./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 5b36d44f 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-wip.dd.seqcomp-5b36d44 [2021-11-07 13:17:19,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:17:19,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:17:19,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:17:19,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:17:19,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:17:19,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:17:19,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:17:19,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:17:19,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:17:19,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:17:19,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:17:19,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:17:19,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:17:19,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:17:19,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:17:19,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:17:19,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:17:19,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:17:19,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:17:19,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:17:19,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:17:19,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:17:19,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:17:19,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:17:19,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:17:19,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:17:19,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:17:19,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:17:19,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:17:19,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:17:19,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:17:19,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:17:19,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:17:19,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:17:19,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:17:19,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:17:19,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:17:19,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:17:19,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:17:19,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:17:19,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:17:19,613 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:17:19,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:17:19,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:17:19,615 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:17:19,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:17:19,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:17:19,616 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:17:19,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:17:19,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:17:19,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:17:19,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:17:19,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:17:19,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:17:19,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:17:19,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:17:19,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:17:19,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:17:19,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:17:19,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:17:19,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:17:19,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:17:19,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:17:19,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:17:19,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:17:19,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:17:19,621 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:17:19,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:17:19,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:17:19,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:17:19,622 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 [2021-11-07 13:17:19,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:17:19,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:17:19,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:17:19,827 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:17:19,828 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:17:19,829 INFO L432 ainManager$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 [2021-11-07 13:17:19,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5be1815/197d437b6f97468d8fed3216ed17f85d/FLAG0475cb2dd [2021-11-07 13:17:20,599 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:17:20,600 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 [2021-11-07 13:17:20,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5be1815/197d437b6f97468d8fed3216ed17f85d/FLAG0475cb2dd [2021-11-07 13:17:20,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5be1815/197d437b6f97468d8fed3216ed17f85d [2021-11-07 13:17:20,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:17:20,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:17:20,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:17:20,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:17:20,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:17:20,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:20" (1/1) ... [2021-11-07 13:17:20,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692fc34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:20, skipping insertion in model container [2021-11-07 13:17:20,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:20" (1/1) ... [2021-11-07 13:17:20,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:17:20,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:17:21,674 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] [2021-11-07 13:17:22,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:17:22,491 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:17:22,664 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] [2021-11-07 13:17:22,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:17:23,020 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:17:23,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:23 WrapperNode [2021-11-07 13:17:23,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:17:23,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:17:23,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:17:23,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:17:23,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:23" (1/1) ... [2021-11-07 13:17:23,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:23" (1/1) ... [2021-11-07 13:17:23,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:17:23,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:17:23,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:17:23,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:17:23,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:23" (1/1) ... [2021-11-07 13:17:23,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:23" (1/1) ... [2021-11-07 13:17:23,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:23" (1/1) ... [2021-11-07 13:17:23,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:23" (1/1) ... [2021-11-07 13:17:24,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:23" (1/1) ... [2021-11-07 13:17:24,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:23" (1/1) ... [2021-11-07 13:17:24,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:23" (1/1) ... [2021-11-07 13:17:24,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:17:24,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:17:24,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:17:24,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:17:24,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:23" (1/1) ... [2021-11-07 13:17:24,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:17:24,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:17:24,736 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) [2021-11-07 13:17:24,761 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 [2021-11-07 13:17:24,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:17:24,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:17:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:17:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:17:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 13:17:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:17:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:17:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:17:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:17:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:17:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:17:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:17:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:17:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:17:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-07 13:17:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:17:24,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:18:12,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:18:12,613 INFO L299 CfgBuilder]: Removed 2776 assume(true) statements. [2021-11-07 13:18:12,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:18:12 BoogieIcfgContainer [2021-11-07 13:18:12,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:18:12,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:18:12,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:18:12,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:18:12,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:17:20" (1/3) ... [2021-11-07 13:18:12,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb64da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:18:12, skipping insertion in model container [2021-11-07 13:18:12,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:23" (2/3) ... [2021-11-07 13:18:12,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb64da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:18:12, skipping insertion in model container [2021-11-07 13:18:12,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:18:12" (3/3) ... [2021-11-07 13:18:12,627 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 [2021-11-07 13:18:12,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:18:12,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 13:18:12,680 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:18:12,685 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 [2021-11-07 13:18:12,685 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 13:18:12,741 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) [2021-11-07 13:18:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 13:18:12,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:18:12,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:18:12,751 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:18:12,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:18:12,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1079258943, now seen corresponding path program 1 times [2021-11-07 13:18:12,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:18:12,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876715349] [2021-11-07 13:18:12,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:18:12,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:18:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:18:13,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:18:13,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:18:13,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876715349] [2021-11-07 13:18:13,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876715349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:18:13,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:18:13,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 13:18:13,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4189028] [2021-11-07 13:18:13,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:18:13,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 13:18:13,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:18:13,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 13:18:13,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 13:18:13,743 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) [2021-11-07 13:18:15,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:18:17,949 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:18:19,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:18:19,076 INFO L93 Difference]: Finished difference Result 13270 states and 19204 transitions. [2021-11-07 13:18:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 13:18:19,079 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 [2021-11-07 13:18:19,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:18:19,143 INFO L225 Difference]: With dead ends: 13270 [2021-11-07 13:18:19,144 INFO L226 Difference]: Without dead ends: 9758 [2021-11-07 13:18:19,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 289.28ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-07 13:18:19,166 INFO L933 BasicCegarLoop]: 4796 mSDtfsCounter, 23701 mSDsluCounter, 14303 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 29 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4401.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23701 SdHoareTripleChecker+Valid, 19099 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.62ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4679.04ms IncrementalHoareTripleChecker+Time [2021-11-07 13:18:19,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23701 Valid, 19099 Invalid, 100 Unknown, 0 Unchecked, 65.62ms Time], IncrementalHoareTripleChecker [29 Valid, 69 Invalid, 2 Unknown, 0 Unchecked, 4679.04ms Time] [2021-11-07 13:18:19,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9758 states. [2021-11-07 13:18:19,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9758 to 9755. [2021-11-07 13:18:19,730 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) [2021-11-07 13:18:19,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9755 states to 9755 states and 13945 transitions. [2021-11-07 13:18:19,762 INFO L78 Accepts]: Start accepts. Automaton has 9755 states and 13945 transitions. Word has length 24 [2021-11-07 13:18:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:18:19,762 INFO L470 AbstractCegarLoop]: Abstraction has 9755 states and 13945 transitions. [2021-11-07 13:18:19,762 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) [2021-11-07 13:18:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 9755 states and 13945 transitions. [2021-11-07 13:18:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 13:18:19,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:18:19,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:18:19,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:18:19,766 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:18:19,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:18:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1835372418, now seen corresponding path program 1 times [2021-11-07 13:18:19,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:18:19,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642510220] [2021-11-07 13:18:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:18:19,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:18:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:18:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:18:20,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:18:20,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642510220] [2021-11-07 13:18:20,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642510220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:18:20,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:18:20,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:18:20,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579800149] [2021-11-07 13:18:20,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:18:20,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:18:20,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:18:20,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:18:20,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:18:20,193 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) [2021-11-07 13:18:21,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:18:21,080 INFO L93 Difference]: Finished difference Result 29227 states and 41792 transitions. [2021-11-07 13:18:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:18:21,081 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 [2021-11-07 13:18:21,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:18:21,175 INFO L225 Difference]: With dead ends: 29227 [2021-11-07 13:18:21,176 INFO L226 Difference]: Without dead ends: 19483 [2021-11-07 13:18:21,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 138.11ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:18:21,203 INFO L933 BasicCegarLoop]: 4687 mSDtfsCounter, 4667 mSDsluCounter, 14030 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 362.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 18717 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.86ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 398.24ms IncrementalHoareTripleChecker+Time [2021-11-07 13:18:21,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4667 Valid, 18717 Invalid, 79 Unknown, 0 Unchecked, 19.86ms Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 398.24ms Time] [2021-11-07 13:18:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19483 states. [2021-11-07 13:18:21,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19483 to 19483. [2021-11-07 13:18:21,688 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) [2021-11-07 13:18:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19483 states to 19483 states and 27843 transitions. [2021-11-07 13:18:21,741 INFO L78 Accepts]: Start accepts. Automaton has 19483 states and 27843 transitions. Word has length 31 [2021-11-07 13:18:21,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:18:21,741 INFO L470 AbstractCegarLoop]: Abstraction has 19483 states and 27843 transitions. [2021-11-07 13:18:21,742 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) [2021-11-07 13:18:21,742 INFO L276 IsEmpty]: Start isEmpty. Operand 19483 states and 27843 transitions. [2021-11-07 13:18:21,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 13:18:21,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:18:21,755 INFO L514 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] [2021-11-07 13:18:21,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:18:21,756 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:18:21,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:18:21,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1277242410, now seen corresponding path program 1 times [2021-11-07 13:18:21,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:18:21,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302311926] [2021-11-07 13:18:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:18:21,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:18:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:18:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:18:22,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:18:22,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302311926] [2021-11-07 13:18:22,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302311926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:18:22,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:18:22,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:18:22,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778042779] [2021-11-07 13:18:22,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:18:22,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:18:22,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:18:22,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:18:22,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:18:22,213 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) [2021-11-07 13:18:22,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:18:22,988 INFO L93 Difference]: Finished difference Result 42763 states and 61370 transitions. [2021-11-07 13:18:22,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:18:22,988 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 [2021-11-07 13:18:22,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:18:23,048 INFO L225 Difference]: With dead ends: 42763 [2021-11-07 13:18:23,048 INFO L226 Difference]: Without dead ends: 23298 [2021-11-07 13:18:23,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:18:23,092 INFO L933 BasicCegarLoop]: 4711 mSDtfsCounter, 983 mSDsluCounter, 4630 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 336.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 9341 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.64ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 371.09ms IncrementalHoareTripleChecker+Time [2021-11-07 13:18:23,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 9341 Invalid, 50 Unknown, 0 Unchecked, 6.64ms Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 371.09ms Time] [2021-11-07 13:18:23,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23298 states. [2021-11-07 13:18:23,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23298 to 22659. [2021-11-07 13:18:23,576 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) [2021-11-07 13:18:23,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22659 states to 22659 states and 32590 transitions. [2021-11-07 13:18:23,628 INFO L78 Accepts]: Start accepts. Automaton has 22659 states and 32590 transitions. Word has length 72 [2021-11-07 13:18:23,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:18:23,628 INFO L470 AbstractCegarLoop]: Abstraction has 22659 states and 32590 transitions. [2021-11-07 13:18:23,629 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) [2021-11-07 13:18:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 22659 states and 32590 transitions. [2021-11-07 13:18:23,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 13:18:23,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:18:23,650 INFO L514 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] [2021-11-07 13:18:23,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:18:23,651 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:18:23,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:18:23,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2090471931, now seen corresponding path program 1 times [2021-11-07 13:18:23,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:18:23,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888785013] [2021-11-07 13:18:23,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:18:23,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:18:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:18:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 13:18:24,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:18:24,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888785013] [2021-11-07 13:18:24,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888785013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:18:24,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:18:24,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:18:24,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319787] [2021-11-07 13:18:24,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:18:24,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:18:24,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:18:24,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:18:24,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:18:24,393 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) [2021-11-07 13:18:26,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:18:26,214 INFO L93 Difference]: Finished difference Result 108561 states and 156415 transitions. [2021-11-07 13:18:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:18:26,214 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 [2021-11-07 13:18:26,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:18:26,407 INFO L225 Difference]: With dead ends: 108561 [2021-11-07 13:18:26,408 INFO L226 Difference]: Without dead ends: 85920 [2021-11-07 13:18:26,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.72ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:18:26,474 INFO L933 BasicCegarLoop]: 8452 mSDtfsCounter, 13736 mSDsluCounter, 13075 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 398.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13736 SdHoareTripleChecker+Valid, 21527 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.64ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 426.01ms IncrementalHoareTripleChecker+Time [2021-11-07 13:18:26,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13736 Valid, 21527 Invalid, 127 Unknown, 0 Unchecked, 28.64ms Time], IncrementalHoareTripleChecker [25 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 426.01ms Time] [2021-11-07 13:18:26,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85920 states. [2021-11-07 13:18:27,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85920 to 22719. [2021-11-07 13:18:27,561 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) [2021-11-07 13:18:27,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22719 states to 22719 states and 32650 transitions. [2021-11-07 13:18:27,602 INFO L78 Accepts]: Start accepts. Automaton has 22719 states and 32650 transitions. Word has length 94 [2021-11-07 13:18:27,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:18:27,603 INFO L470 AbstractCegarLoop]: Abstraction has 22719 states and 32650 transitions. [2021-11-07 13:18:27,603 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) [2021-11-07 13:18:27,603 INFO L276 IsEmpty]: Start isEmpty. Operand 22719 states and 32650 transitions. [2021-11-07 13:18:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 13:18:27,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:18:27,620 INFO L514 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] [2021-11-07 13:18:27,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:18:27,620 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:18:27,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:18:27,621 INFO L85 PathProgramCache]: Analyzing trace with hash -280214740, now seen corresponding path program 1 times [2021-11-07 13:18:27,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:18:27,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334425467] [2021-11-07 13:18:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:18:27,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:18:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:18:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 13:18:28,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:18:28,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334425467] [2021-11-07 13:18:28,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334425467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:18:28,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:18:28,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:18:28,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201908490] [2021-11-07 13:18:28,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:18:28,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:18:28,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:18:28,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:18:28,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:18:28,692 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) [2021-11-07 13:18:32,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:18:32,207 INFO L93 Difference]: Finished difference Result 104617 states and 150038 transitions. [2021-11-07 13:18:32,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:18:32,208 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 [2021-11-07 13:18:32,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:18:32,359 INFO L225 Difference]: With dead ends: 104617 [2021-11-07 13:18:32,359 INFO L226 Difference]: Without dead ends: 81916 [2021-11-07 13:18:32,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.63ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:18:32,389 INFO L933 BasicCegarLoop]: 11341 mSDtfsCounter, 12642 mSDsluCounter, 15729 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1582.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12642 SdHoareTripleChecker+Valid, 27070 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.09ms SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1707.11ms IncrementalHoareTripleChecker+Time [2021-11-07 13:18:32,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12642 Valid, 27070 Invalid, 457 Unknown, 0 Unchecked, 26.09ms Time], IncrementalHoareTripleChecker [93 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 1707.11ms Time] [2021-11-07 13:18:32,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81916 states. [2021-11-07 13:18:33,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81916 to 22819. [2021-11-07 13:18:33,448 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) [2021-11-07 13:18:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22819 states to 22819 states and 32750 transitions. [2021-11-07 13:18:33,492 INFO L78 Accepts]: Start accepts. Automaton has 22819 states and 32750 transitions. Word has length 97 [2021-11-07 13:18:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:18:33,496 INFO L470 AbstractCegarLoop]: Abstraction has 22819 states and 32750 transitions. [2021-11-07 13:18:33,496 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) [2021-11-07 13:18:33,496 INFO L276 IsEmpty]: Start isEmpty. Operand 22819 states and 32750 transitions. [2021-11-07 13:18:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 13:18:33,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:18:33,523 INFO L514 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] [2021-11-07 13:18:33,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:18:33,524 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:18:33,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:18:33,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1210352489, now seen corresponding path program 1 times [2021-11-07 13:18:33,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:18:33,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25434716] [2021-11-07 13:18:33,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:18:33,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:18:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:18:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 13:18:34,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:18:34,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25434716] [2021-11-07 13:18:34,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25434716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:18:34,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:18:34,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:18:34,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147900926] [2021-11-07 13:18:34,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:18:34,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:18:34,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:18:34,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:18:34,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:18:34,124 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) [2021-11-07 13:18:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:18:36,961 INFO L93 Difference]: Finished difference Result 87254 states and 125295 transitions. [2021-11-07 13:18:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:18:36,962 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 [2021-11-07 13:18:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:18:37,110 INFO L225 Difference]: With dead ends: 87254 [2021-11-07 13:18:37,110 INFO L226 Difference]: Without dead ends: 64453 [2021-11-07 13:18:37,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:18:37,165 INFO L933 BasicCegarLoop]: 12978 mSDtfsCounter, 9413 mSDsluCounter, 12638 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 911.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9413 SdHoareTripleChecker+Valid, 25616 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.38ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 988.01ms IncrementalHoareTripleChecker+Time [2021-11-07 13:18:37,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9413 Valid, 25616 Invalid, 256 Unknown, 0 Unchecked, 20.38ms Time], IncrementalHoareTripleChecker [44 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 988.01ms Time] [2021-11-07 13:18:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64453 states. [2021-11-07 13:18:38,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64453 to 22819. [2021-11-07 13:18:38,170 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) [2021-11-07 13:18:38,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22819 states to 22819 states and 32700 transitions. [2021-11-07 13:18:38,200 INFO L78 Accepts]: Start accepts. Automaton has 22819 states and 32700 transitions. Word has length 99 [2021-11-07 13:18:38,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:18:38,201 INFO L470 AbstractCegarLoop]: Abstraction has 22819 states and 32700 transitions. [2021-11-07 13:18:38,201 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) [2021-11-07 13:18:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand 22819 states and 32700 transitions. [2021-11-07 13:18:38,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 13:18:38,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:18:38,216 INFO L514 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] [2021-11-07 13:18:38,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 13:18:38,217 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:18:38,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:18:38,217 INFO L85 PathProgramCache]: Analyzing trace with hash -335242480, now seen corresponding path program 1 times [2021-11-07 13:18:38,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:18:38,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121032173] [2021-11-07 13:18:38,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:18:38,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:18:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:18:44,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 13:18:44,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:18:44,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121032173] [2021-11-07 13:18:44,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121032173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:18:44,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:18:44,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:18:44,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546549353] [2021-11-07 13:18:44,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:18:44,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:18:44,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:18:44,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:18:44,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:18:44,165 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) [2021-11-07 13:18:46,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:18:47,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:18:47,447 INFO L93 Difference]: Finished difference Result 46332 states and 66410 transitions. [2021-11-07 13:18:47,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 13:18:47,448 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 [2021-11-07 13:18:47,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:18:47,483 INFO L225 Difference]: With dead ends: 46332 [2021-11-07 13:18:47,483 INFO L226 Difference]: Without dead ends: 23521 [2021-11-07 13:18:47,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 282.12ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 13:18:47,520 INFO L933 BasicCegarLoop]: 9324 mSDtfsCounter, 4653 mSDsluCounter, 23329 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2244.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4653 SdHoareTripleChecker+Valid, 32653 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.76ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2382.62ms IncrementalHoareTripleChecker+Time [2021-11-07 13:18:47,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4653 Valid, 32653 Invalid, 27 Unknown, 0 Unchecked, 16.76ms Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2382.62ms Time] [2021-11-07 13:18:47,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23521 states. [2021-11-07 13:18:48,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23521 to 22822. [2021-11-07 13:18:48,304 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) [2021-11-07 13:18:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22822 states to 22822 states and 32701 transitions. [2021-11-07 13:18:48,337 INFO L78 Accepts]: Start accepts. Automaton has 22822 states and 32701 transitions. Word has length 99 [2021-11-07 13:18:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:18:48,338 INFO L470 AbstractCegarLoop]: Abstraction has 22822 states and 32701 transitions. [2021-11-07 13:18:48,338 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) [2021-11-07 13:18:48,338 INFO L276 IsEmpty]: Start isEmpty. Operand 22822 states and 32701 transitions. [2021-11-07 13:18:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 13:18:48,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:18:48,350 INFO L514 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] [2021-11-07 13:18:48,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 13:18:48,351 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:18:48,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:18:48,351 INFO L85 PathProgramCache]: Analyzing trace with hash 433381483, now seen corresponding path program 1 times [2021-11-07 13:18:48,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:18:48,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972264351] [2021-11-07 13:18:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:18:48,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:18:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:18:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 13:18:58,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:18:58,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972264351] [2021-11-07 13:18:58,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972264351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:18:58,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:18:58,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 13:18:58,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143410467] [2021-11-07 13:18:58,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:18:58,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 13:18:58,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:18:58,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 13:18:58,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-07 13:18:58,559 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) [2021-11-07 13:19:11,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:19:11,334 INFO L93 Difference]: Finished difference Result 184838 states and 265932 transitions. [2021-11-07 13:19:11,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 13:19:11,335 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 [2021-11-07 13:19:11,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:19:11,639 INFO L225 Difference]: With dead ends: 184838 [2021-11-07 13:19:11,640 INFO L226 Difference]: Without dead ends: 162034 [2021-11-07 13:19:11,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1400.86ms TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2021-11-07 13:19:11,705 INFO L933 BasicCegarLoop]: 17965 mSDtfsCounter, 60339 mSDsluCounter, 98703 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3325.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60339 SdHoareTripleChecker+Valid, 116668 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 118.74ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3653.59ms IncrementalHoareTripleChecker+Time [2021-11-07 13:19:11,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60339 Valid, 116668 Invalid, 900 Unknown, 0 Unchecked, 118.74ms Time], IncrementalHoareTripleChecker [51 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 3653.59ms Time] [2021-11-07 13:19:11,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162034 states. [2021-11-07 13:19:14,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162034 to 22840. [2021-11-07 13:19:14,256 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) [2021-11-07 13:19:14,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22840 states to 22840 states and 32689 transitions. [2021-11-07 13:19:14,286 INFO L78 Accepts]: Start accepts. Automaton has 22840 states and 32689 transitions. Word has length 101 [2021-11-07 13:19:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:19:14,286 INFO L470 AbstractCegarLoop]: Abstraction has 22840 states and 32689 transitions. [2021-11-07 13:19:14,287 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) [2021-11-07 13:19:14,287 INFO L276 IsEmpty]: Start isEmpty. Operand 22840 states and 32689 transitions. [2021-11-07 13:19:14,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 13:19:14,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:19:14,298 INFO L514 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] [2021-11-07 13:19:14,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 13:19:14,298 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:19:14,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:19:14,298 INFO L85 PathProgramCache]: Analyzing trace with hash 456523542, now seen corresponding path program 1 times [2021-11-07 13:19:14,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:19:14,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75761352] [2021-11-07 13:19:14,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:19:14,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:19:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:19:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 13:19:16,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:19:16,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75761352] [2021-11-07 13:19:16,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75761352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:19:16,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:19:16,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:19:16,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870183535] [2021-11-07 13:19:16,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:19:16,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:19:16,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:19:16,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:19:16,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:19:16,147 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) [2021-11-07 13:19:21,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:19:21,237 INFO L93 Difference]: Finished difference Result 89404 states and 128077 transitions. [2021-11-07 13:19:21,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:19:21,238 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 [2021-11-07 13:19:21,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:19:21,336 INFO L225 Difference]: With dead ends: 89404 [2021-11-07 13:19:21,336 INFO L226 Difference]: Without dead ends: 66582 [2021-11-07 13:19:21,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.37ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:19:21,368 INFO L933 BasicCegarLoop]: 13252 mSDtfsCounter, 9327 mSDsluCounter, 8934 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9327 SdHoareTripleChecker+Valid, 22186 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.91ms IncrementalHoareTripleChecker+Time [2021-11-07 13:19:21,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9327 Valid, 22186 Invalid, 15 Unknown, 0 Unchecked, 20.02ms Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 76.91ms Time] [2021-11-07 13:19:21,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66582 states.