./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.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 f5287aa284221e5fd9453b6be2206814d99b5890aba823bfb498c43964518ada --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 08:18:19,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 08:18:19,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 08:18:19,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 08:18:19,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 08:18:19,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 08:18:19,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 08:18:19,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 08:18:19,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 08:18:19,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 08:18:19,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 08:18:19,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 08:18:19,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 08:18:19,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 08:18:19,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 08:18:19,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 08:18:19,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 08:18:19,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 08:18:19,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 08:18:19,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 08:18:19,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 08:18:19,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 08:18:19,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 08:18:19,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 08:18:19,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 08:18:19,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 08:18:19,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 08:18:19,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 08:18:19,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 08:18:19,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 08:18:19,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 08:18:19,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 08:18:19,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 08:18:19,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 08:18:19,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 08:18:19,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 08:18:19,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 08:18:19,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 08:18:19,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 08:18:19,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 08:18:19,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 08:18:19,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 08:18:19,584 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 08:18:19,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 08:18:19,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 08:18:19,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 08:18:19,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 08:18:19,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 08:18:19,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 08:18:19,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 08:18:19,587 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 08:18:19,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 08:18:19,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 08:18:19,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 08:18:19,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 08:18:19,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 08:18:19,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 08:18:19,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 08:18:19,589 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 08:18:19,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 08:18:19,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 08:18:19,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 08:18:19,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 08:18:19,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 08:18:19,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 08:18:19,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 08:18:19,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 08:18:19,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 08:18:19,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 08:18:19,591 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 08:18:19,592 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 08:18:19,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 08:18:19,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 08:18:19,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5287aa284221e5fd9453b6be2206814d99b5890aba823bfb498c43964518ada [2021-12-18 08:18:19,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 08:18:19,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 08:18:19,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 08:18:19,811 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 08:18:19,812 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 08:18:19,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i [2021-12-18 08:18:19,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ed6c1682/5c0e00f952524c30b36f7601850b7656/FLAG44cb1f04f [2021-12-18 08:18:20,558 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 08:18:20,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i [2021-12-18 08:18:20,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ed6c1682/5c0e00f952524c30b36f7601850b7656/FLAG44cb1f04f [2021-12-18 08:18:20,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ed6c1682/5c0e00f952524c30b36f7601850b7656 [2021-12-18 08:18:20,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 08:18:20,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 08:18:20,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 08:18:20,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 08:18:20,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 08:18:20,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:18:20" (1/1) ... [2021-12-18 08:18:20,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf2fe29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:18:20, skipping insertion in model container [2021-12-18 08:18:20,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:18:20" (1/1) ... [2021-12-18 08:18:20,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 08:18:21,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 08:18:22,450 WARN L230 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i[274049,274062] [2021-12-18 08:18:22,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 08:18:22,532 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 08:18:22,833 WARN L230 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i[274049,274062] [2021-12-18 08:18:22,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 08:18:22,992 INFO L208 MainTranslator]: Completed translation [2021-12-18 08:18:22,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:18:22 WrapperNode [2021-12-18 08:18:22,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 08:18:22,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 08:18:22,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 08:18:22,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 08:18:23,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:18:22" (1/1) ... [2021-12-18 08:18:23,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:18:22" (1/1) ... [2021-12-18 08:18:23,224 INFO L137 Inliner]: procedures = 278, calls = 1469, calls flagged for inlining = 144, calls inlined = 134, statements flattened = 3585 [2021-12-18 08:18:23,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 08:18:23,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 08:18:23,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 08:18:23,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 08:18:23,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:18:22" (1/1) ... [2021-12-18 08:18:23,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:18:22" (1/1) ... [2021-12-18 08:18:23,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:18:22" (1/1) ... [2021-12-18 08:18:23,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:18:22" (1/1) ... [2021-12-18 08:18:23,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:18:22" (1/1) ... [2021-12-18 08:18:23,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:18:22" (1/1) ... [2021-12-18 08:18:23,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:18:22" (1/1) ... [2021-12-18 08:18:23,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 08:18:23,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 08:18:23,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 08:18:23,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 08:18:23,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:18:22" (1/1) ... [2021-12-18 08:18:23,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 08:18:23,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:18:23,456 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) [2021-12-18 08:18:23,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_3 [2021-12-18 08:18:23,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_3 [2021-12-18 08:18:23,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 08:18:23,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 08:18:23,499 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-18 08:18:23,499 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-18 08:18:23,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 08:18:23,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 08:18:23,499 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_get_stats [2021-12-18 08:18:23,499 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_get_stats [2021-12-18 08:18:23,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 08:18:23,500 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 08:18:23,500 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-12-18 08:18:23,500 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-12-18 08:18:23,500 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-18 08:18:23,500 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-18 08:18:23,500 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-12-18 08:18:23,501 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-12-18 08:18:23,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-18 08:18:23,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-18 08:18:23,501 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_mdio_write [2021-12-18 08:18:23,501 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_mdio_write [2021-12-18 08:18:23,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 08:18:23,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 08:18:23,502 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_read_mib [2021-12-18 08:18:23,502 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_read_mib [2021-12-18 08:18:23,502 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-18 08:18:23,502 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-18 08:18:23,502 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_interrupt [2021-12-18 08:18:23,502 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_interrupt [2021-12-18 08:18:23,502 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-12-18 08:18:23,503 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-12-18 08:18:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 08:18:23,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 08:18:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-18 08:18:23,503 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-18 08:18:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-18 08:18:23,503 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-18 08:18:23,504 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-18 08:18:23,504 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-18 08:18:23,504 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_set_coalesce [2021-12-18 08:18:23,504 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_set_coalesce [2021-12-18 08:18:23,504 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 08:18:23,505 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 08:18:23,505 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-18 08:18:23,505 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-18 08:18:23,505 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-12-18 08:18:23,471 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 [2021-12-18 08:18:23,506 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-12-18 08:18:23,506 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-18 08:18:23,506 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-18 08:18:23,506 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-12-18 08:18:23,507 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-12-18 08:18:23,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 08:18:23,507 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-12-18 08:18:23,507 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-12-18 08:18:23,507 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-18 08:18:23,508 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-18 08:18:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 08:18:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-18 08:18:23,509 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-18 08:18:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-18 08:18:23,510 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-18 08:18:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-18 08:18:23,510 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-18 08:18:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_disable_interrupt [2021-12-18 08:18:23,510 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_disable_interrupt [2021-12-18 08:18:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-18 08:18:23,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-18 08:18:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 08:18:23,511 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 08:18:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-12-18 08:18:23,512 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-12-18 08:18:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-18 08:18:23,512 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-18 08:18:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_set_multicast_list [2021-12-18 08:18:23,512 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_set_multicast_list [2021-12-18 08:18:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 08:18:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 08:18:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_resume [2021-12-18 08:18:23,513 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_resume [2021-12-18 08:18:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_tx_timeout [2021-12-18 08:18:23,513 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_tx_timeout [2021-12-18 08:18:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-18 08:18:23,513 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-18 08:18:23,514 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-18 08:18:23,514 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-18 08:18:23,514 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_mdio_read [2021-12-18 08:18:23,514 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_mdio_read [2021-12-18 08:18:23,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 08:18:23,515 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-18 08:18:23,515 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-18 08:18:23,515 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_set_rx_buff_len [2021-12-18 08:18:23,515 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_set_rx_buff_len [2021-12-18 08:18:23,515 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_restart [2021-12-18 08:18:23,515 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_restart [2021-12-18 08:18:23,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 08:18:23,516 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_2 [2021-12-18 08:18:23,516 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_2 [2021-12-18 08:18:23,516 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-18 08:18:23,517 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-18 08:18:23,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 08:18:23,517 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-18 08:18:23,517 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-18 08:18:23,518 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-18 08:18:23,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-18 08:18:23,518 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-18 08:18:23,518 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-18 08:18:23,518 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-18 08:18:23,518 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-18 08:18:23,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-18 08:18:23,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-18 08:18:23,519 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_ioctl [2021-12-18 08:18:23,519 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_ioctl [2021-12-18 08:18:23,519 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-18 08:18:23,519 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-18 08:18:23,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 08:18:23,519 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-18 08:18:23,520 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-18 08:18:23,521 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-18 08:18:23,522 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-18 08:18:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_write_phy [2021-12-18 08:18:23,523 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_write_phy [2021-12-18 08:18:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-18 08:18:23,524 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-18 08:18:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 08:18:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 08:18:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_set_mac_address [2021-12-18 08:18:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_set_mac_address [2021-12-18 08:18:23,529 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_stop_chip [2021-12-18 08:18:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_stop_chip [2021-12-18 08:18:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 08:18:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 08:18:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 08:18:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_2 [2021-12-18 08:18:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_2 [2021-12-18 08:18:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_read_phy [2021-12-18 08:18:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_read_phy [2021-12-18 08:18:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-18 08:18:23,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-18 08:18:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 08:18:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-18 08:18:23,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-18 08:18:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 08:18:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-18 08:18:23,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-18 08:18:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2021-12-18 08:18:23,532 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2021-12-18 08:18:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_poll [2021-12-18 08:18:23,532 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_poll [2021-12-18 08:18:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_change_mtu [2021-12-18 08:18:23,532 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_change_mtu [2021-12-18 08:18:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-18 08:18:23,532 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-18 08:18:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_3 [2021-12-18 08:18:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_3 [2021-12-18 08:18:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-18 08:18:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-18 08:18:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_remove_one [2021-12-18 08:18:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_remove_one [2021-12-18 08:18:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-18 08:18:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-18 08:18:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-12-18 08:18:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-12-18 08:18:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_free_skbs [2021-12-18 08:18:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_free_skbs [2021-12-18 08:18:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-12-18 08:18:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-12-18 08:18:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-18 08:18:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-18 08:18:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 08:18:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-12-18 08:18:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-12-18 08:18:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-12-18 08:18:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-12-18 08:18:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 08:18:23,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 08:18:24,192 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 08:18:24,196 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 08:18:24,657 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 08:18:26,293 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 08:18:26,316 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 08:18:26,316 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-18 08:18:26,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:18:26 BoogieIcfgContainer [2021-12-18 08:18:26,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 08:18:26,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 08:18:26,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 08:18:26,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 08:18:26,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 08:18:20" (1/3) ... [2021-12-18 08:18:26,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5632b260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:18:26, skipping insertion in model container [2021-12-18 08:18:26,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:18:22" (2/3) ... [2021-12-18 08:18:26,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5632b260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:18:26, skipping insertion in model container [2021-12-18 08:18:26,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:18:26" (3/3) ... [2021-12-18 08:18:26,330 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i [2021-12-18 08:18:26,334 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 08:18:26,335 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 08:18:26,392 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 08:18:26,410 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 [2021-12-18 08:18:26,411 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 08:18:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 1499 states, 997 states have (on average 1.3069207622868606) internal successors, (1303), 1024 states have internal predecessors, (1303), 421 states have call successors, (421), 80 states have call predecessors, (421), 79 states have return successors, (414), 409 states have call predecessors, (414), 414 states have call successors, (414) [2021-12-18 08:18:26,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-18 08:18:26,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:18:26,503 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 3, 3, 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, 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, 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] [2021-12-18 08:18:26,503 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:18:26,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:18:26,508 INFO L85 PathProgramCache]: Analyzing trace with hash -599118696, now seen corresponding path program 1 times [2021-12-18 08:18:26,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:18:26,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808370125] [2021-12-18 08:18:26,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:18:26,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:18:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:26,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:18:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:26,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:18:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:18:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:18:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:18:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:18:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:18:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:18:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:18:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:18:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 08:18:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 08:18:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 08:18:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-18 08:18:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 08:18:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 08:18:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-18 08:18:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-18 08:18:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 08:18:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-12-18 08:18:27,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:18:27,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808370125] [2021-12-18 08:18:27,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808370125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:18:27,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:18:27,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 08:18:27,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253860128] [2021-12-18 08:18:27,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:18:27,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 08:18:27,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:18:27,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 08:18:27,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 08:18:27,544 INFO L87 Difference]: Start difference. First operand has 1499 states, 997 states have (on average 1.3069207622868606) internal successors, (1303), 1024 states have internal predecessors, (1303), 421 states have call successors, (421), 80 states have call predecessors, (421), 79 states have return successors, (414), 409 states have call predecessors, (414), 414 states have call successors, (414) Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 08:18:30,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:18:30,575 INFO L93 Difference]: Finished difference Result 3127 states and 4522 transitions. [2021-12-18 08:18:30,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 08:18:30,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 234 [2021-12-18 08:18:30,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:18:30,607 INFO L225 Difference]: With dead ends: 3127 [2021-12-18 08:18:30,608 INFO L226 Difference]: Without dead ends: 1609 [2021-12-18 08:18:30,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 08:18:30,625 INFO L933 BasicCegarLoop]: 1921 mSDtfsCounter, 1792 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 2222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 3462 SdHoareTripleChecker+Invalid, 3440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2222 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-18 08:18:30,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1865 Valid, 3462 Invalid, 3440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2222 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-18 08:18:30,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2021-12-18 08:18:30,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1475. [2021-12-18 08:18:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 982 states have (on average 1.2922606924643585) internal successors, (1269), 1000 states have internal predecessors, (1269), 414 states have call successors, (414), 79 states have call predecessors, (414), 78 states have return successors, (413), 408 states have call predecessors, (413), 413 states have call successors, (413) [2021-12-18 08:18:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2096 transitions. [2021-12-18 08:18:30,784 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2096 transitions. Word has length 234 [2021-12-18 08:18:30,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:18:30,784 INFO L470 AbstractCegarLoop]: Abstraction has 1475 states and 2096 transitions. [2021-12-18 08:18:30,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 08:18:30,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2096 transitions. [2021-12-18 08:18:30,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-18 08:18:30,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:18:30,796 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 3, 3, 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, 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, 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] [2021-12-18 08:18:30,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 08:18:30,797 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:18:30,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:18:30,798 INFO L85 PathProgramCache]: Analyzing trace with hash 518087718, now seen corresponding path program 1 times [2021-12-18 08:18:30,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:18:30,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634617480] [2021-12-18 08:18:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:18:30,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:18:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:18:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:30,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:30,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:18:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:30,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:30,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:18:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:18:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:18:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:18:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:18:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:18:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:18:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:18:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 08:18:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 08:18:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 08:18:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-18 08:18:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 08:18:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 08:18:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-18 08:18:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-18 08:18:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 08:18:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-12-18 08:18:31,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:18:31,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634617480] [2021-12-18 08:18:31,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634617480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:18:31,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:18:31,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 08:18:31,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477196726] [2021-12-18 08:18:31,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:18:31,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 08:18:31,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:18:31,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 08:18:31,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 08:18:31,350 INFO L87 Difference]: Start difference. First operand 1475 states and 2096 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 08:18:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:18:36,416 INFO L93 Difference]: Finished difference Result 4067 states and 5785 transitions. [2021-12-18 08:18:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 08:18:36,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 234 [2021-12-18 08:18:36,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:18:36,433 INFO L225 Difference]: With dead ends: 4067 [2021-12-18 08:18:36,433 INFO L226 Difference]: Without dead ends: 2620 [2021-12-18 08:18:36,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-18 08:18:36,444 INFO L933 BasicCegarLoop]: 2154 mSDtfsCounter, 2947 mSDsluCounter, 3564 mSDsCounter, 0 mSdLazyCounter, 3240 mSolverCounterSat, 2793 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 5718 SdHoareTripleChecker+Invalid, 6033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2793 IncrementalHoareTripleChecker+Valid, 3240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-18 08:18:36,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3146 Valid, 5718 Invalid, 6033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2793 Valid, 3240 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-18 08:18:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2021-12-18 08:18:36,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2409. [2021-12-18 08:18:36,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 1631 states have (on average 1.296137339055794) internal successors, (2114), 1662 states have internal predecessors, (2114), 640 states have call successors, (640), 138 states have call predecessors, (640), 137 states have return successors, (643), 628 states have call predecessors, (643), 639 states have call successors, (643) [2021-12-18 08:18:36,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 3397 transitions. [2021-12-18 08:18:36,579 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 3397 transitions. Word has length 234 [2021-12-18 08:18:36,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:18:36,582 INFO L470 AbstractCegarLoop]: Abstraction has 2409 states and 3397 transitions. [2021-12-18 08:18:36,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 08:18:36,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 3397 transitions. [2021-12-18 08:18:36,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-12-18 08:18:36,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:18:36,588 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 3, 3, 2, 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, 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, 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] [2021-12-18 08:18:36,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 08:18:36,589 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:18:36,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:18:36,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1136556690, now seen corresponding path program 1 times [2021-12-18 08:18:36,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:18:36,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883563346] [2021-12-18 08:18:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:18:36,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:18:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:18:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:18:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:18:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:18:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:18:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:18:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:18:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:18:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:18:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:18:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 08:18:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 08:18:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 08:18:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:36,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:37,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-18 08:18:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:37,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-18 08:18:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:37,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-18 08:18:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:37,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-18 08:18:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:37,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:37,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-12-18 08:18:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:37,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-18 08:18:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:37,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-18 08:18:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:37,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-18 08:18:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:37,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:37,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-12-18 08:18:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:37,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2021-12-18 08:18:37,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:18:37,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883563346] [2021-12-18 08:18:37,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883563346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:18:37,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:18:37,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 08:18:37,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284554385] [2021-12-18 08:18:37,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:18:37,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 08:18:37,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:18:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 08:18:37,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 08:18:37,111 INFO L87 Difference]: Start difference. First operand 2409 states and 3397 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (33), 6 states have call predecessors, (33), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 08:18:42,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:18:42,706 INFO L93 Difference]: Finished difference Result 6720 states and 9564 transitions. [2021-12-18 08:18:42,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 08:18:42,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (33), 6 states have call predecessors, (33), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 253 [2021-12-18 08:18:42,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:18:42,732 INFO L225 Difference]: With dead ends: 6720 [2021-12-18 08:18:42,732 INFO L226 Difference]: Without dead ends: 4339 [2021-12-18 08:18:42,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-18 08:18:42,742 INFO L933 BasicCegarLoop]: 2620 mSDtfsCounter, 3449 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 3637 mSolverCounterSat, 2975 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3733 SdHoareTripleChecker+Valid, 6800 SdHoareTripleChecker+Invalid, 6612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2975 IncrementalHoareTripleChecker+Valid, 3637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-18 08:18:42,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3733 Valid, 6800 Invalid, 6612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2975 Valid, 3637 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-12-18 08:18:42,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4339 states. [2021-12-18 08:18:42,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4339 to 3966. [2021-12-18 08:18:42,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3966 states, 2683 states have (on average 1.3004099888184868) internal successors, (3489), 2737 states have internal predecessors, (3489), 1061 states have call successors, (1061), 222 states have call predecessors, (1061), 221 states have return successors, (1064), 1041 states have call predecessors, (1064), 1060 states have call successors, (1064) [2021-12-18 08:18:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3966 states to 3966 states and 5614 transitions. [2021-12-18 08:18:42,906 INFO L78 Accepts]: Start accepts. Automaton has 3966 states and 5614 transitions. Word has length 253 [2021-12-18 08:18:42,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:18:42,907 INFO L470 AbstractCegarLoop]: Abstraction has 3966 states and 5614 transitions. [2021-12-18 08:18:42,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (33), 6 states have call predecessors, (33), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 08:18:42,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3966 states and 5614 transitions. [2021-12-18 08:18:42,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-12-18 08:18:42,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:18:42,917 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1] [2021-12-18 08:18:42,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 08:18:42,917 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:18:42,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:18:42,918 INFO L85 PathProgramCache]: Analyzing trace with hash -387304057, now seen corresponding path program 1 times [2021-12-18 08:18:42,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:18:42,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099724990] [2021-12-18 08:18:42,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:18:42,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:18:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:18:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:18:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:18:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:18:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:18:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:18:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:18:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:18:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:18:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:18:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:18:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-18 08:18:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-18 08:18:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-18 08:18:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-18 08:18:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-18 08:18:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 08:18:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-18 08:18:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-18 08:18:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-18 08:18:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 08:18:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-18 08:18:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-18 08:18:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-12-18 08:18:43,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:18:43,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099724990] [2021-12-18 08:18:43,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099724990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:18:43,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:18:43,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 08:18:43,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393618157] [2021-12-18 08:18:43,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:18:43,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 08:18:43,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:18:43,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 08:18:43,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 08:18:43,375 INFO L87 Difference]: Start difference. First operand 3966 states and 5614 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 08:18:46,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:18:46,357 INFO L93 Difference]: Finished difference Result 8258 states and 11762 transitions. [2021-12-18 08:18:46,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 08:18:46,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 282 [2021-12-18 08:18:46,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:18:46,382 INFO L225 Difference]: With dead ends: 8258 [2021-12-18 08:18:46,382 INFO L226 Difference]: Without dead ends: 4334 [2021-12-18 08:18:46,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-12-18 08:18:46,400 INFO L933 BasicCegarLoop]: 1879 mSDtfsCounter, 2892 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 2099 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3163 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 3934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2099 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-18 08:18:46,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3163 Valid, 4003 Invalid, 3934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2099 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-18 08:18:46,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2021-12-18 08:18:46,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 3966. [2021-12-18 08:18:46,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3966 states, 2683 states have (on average 1.2996645546030563) internal successors, (3487), 2737 states have internal predecessors, (3487), 1061 states have call successors, (1061), 222 states have call predecessors, (1061), 221 states have return successors, (1064), 1041 states have call predecessors, (1064), 1060 states have call successors, (1064) [2021-12-18 08:18:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3966 states to 3966 states and 5612 transitions. [2021-12-18 08:18:46,567 INFO L78 Accepts]: Start accepts. Automaton has 3966 states and 5612 transitions. Word has length 282 [2021-12-18 08:18:46,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:18:46,568 INFO L470 AbstractCegarLoop]: Abstraction has 3966 states and 5612 transitions. [2021-12-18 08:18:46,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 08:18:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3966 states and 5612 transitions. [2021-12-18 08:18:46,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-12-18 08:18:46,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:18:46,577 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:18:46,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 08:18:46,577 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:18:46,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:18:46,578 INFO L85 PathProgramCache]: Analyzing trace with hash -108887453, now seen corresponding path program 1 times [2021-12-18 08:18:46,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:18:46,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761905315] [2021-12-18 08:18:46,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:18:46,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:18:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:18:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:18:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:18:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:18:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:18:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:18:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:18:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:18:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:18:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:18:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:18:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:46,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:18:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:18:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:18:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-18 08:18:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-18 08:18:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 08:18:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 08:18:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-18 08:18:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-12-18 08:18:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-18 08:18:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 08:18:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-18 08:18:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-18 08:18:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-18 08:18:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-18 08:18:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-12-18 08:18:47,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:18:47,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761905315] [2021-12-18 08:18:47,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761905315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:18:47,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:18:47,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 08:18:47,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728156964] [2021-12-18 08:18:47,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:18:47,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 08:18:47,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:18:47,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 08:18:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 08:18:47,187 INFO L87 Difference]: Start difference. First operand 3966 states and 5612 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (37), 6 states have call predecessors, (37), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-18 08:18:52,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:18:52,464 INFO L93 Difference]: Finished difference Result 10069 states and 14377 transitions. [2021-12-18 08:18:52,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 08:18:52,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (37), 6 states have call predecessors, (37), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 332 [2021-12-18 08:18:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:18:52,500 INFO L225 Difference]: With dead ends: 10069 [2021-12-18 08:18:52,500 INFO L226 Difference]: Without dead ends: 6145 [2021-12-18 08:18:52,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-18 08:18:52,518 INFO L933 BasicCegarLoop]: 3243 mSDtfsCounter, 2854 mSDsluCounter, 4766 mSDsCounter, 0 mSdLazyCounter, 4098 mSolverCounterSat, 2590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3143 SdHoareTripleChecker+Valid, 8009 SdHoareTripleChecker+Invalid, 6688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2590 IncrementalHoareTripleChecker+Valid, 4098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-18 08:18:52,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3143 Valid, 8009 Invalid, 6688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2590 Valid, 4098 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-12-18 08:18:52,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2021-12-18 08:18:52,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 5601. [2021-12-18 08:18:52,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5601 states, 3804 states have (on average 1.3012618296529967) internal successors, (4950), 3881 states have internal predecessors, (4950), 1486 states have call successors, (1486), 311 states have call predecessors, (1486), 310 states have return successors, (1489), 1459 states have call predecessors, (1489), 1485 states have call successors, (1489) [2021-12-18 08:18:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5601 states to 5601 states and 7925 transitions. [2021-12-18 08:18:52,781 INFO L78 Accepts]: Start accepts. Automaton has 5601 states and 7925 transitions. Word has length 332 [2021-12-18 08:18:52,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:18:52,782 INFO L470 AbstractCegarLoop]: Abstraction has 5601 states and 7925 transitions. [2021-12-18 08:18:52,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (37), 6 states have call predecessors, (37), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-18 08:18:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5601 states and 7925 transitions. [2021-12-18 08:18:52,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-12-18 08:18:52,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:18:52,794 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:18:52,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 08:18:52,795 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:18:52,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:18:52,795 INFO L85 PathProgramCache]: Analyzing trace with hash -432636051, now seen corresponding path program 1 times [2021-12-18 08:18:52,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:18:52,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784823259] [2021-12-18 08:18:52,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:18:52,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:18:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:52,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:18:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:18:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:18:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:18:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:18:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:18:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:18:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:18:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:18:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:18:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:18:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:18:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:18:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:18:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-12-18 08:18:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-18 08:18:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 08:18:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-12-18 08:18:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-12-18 08:18:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-12-18 08:18:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-18 08:18:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-18 08:18:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-12-18 08:18:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-18 08:18:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-18 08:18:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-18 08:18:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2021-12-18 08:18:53,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:18:53,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784823259] [2021-12-18 08:18:53,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784823259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:18:53,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:18:53,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 08:18:53,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820614041] [2021-12-18 08:18:53,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:18:53,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 08:18:53,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:18:53,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 08:18:53,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 08:18:53,295 INFO L87 Difference]: Start difference. First operand 5601 states and 7925 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (37), 6 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 08:18:57,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:18:57,957 INFO L93 Difference]: Finished difference Result 13515 states and 19266 transitions. [2021-12-18 08:18:57,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 08:18:57,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (37), 6 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 344 [2021-12-18 08:18:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:18:58,010 INFO L225 Difference]: With dead ends: 13515 [2021-12-18 08:18:58,010 INFO L226 Difference]: Without dead ends: 7956 [2021-12-18 08:18:58,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-18 08:18:58,039 INFO L933 BasicCegarLoop]: 2760 mSDtfsCounter, 3860 mSDsluCounter, 3474 mSDsCounter, 0 mSdLazyCounter, 2844 mSolverCounterSat, 3875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4157 SdHoareTripleChecker+Valid, 6234 SdHoareTripleChecker+Invalid, 6719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3875 IncrementalHoareTripleChecker+Valid, 2844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-18 08:18:58,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4157 Valid, 6234 Invalid, 6719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3875 Valid, 2844 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-18 08:18:58,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7956 states. [2021-12-18 08:18:58,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7956 to 7253. [2021-12-18 08:18:58,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7253 states, 4936 states have (on average 1.301256077795786) internal successors, (6423), 5037 states have internal predecessors, (6423), 1911 states have call successors, (1911), 406 states have call predecessors, (1911), 405 states have return successors, (1914), 1876 states have call predecessors, (1914), 1910 states have call successors, (1914) [2021-12-18 08:18:58,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7253 states to 7253 states and 10248 transitions. [2021-12-18 08:18:58,379 INFO L78 Accepts]: Start accepts. Automaton has 7253 states and 10248 transitions. Word has length 344 [2021-12-18 08:18:58,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:18:58,380 INFO L470 AbstractCegarLoop]: Abstraction has 7253 states and 10248 transitions. [2021-12-18 08:18:58,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (37), 6 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 08:18:58,380 INFO L276 IsEmpty]: Start isEmpty. Operand 7253 states and 10248 transitions. [2021-12-18 08:18:58,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2021-12-18 08:18:58,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:18:58,399 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:18:58,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 08:18:58,400 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:18:58,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:18:58,400 INFO L85 PathProgramCache]: Analyzing trace with hash 87512182, now seen corresponding path program 1 times [2021-12-18 08:18:58,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:18:58,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308555021] [2021-12-18 08:18:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:18:58,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:18:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:18:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:18:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:18:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:18:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:18:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:18:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:18:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:18:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:18:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:18:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:18:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:18:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:18:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:18:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 08:18:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-18 08:18:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-18 08:18:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-12-18 08:18:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-18 08:18:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-12-18 08:18:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-12-18 08:18:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-12-18 08:18:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-12-18 08:18:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-12-18 08:18:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2021-12-18 08:18:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-12-18 08:18:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-18 08:18:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2021-12-18 08:18:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2021-12-18 08:18:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2021-12-18 08:18:58,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:18:58,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308555021] [2021-12-18 08:18:58,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308555021] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:18:58,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:18:58,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 08:18:58,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109269814] [2021-12-18 08:18:58,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:18:58,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 08:18:58,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:18:58,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 08:18:58,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 08:18:58,963 INFO L87 Difference]: Start difference. First operand 7253 states and 10248 transitions. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (40), 6 states have call predecessors, (40), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-12-18 08:19:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:19:02,609 INFO L93 Difference]: Finished difference Result 17601 states and 25625 transitions. [2021-12-18 08:19:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 08:19:02,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (40), 6 states have call predecessors, (40), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 377 [2021-12-18 08:19:02,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:19:02,664 INFO L225 Difference]: With dead ends: 17601 [2021-12-18 08:19:02,664 INFO L226 Difference]: Without dead ends: 10390 [2021-12-18 08:19:02,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-18 08:19:02,695 INFO L933 BasicCegarLoop]: 2723 mSDtfsCounter, 2295 mSDsluCounter, 4130 mSDsCounter, 0 mSdLazyCounter, 2217 mSolverCounterSat, 2186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2575 SdHoareTripleChecker+Valid, 6853 SdHoareTripleChecker+Invalid, 4403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2186 IncrementalHoareTripleChecker+Valid, 2217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-18 08:19:02,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2575 Valid, 6853 Invalid, 4403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2186 Valid, 2217 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-18 08:19:02,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10390 states. [2021-12-18 08:19:03,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10390 to 7255. [2021-12-18 08:19:03,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7255 states, 4938 states have (on average 1.3011340623734304) internal successors, (6425), 5039 states have internal predecessors, (6425), 1911 states have call successors, (1911), 406 states have call predecessors, (1911), 405 states have return successors, (1914), 1876 states have call predecessors, (1914), 1910 states have call successors, (1914) [2021-12-18 08:19:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7255 states to 7255 states and 10250 transitions. [2021-12-18 08:19:03,063 INFO L78 Accepts]: Start accepts. Automaton has 7255 states and 10250 transitions. Word has length 377 [2021-12-18 08:19:03,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:19:03,064 INFO L470 AbstractCegarLoop]: Abstraction has 7255 states and 10250 transitions. [2021-12-18 08:19:03,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (40), 6 states have call predecessors, (40), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-12-18 08:19:03,064 INFO L276 IsEmpty]: Start isEmpty. Operand 7255 states and 10250 transitions. [2021-12-18 08:19:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2021-12-18 08:19:03,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:19:03,084 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:19:03,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 08:19:03,085 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:19:03,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:19:03,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1237143274, now seen corresponding path program 1 times [2021-12-18 08:19:03,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:19:03,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749905713] [2021-12-18 08:19:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:03,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:19:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:19:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:19:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:19:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:19:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:19:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:19:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:19:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:19:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:19:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:19:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:19:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:19:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:19:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:19:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 08:19:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-18 08:19:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-18 08:19:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-12-18 08:19:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-12-18 08:19:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-18 08:19:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-12-18 08:19:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-18 08:19:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-12-18 08:19:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-12-18 08:19:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-18 08:19:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-12-18 08:19:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-18 08:19:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2021-12-18 08:19:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-12-18 08:19:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2021-12-18 08:19:03,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:19:03,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749905713] [2021-12-18 08:19:03,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749905713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:19:03,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:19:03,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 08:19:03,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214112487] [2021-12-18 08:19:03,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:19:03,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 08:19:03,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:19:03,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 08:19:03,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 08:19:03,647 INFO L87 Difference]: Start difference. First operand 7255 states and 10250 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (40), 6 states have call predecessors, (40), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-12-18 08:19:09,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:19:09,195 INFO L93 Difference]: Finished difference Result 17364 states and 24671 transitions. [2021-12-18 08:19:09,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 08:19:09,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (40), 6 states have call predecessors, (40), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 379 [2021-12-18 08:19:09,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:19:09,238 INFO L225 Difference]: With dead ends: 17364 [2021-12-18 08:19:09,239 INFO L226 Difference]: Without dead ends: 10151 [2021-12-18 08:19:09,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-18 08:19:09,261 INFO L933 BasicCegarLoop]: 3214 mSDtfsCounter, 2919 mSDsluCounter, 5094 mSDsCounter, 0 mSdLazyCounter, 3963 mSolverCounterSat, 2606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3200 SdHoareTripleChecker+Valid, 8308 SdHoareTripleChecker+Invalid, 6569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2606 IncrementalHoareTripleChecker+Valid, 3963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:19:09,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3200 Valid, 8308 Invalid, 6569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2606 Valid, 3963 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-18 08:19:09,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10151 states. [2021-12-18 08:19:09,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10151 to 9248. [2021-12-18 08:19:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9248 states, 6286 states have (on average 1.2976455615653835) internal successors, (8157), 6414 states have internal predecessors, (8157), 2431 states have call successors, (2431), 531 states have call predecessors, (2431), 530 states have return successors, (2434), 2387 states have call predecessors, (2434), 2430 states have call successors, (2434) [2021-12-18 08:19:09,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9248 states to 9248 states and 13022 transitions. [2021-12-18 08:19:09,729 INFO L78 Accepts]: Start accepts. Automaton has 9248 states and 13022 transitions. Word has length 379 [2021-12-18 08:19:09,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:19:09,730 INFO L470 AbstractCegarLoop]: Abstraction has 9248 states and 13022 transitions. [2021-12-18 08:19:09,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (40), 6 states have call predecessors, (40), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-12-18 08:19:09,730 INFO L276 IsEmpty]: Start isEmpty. Operand 9248 states and 13022 transitions. [2021-12-18 08:19:09,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-12-18 08:19:09,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:19:09,750 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:19:09,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 08:19:09,750 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:19:09,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:19:09,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1057159998, now seen corresponding path program 1 times [2021-12-18 08:19:09,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:19:09,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826916434] [2021-12-18 08:19:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:09,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:19:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:09,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:19:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:09,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:19:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:19:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:19:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:19:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:19:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:19:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:19:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:19:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:19:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:19:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:19:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:19:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:19:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 08:19:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-18 08:19:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-18 08:19:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 08:19:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-18 08:19:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-12-18 08:19:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-12-18 08:19:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-12-18 08:19:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-12-18 08:19:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-18 08:19:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-18 08:19:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-12-18 08:19:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-12-18 08:19:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-12-18 08:19:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-12-18 08:19:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2021-12-18 08:19:10,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:19:10,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826916434] [2021-12-18 08:19:10,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826916434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:19:10,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:19:10,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 08:19:10,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764038264] [2021-12-18 08:19:10,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:19:10,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 08:19:10,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:19:10,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 08:19:10,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 08:19:10,379 INFO L87 Difference]: Start difference. First operand 9248 states and 13022 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-12-18 08:19:13,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:19:13,753 INFO L93 Difference]: Finished difference Result 19527 states and 27730 transitions. [2021-12-18 08:19:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 08:19:13,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 378 [2021-12-18 08:19:13,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:19:13,814 INFO L225 Difference]: With dead ends: 19527 [2021-12-18 08:19:13,815 INFO L226 Difference]: Without dead ends: 10321 [2021-12-18 08:19:13,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-18 08:19:13,857 INFO L933 BasicCegarLoop]: 1873 mSDtfsCounter, 1444 mSDsluCounter, 3589 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 1721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 5462 SdHoareTripleChecker+Invalid, 4199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1721 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-18 08:19:13,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 5462 Invalid, 4199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1721 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-18 08:19:13,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10321 states. [2021-12-18 08:19:14,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10321 to 9262. [2021-12-18 08:19:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9262 states, 6300 states have (on average 1.296984126984127) internal successors, (8171), 6428 states have internal predecessors, (8171), 2431 states have call successors, (2431), 531 states have call predecessors, (2431), 530 states have return successors, (2434), 2387 states have call predecessors, (2434), 2430 states have call successors, (2434) [2021-12-18 08:19:14,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9262 states to 9262 states and 13036 transitions. [2021-12-18 08:19:14,394 INFO L78 Accepts]: Start accepts. Automaton has 9262 states and 13036 transitions. Word has length 378 [2021-12-18 08:19:14,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:19:14,396 INFO L470 AbstractCegarLoop]: Abstraction has 9262 states and 13036 transitions. [2021-12-18 08:19:14,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-12-18 08:19:14,397 INFO L276 IsEmpty]: Start isEmpty. Operand 9262 states and 13036 transitions. [2021-12-18 08:19:14,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2021-12-18 08:19:14,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:19:14,420 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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] [2021-12-18 08:19:14,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 08:19:14,421 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:19:14,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:19:14,421 INFO L85 PathProgramCache]: Analyzing trace with hash 456212830, now seen corresponding path program 1 times [2021-12-18 08:19:14,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:19:14,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806944500] [2021-12-18 08:19:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:14,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:19:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:19:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:19:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:19:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:19:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:19:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:19:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:19:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:19:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:19:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:19:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:19:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:19:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:19:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:19:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 08:19:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-18 08:19:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-18 08:19:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 08:19:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-18 08:19:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-12-18 08:19:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-12-18 08:19:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-12-18 08:19:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-12-18 08:19:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-18 08:19:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-18 08:19:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-12-18 08:19:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-12-18 08:19:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-12-18 08:19:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-12-18 08:19:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:14,984 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2021-12-18 08:19:14,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:19:14,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806944500] [2021-12-18 08:19:14,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806944500] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:19:14,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159802882] [2021-12-18 08:19:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:14,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:19:14,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:19:14,987 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) [2021-12-18 08:19:15,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 08:19:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:15,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 3125 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 08:19:15,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:19:16,340 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2021-12-18 08:19:16,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 08:19:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2021-12-18 08:19:16,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159802882] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 08:19:16,974 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 08:19:16,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2021-12-18 08:19:16,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224254655] [2021-12-18 08:19:16,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 08:19:16,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 08:19:16,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:19:16,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 08:19:16,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-18 08:19:16,976 INFO L87 Difference]: Start difference. First operand 9262 states and 13036 transitions. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 6 states have internal predecessors, (153), 2 states have call successors, (61), 6 states have call predecessors, (61), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-18 08:19:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:19:21,104 INFO L93 Difference]: Finished difference Result 20017 states and 28451 transitions. [2021-12-18 08:19:21,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 08:19:21,105 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 6 states have internal predecessors, (153), 2 states have call successors, (61), 6 states have call predecessors, (61), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 386 [2021-12-18 08:19:21,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:19:21,173 INFO L225 Difference]: With dead ends: 20017 [2021-12-18 08:19:21,173 INFO L226 Difference]: Without dead ends: 10797 [2021-12-18 08:19:21,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2021-12-18 08:19:21,218 INFO L933 BasicCegarLoop]: 1882 mSDtfsCounter, 1485 mSDsluCounter, 5735 mSDsCounter, 0 mSdLazyCounter, 3826 mSolverCounterSat, 1812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 7617 SdHoareTripleChecker+Invalid, 5638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1812 IncrementalHoareTripleChecker+Valid, 3826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-18 08:19:21,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1554 Valid, 7617 Invalid, 5638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1812 Valid, 3826 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-18 08:19:21,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10797 states. [2021-12-18 08:19:21,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10797 to 9598. [2021-12-18 08:19:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9598 states, 6552 states have (on average 1.291971916971917) internal successors, (8465), 6680 states have internal predecessors, (8465), 2515 states have call successors, (2515), 531 states have call predecessors, (2515), 530 states have return successors, (2518), 2471 states have call predecessors, (2518), 2514 states have call successors, (2518) [2021-12-18 08:19:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9598 states to 9598 states and 13498 transitions. [2021-12-18 08:19:21,824 INFO L78 Accepts]: Start accepts. Automaton has 9598 states and 13498 transitions. Word has length 386 [2021-12-18 08:19:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:19:21,825 INFO L470 AbstractCegarLoop]: Abstraction has 9598 states and 13498 transitions. [2021-12-18 08:19:21,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 6 states have internal predecessors, (153), 2 states have call successors, (61), 6 states have call predecessors, (61), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-18 08:19:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand 9598 states and 13498 transitions. [2021-12-18 08:19:21,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2021-12-18 08:19:21,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:19:21,855 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:19:21,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 08:19:22,076 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,SelfDestructingSolverStorable9 [2021-12-18 08:19:22,077 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:19:22,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:19:22,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1376111436, now seen corresponding path program 1 times [2021-12-18 08:19:22,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:19:22,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545836356] [2021-12-18 08:19:22,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:22,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:19:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:19:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:19:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:19:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:19:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:19:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:19:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:19:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:19:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:19:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:19:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:19:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:19:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:19:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:19:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 08:19:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-18 08:19:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-18 08:19:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 08:19:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-18 08:19:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-12-18 08:19:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-12-18 08:19:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-12-18 08:19:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-12-18 08:19:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-18 08:19:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-18 08:19:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-12-18 08:19:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-12-18 08:19:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-12-18 08:19:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:19:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2021-12-18 08:19:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:19:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-12-18 08:19:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2021-12-18 08:19:22,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:19:22,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545836356] [2021-12-18 08:19:22,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545836356] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:19:22,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108485425] [2021-12-18 08:19:22,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:22,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:19:22,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:19:22,855 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) [2021-12-18 08:19:22,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 08:19:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:23,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 3304 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 08:19:23,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:19:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2021-12-18 08:19:24,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:19:24,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108485425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:19:24,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 08:19:24,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2021-12-18 08:19:24,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194627992] [2021-12-18 08:19:24,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:19:24,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 08:19:24,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:19:24,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 08:19:24,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-18 08:19:24,294 INFO L87 Difference]: Start difference. First operand 9598 states and 13498 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-18 08:19:25,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:19:25,081 INFO L93 Difference]: Finished difference Result 21625 states and 30500 transitions. [2021-12-18 08:19:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 08:19:25,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 396 [2021-12-18 08:19:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:19:25,134 INFO L225 Difference]: With dead ends: 21625 [2021-12-18 08:19:25,135 INFO L226 Difference]: Without dead ends: 12069 [2021-12-18 08:19:25,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-18 08:19:25,165 INFO L933 BasicCegarLoop]: 4119 mSDtfsCounter, 2573 mSDsluCounter, 6029 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2573 SdHoareTripleChecker+Valid, 10148 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 08:19:25,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2573 Valid, 10148 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 08:19:25,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12069 states. [2021-12-18 08:19:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12069 to 9602. [2021-12-18 08:19:25,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9602 states, 6556 states have (on average 1.2917937766931056) internal successors, (8469), 6684 states have internal predecessors, (8469), 2515 states have call successors, (2515), 531 states have call predecessors, (2515), 530 states have return successors, (2518), 2471 states have call predecessors, (2518), 2514 states have call successors, (2518) [2021-12-18 08:19:25,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9602 states to 9602 states and 13502 transitions. [2021-12-18 08:19:25,600 INFO L78 Accepts]: Start accepts. Automaton has 9602 states and 13502 transitions. Word has length 396 [2021-12-18 08:19:25,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:19:25,601 INFO L470 AbstractCegarLoop]: Abstraction has 9602 states and 13502 transitions. [2021-12-18 08:19:25,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-18 08:19:25,601 INFO L276 IsEmpty]: Start isEmpty. Operand 9602 states and 13502 transitions. [2021-12-18 08:19:25,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-12-18 08:19:25,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:19:25,629 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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] [2021-12-18 08:19:25,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 08:19:25,855 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,SelfDestructingSolverStorable10 [2021-12-18 08:19:25,856 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:19:25,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:19:25,856 INFO L85 PathProgramCache]: Analyzing trace with hash -161574961, now seen corresponding path program 1 times [2021-12-18 08:19:25,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:19:25,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353091406] [2021-12-18 08:19:25,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:25,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:19:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:19:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:19:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:19:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:19:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:19:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:19:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:19:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:19:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:19:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:19:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:19:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:19:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:19:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:19:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-18 08:19:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-18 08:19:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 08:19:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-18 08:19:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-18 08:19:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-18 08:19:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-12-18 08:19:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-12-18 08:19:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-12-18 08:19:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-12-18 08:19:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2021-12-18 08:19:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-12-18 08:19:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-18 08:19:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-12-18 08:19:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-12-18 08:19:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:19:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-12-18 08:19:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:19:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-12-18 08:19:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2021-12-18 08:19:26,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:19:26,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353091406] [2021-12-18 08:19:26,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353091406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:19:26,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:19:26,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 08:19:26,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172408850] [2021-12-18 08:19:26,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:19:26,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 08:19:26,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:19:26,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 08:19:26,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-18 08:19:26,473 INFO L87 Difference]: Start difference. First operand 9602 states and 13502 transitions. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 5 states have internal predecessors, (143), 3 states have call successors, (42), 7 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-12-18 08:19:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:19:34,152 INFO L93 Difference]: Finished difference Result 22908 states and 32470 transitions. [2021-12-18 08:19:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-18 08:19:34,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 5 states have internal predecessors, (143), 3 states have call successors, (42), 7 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 402 [2021-12-18 08:19:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:19:34,291 INFO L225 Difference]: With dead ends: 22908 [2021-12-18 08:19:34,291 INFO L226 Difference]: Without dead ends: 13348 [2021-12-18 08:19:34,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2021-12-18 08:19:34,316 INFO L933 BasicCegarLoop]: 3325 mSDtfsCounter, 4317 mSDsluCounter, 9653 mSDsCounter, 0 mSdLazyCounter, 7040 mSolverCounterSat, 4570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4467 SdHoareTripleChecker+Valid, 12978 SdHoareTripleChecker+Invalid, 11610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4570 IncrementalHoareTripleChecker+Valid, 7040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-12-18 08:19:34,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4467 Valid, 12978 Invalid, 11610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4570 Valid, 7040 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-12-18 08:19:34,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13348 states. [2021-12-18 08:19:34,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13348 to 9608. [2021-12-18 08:19:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9608 states, 6558 states have (on average 1.2917047880451358) internal successors, (8471), 6688 states have internal predecessors, (8471), 2519 states have call successors, (2519), 531 states have call predecessors, (2519), 530 states have return successors, (2522), 2475 states have call predecessors, (2522), 2518 states have call successors, (2522) [2021-12-18 08:19:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9608 states to 9608 states and 13512 transitions. [2021-12-18 08:19:34,778 INFO L78 Accepts]: Start accepts. Automaton has 9608 states and 13512 transitions. Word has length 402 [2021-12-18 08:19:34,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:19:34,778 INFO L470 AbstractCegarLoop]: Abstraction has 9608 states and 13512 transitions. [2021-12-18 08:19:34,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 5 states have internal predecessors, (143), 3 states have call successors, (42), 7 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-12-18 08:19:34,779 INFO L276 IsEmpty]: Start isEmpty. Operand 9608 states and 13512 transitions. [2021-12-18 08:19:34,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-18 08:19:34,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:19:34,801 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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] [2021-12-18 08:19:34,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 08:19:34,801 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:19:34,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:19:34,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1179725164, now seen corresponding path program 1 times [2021-12-18 08:19:34,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:19:34,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230506150] [2021-12-18 08:19:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:34,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:19:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:19:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:19:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:19:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:19:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:19:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:19:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:19:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:19:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:19:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:19:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:19:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:19:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:19:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:19:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 08:19:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 08:19:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-18 08:19:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-18 08:19:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-18 08:19:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-18 08:19:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-18 08:19:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-18 08:19:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-18 08:19:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-12-18 08:19:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-12-18 08:19:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-18 08:19:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-12-18 08:19:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-18 08:19:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-12-18 08:19:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:19:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-12-18 08:19:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:19:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-12-18 08:19:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2021-12-18 08:19:35,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:19:35,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230506150] [2021-12-18 08:19:35,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230506150] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:19:35,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093489244] [2021-12-18 08:19:35,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:35,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:19:35,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:19:35,419 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) [2021-12-18 08:19:35,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 08:19:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:36,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 3343 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 08:19:36,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:19:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2021-12-18 08:19:36,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:19:36,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093489244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:19:36,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 08:19:36,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2021-12-18 08:19:36,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204552843] [2021-12-18 08:19:36,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:19:36,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 08:19:36,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:19:36,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 08:19:36,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-12-18 08:19:36,896 INFO L87 Difference]: Start difference. First operand 9608 states and 13512 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 3 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-12-18 08:19:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:19:37,764 INFO L93 Difference]: Finished difference Result 21650 states and 30536 transitions. [2021-12-18 08:19:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 08:19:37,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 3 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 404 [2021-12-18 08:19:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:19:37,811 INFO L225 Difference]: With dead ends: 21650 [2021-12-18 08:19:37,811 INFO L226 Difference]: Without dead ends: 12084 [2021-12-18 08:19:37,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-18 08:19:37,842 INFO L933 BasicCegarLoop]: 4082 mSDtfsCounter, 2992 mSDsluCounter, 9903 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2994 SdHoareTripleChecker+Valid, 13985 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 08:19:37,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2994 Valid, 13985 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 08:19:37,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12084 states. [2021-12-18 08:19:38,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12084 to 9600. [2021-12-18 08:19:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9600 states, 6554 states have (on average 1.2917302410741531) internal successors, (8466), 6682 states have internal predecessors, (8466), 2515 states have call successors, (2515), 531 states have call predecessors, (2515), 530 states have return successors, (2518), 2471 states have call predecessors, (2518), 2514 states have call successors, (2518) [2021-12-18 08:19:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9600 states to 9600 states and 13499 transitions. [2021-12-18 08:19:38,301 INFO L78 Accepts]: Start accepts. Automaton has 9600 states and 13499 transitions. Word has length 404 [2021-12-18 08:19:38,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:19:38,301 INFO L470 AbstractCegarLoop]: Abstraction has 9600 states and 13499 transitions. [2021-12-18 08:19:38,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 3 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-12-18 08:19:38,302 INFO L276 IsEmpty]: Start isEmpty. Operand 9600 states and 13499 transitions. [2021-12-18 08:19:38,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-12-18 08:19:38,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:19:38,321 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:19:38,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 08:19:38,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:19:38,548 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:19:38,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:19:38,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1972911624, now seen corresponding path program 1 times [2021-12-18 08:19:38,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:19:38,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569840353] [2021-12-18 08:19:38,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:38,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:19:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:19:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:19:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:19:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:19:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:19:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:19:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:19:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:19:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:19:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:19:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:19:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:19:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:19:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:19:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 08:19:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 08:19:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-18 08:19:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-18 08:19:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-18 08:19:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 08:19:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-12-18 08:19:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-18 08:19:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-12-18 08:19:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-18 08:19:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-12-18 08:19:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:38,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-12-18 08:19:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:39,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-18 08:19:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:39,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2021-12-18 08:19:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:39,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-12-18 08:19:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:39,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:19:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:39,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-12-18 08:19:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:39,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:19:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:39,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2021-12-18 08:19:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:39,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2021-12-18 08:19:39,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:19:39,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569840353] [2021-12-18 08:19:39,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569840353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:19:39,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:19:39,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 08:19:39,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222332930] [2021-12-18 08:19:39,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:19:39,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 08:19:39,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:19:39,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 08:19:39,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-18 08:19:39,047 INFO L87 Difference]: Start difference. First operand 9600 states and 13499 transitions. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (42), 7 states have call predecessors, (42), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-18 08:19:42,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:19:42,908 INFO L93 Difference]: Finished difference Result 20757 states and 29404 transitions. [2021-12-18 08:19:42,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 08:19:42,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (42), 7 states have call predecessors, (42), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 433 [2021-12-18 08:19:42,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:19:42,961 INFO L225 Difference]: With dead ends: 20757 [2021-12-18 08:19:42,961 INFO L226 Difference]: Without dead ends: 11199 [2021-12-18 08:19:42,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-12-18 08:19:42,996 INFO L933 BasicCegarLoop]: 1873 mSDtfsCounter, 1538 mSDsluCounter, 4251 mSDsCounter, 0 mSdLazyCounter, 3197 mSolverCounterSat, 1786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 6124 SdHoareTripleChecker+Invalid, 4983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1786 IncrementalHoareTripleChecker+Valid, 3197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-18 08:19:42,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1638 Valid, 6124 Invalid, 4983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1786 Valid, 3197 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-18 08:19:43,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11199 states. [2021-12-18 08:19:43,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11199 to 9602. [2021-12-18 08:19:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9602 states, 6556 states have (on average 1.291641244661379) internal successors, (8468), 6684 states have internal predecessors, (8468), 2515 states have call successors, (2515), 531 states have call predecessors, (2515), 530 states have return successors, (2518), 2471 states have call predecessors, (2518), 2514 states have call successors, (2518) [2021-12-18 08:19:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9602 states to 9602 states and 13501 transitions. [2021-12-18 08:19:43,436 INFO L78 Accepts]: Start accepts. Automaton has 9602 states and 13501 transitions. Word has length 433 [2021-12-18 08:19:43,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:19:43,436 INFO L470 AbstractCegarLoop]: Abstraction has 9602 states and 13501 transitions. [2021-12-18 08:19:43,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (42), 7 states have call predecessors, (42), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-18 08:19:43,437 INFO L276 IsEmpty]: Start isEmpty. Operand 9602 states and 13501 transitions. [2021-12-18 08:19:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-12-18 08:19:43,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:19:43,457 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:19:43,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 08:19:43,458 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:19:43,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:19:43,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2038070134, now seen corresponding path program 1 times [2021-12-18 08:19:43,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:19:43,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288075185] [2021-12-18 08:19:43,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:43,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:19:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:19:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:19:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:19:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:19:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:19:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:19:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:19:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:19:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:19:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:19:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:19:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:19:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:43,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:19:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:19:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 08:19:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 08:19:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-18 08:19:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-18 08:19:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-18 08:19:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 08:19:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-12-18 08:19:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-18 08:19:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-12-18 08:19:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-18 08:19:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-12-18 08:19:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-12-18 08:19:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-18 08:19:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2021-12-18 08:19:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-12-18 08:19:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:19:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-12-18 08:19:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:19:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2021-12-18 08:19:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2021-12-18 08:19:44,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:19:44,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288075185] [2021-12-18 08:19:44,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288075185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:19:44,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:19:44,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 08:19:44,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402169395] [2021-12-18 08:19:44,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:19:44,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 08:19:44,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:19:44,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 08:19:44,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-18 08:19:44,204 INFO L87 Difference]: Start difference. First operand 9602 states and 13501 transitions. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (42), 7 states have call predecessors, (42), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-18 08:19:48,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:19:48,937 INFO L93 Difference]: Finished difference Result 20763 states and 29410 transitions. [2021-12-18 08:19:48,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 08:19:48,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (42), 7 states have call predecessors, (42), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 433 [2021-12-18 08:19:48,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:19:48,982 INFO L225 Difference]: With dead ends: 20763 [2021-12-18 08:19:48,983 INFO L226 Difference]: Without dead ends: 11203 [2021-12-18 08:19:49,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-12-18 08:19:49,015 INFO L933 BasicCegarLoop]: 1862 mSDtfsCounter, 1444 mSDsluCounter, 4846 mSDsCounter, 0 mSdLazyCounter, 3829 mSolverCounterSat, 1734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 6708 SdHoareTripleChecker+Invalid, 5563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1734 IncrementalHoareTripleChecker+Valid, 3829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-18 08:19:49,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 6708 Invalid, 5563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1734 Valid, 3829 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-18 08:19:49,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11203 states. [2021-12-18 08:19:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11203 to 9604. [2021-12-18 08:19:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9604 states, 6558 states have (on average 1.2915523025312596) internal successors, (8470), 6686 states have internal predecessors, (8470), 2515 states have call successors, (2515), 531 states have call predecessors, (2515), 530 states have return successors, (2518), 2471 states have call predecessors, (2518), 2514 states have call successors, (2518) [2021-12-18 08:19:49,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9604 states to 9604 states and 13503 transitions. [2021-12-18 08:19:49,581 INFO L78 Accepts]: Start accepts. Automaton has 9604 states and 13503 transitions. Word has length 433 [2021-12-18 08:19:49,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:19:49,582 INFO L470 AbstractCegarLoop]: Abstraction has 9604 states and 13503 transitions. [2021-12-18 08:19:49,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (42), 7 states have call predecessors, (42), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-18 08:19:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 9604 states and 13503 transitions. [2021-12-18 08:19:49,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2021-12-18 08:19:49,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:19:49,602 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1] [2021-12-18 08:19:49,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 08:19:49,603 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:19:49,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:19:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1547408297, now seen corresponding path program 1 times [2021-12-18 08:19:49,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:19:49,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875858255] [2021-12-18 08:19:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:49,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:19:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:19:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:19:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:19:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:19:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:19:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:19:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:19:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:19:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:19:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:19:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:19:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:19:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:49,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:19:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:19:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 08:19:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 08:19:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-18 08:19:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-18 08:19:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 08:19:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-18 08:19:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-12-18 08:19:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-12-18 08:19:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-18 08:19:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-12-18 08:19:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-12-18 08:19:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-12-18 08:19:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-12-18 08:19:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:19:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2021-12-18 08:19:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:19:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-12-18 08:19:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1049 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2021-12-18 08:19:50,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:19:50,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875858255] [2021-12-18 08:19:50,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875858255] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:19:50,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308893185] [2021-12-18 08:19:50,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:50,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:19:50,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:19:50,194 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) [2021-12-18 08:19:50,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 08:19:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:51,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 3729 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 08:19:51,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:19:51,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1049 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2021-12-18 08:19:51,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:19:51,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308893185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:19:51,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 08:19:51,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-18 08:19:51,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278082735] [2021-12-18 08:19:51,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:19:51,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 08:19:51,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:19:51,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 08:19:51,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-18 08:19:51,877 INFO L87 Difference]: Start difference. First operand 9604 states and 13503 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-18 08:19:52,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:19:52,261 INFO L93 Difference]: Finished difference Result 22274 states and 31835 transitions. [2021-12-18 08:19:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 08:19:52,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 420 [2021-12-18 08:19:52,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:19:52,332 INFO L225 Difference]: With dead ends: 22274 [2021-12-18 08:19:52,332 INFO L226 Difference]: Without dead ends: 12712 [2021-12-18 08:19:52,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-18 08:19:52,494 INFO L933 BasicCegarLoop]: 2988 mSDtfsCounter, 554 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 5250 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 08:19:52,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 5250 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 08:19:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12712 states. [2021-12-18 08:19:52,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12712 to 9606. [2021-12-18 08:19:52,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9606 states, 6560 states have (on average 1.2914634146341464) internal successors, (8472), 6688 states have internal predecessors, (8472), 2515 states have call successors, (2515), 531 states have call predecessors, (2515), 530 states have return successors, (2518), 2471 states have call predecessors, (2518), 2514 states have call successors, (2518) [2021-12-18 08:19:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9606 states to 9606 states and 13505 transitions. [2021-12-18 08:19:53,015 INFO L78 Accepts]: Start accepts. Automaton has 9606 states and 13505 transitions. Word has length 420 [2021-12-18 08:19:53,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:19:53,016 INFO L470 AbstractCegarLoop]: Abstraction has 9606 states and 13505 transitions. [2021-12-18 08:19:53,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-18 08:19:53,016 INFO L276 IsEmpty]: Start isEmpty. Operand 9606 states and 13505 transitions. [2021-12-18 08:19:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-12-18 08:19:53,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:19:53,041 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:19:53,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 08:19:53,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-18 08:19:53,247 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:19:53,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:19:53,248 INFO L85 PathProgramCache]: Analyzing trace with hash -336581228, now seen corresponding path program 1 times [2021-12-18 08:19:53,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:19:53,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253957292] [2021-12-18 08:19:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:53,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:19:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:19:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:19:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:19:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:19:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:19:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:19:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:19:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:19:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:19:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:19:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:19:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:19:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:19:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:19:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 08:19:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 08:19:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-18 08:19:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-18 08:19:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-12-18 08:19:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 08:19:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 08:19:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 08:19:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-18 08:19:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-18 08:19:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:19:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-12-18 08:19:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-12-18 08:19:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2021-12-18 08:19:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-12-18 08:19:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2021-12-18 08:19:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-12-18 08:19:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-12-18 08:19:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:19:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-12-18 08:19:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:19:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2021-12-18 08:19:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:19:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2021-12-18 08:19:53,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:19:53,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253957292] [2021-12-18 08:19:53,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253957292] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:19:53,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633395889] [2021-12-18 08:19:53,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:19:53,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:19:53,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:19:53,840 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) [2021-12-18 08:19:53,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 08:19:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:19:54,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 3857 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 08:19:54,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:19:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 192 proven. 1 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2021-12-18 08:19:55,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 08:19:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2021-12-18 08:19:56,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633395889] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 08:19:56,101 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 08:19:56,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 12 [2021-12-18 08:19:56,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823784098] [2021-12-18 08:19:56,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 08:19:56,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 08:19:56,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:19:56,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 08:19:56,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-18 08:19:56,104 INFO L87 Difference]: Start difference. First operand 9606 states and 13505 transitions. Second operand has 12 states, 12 states have (on average 19.583333333333332) internal successors, (235), 7 states have internal predecessors, (235), 2 states have call successors, (92), 7 states have call predecessors, (92), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-12-18 08:20:00,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:20:00,676 INFO L93 Difference]: Finished difference Result 20783 states and 29434 transitions. [2021-12-18 08:20:00,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 08:20:00,676 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.583333333333332) internal successors, (235), 7 states have internal predecessors, (235), 2 states have call successors, (92), 7 states have call predecessors, (92), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 450 [2021-12-18 08:20:00,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:20:00,718 INFO L225 Difference]: With dead ends: 20783 [2021-12-18 08:20:00,719 INFO L226 Difference]: Without dead ends: 11219 [2021-12-18 08:20:00,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1022 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-12-18 08:20:00,744 INFO L933 BasicCegarLoop]: 1884 mSDtfsCounter, 1783 mSDsluCounter, 5707 mSDsCounter, 0 mSdLazyCounter, 3896 mSolverCounterSat, 2247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 7591 SdHoareTripleChecker+Invalid, 6143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2247 IncrementalHoareTripleChecker+Valid, 3896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-18 08:20:00,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1882 Valid, 7591 Invalid, 6143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2247 Valid, 3896 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-18 08:20:00,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11219 states. [2021-12-18 08:20:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11219 to 9624. [2021-12-18 08:20:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9624 states, 6578 states have (on average 1.2906658558832471) internal successors, (8490), 6706 states have internal predecessors, (8490), 2515 states have call successors, (2515), 531 states have call predecessors, (2515), 530 states have return successors, (2518), 2471 states have call predecessors, (2518), 2514 states have call successors, (2518) [2021-12-18 08:20:01,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9624 states to 9624 states and 13523 transitions. [2021-12-18 08:20:01,168 INFO L78 Accepts]: Start accepts. Automaton has 9624 states and 13523 transitions. Word has length 450 [2021-12-18 08:20:01,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:20:01,169 INFO L470 AbstractCegarLoop]: Abstraction has 9624 states and 13523 transitions. [2021-12-18 08:20:01,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.583333333333332) internal successors, (235), 7 states have internal predecessors, (235), 2 states have call successors, (92), 7 states have call predecessors, (92), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-12-18 08:20:01,169 INFO L276 IsEmpty]: Start isEmpty. Operand 9624 states and 13523 transitions. [2021-12-18 08:20:01,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-12-18 08:20:01,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:20:01,189 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:20:01,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 08:20:01,415 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,SelfDestructingSolverStorable16 [2021-12-18 08:20:01,416 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:20:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:20:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1635605088, now seen corresponding path program 1 times [2021-12-18 08:20:01,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:20:01,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560485320] [2021-12-18 08:20:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:20:01,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:20:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:20:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:20:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:20:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:20:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:20:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:20:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:20:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:20:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:20:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:20:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:20:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:20:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:20:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:20:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 08:20:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 08:20:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-18 08:20:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-12-18 08:20:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-18 08:20:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 08:20:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 08:20:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 08:20:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-12-18 08:20:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-12-18 08:20:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-18 08:20:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2021-12-18 08:20:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-12-18 08:20:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2021-12-18 08:20:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:01,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-12-18 08:20:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:02,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2021-12-18 08:20:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:02,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2021-12-18 08:20:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:02,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:20:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:02,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2021-12-18 08:20:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:02,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:20:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:02,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2021-12-18 08:20:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:02,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2021-12-18 08:20:02,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:20:02,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560485320] [2021-12-18 08:20:02,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560485320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:20:02,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:20:02,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 08:20:02,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597517632] [2021-12-18 08:20:02,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:20:02,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 08:20:02,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:20:02,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 08:20:02,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-18 08:20:02,052 INFO L87 Difference]: Start difference. First operand 9624 states and 13523 transitions. Second operand has 10 states, 10 states have (on average 17.4) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (44), 7 states have call predecessors, (44), 2 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-18 08:20:07,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:20:07,526 INFO L93 Difference]: Finished difference Result 23941 states and 34685 transitions. [2021-12-18 08:20:07,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 08:20:07,526 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.4) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (44), 7 states have call predecessors, (44), 2 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) Word has length 461 [2021-12-18 08:20:07,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:20:07,583 INFO L225 Difference]: With dead ends: 23941 [2021-12-18 08:20:07,583 INFO L226 Difference]: Without dead ends: 14359 [2021-12-18 08:20:07,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-12-18 08:20:07,618 INFO L933 BasicCegarLoop]: 2799 mSDtfsCounter, 2784 mSDsluCounter, 10220 mSDsCounter, 0 mSdLazyCounter, 4532 mSolverCounterSat, 2819 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 13019 SdHoareTripleChecker+Invalid, 7351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2819 IncrementalHoareTripleChecker+Valid, 4532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-18 08:20:07,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3087 Valid, 13019 Invalid, 7351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2819 Valid, 4532 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-18 08:20:07,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14359 states. [2021-12-18 08:20:08,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14359 to 9632. [2021-12-18 08:20:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9632 states, 6584 states have (on average 1.290400972053463) internal successors, (8496), 6712 states have internal predecessors, (8496), 2515 states have call successors, (2515), 531 states have call predecessors, (2515), 532 states have return successors, (2524), 2473 states have call predecessors, (2524), 2514 states have call successors, (2524) [2021-12-18 08:20:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9632 states to 9632 states and 13535 transitions. [2021-12-18 08:20:08,084 INFO L78 Accepts]: Start accepts. Automaton has 9632 states and 13535 transitions. Word has length 461 [2021-12-18 08:20:08,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:20:08,085 INFO L470 AbstractCegarLoop]: Abstraction has 9632 states and 13535 transitions. [2021-12-18 08:20:08,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.4) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (44), 7 states have call predecessors, (44), 2 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-18 08:20:08,085 INFO L276 IsEmpty]: Start isEmpty. Operand 9632 states and 13535 transitions. [2021-12-18 08:20:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2021-12-18 08:20:08,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:20:08,100 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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] [2021-12-18 08:20:08,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-18 08:20:08,100 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:20:08,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:20:08,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1861844994, now seen corresponding path program 1 times [2021-12-18 08:20:08,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:20:08,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743117780] [2021-12-18 08:20:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:20:08,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:20:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:20:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:20:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:20:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:20:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:20:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:20:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:20:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:20:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:20:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:20:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:20:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:20:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:20:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:20:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 08:20:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 08:20:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-18 08:20:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-12-18 08:20:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-18 08:20:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 08:20:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 08:20:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 08:20:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-12-18 08:20:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-18 08:20:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-12-18 08:20:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-18 08:20:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-12-18 08:20:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-12-18 08:20:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-12-18 08:20:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2021-12-18 08:20:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-12-18 08:20:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2021-12-18 08:20:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2021-12-18 08:20:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:20:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-12-18 08:20:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:20:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-12-18 08:20:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1084 trivial. 0 not checked. [2021-12-18 08:20:08,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:20:08,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743117780] [2021-12-18 08:20:08,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743117780] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:20:08,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004050760] [2021-12-18 08:20:08,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:20:08,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:20:08,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:20:08,852 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) [2021-12-18 08:20:08,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 08:20:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:09,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 4030 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 08:20:09,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:20:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2021-12-18 08:20:10,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:20:10,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004050760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:20:10,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 08:20:10,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-18 08:20:10,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952500102] [2021-12-18 08:20:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:20:10,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 08:20:10,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:20:10,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 08:20:10,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-18 08:20:10,519 INFO L87 Difference]: Start difference. First operand 9632 states and 13535 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2021-12-18 08:20:11,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:20:11,012 INFO L93 Difference]: Finished difference Result 24370 states and 34245 transitions. [2021-12-18 08:20:11,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 08:20:11,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 475 [2021-12-18 08:20:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:20:11,068 INFO L225 Difference]: With dead ends: 24370 [2021-12-18 08:20:11,068 INFO L226 Difference]: Without dead ends: 14780 [2021-12-18 08:20:11,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-18 08:20:11,099 INFO L933 BasicCegarLoop]: 2407 mSDtfsCounter, 1682 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 4327 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:20:11,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1682 Valid, 4327 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 08:20:11,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14780 states. [2021-12-18 08:20:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14780 to 14766. [2021-12-18 08:20:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14766 states, 10156 states have (on average 1.2850531705395825) internal successors, (13051), 10351 states have internal predecessors, (13051), 3790 states have call successors, (3790), 817 states have call predecessors, (3790), 819 states have return successors, (3807), 3723 states have call predecessors, (3807), 3789 states have call successors, (3807) [2021-12-18 08:20:11,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14766 states to 14766 states and 20648 transitions. [2021-12-18 08:20:11,813 INFO L78 Accepts]: Start accepts. Automaton has 14766 states and 20648 transitions. Word has length 475 [2021-12-18 08:20:11,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:20:11,814 INFO L470 AbstractCegarLoop]: Abstraction has 14766 states and 20648 transitions. [2021-12-18 08:20:11,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2021-12-18 08:20:11,814 INFO L276 IsEmpty]: Start isEmpty. Operand 14766 states and 20648 transitions. [2021-12-18 08:20:11,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2021-12-18 08:20:11,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:20:11,835 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:20:11,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-18 08:20:12,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:20:12,037 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:20:12,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:20:12,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1662912194, now seen corresponding path program 1 times [2021-12-18 08:20:12,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:20:12,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839172771] [2021-12-18 08:20:12,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:20:12,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:20:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:20:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:20:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:20:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:20:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:20:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:20:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:20:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:20:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:20:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:20:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:20:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:20:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:20:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:20:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 08:20:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 08:20:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-18 08:20:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-12-18 08:20:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-18 08:20:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 08:20:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 08:20:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 08:20:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-12-18 08:20:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-18 08:20:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-12-18 08:20:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-12-18 08:20:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2021-12-18 08:20:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-12-18 08:20:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-12-18 08:20:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2021-12-18 08:20:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2021-12-18 08:20:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:20:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2021-12-18 08:20:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:20:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-12-18 08:20:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2021-12-18 08:20:12,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:20:12,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839172771] [2021-12-18 08:20:12,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839172771] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:20:12,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513282962] [2021-12-18 08:20:12,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:20:12,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:20:12,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:20:12,656 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) [2021-12-18 08:20:12,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 08:20:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:13,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 3955 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 08:20:13,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:20:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 192 proven. 22 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2021-12-18 08:20:14,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 08:20:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2021-12-18 08:20:14,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513282962] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 08:20:14,991 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 08:20:14,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2021-12-18 08:20:14,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922972943] [2021-12-18 08:20:14,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 08:20:14,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-18 08:20:14,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:20:14,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-18 08:20:14,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-12-18 08:20:14,993 INFO L87 Difference]: Start difference. First operand 14766 states and 20648 transitions. Second operand has 15 states, 15 states have (on average 17.2) internal successors, (258), 10 states have internal predecessors, (258), 3 states have call successors, (93), 7 states have call predecessors, (93), 2 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2021-12-18 08:20:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:20:22,087 INFO L93 Difference]: Finished difference Result 40848 states and 59469 transitions. [2021-12-18 08:20:22,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-18 08:20:22,088 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.2) internal successors, (258), 10 states have internal predecessors, (258), 3 states have call successors, (93), 7 states have call predecessors, (93), 2 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) Word has length 460 [2021-12-18 08:20:22,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:20:22,192 INFO L225 Difference]: With dead ends: 40848 [2021-12-18 08:20:22,192 INFO L226 Difference]: Without dead ends: 26124 [2021-12-18 08:20:22,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1068 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2021-12-18 08:20:22,239 INFO L933 BasicCegarLoop]: 2749 mSDtfsCounter, 3251 mSDsluCounter, 11310 mSDsCounter, 0 mSdLazyCounter, 6300 mSolverCounterSat, 2249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3776 SdHoareTripleChecker+Valid, 14059 SdHoareTripleChecker+Invalid, 8549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2249 IncrementalHoareTripleChecker+Valid, 6300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-18 08:20:22,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3776 Valid, 14059 Invalid, 8549 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2249 Valid, 6300 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-12-18 08:20:22,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26124 states. [2021-12-18 08:20:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26124 to 14814. [2021-12-18 08:20:23,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14814 states, 10198 states have (on average 1.2844675426554226) internal successors, (13099), 10390 states have internal predecessors, (13099), 3796 states have call successors, (3796), 817 states have call predecessors, (3796), 819 states have return successors, (3819), 3732 states have call predecessors, (3819), 3795 states have call successors, (3819) [2021-12-18 08:20:23,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14814 states to 14814 states and 20714 transitions. [2021-12-18 08:20:23,189 INFO L78 Accepts]: Start accepts. Automaton has 14814 states and 20714 transitions. Word has length 460 [2021-12-18 08:20:23,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:20:23,189 INFO L470 AbstractCegarLoop]: Abstraction has 14814 states and 20714 transitions. [2021-12-18 08:20:23,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.2) internal successors, (258), 10 states have internal predecessors, (258), 3 states have call successors, (93), 7 states have call predecessors, (93), 2 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2021-12-18 08:20:23,189 INFO L276 IsEmpty]: Start isEmpty. Operand 14814 states and 20714 transitions. [2021-12-18 08:20:23,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-12-18 08:20:23,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:20:23,211 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1] [2021-12-18 08:20:23,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-18 08:20:23,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:20:23,420 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:20:23,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:20:23,420 INFO L85 PathProgramCache]: Analyzing trace with hash 620175313, now seen corresponding path program 1 times [2021-12-18 08:20:23,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:20:23,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537393495] [2021-12-18 08:20:23,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:20:23,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:20:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:20:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:20:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:20:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:20:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:20:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:20:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:20:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:20:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:20:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:20:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:20:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:20:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:20:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:20:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:23,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 08:20:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 08:20:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-18 08:20:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-18 08:20:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-18 08:20:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 08:20:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 08:20:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 08:20:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-18 08:20:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 08:20:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 08:20:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 08:20:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-12-18 08:20:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-12-18 08:20:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2021-12-18 08:20:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-12-18 08:20:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2021-12-18 08:20:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2021-12-18 08:20:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2021-12-18 08:20:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2021-12-18 08:20:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2021-12-18 08:20:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:20:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2021-12-18 08:20:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:20:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2021-12-18 08:20:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:24,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1154 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1144 trivial. 0 not checked. [2021-12-18 08:20:24,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:20:24,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537393495] [2021-12-18 08:20:24,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537393495] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:20:24,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786581827] [2021-12-18 08:20:24,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:20:24,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:20:24,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:20:24,226 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) [2021-12-18 08:20:24,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 08:20:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:26,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 4141 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-18 08:20:26,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:20:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1154 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 984 trivial. 0 not checked. [2021-12-18 08:20:26,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:20:26,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786581827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:20:26,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 08:20:26,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 11 [2021-12-18 08:20:26,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362894385] [2021-12-18 08:20:26,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:20:26,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 08:20:26,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:20:26,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 08:20:26,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-18 08:20:26,699 INFO L87 Difference]: Start difference. First operand 14814 states and 20714 transitions. Second operand has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 5 states have internal predecessors, (184), 2 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (42), 3 states have call predecessors, (42), 2 states have call successors, (42) [2021-12-18 08:20:27,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:20:27,968 INFO L93 Difference]: Finished difference Result 31335 states and 44047 transitions. [2021-12-18 08:20:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 08:20:27,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 5 states have internal predecessors, (184), 2 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (42), 3 states have call predecessors, (42), 2 states have call successors, (42) Word has length 491 [2021-12-18 08:20:27,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:20:28,029 INFO L225 Difference]: With dead ends: 31335 [2021-12-18 08:20:28,030 INFO L226 Difference]: Without dead ends: 16563 [2021-12-18 08:20:28,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 623 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-18 08:20:28,064 INFO L933 BasicCegarLoop]: 3031 mSDtfsCounter, 1144 mSDsluCounter, 11134 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 14165 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 08:20:28,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1275 Valid, 14165 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 08:20:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16563 states. [2021-12-18 08:20:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16563 to 14829. [2021-12-18 08:20:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14829 states, 10210 states have (on average 1.2841332027424095) internal successors, (13111), 10402 states have internal predecessors, (13111), 3796 states have call successors, (3796), 817 states have call predecessors, (3796), 822 states have return successors, (3829), 3735 states have call predecessors, (3829), 3795 states have call successors, (3829) [2021-12-18 08:20:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14829 states to 14829 states and 20736 transitions. [2021-12-18 08:20:28,672 INFO L78 Accepts]: Start accepts. Automaton has 14829 states and 20736 transitions. Word has length 491 [2021-12-18 08:20:28,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:20:28,672 INFO L470 AbstractCegarLoop]: Abstraction has 14829 states and 20736 transitions. [2021-12-18 08:20:28,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 5 states have internal predecessors, (184), 2 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (42), 3 states have call predecessors, (42), 2 states have call successors, (42) [2021-12-18 08:20:28,672 INFO L276 IsEmpty]: Start isEmpty. Operand 14829 states and 20736 transitions. [2021-12-18 08:20:28,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2021-12-18 08:20:28,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:20:28,693 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2021-12-18 08:20:28,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 08:20:28,894 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,SelfDestructingSolverStorable20 [2021-12-18 08:20:28,894 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:20:28,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:20:28,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1489006082, now seen corresponding path program 1 times [2021-12-18 08:20:28,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:20:28,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99034033] [2021-12-18 08:20:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:20:28,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:20:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:20:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:20:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:20:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:20:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:20:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:20:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:20:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:20:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:20:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:20:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:20:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 08:20:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:20:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 08:20:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 08:20:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:20:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-18 08:20:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-18 08:20:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-18 08:20:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-18 08:20:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 08:20:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 08:20:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 08:20:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2021-12-18 08:20:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 08:20:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 08:20:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 08:20:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-12-18 08:20:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-12-18 08:20:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:20:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2021-12-18 08:20:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2021-12-18 08:20:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-12-18 08:20:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2021-12-18 08:20:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2021-12-18 08:20:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2021-12-18 08:20:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-12-18 08:20:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:20:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2021-12-18 08:20:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 08:20:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2021-12-18 08:20:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:20:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1192 trivial. 0 not checked. [2021-12-18 08:20:29,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:20:29,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99034033] [2021-12-18 08:20:29,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99034033] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:20:29,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137421117] [2021-12-18 08:20:29,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:20:29,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:20:29,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:20:29,599 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) [2021-12-18 08:20:29,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 08:20:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:20:31,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 4167 conjuncts, 360 conjunts are in the unsatisfiable core [2021-12-18 08:20:31,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:20:31,530 INFO L354 Elim1Store]: treesize reduction 95, result has 28.6 percent of original size [2021-12-18 08:20:31,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 41 treesize of output 65 [2021-12-18 08:20:31,664 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 08:20:31,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 08:20:31,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-18 08:20:31,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:20:36,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:20:36,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-18 08:20:49,434 INFO L354 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2021-12-18 08:20:49,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 21 [2021-12-18 08:20:49,454 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 08:20:49,490 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-12-18 08:20:49,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-12-18 08:20:54,405 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 08:20:54,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2021-12-18 08:20:54,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 08:20:54,424 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 08:20:54,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 08:20:54,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:20:54,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-18 08:20:54,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:20:57,098 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-12-18 08:20:57,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-12-18 08:20:57,137 INFO L354 Elim1Store]: treesize reduction 26, result has 46.9 percent of original size [2021-12-18 08:20:57,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 38 [2021-12-18 08:21:00,192 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 08:21:00,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2021-12-18 08:21:00,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 08:21:00,213 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 08:21:00,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 08:21:03,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:21:12,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-18 08:21:12,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:21:23,629 INFO L354 Elim1Store]: treesize reduction 26, result has 46.9 percent of original size [2021-12-18 08:21:23,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 38 [2021-12-18 08:21:23,658 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 08:21:23,708 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-12-18 08:21:23,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-12-18 08:21:29,862 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 08:21:29,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 10 [2021-12-18 08:21:29,875 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 08:21:29,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2021-12-18 08:21:29,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 08:21:34,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 08:21:39,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-18 08:21:39,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 08:21:41,254 INFO L354 Elim1Store]: treesize reduction 26, result has 46.9 percent of original size [2021-12-18 08:21:41,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 38 [2021-12-18 08:21:41,288 INFO L354 Elim1Store]: treesize reduction 50, result has 24.2 percent of original size [2021-12-18 08:21:41,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 30 [2021-12-18 08:21:43,378 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 08:21:43,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2021-12-18 08:21:43,391 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-12-18 08:21:43,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 13 [2021-12-18 08:21:43,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 08:21:50,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:21:55,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-18 08:21:55,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:21:55,369 INFO L354 Elim1Store]: treesize reduction 104, result has 26.2 percent of original size [2021-12-18 08:21:55,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 32 treesize of output 57 [2021-12-18 08:21:55,384 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 08:21:55,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2021-12-18 08:21:59,546 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 08:21:59,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-12-18 08:21:59,559 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-12-18 08:21:59,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 16 [2021-12-18 08:21:59,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 08:21:59,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:22:04,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-18 08:22:04,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:22:04,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:22:04,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:22:04,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:22:04,880 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 08:22:04,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 35 [2021-12-18 08:22:04,964 INFO L354 Elim1Store]: treesize reduction 122, result has 27.4 percent of original size [2021-12-18 08:22:04,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 37 treesize of output 69 [2021-12-18 08:22:11,169 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 08:22:11,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-12-18 08:22:11,188 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-12-18 08:22:11,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 19 [2021-12-18 08:22:11,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 08:22:11,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:22:16,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-18 08:22:16,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:22:16,423 INFO L354 Elim1Store]: treesize reduction 140, result has 28.2 percent of original size [2021-12-18 08:22:16,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 42 treesize of output 81 [2021-12-18 08:22:16,440 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 08:22:16,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 44 [2021-12-18 08:22:21,852 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 08:22:21,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2021-12-18 08:22:21,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 08:22:37,426 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 08:22:37,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2021-12-18 08:22:37,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 08:22:47,119 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 08:22:47,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2021-12-18 08:23:21,436 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 08:23:21,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2021-12-18 08:23:21,495 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-12-18 08:23:21,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 22 [2021-12-18 08:23:21,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 08:23:28,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:23:34,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:23:34,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-18 08:23:36,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:23:36,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:23:36,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:23:36,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:23:36,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:23:36,063 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 08:23:36,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 53 [2021-12-18 08:23:36,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:23:36,144 INFO L354 Elim1Store]: treesize reduction 140, result has 28.2 percent of original size [2021-12-18 08:23:36,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 47 treesize of output 89 [2021-12-18 08:23:46,924 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 08:23:46,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2021-12-18 08:23:46,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:23:46,955 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-12-18 08:23:46,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 25 [2021-12-18 08:23:46,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 08:23:56,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:24:03,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-18 08:24:03,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:24:05,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:24:05,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:24:05,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:24:05,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:24:05,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:24:05,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:24:05,052 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 08:24:05,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 27 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 62 [2021-12-18 08:24:05,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:24:05,181 INFO L354 Elim1Store]: treesize reduction 176, result has 29.3 percent of original size [2021-12-18 08:24:05,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 20 case distinctions, treesize of input 52 treesize of output 105 [2021-12-18 08:24:16,430 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 08:24:16,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 38 [2021-12-18 08:24:16,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:24:16,473 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-12-18 08:24:16,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 28 [2021-12-18 08:24:16,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 08:24:16,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:24:21,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-18 08:24:21,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-18 08:24:22,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 08:24:22,544 INFO L354 Elim1Store]: treesize reduction 194, result has 29.7 percent of original size [2021-12-18 08:24:22,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 22 case distinctions, treesize of input 57 treesize of output 117 [2021-12-18 08:24:22,567 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 08:24:22,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 38 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 71 [2021-12-18 08:24:36,248 WARN L228 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-12-18 08:24:36,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-12-18 08:24:36,250 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-12-18 08:24:36,250 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 08:24:36,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-12-18 08:24:36,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856994686] [2021-12-18 08:24:36,250 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 08:24:36,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 08:24:36,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:24:36,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 08:24:36,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=2422, Unknown=103, NotChecked=0, Total=2862 [2021-12-18 08:24:36,252 INFO L87 Difference]: Start difference. First operand 14829 states and 20736 transitions. Second operand has 11 states, 11 states have (on average 16.0) internal successors, (176), 5 states have internal predecessors, (176), 2 states have call successors, (46), 7 states have call predecessors, (46), 2 states have return successors, (41), 3 states have call predecessors, (41), 2 states have call successors, (41) [2021-12-18 08:24:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-18 08:24:36,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 264 SyntacticMatches, 24 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1357 ImplicationChecksByTransitivity, 201.6s TimeCoverageRelationStatistics Valid=337, Invalid=2422, Unknown=103, NotChecked=0, Total=2862 [2021-12-18 08:24:36,254 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 08:24:36,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 08:24:36,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-18 08:24:36,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:24:36,472 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@47cc2555 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-18 08:24:36,476 INFO L158 Benchmark]: Toolchain (without parser) took 375565.48ms. Allocated memory was 92.3MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 64.1MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 423.5MB. Max. memory is 16.1GB. [2021-12-18 08:24:36,476 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 75.5MB. Free memory was 54.5MB in the beginning and 54.4MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 08:24:36,476 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2079.73ms. Allocated memory was 92.3MB in the beginning and 209.7MB in the end (delta: 117.4MB). Free memory was 63.8MB in the beginning and 112.7MB in the end (delta: -48.9MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. [2021-12-18 08:24:36,476 INFO L158 Benchmark]: Boogie Procedure Inliner took 229.56ms. Allocated memory is still 209.7MB. Free memory was 112.7MB in the beginning and 136.7MB in the end (delta: -24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-18 08:24:36,476 INFO L158 Benchmark]: Boogie Preprocessor took 199.39ms. Allocated memory is still 209.7MB. Free memory was 136.7MB in the beginning and 112.6MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-18 08:24:36,477 INFO L158 Benchmark]: RCFGBuilder took 2893.79ms. Allocated memory was 209.7MB in the beginning and 354.4MB in the end (delta: 144.7MB). Free memory was 112.6MB in the beginning and 199.1MB in the end (delta: -86.5MB). Peak memory consumption was 74.0MB. Max. memory is 16.1GB. [2021-12-18 08:24:36,477 INFO L158 Benchmark]: TraceAbstraction took 370153.50ms. Allocated memory was 354.4MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 198.0MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 296.2MB. Max. memory is 16.1GB. [2021-12-18 08:24:36,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 75.5MB. Free memory was 54.5MB in the beginning and 54.4MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2079.73ms. Allocated memory was 92.3MB in the beginning and 209.7MB in the end (delta: 117.4MB). Free memory was 63.8MB in the beginning and 112.7MB in the end (delta: -48.9MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 229.56ms. Allocated memory is still 209.7MB. Free memory was 112.7MB in the beginning and 136.7MB in the end (delta: -24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 199.39ms. Allocated memory is still 209.7MB. Free memory was 136.7MB in the beginning and 112.6MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2893.79ms. Allocated memory was 209.7MB in the beginning and 354.4MB in the end (delta: 144.7MB). Free memory was 112.6MB in the beginning and 199.1MB in the end (delta: -86.5MB). Peak memory consumption was 74.0MB. Max. memory is 16.1GB. * TraceAbstraction took 370153.50ms. Allocated memory was 354.4MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 198.0MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 296.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@47cc2555 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@47cc2555: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 f5287aa284221e5fd9453b6be2206814d99b5890aba823bfb498c43964518ada --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 08:24:38,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 08:24:38,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 08:24:38,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 08:24:38,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 08:24:38,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 08:24:38,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 08:24:38,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 08:24:38,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 08:24:38,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 08:24:38,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 08:24:38,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 08:24:38,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 08:24:38,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 08:24:38,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 08:24:38,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 08:24:38,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 08:24:38,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 08:24:38,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 08:24:38,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 08:24:38,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 08:24:38,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 08:24:38,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 08:24:38,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 08:24:38,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 08:24:38,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 08:24:38,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 08:24:38,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 08:24:38,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 08:24:38,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 08:24:38,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 08:24:38,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 08:24:38,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 08:24:38,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 08:24:38,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 08:24:38,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 08:24:38,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 08:24:38,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 08:24:38,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 08:24:38,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 08:24:38,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 08:24:38,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-18 08:24:38,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 08:24:38,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 08:24:38,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 08:24:38,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 08:24:38,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 08:24:38,458 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 08:24:38,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 08:24:38,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 08:24:38,459 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 08:24:38,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 08:24:38,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 08:24:38,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 08:24:38,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 08:24:38,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 08:24:38,461 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 08:24:38,461 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-18 08:24:38,461 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-18 08:24:38,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 08:24:38,461 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 08:24:38,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 08:24:38,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 08:24:38,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 08:24:38,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 08:24:38,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 08:24:38,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 08:24:38,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 08:24:38,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 08:24:38,470 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-18 08:24:38,470 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-18 08:24:38,471 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 08:24:38,471 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 08:24:38,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 08:24:38,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 08:24:38,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-18 08:24:38,472 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5287aa284221e5fd9453b6be2206814d99b5890aba823bfb498c43964518ada [2021-12-18 08:24:38,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 08:24:38,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 08:24:38,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 08:24:38,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 08:24:38,788 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 08:24:38,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i [2021-12-18 08:24:38,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455e825a3/2e03745ed56e4f1f855240e8c98fd22e/FLAG36e618034 [2021-12-18 08:24:39,642 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 08:24:39,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i [2021-12-18 08:24:39,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455e825a3/2e03745ed56e4f1f855240e8c98fd22e/FLAG36e618034 [2021-12-18 08:24:39,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455e825a3/2e03745ed56e4f1f855240e8c98fd22e [2021-12-18 08:24:39,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 08:24:39,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 08:24:39,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 08:24:39,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 08:24:39,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 08:24:39,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:24:39" (1/1) ... [2021-12-18 08:24:39,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1322b4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:24:39, skipping insertion in model container [2021-12-18 08:24:39,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:24:39" (1/1) ... [2021-12-18 08:24:39,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 08:24:39,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 08:24:41,486 WARN L230 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i[274049,274062] [2021-12-18 08:24:41,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 08:24:41,584 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-18 08:24:41,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 08:24:41,969 WARN L230 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i[274049,274062] [2021-12-18 08:24:41,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 08:24:42,001 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 08:24:42,368 WARN L230 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i[274049,274062] [2021-12-18 08:24:42,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 08:24:42,543 INFO L208 MainTranslator]: Completed translation [2021-12-18 08:24:42,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:24:42 WrapperNode [2021-12-18 08:24:42,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 08:24:42,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 08:24:42,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 08:24:42,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 08:24:42,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:24:42" (1/1) ... [2021-12-18 08:24:42,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:24:42" (1/1) ... [2021-12-18 08:24:42,752 INFO L137 Inliner]: procedures = 292, calls = 1469, calls flagged for inlining = 144, calls inlined = 134, statements flattened = 3450 [2021-12-18 08:24:42,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 08:24:42,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 08:24:42,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 08:24:42,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 08:24:42,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:24:42" (1/1) ... [2021-12-18 08:24:42,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:24:42" (1/1) ... [2021-12-18 08:24:42,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:24:42" (1/1) ... [2021-12-18 08:24:42,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:24:42" (1/1) ... [2021-12-18 08:24:42,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:24:42" (1/1) ... [2021-12-18 08:24:42,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:24:42" (1/1) ... [2021-12-18 08:24:42,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:24:42" (1/1) ... [2021-12-18 08:24:43,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 08:24:43,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 08:24:43,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 08:24:43,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 08:24:43,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:24:42" (1/1) ... [2021-12-18 08:24:43,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 08:24:43,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:24:43,056 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) [2021-12-18 08:24:43,079 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 [2021-12-18 08:24:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-18 08:24:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-18 08:24:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_3 [2021-12-18 08:24:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_3 [2021-12-18 08:24:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-18 08:24:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 08:24:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-18 08:24:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 08:24:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-18 08:24:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-18 08:24:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 08:24:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 08:24:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_get_stats [2021-12-18 08:24:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_get_stats [2021-12-18 08:24:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 08:24:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 08:24:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-12-18 08:24:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-12-18 08:24:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-18 08:24:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-18 08:24:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-12-18 08:24:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-12-18 08:24:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-18 08:24:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-18 08:24:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_mdio_write [2021-12-18 08:24:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_mdio_write [2021-12-18 08:24:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 08:24:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 08:24:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_read_mib [2021-12-18 08:24:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_read_mib [2021-12-18 08:24:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-18 08:24:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-18 08:24:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_interrupt [2021-12-18 08:24:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_interrupt [2021-12-18 08:24:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-12-18 08:24:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-12-18 08:24:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 08:24:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 08:24:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-18 08:24:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-18 08:24:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-18 08:24:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-18 08:24:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-18 08:24:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-18 08:24:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_set_coalesce [2021-12-18 08:24:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_set_coalesce [2021-12-18 08:24:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 08:24:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 08:24:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-18 08:24:43,104 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-18 08:24:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-12-18 08:24:43,104 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-12-18 08:24:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-18 08:24:43,106 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-18 08:24:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-12-18 08:24:43,106 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-12-18 08:24:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 08:24:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-12-18 08:24:43,106 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-12-18 08:24:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-18 08:24:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-18 08:24:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 08:24:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-18 08:24:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-18 08:24:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-18 08:24:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-18 08:24:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-18 08:24:43,108 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-18 08:24:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_disable_interrupt [2021-12-18 08:24:43,108 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_disable_interrupt [2021-12-18 08:24:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-18 08:24:43,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-18 08:24:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 08:24:43,109 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 08:24:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-12-18 08:24:43,109 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-12-18 08:24:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-18 08:24:43,110 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-18 08:24:43,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-18 08:24:43,110 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_set_multicast_list [2021-12-18 08:24:43,110 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_set_multicast_list [2021-12-18 08:24:43,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-18 08:24:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-18 08:24:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 08:24:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-18 08:24:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 08:24:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_resume [2021-12-18 08:24:43,112 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_resume [2021-12-18 08:24:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-18 08:24:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-18 08:24:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-12-18 08:24:43,113 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_tx_timeout [2021-12-18 08:24:43,113 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_tx_timeout [2021-12-18 08:24:43,114 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-18 08:24:43,114 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-18 08:24:43,114 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-18 08:24:43,114 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-18 08:24:43,114 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_mdio_read [2021-12-18 08:24:43,114 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_mdio_read [2021-12-18 08:24:43,114 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-18 08:24:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-18 08:24:43,115 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_set_rx_buff_len [2021-12-18 08:24:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_set_rx_buff_len [2021-12-18 08:24:43,115 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_restart [2021-12-18 08:24:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_restart [2021-12-18 08:24:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_2 [2021-12-18 08:24:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_2 [2021-12-18 08:24:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-18 08:24:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-18 08:24:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-18 08:24:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-18 08:24:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-18 08:24:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-18 08:24:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-18 08:24:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-18 08:24:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-18 08:24:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-18 08:24:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-18 08:24:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-18 08:24:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_ioctl [2021-12-18 08:24:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_ioctl [2021-12-18 08:24:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-18 08:24:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-18 08:24:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-18 08:24:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-18 08:24:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-18 08:24:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-18 08:24:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-18 08:24:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-12-18 08:24:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-12-18 08:24:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-12-18 08:24:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_write_phy [2021-12-18 08:24:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_write_phy [2021-12-18 08:24:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-18 08:24:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-18 08:24:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 08:24:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 08:24:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_set_mac_address [2021-12-18 08:24:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_set_mac_address [2021-12-18 08:24:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_stop_chip [2021-12-18 08:24:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_stop_chip [2021-12-18 08:24:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 08:24:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 08:24:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 08:24:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_2 [2021-12-18 08:24:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_2 [2021-12-18 08:24:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_read_phy [2021-12-18 08:24:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_read_phy [2021-12-18 08:24:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-18 08:24:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-18 08:24:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 08:24:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-18 08:24:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-18 08:24:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 08:24:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-12-18 08:24:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-12-18 08:24:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-18 08:24:43,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-18 08:24:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2021-12-18 08:24:43,136 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2021-12-18 08:24:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-12-18 08:24:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_poll [2021-12-18 08:24:43,136 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_poll [2021-12-18 08:24:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_change_mtu [2021-12-18 08:24:43,137 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_change_mtu [2021-12-18 08:24:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-18 08:24:43,137 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-18 08:24:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_3 [2021-12-18 08:24:43,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_3 [2021-12-18 08:24:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-18 08:24:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-18 08:24:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_remove_one [2021-12-18 08:24:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_remove_one [2021-12-18 08:24:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-18 08:24:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-18 08:24:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-12-18 08:24:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-12-18 08:24:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure amd8111e_free_skbs [2021-12-18 08:24:43,139 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8111e_free_skbs [2021-12-18 08:24:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-12-18 08:24:43,139 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-12-18 08:24:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-18 08:24:43,140 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-18 08:24:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-12-18 08:24:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-12-18 08:24:43,140 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-12-18 08:24:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-12-18 08:24:43,140 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-12-18 08:24:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 08:24:43,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 08:24:43,859 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 08:24:43,862 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 08:24:49,357 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 08:25:11,854 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 08:25:11,874 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 08:25:11,875 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-18 08:25:11,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:25:11 BoogieIcfgContainer [2021-12-18 08:25:11,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 08:25:11,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 08:25:11,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 08:25:11,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 08:25:11,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 08:24:39" (1/3) ... [2021-12-18 08:25:11,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5135934d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:25:11, skipping insertion in model container [2021-12-18 08:25:11,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:24:42" (2/3) ... [2021-12-18 08:25:11,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5135934d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:25:11, skipping insertion in model container [2021-12-18 08:25:11,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:25:11" (3/3) ... [2021-12-18 08:25:11,887 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i [2021-12-18 08:25:11,891 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 08:25:11,891 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 08:25:11,956 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 08:25:11,963 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 [2021-12-18 08:25:11,963 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 08:25:12,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 1499 states, 997 states have (on average 1.3069207622868606) internal successors, (1303), 1024 states have internal predecessors, (1303), 421 states have call successors, (421), 80 states have call predecessors, (421), 79 states have return successors, (414), 409 states have call predecessors, (414), 414 states have call successors, (414) [2021-12-18 08:25:12,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-18 08:25:12,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:25:12,047 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 3, 3, 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, 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, 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] [2021-12-18 08:25:12,047 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:25:12,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:25:12,051 INFO L85 PathProgramCache]: Analyzing trace with hash -916983196, now seen corresponding path program 1 times [2021-12-18 08:25:12,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:25:12,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837276002] [2021-12-18 08:25:12,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:25:12,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:25:12,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:25:12,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:25:12,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-18 08:25:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:25:13,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-18 08:25:13,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:25:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-12-18 08:25:14,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:25:14,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:25:14,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837276002] [2021-12-18 08:25:14,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837276002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:25:14,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:25:14,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 08:25:14,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217213549] [2021-12-18 08:25:14,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:25:14,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-18 08:25:14,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:25:14,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-18 08:25:14,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 08:25:14,242 INFO L87 Difference]: Start difference. First operand has 1499 states, 997 states have (on average 1.3069207622868606) internal successors, (1303), 1024 states have internal predecessors, (1303), 421 states have call successors, (421), 80 states have call predecessors, (421), 79 states have return successors, (414), 409 states have call predecessors, (414), 414 states have call successors, (414) Second operand has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 08:25:14,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:25:14,415 INFO L93 Difference]: Finished difference Result 2993 states and 4305 transitions. [2021-12-18 08:25:14,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-18 08:25:14,417 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 234 [2021-12-18 08:25:14,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:25:14,438 INFO L225 Difference]: With dead ends: 2993 [2021-12-18 08:25:14,438 INFO L226 Difference]: Without dead ends: 1475 [2021-12-18 08:25:14,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 08:25:14,453 INFO L933 BasicCegarLoop]: 2132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 08:25:14,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 08:25:14,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-12-18 08:25:14,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1475. [2021-12-18 08:25:14,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 982 states have (on average 1.2922606924643585) internal successors, (1269), 1000 states have internal predecessors, (1269), 414 states have call successors, (414), 79 states have call predecessors, (414), 78 states have return successors, (413), 408 states have call predecessors, (413), 413 states have call successors, (413) [2021-12-18 08:25:14,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2096 transitions. [2021-12-18 08:25:14,588 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2096 transitions. Word has length 234 [2021-12-18 08:25:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:25:14,589 INFO L470 AbstractCegarLoop]: Abstraction has 1475 states and 2096 transitions. [2021-12-18 08:25:14,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 08:25:14,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2096 transitions. [2021-12-18 08:25:14,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-18 08:25:14,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:25:14,602 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 3, 3, 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, 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, 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] [2021-12-18 08:25:14,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-18 08:25:14,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:25:14,803 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:25:14,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:25:14,804 INFO L85 PathProgramCache]: Analyzing trace with hash 200223218, now seen corresponding path program 1 times [2021-12-18 08:25:14,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:25:14,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903939766] [2021-12-18 08:25:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:25:14,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:25:14,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:25:14,807 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:25:14,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-18 08:25:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:25:16,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 08:25:16,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:25:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2021-12-18 08:25:16,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:25:16,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:25:16,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903939766] [2021-12-18 08:25:16,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903939766] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:25:16,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:25:16,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 08:25:16,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584922706] [2021-12-18 08:25:16,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:25:16,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 08:25:16,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:25:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 08:25:16,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 08:25:16,747 INFO L87 Difference]: Start difference. First operand 1475 states and 2096 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 08:25:16,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:25:16,926 INFO L93 Difference]: Finished difference Result 2936 states and 4173 transitions. [2021-12-18 08:25:16,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 08:25:16,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 234 [2021-12-18 08:25:16,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:25:16,938 INFO L225 Difference]: With dead ends: 2936 [2021-12-18 08:25:16,938 INFO L226 Difference]: Without dead ends: 1476 [2021-12-18 08:25:16,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 08:25:16,946 INFO L933 BasicCegarLoop]: 2094 mSDtfsCounter, 3 mSDsluCounter, 4181 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6275 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:25:16,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6275 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 08:25:16,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-12-18 08:25:16,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1476. [2021-12-18 08:25:16,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 983 states have (on average 1.2919633774160733) internal successors, (1270), 1001 states have internal predecessors, (1270), 414 states have call successors, (414), 79 states have call predecessors, (414), 78 states have return successors, (413), 408 states have call predecessors, (413), 413 states have call successors, (413) [2021-12-18 08:25:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2097 transitions. [2021-12-18 08:25:17,012 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2097 transitions. Word has length 234 [2021-12-18 08:25:17,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:25:17,014 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 2097 transitions. [2021-12-18 08:25:17,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 08:25:17,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2097 transitions. [2021-12-18 08:25:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-12-18 08:25:17,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:25:17,034 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 3, 3, 3, 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, 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, 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] [2021-12-18 08:25:17,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-18 08:25:17,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:25:17,248 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:25:17,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:25:17,248 INFO L85 PathProgramCache]: Analyzing trace with hash 326776270, now seen corresponding path program 1 times [2021-12-18 08:25:17,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:25:17,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208481822] [2021-12-18 08:25:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:25:17,250 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:25:17,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:25:17,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:25:17,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-18 08:25:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:25:18,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 08:25:18,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:25:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-18 08:25:19,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 08:25:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2021-12-18 08:25:20,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:25:20,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208481822] [2021-12-18 08:25:20,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208481822] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 08:25:20,054 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 08:25:20,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-18 08:25:20,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327596712] [2021-12-18 08:25:20,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 08:25:20,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 08:25:20,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:25:20,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 08:25:20,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 08:25:20,056 INFO L87 Difference]: Start difference. First operand 1476 states and 2097 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-12-18 08:25:20,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:25:20,464 INFO L93 Difference]: Finished difference Result 2943 states and 4184 transitions. [2021-12-18 08:25:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 08:25:20,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 238 [2021-12-18 08:25:20,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:25:20,473 INFO L225 Difference]: With dead ends: 2943 [2021-12-18 08:25:20,474 INFO L226 Difference]: Without dead ends: 1479 [2021-12-18 08:25:20,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-18 08:25:20,481 INFO L933 BasicCegarLoop]: 2094 mSDtfsCounter, 10 mSDsluCounter, 8362 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10456 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 08:25:20,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 10456 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 08:25:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-12-18 08:25:20,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1479. [2021-12-18 08:25:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 986 states have (on average 1.291075050709939) internal successors, (1273), 1004 states have internal predecessors, (1273), 414 states have call successors, (414), 79 states have call predecessors, (414), 78 states have return successors, (413), 408 states have call predecessors, (413), 413 states have call successors, (413) [2021-12-18 08:25:20,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2100 transitions. [2021-12-18 08:25:20,531 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2100 transitions. Word has length 238 [2021-12-18 08:25:20,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:25:20,531 INFO L470 AbstractCegarLoop]: Abstraction has 1479 states and 2100 transitions. [2021-12-18 08:25:20,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-12-18 08:25:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2100 transitions. [2021-12-18 08:25:20,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-12-18 08:25:20,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:25:20,540 INFO L514 BasicCegarLoop]: trace histogram [12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 3, 3, 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, 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, 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] [2021-12-18 08:25:20,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-18 08:25:20,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:25:20,756 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:25:20,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:25:20,756 INFO L85 PathProgramCache]: Analyzing trace with hash 249447730, now seen corresponding path program 1 times [2021-12-18 08:25:20,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:25:20,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650128367] [2021-12-18 08:25:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:25:20,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:25:20,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:25:20,760 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:25:20,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-18 08:25:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:25:22,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1683 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 08:25:22,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:25:23,179 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-12-18 08:25:23,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:25:23,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:25:23,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650128367] [2021-12-18 08:25:23,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650128367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:25:23,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:25:23,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 08:25:23,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369947460] [2021-12-18 08:25:23,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:25:23,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 08:25:23,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:25:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 08:25:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:25:23,182 INFO L87 Difference]: Start difference. First operand 1479 states and 2100 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 08:25:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:25:23,695 INFO L93 Difference]: Finished difference Result 3867 states and 5466 transitions. [2021-12-18 08:25:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 08:25:23,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 246 [2021-12-18 08:25:23,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:25:23,713 INFO L225 Difference]: With dead ends: 3867 [2021-12-18 08:25:23,713 INFO L226 Difference]: Without dead ends: 2420 [2021-12-18 08:25:23,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:25:23,723 INFO L933 BasicCegarLoop]: 2504 mSDtfsCounter, 1347 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 4463 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 08:25:23,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1347 Valid, 4463 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 08:25:23,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2021-12-18 08:25:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2413. [2021-12-18 08:25:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 1635 states have (on average 1.2954128440366972) internal successors, (2118), 1666 states have internal predecessors, (2118), 640 states have call successors, (640), 138 states have call predecessors, (640), 137 states have return successors, (643), 628 states have call predecessors, (643), 639 states have call successors, (643) [2021-12-18 08:25:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 3401 transitions. [2021-12-18 08:25:23,850 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 3401 transitions. Word has length 246 [2021-12-18 08:25:23,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:25:23,851 INFO L470 AbstractCegarLoop]: Abstraction has 2413 states and 3401 transitions. [2021-12-18 08:25:23,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 08:25:23,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 3401 transitions. [2021-12-18 08:25:23,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-18 08:25:23,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:25:23,860 INFO L514 BasicCegarLoop]: trace histogram [12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 3, 3, 2, 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, 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, 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] [2021-12-18 08:25:23,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-18 08:25:24,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:25:24,076 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:25:24,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:25:24,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1026013741, now seen corresponding path program 1 times [2021-12-18 08:25:24,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:25:24,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168389152] [2021-12-18 08:25:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:25:24,078 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:25:24,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:25:24,079 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:25:24,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-18 08:25:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:25:25,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 08:25:25,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:25:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2021-12-18 08:25:26,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:25:26,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:25:26,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168389152] [2021-12-18 08:25:26,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168389152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:25:26,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:25:26,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 08:25:26,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117357080] [2021-12-18 08:25:26,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:25:26,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 08:25:26,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:25:26,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 08:25:26,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:25:26,431 INFO L87 Difference]: Start difference. First operand 2413 states and 3401 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 08:25:26,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:25:26,852 INFO L93 Difference]: Finished difference Result 6356 states and 8983 transitions. [2021-12-18 08:25:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 08:25:26,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 266 [2021-12-18 08:25:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:25:26,876 INFO L225 Difference]: With dead ends: 6356 [2021-12-18 08:25:26,876 INFO L226 Difference]: Without dead ends: 3975 [2021-12-18 08:25:26,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:25:26,889 INFO L933 BasicCegarLoop]: 3021 mSDtfsCounter, 1692 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 5028 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 08:25:26,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 5028 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 08:25:26,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2021-12-18 08:25:27,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3970. [2021-12-18 08:25:27,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3970 states, 2687 states have (on average 1.2999627837737253) internal successors, (3493), 2741 states have internal predecessors, (3493), 1061 states have call successors, (1061), 222 states have call predecessors, (1061), 221 states have return successors, (1064), 1041 states have call predecessors, (1064), 1060 states have call successors, (1064) [2021-12-18 08:25:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 5618 transitions. [2021-12-18 08:25:27,055 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 5618 transitions. Word has length 266 [2021-12-18 08:25:27,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:25:27,056 INFO L470 AbstractCegarLoop]: Abstraction has 3970 states and 5618 transitions. [2021-12-18 08:25:27,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 08:25:27,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 5618 transitions. [2021-12-18 08:25:27,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-12-18 08:25:27,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:25:27,064 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1] [2021-12-18 08:25:27,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-18 08:25:27,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:25:27,279 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:25:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:25:27,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1569175413, now seen corresponding path program 1 times [2021-12-18 08:25:27,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:25:27,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074375041] [2021-12-18 08:25:27,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:25:27,282 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:25:27,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:25:27,284 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:25:27,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-18 08:25:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:25:29,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 08:25:29,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:25:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2021-12-18 08:25:29,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:25:29,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:25:29,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074375041] [2021-12-18 08:25:29,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074375041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:25:29,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:25:29,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 08:25:29,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99072389] [2021-12-18 08:25:29,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:25:29,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 08:25:29,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:25:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 08:25:29,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:25:29,699 INFO L87 Difference]: Start difference. First operand 3970 states and 5618 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 08:25:29,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:25:29,942 INFO L93 Difference]: Finished difference Result 7894 states and 11181 transitions. [2021-12-18 08:25:29,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 08:25:29,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 294 [2021-12-18 08:25:29,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:25:29,971 INFO L225 Difference]: With dead ends: 7894 [2021-12-18 08:25:29,971 INFO L226 Difference]: Without dead ends: 3970 [2021-12-18 08:25:29,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:25:29,991 INFO L933 BasicCegarLoop]: 2094 mSDtfsCounter, 2092 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:25:29,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2092 Valid, 2094 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 08:25:29,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2021-12-18 08:25:30,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3970. [2021-12-18 08:25:30,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3970 states, 2687 states have (on average 1.2992184592482323) internal successors, (3491), 2741 states have internal predecessors, (3491), 1061 states have call successors, (1061), 222 states have call predecessors, (1061), 221 states have return successors, (1064), 1041 states have call predecessors, (1064), 1060 states have call successors, (1064) [2021-12-18 08:25:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 5616 transitions. [2021-12-18 08:25:30,250 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 5616 transitions. Word has length 294 [2021-12-18 08:25:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:25:30,250 INFO L470 AbstractCegarLoop]: Abstraction has 3970 states and 5616 transitions. [2021-12-18 08:25:30,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-18 08:25:30,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 5616 transitions. [2021-12-18 08:25:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-12-18 08:25:30,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:25:30,261 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:25:30,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-18 08:25:30,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:25:30,484 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:25:30,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:25:30,484 INFO L85 PathProgramCache]: Analyzing trace with hash -605491332, now seen corresponding path program 1 times [2021-12-18 08:25:30,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:25:30,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713033672] [2021-12-18 08:25:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:25:30,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:25:30,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:25:30,487 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:25:30,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-18 08:25:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:25:32,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 08:25:32,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:25:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-12-18 08:25:33,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:25:33,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:25:33,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713033672] [2021-12-18 08:25:33,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713033672] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:25:33,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:25:33,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 08:25:33,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722154672] [2021-12-18 08:25:33,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:25:33,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 08:25:33,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:25:33,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 08:25:33,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:25:33,583 INFO L87 Difference]: Start difference. First operand 3970 states and 5616 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-18 08:25:34,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:25:34,089 INFO L93 Difference]: Finished difference Result 9539 states and 13533 transitions. [2021-12-18 08:25:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 08:25:34,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 343 [2021-12-18 08:25:34,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:25:34,124 INFO L225 Difference]: With dead ends: 9539 [2021-12-18 08:25:34,124 INFO L226 Difference]: Without dead ends: 5615 [2021-12-18 08:25:34,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:25:34,143 INFO L933 BasicCegarLoop]: 3159 mSDtfsCounter, 1780 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 5081 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 08:25:34,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1780 Valid, 5081 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 08:25:34,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5615 states. [2021-12-18 08:25:34,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5615 to 5605. [2021-12-18 08:25:34,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5605 states, 3808 states have (on average 1.3009453781512605) internal successors, (4954), 3885 states have internal predecessors, (4954), 1486 states have call successors, (1486), 311 states have call predecessors, (1486), 310 states have return successors, (1489), 1459 states have call predecessors, (1489), 1485 states have call successors, (1489) [2021-12-18 08:25:34,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5605 states to 5605 states and 7929 transitions. [2021-12-18 08:25:34,509 INFO L78 Accepts]: Start accepts. Automaton has 5605 states and 7929 transitions. Word has length 343 [2021-12-18 08:25:34,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:25:34,512 INFO L470 AbstractCegarLoop]: Abstraction has 5605 states and 7929 transitions. [2021-12-18 08:25:34,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-18 08:25:34,513 INFO L276 IsEmpty]: Start isEmpty. Operand 5605 states and 7929 transitions. [2021-12-18 08:25:34,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-12-18 08:25:34,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:25:34,522 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:25:34,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-18 08:25:34,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:25:34,744 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:25:34,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:25:34,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1511251240, now seen corresponding path program 1 times [2021-12-18 08:25:34,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:25:34,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496150841] [2021-12-18 08:25:34,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:25:34,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:25:34,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:25:34,749 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:25:34,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-18 08:25:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:25:36,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 08:25:36,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:25:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2021-12-18 08:25:37,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:25:37,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:25:37,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496150841] [2021-12-18 08:25:37,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496150841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:25:37,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:25:37,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 08:25:37,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377091152] [2021-12-18 08:25:37,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:25:37,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 08:25:37,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:25:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 08:25:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 08:25:37,425 INFO L87 Difference]: Start difference. First operand 5605 states and 7929 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 08:25:38,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:25:38,765 INFO L93 Difference]: Finished difference Result 13585 states and 19290 transitions. [2021-12-18 08:25:38,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 08:25:38,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 357 [2021-12-18 08:25:38,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:25:38,832 INFO L225 Difference]: With dead ends: 13585 [2021-12-18 08:25:38,832 INFO L226 Difference]: Without dead ends: 8026 [2021-12-18 08:25:38,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 08:25:38,859 INFO L933 BasicCegarLoop]: 3585 mSDtfsCounter, 2546 mSDsluCounter, 5468 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2546 SdHoareTripleChecker+Valid, 9053 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-18 08:25:38,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2546 Valid, 9053 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-18 08:25:38,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8026 states. [2021-12-18 08:25:39,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8026 to 5609. [2021-12-18 08:25:39,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5609 states, 3812 states have (on average 1.3006295907660022) internal successors, (4958), 3889 states have internal predecessors, (4958), 1486 states have call successors, (1486), 311 states have call predecessors, (1486), 310 states have return successors, (1489), 1459 states have call predecessors, (1489), 1485 states have call successors, (1489) [2021-12-18 08:25:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5609 states to 5609 states and 7933 transitions. [2021-12-18 08:25:39,237 INFO L78 Accepts]: Start accepts. Automaton has 5609 states and 7933 transitions. Word has length 357 [2021-12-18 08:25:39,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:25:39,237 INFO L470 AbstractCegarLoop]: Abstraction has 5609 states and 7933 transitions. [2021-12-18 08:25:39,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 08:25:39,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5609 states and 7933 transitions. [2021-12-18 08:25:39,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-12-18 08:25:39,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:25:39,249 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:25:39,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-18 08:25:39,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:25:39,468 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:25:39,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:25:39,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2030509175, now seen corresponding path program 1 times [2021-12-18 08:25:39,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:25:39,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877933129] [2021-12-18 08:25:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:25:39,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:25:39,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:25:39,472 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:25:39,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-18 08:25:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:25:41,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 08:25:41,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:25:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2021-12-18 08:25:42,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:25:42,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:25:42,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877933129] [2021-12-18 08:25:42,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877933129] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:25:42,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:25:42,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 08:25:42,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071472021] [2021-12-18 08:25:42,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:25:42,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 08:25:42,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:25:42,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 08:25:42,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 08:25:42,404 INFO L87 Difference]: Start difference. First operand 5609 states and 7933 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-18 08:25:44,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:25:44,227 INFO L93 Difference]: Finished difference Result 13010 states and 18397 transitions. [2021-12-18 08:25:44,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 08:25:44,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 361 [2021-12-18 08:25:44,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:25:44,260 INFO L225 Difference]: With dead ends: 13010 [2021-12-18 08:25:44,261 INFO L226 Difference]: Without dead ends: 7447 [2021-12-18 08:25:44,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 08:25:44,279 INFO L933 BasicCegarLoop]: 3787 mSDtfsCounter, 2494 mSDsluCounter, 8832 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2495 SdHoareTripleChecker+Valid, 12619 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-18 08:25:44,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2495 Valid, 12619 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-18 08:25:44,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7447 states. [2021-12-18 08:25:44,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7447 to 5615. [2021-12-18 08:25:44,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 3814 states have (on average 1.3004719454640796) internal successors, (4960), 3893 states have internal predecessors, (4960), 1490 states have call successors, (1490), 311 states have call predecessors, (1490), 310 states have return successors, (1493), 1463 states have call predecessors, (1493), 1489 states have call successors, (1493) [2021-12-18 08:25:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 7943 transitions. [2021-12-18 08:25:44,554 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 7943 transitions. Word has length 361 [2021-12-18 08:25:44,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:25:44,555 INFO L470 AbstractCegarLoop]: Abstraction has 5615 states and 7943 transitions. [2021-12-18 08:25:44,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-18 08:25:44,555 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 7943 transitions. [2021-12-18 08:25:44,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-12-18 08:25:44,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:25:44,567 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 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, 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] [2021-12-18 08:25:44,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-18 08:25:44,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:25:44,786 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:25:44,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:25:44,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1628791304, now seen corresponding path program 1 times [2021-12-18 08:25:44,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:25:44,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113608164] [2021-12-18 08:25:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:25:44,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:25:44,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:25:44,791 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:25:44,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-18 08:25:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:25:47,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 2050 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 08:25:47,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:25:47,720 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2021-12-18 08:25:47,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:25:47,720 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:25:47,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113608164] [2021-12-18 08:25:47,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113608164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:25:47,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:25:47,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 08:25:47,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022395866] [2021-12-18 08:25:47,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:25:47,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 08:25:47,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:25:47,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 08:25:47,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 08:25:47,722 INFO L87 Difference]: Start difference. First operand 5615 states and 7943 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-18 08:25:49,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:25:49,244 INFO L93 Difference]: Finished difference Result 13610 states and 19326 transitions. [2021-12-18 08:25:49,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 08:25:49,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 365 [2021-12-18 08:25:49,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:25:49,282 INFO L225 Difference]: With dead ends: 13610 [2021-12-18 08:25:49,283 INFO L226 Difference]: Without dead ends: 8041 [2021-12-18 08:25:49,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 08:25:49,305 INFO L933 BasicCegarLoop]: 3508 mSDtfsCounter, 3005 mSDsluCounter, 8781 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3007 SdHoareTripleChecker+Valid, 12289 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:25:49,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3007 Valid, 12289 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 08:25:49,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8041 states. [2021-12-18 08:25:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8041 to 5607. [2021-12-18 08:25:49,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5607 states, 3810 states have (on average 1.3005249343832022) internal successors, (4955), 3887 states have internal predecessors, (4955), 1486 states have call successors, (1486), 311 states have call predecessors, (1486), 310 states have return successors, (1489), 1459 states have call predecessors, (1489), 1485 states have call successors, (1489) [2021-12-18 08:25:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5607 states to 5607 states and 7930 transitions. [2021-12-18 08:25:49,626 INFO L78 Accepts]: Start accepts. Automaton has 5607 states and 7930 transitions. Word has length 365 [2021-12-18 08:25:49,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:25:49,628 INFO L470 AbstractCegarLoop]: Abstraction has 5607 states and 7930 transitions. [2021-12-18 08:25:49,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-18 08:25:49,629 INFO L276 IsEmpty]: Start isEmpty. Operand 5607 states and 7930 transitions. [2021-12-18 08:25:49,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-12-18 08:25:49,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:25:49,652 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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] [2021-12-18 08:25:49,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-18 08:25:49,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:25:49,872 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:25:49,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:25:49,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1622560107, now seen corresponding path program 1 times [2021-12-18 08:25:49,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:25:49,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416504145] [2021-12-18 08:25:49,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:25:49,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:25:49,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:25:49,875 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:25:49,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-18 08:25:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:25:52,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 2559 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 08:25:52,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:25:53,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2021-12-18 08:25:53,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:25:53,459 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:25:53,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416504145] [2021-12-18 08:25:53,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416504145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:25:53,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:25:53,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 08:25:53,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974240979] [2021-12-18 08:25:53,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:25:53,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 08:25:53,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:25:53,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 08:25:53,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 08:25:53,461 INFO L87 Difference]: Start difference. First operand 5607 states and 7930 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-12-18 08:25:56,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:25:56,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:25:56,879 INFO L93 Difference]: Finished difference Result 12424 states and 17744 transitions. [2021-12-18 08:25:56,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 08:25:56,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 411 [2021-12-18 08:25:56,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:25:56,912 INFO L225 Difference]: With dead ends: 12424 [2021-12-18 08:25:56,913 INFO L226 Difference]: Without dead ends: 6863 [2021-12-18 08:25:56,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 08:25:56,933 INFO L933 BasicCegarLoop]: 3029 mSDtfsCounter, 1145 mSDsluCounter, 11128 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 262 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 14157 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:25:56,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1276 Valid, 14157 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2021-12-18 08:25:56,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6863 states. [2021-12-18 08:25:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6863 to 5617. [2021-12-18 08:25:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5617 states, 3818 states have (on average 1.2998952331063385) internal successors, (4963), 3895 states have internal predecessors, (4963), 1486 states have call successors, (1486), 311 states have call predecessors, (1486), 312 states have return successors, (1495), 1461 states have call predecessors, (1495), 1485 states have call successors, (1495) [2021-12-18 08:25:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5617 states to 5617 states and 7944 transitions. [2021-12-18 08:25:57,276 INFO L78 Accepts]: Start accepts. Automaton has 5617 states and 7944 transitions. Word has length 411 [2021-12-18 08:25:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:25:57,277 INFO L470 AbstractCegarLoop]: Abstraction has 5617 states and 7944 transitions. [2021-12-18 08:25:57,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-12-18 08:25:57,278 INFO L276 IsEmpty]: Start isEmpty. Operand 5617 states and 7944 transitions. [2021-12-18 08:25:57,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2021-12-18 08:25:57,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:25:57,299 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:25:57,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-18 08:25:57,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:25:57,512 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:25:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:25:57,513 INFO L85 PathProgramCache]: Analyzing trace with hash -663394879, now seen corresponding path program 1 times [2021-12-18 08:25:57,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:25:57,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002833754] [2021-12-18 08:25:57,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:25:57,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:25:57,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:25:57,517 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:25:57,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-18 08:26:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:26:00,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 2578 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-18 08:26:00,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:26:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2021-12-18 08:26:01,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:26:01,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:26:01,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002833754] [2021-12-18 08:26:01,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002833754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:26:01,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:26:01,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 08:26:01,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981310760] [2021-12-18 08:26:01,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:26:01,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 08:26:01,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:26:01,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 08:26:01,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 08:26:01,189 INFO L87 Difference]: Start difference. First operand 5617 states and 7944 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-18 08:26:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:26:01,515 INFO L93 Difference]: Finished difference Result 11414 states and 16164 transitions. [2021-12-18 08:26:01,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 08:26:01,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) Word has length 419 [2021-12-18 08:26:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:26:01,543 INFO L225 Difference]: With dead ends: 11414 [2021-12-18 08:26:01,543 INFO L226 Difference]: Without dead ends: 5843 [2021-12-18 08:26:01,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 08:26:01,561 INFO L933 BasicCegarLoop]: 2398 mSDtfsCounter, 224 mSDsluCounter, 9321 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 11719 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:26:01,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 11719 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 08:26:01,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2021-12-18 08:26:01,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 5620. [2021-12-18 08:26:01,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5620 states, 3821 states have (on average 1.2996597749280294) internal successors, (4966), 3897 states have internal predecessors, (4966), 1486 states have call successors, (1486), 311 states have call predecessors, (1486), 312 states have return successors, (1495), 1462 states have call predecessors, (1495), 1485 states have call successors, (1495) [2021-12-18 08:26:01,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5620 states to 5620 states and 7947 transitions. [2021-12-18 08:26:01,889 INFO L78 Accepts]: Start accepts. Automaton has 5620 states and 7947 transitions. Word has length 419 [2021-12-18 08:26:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:26:01,890 INFO L470 AbstractCegarLoop]: Abstraction has 5620 states and 7947 transitions. [2021-12-18 08:26:01,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-18 08:26:01,890 INFO L276 IsEmpty]: Start isEmpty. Operand 5620 states and 7947 transitions. [2021-12-18 08:26:01,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-12-18 08:26:01,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:26:01,910 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:26:01,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-18 08:26:02,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:26:02,124 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:26:02,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:26:02,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1059102902, now seen corresponding path program 1 times [2021-12-18 08:26:02,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:26:02,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106235727] [2021-12-18 08:26:02,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:26:02,127 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:26:02,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:26:02,128 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:26:02,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-18 08:26:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:26:05,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 2645 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 08:26:05,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:26:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2021-12-18 08:26:06,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:26:06,041 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:26:06,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106235727] [2021-12-18 08:26:06,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106235727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:26:06,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:26:06,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 08:26:06,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073182466] [2021-12-18 08:26:06,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:26:06,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 08:26:06,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:26:06,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 08:26:06,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:26:06,042 INFO L87 Difference]: Start difference. First operand 5620 states and 7947 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-18 08:26:06,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:26:06,250 INFO L93 Difference]: Finished difference Result 11200 states and 15847 transitions. [2021-12-18 08:26:06,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 08:26:06,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 438 [2021-12-18 08:26:06,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:26:06,276 INFO L225 Difference]: With dead ends: 11200 [2021-12-18 08:26:06,276 INFO L226 Difference]: Without dead ends: 5626 [2021-12-18 08:26:06,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:26:06,298 INFO L933 BasicCegarLoop]: 2092 mSDtfsCounter, 2 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:26:06,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 4181 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 08:26:06,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2021-12-18 08:26:06,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 5622. [2021-12-18 08:26:06,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5622 states, 3823 states have (on average 1.299503008108815) internal successors, (4968), 3899 states have internal predecessors, (4968), 1486 states have call successors, (1486), 311 states have call predecessors, (1486), 312 states have return successors, (1495), 1462 states have call predecessors, (1495), 1485 states have call successors, (1495) [2021-12-18 08:26:06,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5622 states to 5622 states and 7949 transitions. [2021-12-18 08:26:06,614 INFO L78 Accepts]: Start accepts. Automaton has 5622 states and 7949 transitions. Word has length 438 [2021-12-18 08:26:06,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:26:06,615 INFO L470 AbstractCegarLoop]: Abstraction has 5622 states and 7949 transitions. [2021-12-18 08:26:06,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-18 08:26:06,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5622 states and 7949 transitions. [2021-12-18 08:26:06,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-12-18 08:26:06,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:26:06,635 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:26:06,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-18 08:26:06,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:26:06,855 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:26:06,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:26:06,856 INFO L85 PathProgramCache]: Analyzing trace with hash 258488910, now seen corresponding path program 1 times [2021-12-18 08:26:06,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:26:06,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576408530] [2021-12-18 08:26:06,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:26:06,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:26:06,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:26:06,859 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:26:06,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-18 08:26:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:26:09,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 2665 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 08:26:09,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:26:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 187 proven. 1 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2021-12-18 08:26:10,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 08:26:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1244 trivial. 0 not checked. [2021-12-18 08:26:11,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:26:11,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576408530] [2021-12-18 08:26:11,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576408530] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 08:26:11,461 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 08:26:11,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-18 08:26:11,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353002282] [2021-12-18 08:26:11,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 08:26:11,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 08:26:11,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:26:11,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 08:26:11,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-18 08:26:11,463 INFO L87 Difference]: Start difference. First operand 5622 states and 7949 transitions. Second operand has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-12-18 08:26:11,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:26:11,787 INFO L93 Difference]: Finished difference Result 11216 states and 15867 transitions. [2021-12-18 08:26:11,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 08:26:11,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 441 [2021-12-18 08:26:11,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:26:11,815 INFO L225 Difference]: With dead ends: 11216 [2021-12-18 08:26:11,816 INFO L226 Difference]: Without dead ends: 5640 [2021-12-18 08:26:11,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 876 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-12-18 08:26:11,830 INFO L933 BasicCegarLoop]: 2092 mSDtfsCounter, 10 mSDsluCounter, 4178 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6270 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:26:11,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 6270 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 08:26:11,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5640 states. [2021-12-18 08:26:12,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5640 to 5640. [2021-12-18 08:26:12,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5640 states, 3841 states have (on average 1.2980994532673782) internal successors, (4986), 3917 states have internal predecessors, (4986), 1486 states have call successors, (1486), 311 states have call predecessors, (1486), 312 states have return successors, (1495), 1462 states have call predecessors, (1495), 1485 states have call successors, (1495) [2021-12-18 08:26:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5640 states to 5640 states and 7967 transitions. [2021-12-18 08:26:12,063 INFO L78 Accepts]: Start accepts. Automaton has 5640 states and 7967 transitions. Word has length 441 [2021-12-18 08:26:12,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:26:12,064 INFO L470 AbstractCegarLoop]: Abstraction has 5640 states and 7967 transitions. [2021-12-18 08:26:12,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-12-18 08:26:12,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5640 states and 7967 transitions. [2021-12-18 08:26:12,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-12-18 08:26:12,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:26:12,079 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1] [2021-12-18 08:26:12,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-18 08:26:12,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:26:12,300 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:26:12,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:26:12,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1161854969, now seen corresponding path program 1 times [2021-12-18 08:26:12,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:26:12,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820598120] [2021-12-18 08:26:12,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:26:12,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:26:12,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:26:12,304 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:26:12,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-18 08:26:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:26:15,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 08:26:15,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:26:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 187 proven. 22 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2021-12-18 08:26:16,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 08:26:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 1241 trivial. 0 not checked. [2021-12-18 08:26:17,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:26:17,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820598120] [2021-12-18 08:26:17,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820598120] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 08:26:17,140 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 08:26:17,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-12-18 08:26:17,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871013150] [2021-12-18 08:26:17,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 08:26:17,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 08:26:17,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:26:17,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 08:26:17,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-18 08:26:17,142 INFO L87 Difference]: Start difference. First operand 5640 states and 7967 transitions. Second operand has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-12-18 08:26:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:26:17,786 INFO L93 Difference]: Finished difference Result 11246 states and 15895 transitions. [2021-12-18 08:26:17,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 08:26:17,794 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 437 [2021-12-18 08:26:17,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:26:17,818 INFO L225 Difference]: With dead ends: 11246 [2021-12-18 08:26:17,818 INFO L226 Difference]: Without dead ends: 5652 [2021-12-18 08:26:17,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 862 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-18 08:26:17,836 INFO L933 BasicCegarLoop]: 2092 mSDtfsCounter, 14 mSDsluCounter, 10445 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 12537 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 08:26:17,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 12537 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 08:26:17,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2021-12-18 08:26:18,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 5652. [2021-12-18 08:26:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 3853 states have (on average 1.297171035556709) internal successors, (4998), 3929 states have internal predecessors, (4998), 1486 states have call successors, (1486), 311 states have call predecessors, (1486), 312 states have return successors, (1495), 1462 states have call predecessors, (1495), 1485 states have call successors, (1495) [2021-12-18 08:26:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 7979 transitions. [2021-12-18 08:26:18,059 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 7979 transitions. Word has length 437 [2021-12-18 08:26:18,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:26:18,061 INFO L470 AbstractCegarLoop]: Abstraction has 5652 states and 7979 transitions. [2021-12-18 08:26:18,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-12-18 08:26:18,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 7979 transitions. [2021-12-18 08:26:18,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2021-12-18 08:26:18,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:26:18,075 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:26:18,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-18 08:26:18,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:26:18,288 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:26:18,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:26:18,288 INFO L85 PathProgramCache]: Analyzing trace with hash -449534539, now seen corresponding path program 1 times [2021-12-18 08:26:18,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:26:18,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226229266] [2021-12-18 08:26:18,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:26:18,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:26:18,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:26:18,292 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:26:18,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-18 08:26:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:26:21,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 2766 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 08:26:21,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:26:22,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 1097 trivial. 0 not checked. [2021-12-18 08:26:22,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:26:22,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:26:22,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226229266] [2021-12-18 08:26:22,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226229266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:26:22,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:26:22,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 08:26:22,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615083939] [2021-12-18 08:26:22,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:26:22,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 08:26:22,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:26:22,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 08:26:22,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:26:22,364 INFO L87 Difference]: Start difference. First operand 5652 states and 7979 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-18 08:26:23,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:26:23,791 INFO L93 Difference]: Finished difference Result 13273 states and 19056 transitions. [2021-12-18 08:26:23,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 08:26:23,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 457 [2021-12-18 08:26:23,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:26:23,825 INFO L225 Difference]: With dead ends: 13273 [2021-12-18 08:26:23,825 INFO L226 Difference]: Without dead ends: 7667 [2021-12-18 08:26:23,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:26:23,846 INFO L933 BasicCegarLoop]: 2988 mSDtfsCounter, 554 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 5250 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-18 08:26:23,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 5250 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-18 08:26:23,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7667 states. [2021-12-18 08:26:24,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7667 to 5654. [2021-12-18 08:26:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 3855 states have (on average 1.297016861219196) internal successors, (5000), 3931 states have internal predecessors, (5000), 1486 states have call successors, (1486), 311 states have call predecessors, (1486), 312 states have return successors, (1495), 1462 states have call predecessors, (1495), 1485 states have call successors, (1495) [2021-12-18 08:26:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 7981 transitions. [2021-12-18 08:26:24,197 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 7981 transitions. Word has length 457 [2021-12-18 08:26:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:26:24,197 INFO L470 AbstractCegarLoop]: Abstraction has 5654 states and 7981 transitions. [2021-12-18 08:26:24,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-18 08:26:24,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 7981 transitions. [2021-12-18 08:26:24,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-12-18 08:26:24,212 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:26:24,213 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:26:24,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-18 08:26:24,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:26:24,436 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:26:24,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:26:24,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1847750388, now seen corresponding path program 1 times [2021-12-18 08:26:24,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:26:24,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658547484] [2021-12-18 08:26:24,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:26:24,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:26:24,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:26:24,440 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:26:24,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-18 08:26:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:26:28,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 2801 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 08:26:28,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:26:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 1097 trivial. 0 not checked. [2021-12-18 08:26:28,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:26:28,922 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:26:28,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658547484] [2021-12-18 08:26:28,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658547484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:26:28,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:26:28,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 08:26:28,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508680655] [2021-12-18 08:26:28,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:26:28,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 08:26:28,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:26:28,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 08:26:28,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 08:26:28,924 INFO L87 Difference]: Start difference. First operand 5654 states and 7981 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (41), 3 states have call predecessors, (41), 2 states have call successors, (41) [2021-12-18 08:26:29,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:26:29,375 INFO L93 Difference]: Finished difference Result 13285 states and 19072 transitions. [2021-12-18 08:26:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 08:26:29,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (41), 3 states have call predecessors, (41), 2 states have call successors, (41) Word has length 473 [2021-12-18 08:26:29,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:26:29,414 INFO L225 Difference]: With dead ends: 13285 [2021-12-18 08:26:29,414 INFO L226 Difference]: Without dead ends: 7677 [2021-12-18 08:26:29,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 08:26:29,526 INFO L933 BasicCegarLoop]: 2992 mSDtfsCounter, 554 mSDsluCounter, 8241 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 11233 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 08:26:29,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 11233 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 08:26:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7677 states. [2021-12-18 08:26:29,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7677 to 5662. [2021-12-18 08:26:29,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5662 states, 3861 states have (on average 1.2965552965552967) internal successors, (5006), 3937 states have internal predecessors, (5006), 1486 states have call successors, (1486), 311 states have call predecessors, (1486), 314 states have return successors, (1501), 1464 states have call predecessors, (1501), 1485 states have call successors, (1501) [2021-12-18 08:26:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5662 states to 5662 states and 7993 transitions. [2021-12-18 08:26:29,871 INFO L78 Accepts]: Start accepts. Automaton has 5662 states and 7993 transitions. Word has length 473 [2021-12-18 08:26:29,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:26:29,872 INFO L470 AbstractCegarLoop]: Abstraction has 5662 states and 7993 transitions. [2021-12-18 08:26:29,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (41), 3 states have call predecessors, (41), 2 states have call successors, (41) [2021-12-18 08:26:29,872 INFO L276 IsEmpty]: Start isEmpty. Operand 5662 states and 7993 transitions. [2021-12-18 08:26:29,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2021-12-18 08:26:29,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:26:29,887 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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] [2021-12-18 08:26:29,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-18 08:26:30,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:26:30,104 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:26:30,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:26:30,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1074844413, now seen corresponding path program 1 times [2021-12-18 08:26:30,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:26:30,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242097803] [2021-12-18 08:26:30,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:26:30,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:26:30,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:26:30,108 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:26:30,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-18 08:26:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:26:33,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 2852 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 08:26:33,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:26:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1315 backedges. 214 proven. 1 refuted. 0 times theorem prover too weak. 1100 trivial. 0 not checked. [2021-12-18 08:26:34,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 08:26:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1315 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1310 trivial. 0 not checked. [2021-12-18 08:26:35,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:26:35,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242097803] [2021-12-18 08:26:35,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242097803] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 08:26:35,362 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 08:26:35,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-18 08:26:35,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632273167] [2021-12-18 08:26:35,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 08:26:35,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 08:26:35,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:26:35,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 08:26:35,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-18 08:26:35,365 INFO L87 Difference]: Start difference. First operand 5662 states and 7993 transitions. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 4 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2021-12-18 08:26:43,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:26:43,508 INFO L93 Difference]: Finished difference Result 19334 states and 28541 transitions. [2021-12-18 08:26:43,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 08:26:43,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 4 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) Word has length 488 [2021-12-18 08:26:43,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:26:43,563 INFO L225 Difference]: With dead ends: 19334 [2021-12-18 08:26:43,564 INFO L226 Difference]: Without dead ends: 13718 [2021-12-18 08:26:43,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 971 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-12-18 08:26:43,590 INFO L933 BasicCegarLoop]: 3802 mSDtfsCounter, 4423 mSDsluCounter, 6258 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 10060 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-12-18 08:26:43,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 10060 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2021-12-18 08:26:43,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13718 states. [2021-12-18 08:26:44,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13718 to 5722. [2021-12-18 08:26:44,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5722 states, 3909 states have (on average 1.2959836275262215) internal successors, (5066), 3979 states have internal predecessors, (5066), 1498 states have call successors, (1498), 311 states have call predecessors, (1498), 314 states have return successors, (1525), 1482 states have call predecessors, (1525), 1497 states have call successors, (1525) [2021-12-18 08:26:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 8089 transitions. [2021-12-18 08:26:44,043 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 8089 transitions. Word has length 488 [2021-12-18 08:26:44,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:26:44,044 INFO L470 AbstractCegarLoop]: Abstraction has 5722 states and 8089 transitions. [2021-12-18 08:26:44,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 4 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2021-12-18 08:26:44,045 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 8089 transitions. [2021-12-18 08:26:44,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2021-12-18 08:26:44,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:26:44,059 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1] [2021-12-18 08:26:44,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-18 08:26:44,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:26:44,279 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:26:44,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:26:44,280 INFO L85 PathProgramCache]: Analyzing trace with hash -347760347, now seen corresponding path program 1 times [2021-12-18 08:26:44,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:26:44,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671434629] [2021-12-18 08:26:44,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:26:44,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:26:44,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:26:44,284 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:26:44,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-18 08:26:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:26:48,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 08:26:48,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:26:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2021-12-18 08:26:49,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:26:49,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:26:49,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671434629] [2021-12-18 08:26:49,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671434629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:26:49,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:26:49,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 08:26:49,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391562324] [2021-12-18 08:26:49,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:26:49,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 08:26:49,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:26:49,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 08:26:49,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 08:26:49,071 INFO L87 Difference]: Start difference. First operand 5722 states and 8089 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-12-18 08:26:50,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:26:50,577 INFO L93 Difference]: Finished difference Result 13654 states and 19322 transitions. [2021-12-18 08:26:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 08:26:50,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 497 [2021-12-18 08:26:50,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:26:50,606 INFO L225 Difference]: With dead ends: 13654 [2021-12-18 08:26:50,606 INFO L226 Difference]: Without dead ends: 7978 [2021-12-18 08:26:50,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 08:26:50,623 INFO L933 BasicCegarLoop]: 2552 mSDtfsCounter, 2487 mSDsluCounter, 4093 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 6645 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:26:50,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2487 Valid, 6645 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 08:26:50,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7978 states. [2021-12-18 08:26:50,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7978 to 5722. [2021-12-18 08:26:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5722 states, 3909 states have (on average 1.295727807623433) internal successors, (5065), 3979 states have internal predecessors, (5065), 1498 states have call successors, (1498), 311 states have call predecessors, (1498), 314 states have return successors, (1525), 1482 states have call predecessors, (1525), 1497 states have call successors, (1525) [2021-12-18 08:26:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 8088 transitions. [2021-12-18 08:26:50,980 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 8088 transitions. Word has length 497 [2021-12-18 08:26:50,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:26:50,981 INFO L470 AbstractCegarLoop]: Abstraction has 5722 states and 8088 transitions. [2021-12-18 08:26:50,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-12-18 08:26:50,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 8088 transitions. [2021-12-18 08:26:50,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2021-12-18 08:26:50,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:26:50,996 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:26:51,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-18 08:26:51,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:26:51,212 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:26:51,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:26:51,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1113138696, now seen corresponding path program 1 times [2021-12-18 08:26:51,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:26:51,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666392185] [2021-12-18 08:26:51,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:26:51,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:26:51,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:26:51,216 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:26:51,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-18 08:26:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:26:55,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 2935 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 08:26:55,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:26:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1360 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 1119 trivial. 0 not checked. [2021-12-18 08:26:56,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:26:56,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:26:56,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666392185] [2021-12-18 08:26:56,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666392185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:26:56,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:26:56,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 08:26:56,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220395333] [2021-12-18 08:26:56,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:26:56,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 08:26:56,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:26:56,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 08:26:56,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:26:56,375 INFO L87 Difference]: Start difference. First operand 5722 states and 8088 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-12-18 08:26:57,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:26:57,145 INFO L93 Difference]: Finished difference Result 14429 states and 20402 transitions. [2021-12-18 08:26:57,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 08:26:57,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 512 [2021-12-18 08:26:57,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:26:57,251 INFO L225 Difference]: With dead ends: 14429 [2021-12-18 08:26:57,252 INFO L226 Difference]: Without dead ends: 8753 [2021-12-18 08:26:57,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:26:57,268 INFO L933 BasicCegarLoop]: 3088 mSDtfsCounter, 1624 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 5057 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 08:26:57,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1624 Valid, 5057 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 08:26:57,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8753 states. [2021-12-18 08:26:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8753 to 8738. [2021-12-18 08:26:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8738 states, 6001 states have (on average 1.286618896850525) internal successors, (7721), 6109 states have internal predecessors, (7721), 2251 states have call successors, (2251), 480 states have call predecessors, (2251), 485 states have return successors, (2296), 2224 states have call predecessors, (2296), 2250 states have call successors, (2296) [2021-12-18 08:26:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8738 states to 8738 states and 12268 transitions. [2021-12-18 08:26:57,674 INFO L78 Accepts]: Start accepts. Automaton has 8738 states and 12268 transitions. Word has length 512 [2021-12-18 08:26:57,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:26:57,675 INFO L470 AbstractCegarLoop]: Abstraction has 8738 states and 12268 transitions. [2021-12-18 08:26:57,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-12-18 08:26:57,675 INFO L276 IsEmpty]: Start isEmpty. Operand 8738 states and 12268 transitions. [2021-12-18 08:26:57,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2021-12-18 08:26:57,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:26:57,687 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1] [2021-12-18 08:26:57,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-12-18 08:26:57,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:26:57,888 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:26:57,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:26:57,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1531370599, now seen corresponding path program 1 times [2021-12-18 08:26:57,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:26:57,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798550030] [2021-12-18 08:26:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:26:57,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:26:57,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:26:57,892 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:26:57,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-18 08:27:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:02,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 2883 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 08:27:02,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:27:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2021-12-18 08:27:03,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:27:03,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:27:03,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798550030] [2021-12-18 08:27:03,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798550030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:27:03,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:27:03,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 08:27:03,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122008575] [2021-12-18 08:27:03,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:27:03,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 08:27:03,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:27:03,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 08:27:03,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:27:03,233 INFO L87 Difference]: Start difference. First operand 8738 states and 12268 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-12-18 08:27:04,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:27:04,119 INFO L93 Difference]: Finished difference Result 17542 states and 24698 transitions. [2021-12-18 08:27:04,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 08:27:04,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 497 [2021-12-18 08:27:04,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:27:04,167 INFO L225 Difference]: With dead ends: 17542 [2021-12-18 08:27:04,167 INFO L226 Difference]: Without dead ends: 8850 [2021-12-18 08:27:04,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:27:04,193 INFO L933 BasicCegarLoop]: 2087 mSDtfsCounter, 12 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4166 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 08:27:04,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 4166 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 08:27:04,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8850 states. [2021-12-18 08:27:04,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8850 to 8752. [2021-12-18 08:27:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8752 states, 6015 states have (on average 1.28595178719867) internal successors, (7735), 6123 states have internal predecessors, (7735), 2251 states have call successors, (2251), 480 states have call predecessors, (2251), 485 states have return successors, (2296), 2224 states have call predecessors, (2296), 2250 states have call successors, (2296) [2021-12-18 08:27:04,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8752 states to 8752 states and 12282 transitions. [2021-12-18 08:27:04,736 INFO L78 Accepts]: Start accepts. Automaton has 8752 states and 12282 transitions. Word has length 497 [2021-12-18 08:27:04,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:27:04,737 INFO L470 AbstractCegarLoop]: Abstraction has 8752 states and 12282 transitions. [2021-12-18 08:27:04,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-12-18 08:27:04,738 INFO L276 IsEmpty]: Start isEmpty. Operand 8752 states and 12282 transitions. [2021-12-18 08:27:04,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2021-12-18 08:27:04,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:27:04,755 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:27:04,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-18 08:27:04,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:27:04,974 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:27:04,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:27:04,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1293368057, now seen corresponding path program 1 times [2021-12-18 08:27:04,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:27:04,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341044885] [2021-12-18 08:27:04,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:27:04,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:27:04,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:27:04,978 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:27:04,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-18 08:27:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:09,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 08:27:09,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:27:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2021-12-18 08:27:10,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 08:27:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2021-12-18 08:27:11,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:27:11,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341044885] [2021-12-18 08:27:11,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341044885] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 08:27:11,138 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 08:27:11,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-18 08:27:11,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585373454] [2021-12-18 08:27:11,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 08:27:11,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 08:27:11,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:27:11,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 08:27:11,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-18 08:27:11,140 INFO L87 Difference]: Start difference. First operand 8752 states and 12282 transitions. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-12-18 08:27:12,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:27:12,832 INFO L93 Difference]: Finished difference Result 17794 states and 25062 transitions. [2021-12-18 08:27:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 08:27:12,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 505 [2021-12-18 08:27:12,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:27:12,865 INFO L225 Difference]: With dead ends: 17794 [2021-12-18 08:27:12,865 INFO L226 Difference]: Without dead ends: 9088 [2021-12-18 08:27:12,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1009 GetRequests, 1004 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-12-18 08:27:12,882 INFO L933 BasicCegarLoop]: 2101 mSDtfsCounter, 62 mSDsluCounter, 6237 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 8338 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-18 08:27:12,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 8338 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-18 08:27:12,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9088 states. [2021-12-18 08:27:13,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9088 to 9088. [2021-12-18 08:27:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9088 states, 6267 states have (on average 1.2811552576990586) internal successors, (8029), 6375 states have internal predecessors, (8029), 2335 states have call successors, (2335), 480 states have call predecessors, (2335), 485 states have return successors, (2380), 2308 states have call predecessors, (2380), 2334 states have call successors, (2380) [2021-12-18 08:27:13,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9088 states to 9088 states and 12744 transitions. [2021-12-18 08:27:13,256 INFO L78 Accepts]: Start accepts. Automaton has 9088 states and 12744 transitions. Word has length 505 [2021-12-18 08:27:13,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:27:13,257 INFO L470 AbstractCegarLoop]: Abstraction has 9088 states and 12744 transitions. [2021-12-18 08:27:13,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-12-18 08:27:13,258 INFO L276 IsEmpty]: Start isEmpty. Operand 9088 states and 12744 transitions. [2021-12-18 08:27:13,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2021-12-18 08:27:13,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:27:13,279 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:27:13,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-18 08:27:13,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:27:13,480 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:27:13,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:27:13,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1976918628, now seen corresponding path program 1 times [2021-12-18 08:27:13,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:27:13,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134911929] [2021-12-18 08:27:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:27:13,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:27:13,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:27:13,484 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:27:13,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-18 08:27:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:17,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 3108 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 08:27:17,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:27:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 1294 trivial. 0 not checked. [2021-12-18 08:27:18,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:27:18,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:27:18,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134911929] [2021-12-18 08:27:18,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134911929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:27:18,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:27:18,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 08:27:18,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630741934] [2021-12-18 08:27:18,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:27:18,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 08:27:18,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:27:18,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 08:27:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:27:18,816 INFO L87 Difference]: Start difference. First operand 9088 states and 12744 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-12-18 08:27:19,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:27:19,481 INFO L93 Difference]: Finished difference Result 20819 states and 29218 transitions. [2021-12-18 08:27:19,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 08:27:19,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 548 [2021-12-18 08:27:19,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:27:19,530 INFO L225 Difference]: With dead ends: 20819 [2021-12-18 08:27:19,530 INFO L226 Difference]: Without dead ends: 11777 [2021-12-18 08:27:19,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 08:27:19,562 INFO L933 BasicCegarLoop]: 2973 mSDtfsCounter, 1791 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 4930 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 08:27:19,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1791 Valid, 4930 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 08:27:19,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11777 states. [2021-12-18 08:27:20,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11777 to 11771. [2021-12-18 08:27:20,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11771 states, 8122 states have (on average 1.2817040137897069) internal successors, (10410), 8267 states have internal predecessors, (10410), 3012 states have call successors, (3012), 631 states have call predecessors, (3012), 636 states have return successors, (3057), 2972 states have call predecessors, (3057), 3011 states have call successors, (3057) [2021-12-18 08:27:20,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11771 states to 11771 states and 16479 transitions. [2021-12-18 08:27:20,083 INFO L78 Accepts]: Start accepts. Automaton has 11771 states and 16479 transitions. Word has length 548 [2021-12-18 08:27:20,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:27:20,083 INFO L470 AbstractCegarLoop]: Abstraction has 11771 states and 16479 transitions. [2021-12-18 08:27:20,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-12-18 08:27:20,083 INFO L276 IsEmpty]: Start isEmpty. Operand 11771 states and 16479 transitions. [2021-12-18 08:27:20,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2021-12-18 08:27:20,097 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:27:20,097 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1] [2021-12-18 08:27:20,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-12-18 08:27:20,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:27:20,298 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:27:20,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:27:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1925393038, now seen corresponding path program 1 times [2021-12-18 08:27:20,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:27:20,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848145108] [2021-12-18 08:27:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:27:20,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:27:20,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:27:20,302 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:27:20,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-18 08:27:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:24,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-18 08:27:24,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:27:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1310 trivial. 0 not checked. [2021-12-18 08:27:25,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:27:25,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:27:25,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848145108] [2021-12-18 08:27:25,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848145108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:27:25,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:27:25,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 08:27:25,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921935132] [2021-12-18 08:27:25,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:27:25,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 08:27:25,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:27:25,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 08:27:25,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 08:27:25,868 INFO L87 Difference]: Start difference. First operand 11771 states and 16479 transitions. Second operand has 8 states, 8 states have (on average 23.75) internal successors, (190), 6 states have internal predecessors, (190), 2 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (43), 4 states have call predecessors, (43), 2 states have call successors, (43) [2021-12-18 08:27:26,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:27:26,442 INFO L93 Difference]: Finished difference Result 24140 states and 33990 transitions. [2021-12-18 08:27:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 08:27:26,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 6 states have internal predecessors, (190), 2 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (43), 4 states have call predecessors, (43), 2 states have call successors, (43) Word has length 515 [2021-12-18 08:27:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:27:26,494 INFO L225 Difference]: With dead ends: 24140 [2021-12-18 08:27:26,494 INFO L226 Difference]: Without dead ends: 12415 [2021-12-18 08:27:26,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 08:27:26,538 INFO L933 BasicCegarLoop]: 2161 mSDtfsCounter, 48 mSDsluCounter, 12902 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 15063 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:27:26,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 15063 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 08:27:26,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12415 states. [2021-12-18 08:27:27,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12415 to 11839. [2021-12-18 08:27:27,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11839 states, 8174 states have (on average 1.2799119158306826) internal successors, (10462), 8317 states have internal predecessors, (10462), 3012 states have call successors, (3012), 631 states have call predecessors, (3012), 652 states have return successors, (3089), 2990 states have call predecessors, (3089), 3011 states have call successors, (3089) [2021-12-18 08:27:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11839 states to 11839 states and 16563 transitions. [2021-12-18 08:27:27,141 INFO L78 Accepts]: Start accepts. Automaton has 11839 states and 16563 transitions. Word has length 515 [2021-12-18 08:27:27,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:27:27,142 INFO L470 AbstractCegarLoop]: Abstraction has 11839 states and 16563 transitions. [2021-12-18 08:27:27,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 6 states have internal predecessors, (190), 2 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (43), 4 states have call predecessors, (43), 2 states have call successors, (43) [2021-12-18 08:27:27,142 INFO L276 IsEmpty]: Start isEmpty. Operand 11839 states and 16563 transitions. [2021-12-18 08:27:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2021-12-18 08:27:27,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:27:27,164 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1] [2021-12-18 08:27:27,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-12-18 08:27:27,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:27:27,384 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:27:27,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:27:27,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1018435526, now seen corresponding path program 2 times [2021-12-18 08:27:27,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 08:27:27,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497082436] [2021-12-18 08:27:27,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 08:27:27,387 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 08:27:27,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 08:27:27,388 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 08:27:27,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-18 08:27:28,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 08:27:28,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 08:27:28,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 08:27:28,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:27:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2021-12-18 08:27:29,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:27:29,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 08:27:29,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497082436] [2021-12-18 08:27:29,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497082436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:27:29,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:27:29,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 08:27:29,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867127729] [2021-12-18 08:27:29,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:27:29,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 08:27:29,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 08:27:29,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 08:27:29,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 08:27:29,295 INFO L87 Difference]: Start difference. First operand 11839 states and 16563 transitions. Second operand has 5 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 3 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2021-12-18 08:27:29,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:27:29,668 INFO L93 Difference]: Finished difference Result 11839 states and 16563 transitions. [2021-12-18 08:27:29,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 08:27:29,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 3 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 521 [2021-12-18 08:27:29,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:27:29,670 INFO L225 Difference]: With dead ends: 11839 [2021-12-18 08:27:29,670 INFO L226 Difference]: Without dead ends: 0 [2021-12-18 08:27:29,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 08:27:29,691 INFO L933 BasicCegarLoop]: 2089 mSDtfsCounter, 8 mSDsluCounter, 6259 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8348 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 08:27:29,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 8348 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 08:27:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-18 08:27:29,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-18 08:27:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 08:27:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-18 08:27:29,710 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 521 [2021-12-18 08:27:29,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:27:29,716 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-18 08:27:29,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 3 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2021-12-18 08:27:29,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-18 08:27:29,717 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-18 08:27:29,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-18 08:27:29,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-12-18 08:27:29,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 08:27:29,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-18 08:30:20,114 WARN L227 SmtUtils]: Spent 21.47s on a formula simplification. DAG size of input: 113 DAG size of output: 82 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Killed by 15