transitions. [2021-11-02 17:06:53,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 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) [2021-11-02 17:06:53,546 INFO L276 IsEmpty]: Start isEmpty. Operand 102511 states and 135550 transitions. [2021-11-02 17:06:53,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 17:06:53,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:06:53,550 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:06:53,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 17:06:53,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:06:53,754 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:06:53,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:06:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash 3236238, now seen corresponding path program 1 times [2021-11-02 17:06:53,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:06:53,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951926971] [2021-11-02 17:06:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:06:53,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:06:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:06:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:06:54,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:06:54,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951926971] [2021-11-02 17:06:54,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951926971] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:06:54,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484167970] [2021-11-02 17:06:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:06:54,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:06:54,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:06:54,039 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:06:54,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 17:06:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:06:54,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 17:06:54,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:06:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:06:54,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:06:54,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484167970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:06:54,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:06:54,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:06:54,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870736526] [2021-11-02 17:06:54,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:06:54,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:06:54,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:06:54,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:06:54,544 INFO L87 Difference]: Start difference. First operand 102511 states and 135550 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-02 17:07:06,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:08,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:31,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:07:31,097 INFO L93 Difference]: Finished difference Result 251117 states and 332119 transitions. [2021-11-02 17:07:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:07:31,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-02 17:07:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:07:31,379 INFO L225 Difference]: With dead ends: 251117 [2021-11-02 17:07:31,380 INFO L226 Difference]: Without dead ends: 148609 [2021-11-02 17:07:31,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.47ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:07:31,498 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8593 mSDsluCounter, 8587 mSDsCounter, 0 mSdLazyCounter, 17239 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29232.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8593 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.75ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 17239 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32009.68ms IncrementalHoareTripleChecker+Time [2021-11-02 17:07:31,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8593 Valid, 0 Invalid, 17251 Unknown, 0 Unchecked, 22.75ms Time], IncrementalHoareTripleChecker [11 Valid, 17239 Invalid, 1 Unknown, 0 Unchecked, 32009.68ms Time] [2021-11-02 17:07:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148609 states. [2021-11-02 17:07:35,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148609 to 148593. [2021-11-02 17:07:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148593 states, 148584 states have (on average 1.322531362730846) internal successors, (196507), 148592 states have internal predecessors, (196507), 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) [2021-11-02 17:07:36,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148593 states to 148593 states and 196507 transitions. [2021-11-02 17:07:36,200 INFO L78 Accepts]: Start accepts. Automaton has 148593 states and 196507 transitions. Word has length 46 [2021-11-02 17:07:36,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:07:36,200 INFO L470 AbstractCegarLoop]: Abstraction has 148593 states and 196507 transitions. [2021-11-02 17:07:36,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-02 17:07:36,201 INFO L276 IsEmpty]: Start isEmpty. Operand 148593 states and 196507 transitions. [2021-11-02 17:07:36,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 17:07:36,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:07:36,204 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:07:36,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-02 17:07:36,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-02 17:07:36,422 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:07:36,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:07:36,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1217421971, now seen corresponding path program 1 times [2021-11-02 17:07:36,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:07:36,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712615985] [2021-11-02 17:07:36,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:07:36,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:07:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:07:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:07:36,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:07:36,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712615985] [2021-11-02 17:07:36,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712615985] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:07:36,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564716429] [2021-11-02 17:07:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:07:36,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:07:36,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:07:36,497 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:07:36,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 17:07:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:07:36,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:07:36,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:07:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 17:07:37,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:07:37,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564716429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:07:37,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:07:37,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:07:37,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645554044] [2021-11-02 17:07:37,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:07:37,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:07:37,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:07:37,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:07:37,009 INFO L87 Difference]: Start difference. First operand 148593 states and 196507 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-02 17:07:42,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:44,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:46,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:08:08,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:08:08,081 INFO L93 Difference]: Finished difference Result 148593 states and 196507 transitions. [2021-11-02 17:08:08,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:08:08,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 47 [2021-11-02 17:08:08,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:08:08,428 INFO L225 Difference]: With dead ends: 148593 [2021-11-02 17:08:08,428 INFO L226 Difference]: Without dead ends: 148585 [2021-11-02 17:08:08,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.02ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:08:08,474 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 8597 mSDsCounter, 0 mSdLazyCounter, 17242 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25389.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.00ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17242 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27493.57ms IncrementalHoareTripleChecker+Time [2021-11-02 17:08:08,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 17250 Unknown, 0 Unchecked, 18.00ms Time], IncrementalHoareTripleChecker [6 Valid, 17242 Invalid, 2 Unknown, 0 Unchecked, 27493.57ms Time] [2021-11-02 17:08:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148585 states. [2021-11-02 17:08:12,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148585 to 148585. [2021-11-02 17:08:13,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148585 states, 148580 states have (on average 1.3223246735765244) internal successors, (196471), 148584 states have internal predecessors, (196471), 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) [2021-11-02 17:08:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148585 states to 148585 states and 196471 transitions. [2021-11-02 17:08:13,550 INFO L78 Accepts]: Start accepts. Automaton has 148585 states and 196471 transitions. Word has length 47 [2021-11-02 17:08:13,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:08:13,550 INFO L470 AbstractCegarLoop]: Abstraction has 148585 states and 196471 transitions. [2021-11-02 17:08:13,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-02 17:08:13,550 INFO L276 IsEmpty]: Start isEmpty. Operand 148585 states and 196471 transitions. [2021-11-02 17:08:13,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 17:08:13,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:08:13,556 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:08:13,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 17:08:13,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-02 17:08:13,764 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 17:08:13,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:08:13,764 INFO L85 PathProgramCache]: Analyzing trace with hash 620640536, now seen corresponding path program 1 times [2021-11-02 17:08:13,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:08:13,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95264193] [2021-11-02 17:08:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:08:13,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:08:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:08:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 17:08:13,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:08:13,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95264193] [2021-11-02 17:08:13,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95264193] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:08:13,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404475895] [2021-11-02 17:08:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:08:13,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:08:13,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:08:13,827 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 17:08:13,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 17:08:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:08:14,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 17:08:14,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:08:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:08:14,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:08:14,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404475895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:08:14,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:08:14,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 17:08:14,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814463645] [2021-11-02 17:08:14,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:08:14,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:08:14,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:08:14,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:08:14,340 INFO L87 Difference]: Start difference. First operand 148585 states and 196471 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2021-11-02 17:08:17,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:08:21,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:08:43,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:08:43,885 INFO L93 Difference]: Finished difference Result 333669 states and 442436 transitions. [2021-11-02 17:08:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:08:43,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2021-11-02 17:08:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:08:44,387 INFO L225 Difference]: With dead ends: 333669 [2021-11-02 17:08:44,388 INFO L226 Difference]: Without dead ends: 185087 [2021-11-02 17:08:44,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.51ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:08:44,545 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5387 mSDsluCounter, 6637 mSDsCounter, 0 mSdLazyCounter, 15332 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21737.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5387 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.43ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 15332 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23831.75ms IncrementalHoareTripleChecker+Time [2021-11-02 17:08:44,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5387 Valid, 0 Invalid, 15361 Unknown, 0 Unchecked, 17.43ms Time], IncrementalHoareTripleChecker [28 Valid, 15332 Invalid, 1 Unknown, 0 Unchecked, 23831.75ms Time] [2021-11-02 17:08:44,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185087 states.