./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.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 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:45:20,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:45:20,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:45:20,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:45:20,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:45:20,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:45:20,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:45:20,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:45:20,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:45:20,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:45:20,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:45:20,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:45:20,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:45:20,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:45:20,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:45:20,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:45:20,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:45:20,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:45:20,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:45:20,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:45:20,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:45:20,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:45:20,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:45:20,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:45:20,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:45:20,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:45:20,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:45:20,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:45:20,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:45:20,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:45:20,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:45:20,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:45:20,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:45:20,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:45:20,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:45:20,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:45:20,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:45:20,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:45:20,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:45:20,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:45:20,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:45:20,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:45:20,741 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:45:20,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:45:20,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:45:20,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:45:20,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:45:20,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:45:20,744 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:45:20,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:45:20,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:45:20,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:45:20,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:45:20,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:45:20,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:45:20,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:45:20,746 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:45:20,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:45:20,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:45:20,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:45:20,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:45:20,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:45:20,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:45:20,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:45:20,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:45:20,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:45:20,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:45:20,748 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:45:20,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:45:20,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:45:20,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:45:20,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 [2021-11-06 14:45:20,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:45:21,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:45:21,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:45:21,005 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:45:21,007 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:45:21,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-06 14:45:21,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0297a0d80/b657eab58efe41b0b9d0b384befbb565/FLAG52c1f1758 [2021-11-06 14:45:21,812 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:45:21,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-06 14:45:21,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0297a0d80/b657eab58efe41b0b9d0b384befbb565/FLAG52c1f1758 [2021-11-06 14:45:21,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0297a0d80/b657eab58efe41b0b9d0b384befbb565 [2021-11-06 14:45:21,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:45:21,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:45:21,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:45:21,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:45:21,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:45:21,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:45:21" (1/1) ... [2021-11-06 14:45:21,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f254a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:21, skipping insertion in model container [2021-11-06 14:45:21,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:45:21" (1/1) ... [2021-11-06 14:45:21,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:45:22,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:45:22,979 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-11-06 14:45:23,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:45:23,924 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:45:24,039 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-11-06 14:45:24,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:45:24,412 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:45:24,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:24 WrapperNode [2021-11-06 14:45:24,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:45:24,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:45:24,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:45:24,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:45:24,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:24" (1/1) ... [2021-11-06 14:45:24,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:24" (1/1) ... [2021-11-06 14:45:25,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:45:25,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:45:25,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:45:25,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:45:25,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:24" (1/1) ... [2021-11-06 14:45:25,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:24" (1/1) ... [2021-11-06 14:45:25,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:24" (1/1) ... [2021-11-06 14:45:25,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:24" (1/1) ... [2021-11-06 14:45:25,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:24" (1/1) ... [2021-11-06 14:45:25,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:24" (1/1) ... [2021-11-06 14:45:25,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:24" (1/1) ... [2021-11-06 14:45:25,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:45:25,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:45:25,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:45:25,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:45:25,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:24" (1/1) ... [2021-11-06 14:45:25,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:45:25,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:45:25,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 14:45:25,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 14:45:25,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:45:25,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:45:25,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:45:25,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:45:25,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-06 14:45:25,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:45:25,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:45:25,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:45:25,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:45:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:45:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:45:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:45:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:45:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:45:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-06 14:45:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:45:25,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:46:14,184 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:46:14,184 INFO L299 CfgBuilder]: Removed 2776 assume(true) statements. [2021-11-06 14:46:14,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:46:14 BoogieIcfgContainer [2021-11-06 14:46:14,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:46:14,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:46:14,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:46:14,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:46:14,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:45:21" (1/3) ... [2021-11-06 14:46:14,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f522996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:46:14, skipping insertion in model container [2021-11-06 14:46:14,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:24" (2/3) ... [2021-11-06 14:46:14,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f522996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:46:14, skipping insertion in model container [2021-11-06 14:46:14,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:46:14" (3/3) ... [2021-11-06 14:46:14,200 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-06 14:46:14,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:46:14,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-06 14:46:14,265 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:46:14,271 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 14:46:14,271 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-06 14:46:14,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 3351 states, 3349 states have (on average 1.4467005076142132) internal successors, (4845), 3350 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:14,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-06 14:46:14,332 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:46:14,333 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:46:14,333 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:46:14,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:46:14,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1079258943, now seen corresponding path program 1 times [2021-11-06 14:46:14,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:46:14,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826125543] [2021-11-06 14:46:14,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:46:14,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:46:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:46:15,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:46:15,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:46:15,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826125543] [2021-11-06 14:46:15,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826125543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:46:15,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:46:15,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 14:46:15,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461848105] [2021-11-06 14:46:15,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:46:15,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:46:15,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:46:15,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:46:15,288 INFO L87 Difference]: Start difference. First operand has 3351 states, 3349 states have (on average 1.4467005076142132) internal successors, (4845), 3350 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:46:20,717 INFO L93 Difference]: Finished difference Result 13270 states and 19204 transitions. [2021-11-06 14:46:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 14:46:20,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-06 14:46:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:46:20,779 INFO L225 Difference]: With dead ends: 13270 [2021-11-06 14:46:20,779 INFO L226 Difference]: Without dead ends: 9758 [2021-11-06 14:46:20,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:46:20,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9758 states. [2021-11-06 14:46:21,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9758 to 9755. [2021-11-06 14:46:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9755 states, 9754 states have (on average 1.4296698790239901) internal successors, (13945), 9754 states have internal predecessors, (13945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9755 states to 9755 states and 13945 transitions. [2021-11-06 14:46:21,374 INFO L78 Accepts]: Start accepts. Automaton has 9755 states and 13945 transitions. Word has length 24 [2021-11-06 14:46:21,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:46:21,375 INFO L470 AbstractCegarLoop]: Abstraction has 9755 states and 13945 transitions. [2021-11-06 14:46:21,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:21,375 INFO L276 IsEmpty]: Start isEmpty. Operand 9755 states and 13945 transitions. [2021-11-06 14:46:21,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-06 14:46:21,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:46:21,380 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:46:21,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:46:21,380 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:46:21,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:46:21,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1835372418, now seen corresponding path program 1 times [2021-11-06 14:46:21,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:46:21,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472813661] [2021-11-06 14:46:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:46:21,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:46:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:46:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:46:21,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:46:21,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472813661] [2021-11-06 14:46:21,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472813661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:46:21,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:46:21,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:46:21,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638124543] [2021-11-06 14:46:21,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:46:21,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:46:21,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:46:21,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:46:21,851 INFO L87 Difference]: Start difference. First operand 9755 states and 13945 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:22,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:46:22,823 INFO L93 Difference]: Finished difference Result 29227 states and 41792 transitions. [2021-11-06 14:46:22,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:46:22,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-06 14:46:22,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:46:22,912 INFO L225 Difference]: With dead ends: 29227 [2021-11-06 14:46:22,913 INFO L226 Difference]: Without dead ends: 19483 [2021-11-06 14:46:22,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:46:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19483 states. [2021-11-06 14:46:23,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19483 to 19483. [2021-11-06 14:46:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19483 states, 19482 states have (on average 1.4291653834308593) internal successors, (27843), 19482 states have internal predecessors, (27843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19483 states to 19483 states and 27843 transitions. [2021-11-06 14:46:23,538 INFO L78 Accepts]: Start accepts. Automaton has 19483 states and 27843 transitions. Word has length 31 [2021-11-06 14:46:23,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:46:23,540 INFO L470 AbstractCegarLoop]: Abstraction has 19483 states and 27843 transitions. [2021-11-06 14:46:23,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:23,541 INFO L276 IsEmpty]: Start isEmpty. Operand 19483 states and 27843 transitions. [2021-11-06 14:46:23,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 14:46:23,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:46:23,555 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:46:23,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:46:23,556 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:46:23,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:46:23,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1277242410, now seen corresponding path program 1 times [2021-11-06 14:46:23,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:46:23,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136219038] [2021-11-06 14:46:23,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:46:23,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:46:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:46:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:46:23,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:46:23,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136219038] [2021-11-06 14:46:23,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136219038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:46:23,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:46:23,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:46:23,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204614703] [2021-11-06 14:46:23,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:46:23,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:46:23,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:46:23,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:46:23,905 INFO L87 Difference]: Start difference. First operand 19483 states and 27843 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:24,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:46:24,764 INFO L93 Difference]: Finished difference Result 42763 states and 61370 transitions. [2021-11-06 14:46:24,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:46:24,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-06 14:46:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:46:24,828 INFO L225 Difference]: With dead ends: 42763 [2021-11-06 14:46:24,828 INFO L226 Difference]: Without dead ends: 23298 [2021-11-06 14:46:24,865 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:46:24,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23298 states. [2021-11-06 14:46:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23298 to 22659. [2021-11-06 14:46:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22659 states, 22658 states have (on average 1.4383440727336922) internal successors, (32590), 22658 states have internal predecessors, (32590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22659 states to 22659 states and 32590 transitions. [2021-11-06 14:46:25,487 INFO L78 Accepts]: Start accepts. Automaton has 22659 states and 32590 transitions. Word has length 72 [2021-11-06 14:46:25,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:46:25,488 INFO L470 AbstractCegarLoop]: Abstraction has 22659 states and 32590 transitions. [2021-11-06 14:46:25,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:25,488 INFO L276 IsEmpty]: Start isEmpty. Operand 22659 states and 32590 transitions. [2021-11-06 14:46:25,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 14:46:25,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:46:25,505 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:46:25,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:46:25,505 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:46:25,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:46:25,506 INFO L85 PathProgramCache]: Analyzing trace with hash 2090471931, now seen corresponding path program 1 times [2021-11-06 14:46:25,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:46:25,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293085519] [2021-11-06 14:46:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:46:25,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:46:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:46:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:46:26,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:46:26,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293085519] [2021-11-06 14:46:26,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293085519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:46:26,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:46:26,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:46:26,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213370770] [2021-11-06 14:46:26,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:46:26,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:46:26,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:46:26,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:46:26,483 INFO L87 Difference]: Start difference. First operand 22659 states and 32590 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:46:28,545 INFO L93 Difference]: Finished difference Result 108561 states and 156415 transitions. [2021-11-06 14:46:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:46:28,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-06 14:46:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:46:28,804 INFO L225 Difference]: With dead ends: 108561 [2021-11-06 14:46:28,805 INFO L226 Difference]: Without dead ends: 85920 [2021-11-06 14:46:28,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:46:28,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85920 states. [2021-11-06 14:46:30,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85920 to 22719. [2021-11-06 14:46:30,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22719 states, 22718 states have (on average 1.4371863720397922) internal successors, (32650), 22718 states have internal predecessors, (32650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:30,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22719 states to 22719 states and 32650 transitions. [2021-11-06 14:46:30,974 INFO L78 Accepts]: Start accepts. Automaton has 22719 states and 32650 transitions. Word has length 94 [2021-11-06 14:46:30,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:46:30,975 INFO L470 AbstractCegarLoop]: Abstraction has 22719 states and 32650 transitions. [2021-11-06 14:46:30,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:30,975 INFO L276 IsEmpty]: Start isEmpty. Operand 22719 states and 32650 transitions. [2021-11-06 14:46:30,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 14:46:30,994 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:46:30,995 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:46:30,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:46:30,996 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:46:30,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:46:30,997 INFO L85 PathProgramCache]: Analyzing trace with hash -280214740, now seen corresponding path program 1 times [2021-11-06 14:46:30,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:46:30,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660649067] [2021-11-06 14:46:30,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:46:30,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:46:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:46:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:46:31,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:46:31,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660649067] [2021-11-06 14:46:31,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660649067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:46:31,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:46:31,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:46:31,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608259330] [2021-11-06 14:46:31,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:46:31,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:46:31,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:46:31,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:46:31,955 INFO L87 Difference]: Start difference. First operand 22719 states and 32650 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:35,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:46:35,901 INFO L93 Difference]: Finished difference Result 104617 states and 150038 transitions. [2021-11-06 14:46:35,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:46:35,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 14:46:35,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:46:36,124 INFO L225 Difference]: With dead ends: 104617 [2021-11-06 14:46:36,124 INFO L226 Difference]: Without dead ends: 81916 [2021-11-06 14:46:36,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:46:36,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81916 states. [2021-11-06 14:46:37,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81916 to 22819. [2021-11-06 14:46:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22819 states, 22818 states have (on average 1.4352704005609607) internal successors, (32750), 22818 states have internal predecessors, (32750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:37,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22819 states to 22819 states and 32750 transitions. [2021-11-06 14:46:37,531 INFO L78 Accepts]: Start accepts. Automaton has 22819 states and 32750 transitions. Word has length 97 [2021-11-06 14:46:37,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:46:37,532 INFO L470 AbstractCegarLoop]: Abstraction has 22819 states and 32750 transitions. [2021-11-06 14:46:37,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:37,532 INFO L276 IsEmpty]: Start isEmpty. Operand 22819 states and 32750 transitions. [2021-11-06 14:46:37,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 14:46:37,549 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:46:37,549 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:46:37,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:46:37,549 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:46:37,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:46:37,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1210352489, now seen corresponding path program 1 times [2021-11-06 14:46:37,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:46:37,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327953548] [2021-11-06 14:46:37,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:46:37,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:46:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:46:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:46:38,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:46:38,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327953548] [2021-11-06 14:46:38,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327953548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:46:38,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:46:38,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:46:38,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515367514] [2021-11-06 14:46:38,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:46:38,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:46:38,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:46:38,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:46:38,043 INFO L87 Difference]: Start difference. First operand 22819 states and 32750 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:46:41,501 INFO L93 Difference]: Finished difference Result 87254 states and 125295 transitions. [2021-11-06 14:46:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:46:41,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-06 14:46:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:46:41,633 INFO L225 Difference]: With dead ends: 87254 [2021-11-06 14:46:41,634 INFO L226 Difference]: Without dead ends: 64453 [2021-11-06 14:46:41,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:46:41,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64453 states. [2021-11-06 14:46:42,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64453 to 22819. [2021-11-06 14:46:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22819 states, 22818 states have (on average 1.4330791480410203) internal successors, (32700), 22818 states have internal predecessors, (32700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22819 states to 22819 states and 32700 transitions. [2021-11-06 14:46:43,043 INFO L78 Accepts]: Start accepts. Automaton has 22819 states and 32700 transitions. Word has length 99 [2021-11-06 14:46:43,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:46:43,044 INFO L470 AbstractCegarLoop]: Abstraction has 22819 states and 32700 transitions. [2021-11-06 14:46:43,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:43,044 INFO L276 IsEmpty]: Start isEmpty. Operand 22819 states and 32700 transitions. [2021-11-06 14:46:43,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 14:46:43,065 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:46:43,065 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:46:43,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:46:43,066 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:46:43,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:46:43,066 INFO L85 PathProgramCache]: Analyzing trace with hash -335242480, now seen corresponding path program 1 times [2021-11-06 14:46:43,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:46:43,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049482886] [2021-11-06 14:46:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:46:43,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:46:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:46:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:46:48,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:46:48,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049482886] [2021-11-06 14:46:48,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049482886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:46:48,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:46:48,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:46:48,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568871644] [2021-11-06 14:46:48,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:46:48,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:46:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:46:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:46:48,613 INFO L87 Difference]: Start difference. First operand 22819 states and 32700 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:46:52,062 INFO L93 Difference]: Finished difference Result 46332 states and 66410 transitions. [2021-11-06 14:46:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 14:46:52,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-06 14:46:52,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:46:52,106 INFO L225 Difference]: With dead ends: 46332 [2021-11-06 14:46:52,107 INFO L226 Difference]: Without dead ends: 23521 [2021-11-06 14:46:52,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:46:52,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23521 states. [2021-11-06 14:46:53,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23521 to 22822. [2021-11-06 14:46:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22822 states, 22821 states have (on average 1.432934577801148) internal successors, (32701), 22821 states have internal predecessors, (32701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:53,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22822 states to 22822 states and 32701 transitions. [2021-11-06 14:46:53,136 INFO L78 Accepts]: Start accepts. Automaton has 22822 states and 32701 transitions. Word has length 99 [2021-11-06 14:46:53,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:46:53,136 INFO L470 AbstractCegarLoop]: Abstraction has 22822 states and 32701 transitions. [2021-11-06 14:46:53,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:46:53,136 INFO L276 IsEmpty]: Start isEmpty. Operand 22822 states and 32701 transitions. [2021-11-06 14:46:53,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 14:46:53,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:46:53,149 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:46:53,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:46:53,150 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:46:53,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:46:53,150 INFO L85 PathProgramCache]: Analyzing trace with hash 433381483, now seen corresponding path program 1 times [2021-11-06 14:46:53,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:46:53,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806460923] [2021-11-06 14:46:53,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:46:53,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:47:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:47:02,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:47:02,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:47:02,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806460923] [2021-11-06 14:47:02,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806460923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:47:02,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:47:02,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 14:47:02,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091406381] [2021-11-06 14:47:02,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 14:47:02,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:47:02,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 14:47:02,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:47:02,117 INFO L87 Difference]: Start difference. First operand 22822 states and 32701 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:47:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:47:15,982 INFO L93 Difference]: Finished difference Result 184838 states and 265932 transitions. [2021-11-06 14:47:15,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 14:47:15,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-06 14:47:15,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:47:16,283 INFO L225 Difference]: With dead ends: 184838 [2021-11-06 14:47:16,283 INFO L226 Difference]: Without dead ends: 162034 [2021-11-06 14:47:16,350 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2021-11-06 14:47:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162034 states. [2021-11-06 14:47:19,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162034 to 22840. [2021-11-06 14:47:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22840 states, 22839 states have (on average 1.4312798283637638) internal successors, (32689), 22839 states have internal predecessors, (32689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:47:19,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22840 states to 22840 states and 32689 transitions. [2021-11-06 14:47:19,091 INFO L78 Accepts]: Start accepts. Automaton has 22840 states and 32689 transitions. Word has length 101 [2021-11-06 14:47:19,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:47:19,091 INFO L470 AbstractCegarLoop]: Abstraction has 22840 states and 32689 transitions. [2021-11-06 14:47:19,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:47:19,091 INFO L276 IsEmpty]: Start isEmpty. Operand 22840 states and 32689 transitions. [2021-11-06 14:47:19,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 14:47:19,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:47:19,104 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:47:19,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:47:19,105 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:47:19,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:47:19,105 INFO L85 PathProgramCache]: Analyzing trace with hash 456523542, now seen corresponding path program 1 times [2021-11-06 14:47:19,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:47:19,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154670091] [2021-11-06 14:47:19,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:47:19,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:47:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:47:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:47:20,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:47:20,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154670091] [2021-11-06 14:47:20,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154670091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:47:20,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:47:20,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:47:20,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374044539] [2021-11-06 14:47:20,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:47:20,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:47:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:47:20,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:47:20,390 INFO L87 Difference]: Start difference. First operand 22840 states and 32689 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:47:25,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:47:25,269 INFO L93 Difference]: Finished difference Result 89404 states and 128077 transitions. [2021-11-06 14:47:25,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:47:25,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-06 14:47:25,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:47:25,368 INFO L225 Difference]: With dead ends: 89404 [2021-11-06 14:47:25,368 INFO L226 Difference]: Without dead ends: 66582 [2021-11-06 14:47:25,396 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:47:25,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66582 states. [2021-11-06 14:47:27,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66582 to 22852. [2021-11-06 14:47:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22852 states, 22851 states have (on average 1.4310533455866263) internal successors, (32701), 22851 states have internal predecessors, (32701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:47:27,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22852 states to 22852 states and 32701 transitions. [2021-11-06 14:47:27,474 INFO L78 Accepts]: Start accepts. Automaton has 22852 states and 32701 transitions. Word has length 107 [2021-11-06 14:47:27,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:47:27,474 INFO L470 AbstractCegarLoop]: Abstraction has 22852 states and 32701 transitions. [2021-11-06 14:47:27,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:47:27,474 INFO L276 IsEmpty]: Start isEmpty. Operand 22852 states and 32701 transitions. [2021-11-06 14:47:27,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 14:47:27,486 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:47:27,486 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:47:27,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 14:47:27,486 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:47:27,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:47:27,487 INFO L85 PathProgramCache]: Analyzing trace with hash -111291945, now seen corresponding path program 1 times [2021-11-06 14:47:27,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:47:27,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276045105] [2021-11-06 14:47:27,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:47:27,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:47:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:47:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:47:28,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:47:28,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276045105] [2021-11-06 14:47:28,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276045105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:47:28,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:47:28,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:47:28,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099342184] [2021-11-06 14:47:28,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:47:28,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:47:28,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:47:28,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:47:28,300 INFO L87 Difference]: Start difference. First operand 22852 states and 32701 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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)