./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.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 1cfba800a850f13ff72fddf9946e31aec208a19aa4b82d402046e12670b66199 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:07:12,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:07:12,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:07:12,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:07:12,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:07:12,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:07:12,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:07:12,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:07:12,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:07:12,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:07:12,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:07:12,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:07:12,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:07:12,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:07:12,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:07:12,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:07:12,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:07:12,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:07:12,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:07:12,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:07:12,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:07:12,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:07:12,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:07:12,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:07:12,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:07:12,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:07:12,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:07:12,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:07:12,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:07:12,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:07:12,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:07:12,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:07:12,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:07:12,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:07:12,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:07:12,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:07:12,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:07:12,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:07:12,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:07:12,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:07:12,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:07:12,745 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:07:12,772 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:07:12,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:07:12,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:07:12,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:07:12,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:07:12,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:07:12,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:07:12,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:07:12,777 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:07:12,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:07:12,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:07:12,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:07:12,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:07:12,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:07:12,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:07:12,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:07:12,778 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:07:12,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:07:12,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:07:12,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:07:12,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:07:12,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:07:12,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:07:12,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:07:12,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:07:12,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:07:12,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:07:12,780 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:07:12,780 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:07:12,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:07:12,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:07:12,781 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cfba800a850f13ff72fddf9946e31aec208a19aa4b82d402046e12670b66199 [2021-12-14 18:07:12,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:07:13,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:07:13,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:07:13,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:07:13,017 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:07:13,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i [2021-12-14 18:07:13,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ad85fdce/92097bcd475a42fba736e4af421921a9/FLAGba29167b6 [2021-12-14 18:07:13,783 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:07:13,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i [2021-12-14 18:07:13,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ad85fdce/92097bcd475a42fba736e4af421921a9/FLAGba29167b6 [2021-12-14 18:07:14,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ad85fdce/92097bcd475a42fba736e4af421921a9 [2021-12-14 18:07:14,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:07:14,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:07:14,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:07:14,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:07:14,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:07:14,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:07:14" (1/1) ... [2021-12-14 18:07:14,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c6bd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:14, skipping insertion in model container [2021-12-14 18:07:14,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:07:14" (1/1) ... [2021-12-14 18:07:14,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:07:14,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:07:15,183 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i[277952,277965] [2021-12-14 18:07:15,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:07:15,302 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:07:15,604 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i[277952,277965] [2021-12-14 18:07:15,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:07:15,726 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:07:15,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:15 WrapperNode [2021-12-14 18:07:15,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:07:15,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:07:15,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:07:15,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:07:15,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:15" (1/1) ... [2021-12-14 18:07:15,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:15" (1/1) ... [2021-12-14 18:07:15,936 INFO L137 Inliner]: procedures = 258, calls = 2260, calls flagged for inlining = 96, calls inlined = 93, statements flattened = 5893 [2021-12-14 18:07:15,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:07:15,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:07:15,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:07:15,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:07:15,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:15" (1/1) ... [2021-12-14 18:07:15,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:15" (1/1) ... [2021-12-14 18:07:15,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:15" (1/1) ... [2021-12-14 18:07:15,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:15" (1/1) ... [2021-12-14 18:07:16,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:15" (1/1) ... [2021-12-14 18:07:16,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:15" (1/1) ... [2021-12-14 18:07:16,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:15" (1/1) ... [2021-12-14 18:07:16,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:07:16,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:07:16,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:07:16,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:07:16,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:15" (1/1) ... [2021-12-14 18:07:16,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:07:16,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:07:16,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 18:07:16,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 18:07:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:07:16,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:07:16,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:07:16,168 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:07:16,168 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~dma_addr_t~0~TO~VOID [2021-12-14 18:07:16,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~dma_addr_t~0~TO~VOID [2021-12-14 18:07:16,169 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-12-14 18:07:16,169 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-12-14 18:07:16,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mpctl_mutex [2021-12-14 18:07:16,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mpctl_mutex [2021-12-14 18:07:16,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:07:16,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:07:16,169 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_GetIocState [2021-12-14 18:07:16,169 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_GetIocState [2021-12-14 18:07:16,170 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2021-12-14 18:07:16,170 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2021-12-14 18:07:16,170 INFO L130 BoogieDeclarations]: Found specification of procedure __scsi_iterate_devices [2021-12-14 18:07:16,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __scsi_iterate_devices [2021-12-14 18:07:16,170 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 18:07:16,170 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 18:07:16,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:07:16,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:07:16,171 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_syscall_down [2021-12-14 18:07:16,171 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_syscall_down [2021-12-14 18:07:16,171 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_device_driver_deregister [2021-12-14 18:07:16,171 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_device_driver_deregister [2021-12-14 18:07:16,171 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-14 18:07:16,172 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-14 18:07:16,172 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_remove [2021-12-14 18:07:16,172 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_remove [2021-12-14 18:07:16,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 18:07:16,172 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 18:07:16,173 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:07:16,173 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:07:16,173 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_put_msg_frame [2021-12-14 18:07:16,173 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_put_msg_frame [2021-12-14 18:07:16,173 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-12-14 18:07:16,173 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-12-14 18:07:16,173 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 18:07:16,174 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 18:07:16,174 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 18:07:16,174 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 18:07:16,174 INFO L130 BoogieDeclarations]: Found specification of procedure __mptctl_ioctl [2021-12-14 18:07:16,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __mptctl_ioctl [2021-12-14 18:07:16,174 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_do_mpt_command [2021-12-14 18:07:16,174 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_do_mpt_command [2021-12-14 18:07:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_do_fw_download [2021-12-14 18:07:16,175 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_do_fw_download [2021-12-14 18:07:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:07:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:07:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of__MPT_MGMT [2021-12-14 18:07:16,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of__MPT_MGMT [2021-12-14 18:07:16,175 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_put_msg_frame_hi_pri [2021-12-14 18:07:16,176 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_put_msg_frame_hi_pri [2021-12-14 18:07:16,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-14 18:07:16,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-14 18:07:16,176 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 18:07:16,177 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 18:07:16,177 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_free_fw_memory [2021-12-14 18:07:16,177 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_free_fw_memory [2021-12-14 18:07:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_do_taskmgmt [2021-12-14 18:07:16,178 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_do_taskmgmt [2021-12-14 18:07:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-14 18:07:16,178 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-14 18:07:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:07:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:07:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_clear_taskmgmt_in_progress_flag [2021-12-14 18:07:16,179 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_clear_taskmgmt_in_progress_flag [2021-12-14 18:07:16,179 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_timeout_expired [2021-12-14 18:07:16,179 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_timeout_expired [2021-12-14 18:07:16,179 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-12-14 18:07:16,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-12-14 18:07:16,179 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 18:07:16,179 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 18:07:16,179 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 18:07:16,180 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 18:07:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mpctl_mutex [2021-12-14 18:07:16,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mpctl_mutex [2021-12-14 18:07:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure mptctl_fasync [2021-12-14 18:07:16,180 INFO L138 BoogieDeclarations]: Found implementation of procedure mptctl_fasync [2021-12-14 18:07:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 18:07:16,180 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 18:07:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2021-12-14 18:07:16,180 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2021-12-14 18:07:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:07:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_set_taskmgmt_in_progress_flag [2021-12-14 18:07:16,181 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_set_taskmgmt_in_progress_flag [2021-12-14 18:07:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-14 18:07:16,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-14 18:07:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_verify_adapter [2021-12-14 18:07:16,182 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_verify_adapter [2021-12-14 18:07:16,182 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 18:07:16,182 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 18:07:16,182 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-14 18:07:16,182 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-14 18:07:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:07:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-14 18:07:16,183 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-14 18:07:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_deregister [2021-12-14 18:07:16,183 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_deregister [2021-12-14 18:07:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_sgl [2021-12-14 18:07:16,184 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_sgl [2021-12-14 18:07:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:07:16,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:07:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:07:16,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:07:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:07:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 18:07:16,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 18:07:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-14 18:07:16,185 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-14 18:07:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:07:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-14 18:07:16,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-14 18:07:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:07:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_get_msg_frame [2021-12-14 18:07:16,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_get_msg_frame [2021-12-14 18:07:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-14 18:07:16,187 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-14 18:07:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of__MPT_MGMT [2021-12-14 18:07:16,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of__MPT_MGMT [2021-12-14 18:07:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_send_handshake_request [2021-12-14 18:07:16,189 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_send_handshake_request [2021-12-14 18:07:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_register [2021-12-14 18:07:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_register [2021-12-14 18:07:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of__MPT_MGMT [2021-12-14 18:07:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of__MPT_MGMT [2021-12-14 18:07:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2021-12-14 18:07:16,194 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2021-12-14 18:07:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:07:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-14 18:07:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:07:16,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:07:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_config [2021-12-14 18:07:16,195 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_config [2021-12-14 18:07:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure mpt_free_msg_frame [2021-12-14 18:07:16,195 INFO L138 BoogieDeclarations]: Found implementation of procedure mpt_free_msg_frame [2021-12-14 18:07:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 18:07:16,195 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 18:07:16,718 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:07:16,720 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:07:18,701 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:07:28,731 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:07:28,755 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:07:28,755 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:07:28,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:07:28 BoogieIcfgContainer [2021-12-14 18:07:28,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:07:28,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:07:28,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:07:28,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:07:28,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:07:14" (1/3) ... [2021-12-14 18:07:28,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553c2b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:07:28, skipping insertion in model container [2021-12-14 18:07:28,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:15" (2/3) ... [2021-12-14 18:07:28,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553c2b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:07:28, skipping insertion in model container [2021-12-14 18:07:28,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:07:28" (3/3) ... [2021-12-14 18:07:28,766 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--message--fusion--mptctl.ko-entry_point.cil.out.i [2021-12-14 18:07:28,773 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:07:28,774 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:07:28,823 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:07:28,835 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 18:07:28,836 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:07:28,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 1328 states, 997 states have (on average 1.415245737211635) internal successors, (1411), 1017 states have internal predecessors, (1411), 267 states have call successors, (267), 63 states have call predecessors, (267), 62 states have return successors, (263), 262 states have call predecessors, (263), 263 states have call successors, (263) [2021-12-14 18:07:28,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-14 18:07:28,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:07:28,883 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:07:28,883 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:07:28,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:07:28,887 INFO L85 PathProgramCache]: Analyzing trace with hash -811675881, now seen corresponding path program 1 times [2021-12-14 18:07:28,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:07:28,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448860829] [2021-12-14 18:07:28,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:07:28,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:07:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:07:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 18:07:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 18:07:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 18:07:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 18:07:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 18:07:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:07:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 18:07:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 18:07:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-12-14 18:07:29,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:07:29,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448860829] [2021-12-14 18:07:29,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448860829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:07:29,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:07:29,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 18:07:29,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700563787] [2021-12-14 18:07:29,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:07:29,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 18:07:29,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:07:29,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 18:07:29,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:07:29,541 INFO L87 Difference]: Start difference. First operand has 1328 states, 997 states have (on average 1.415245737211635) internal successors, (1411), 1017 states have internal predecessors, (1411), 267 states have call successors, (267), 63 states have call predecessors, (267), 62 states have return successors, (263), 262 states have call predecessors, (263), 263 states have call successors, (263) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 18:07:31,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:34,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:37,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:07:41,797 INFO L93 Difference]: Finished difference Result 2702 states and 4048 transitions. [2021-12-14 18:07:41,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 18:07:41,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2021-12-14 18:07:41,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:07:41,830 INFO L225 Difference]: With dead ends: 2702 [2021-12-14 18:07:41,834 INFO L226 Difference]: Without dead ends: 1366 [2021-12-14 18:07:41,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:07:41,851 INFO L933 BasicCegarLoop]: 1881 mSDtfsCounter, 536 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 648 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 3603 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2021-12-14 18:07:41,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 3603 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [648 Valid, 1190 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2021-12-14 18:07:41,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2021-12-14 18:07:41,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1315. [2021-12-14 18:07:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 990 states have (on average 1.4090909090909092) internal successors, (1395), 1004 states have internal predecessors, (1395), 263 states have call successors, (263), 62 states have call predecessors, (263), 61 states have return successors, (252), 251 states have call predecessors, (252), 252 states have call successors, (252) [2021-12-14 18:07:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1910 transitions. [2021-12-14 18:07:41,980 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1910 transitions. Word has length 119 [2021-12-14 18:07:41,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:07:41,980 INFO L470 AbstractCegarLoop]: Abstraction has 1315 states and 1910 transitions. [2021-12-14 18:07:41,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 18:07:41,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1910 transitions. [2021-12-14 18:07:41,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-14 18:07:41,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:07:41,983 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:07:41,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:07:41,983 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:07:41,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:07:41,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1510126037, now seen corresponding path program 1 times [2021-12-14 18:07:41,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:07:41,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879030541] [2021-12-14 18:07:41,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:07:41,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:07:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:07:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 18:07:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 18:07:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 18:07:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 18:07:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 18:07:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:07:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 18:07:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 18:07:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-12-14 18:07:42,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:07:42,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879030541] [2021-12-14 18:07:42,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879030541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:07:42,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:07:42,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:07:42,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055061171] [2021-12-14 18:07:42,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:07:42,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:07:42,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:07:42,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:07:42,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:07:42,319 INFO L87 Difference]: Start difference. First operand 1315 states and 1910 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-14 18:07:45,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:47,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:50,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:52,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:55,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:57,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:08:01,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:08:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:08:01,642 INFO L93 Difference]: Finished difference Result 2761 states and 4011 transitions. [2021-12-14 18:08:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:08:01,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 119 [2021-12-14 18:08:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:08:01,653 INFO L225 Difference]: With dead ends: 2761 [2021-12-14 18:08:01,655 INFO L226 Difference]: Without dead ends: 1472 [2021-12-14 18:08:01,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:08:01,661 INFO L933 BasicCegarLoop]: 1886 mSDtfsCounter, 712 mSDsluCounter, 3294 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 684 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 5180 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:08:01,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 5180 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 1527 Invalid, 6 Unknown, 0 Unchecked, 19.1s Time] [2021-12-14 18:08:01,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-12-14 18:08:01,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1400. [2021-12-14 18:08:01,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1054 states have (on average 1.4013282732447818) internal successors, (1477), 1069 states have internal predecessors, (1477), 273 states have call successors, (273), 73 states have call predecessors, (273), 72 states have return successors, (262), 260 states have call predecessors, (262), 262 states have call successors, (262) [2021-12-14 18:08:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2012 transitions. [2021-12-14 18:08:01,718 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2012 transitions. Word has length 119 [2021-12-14 18:08:01,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:08:01,721 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 2012 transitions. [2021-12-14 18:08:01,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-14 18:08:01,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2012 transitions. [2021-12-14 18:08:01,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-14 18:08:01,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:08:01,724 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 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] [2021-12-14 18:08:01,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:08:01,724 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:08:01,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:08:01,724 INFO L85 PathProgramCache]: Analyzing trace with hash -623688502, now seen corresponding path program 1 times [2021-12-14 18:08:01,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:08:01,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386689501] [2021-12-14 18:08:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:08:01,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:08:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:08:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:08:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 18:08:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 18:08:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 18:08:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 18:08:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 18:08:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:08:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 18:08:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 18:08:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:08:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 18:08:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 18:08:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 18:08:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-12-14 18:08:01,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:08:01,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386689501] [2021-12-14 18:08:01,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386689501] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:08:01,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:08:01,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:08:01,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219250564] [2021-12-14 18:08:01,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:08:01,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:08:01,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:08:01,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:08:01,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:08:01,987 INFO L87 Difference]: Start difference. First operand 1400 states and 2012 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 18:08:05,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:08:08,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:08:11,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:08:13,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:08:13,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:08:13,901 INFO L93 Difference]: Finished difference Result 3904 states and 5652 transitions. [2021-12-14 18:08:13,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:08:13,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2021-12-14 18:08:13,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:08:13,919 INFO L225 Difference]: With dead ends: 3904 [2021-12-14 18:08:13,919 INFO L226 Difference]: Without dead ends: 2544 [2021-12-14 18:08:13,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:08:13,925 INFO L933 BasicCegarLoop]: 2082 mSDtfsCounter, 2727 mSDsluCounter, 2559 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 1772 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 4641 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1772 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-12-14 18:08:13,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2889 Valid, 4641 Invalid, 2910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1772 Valid, 1135 Invalid, 3 Unknown, 0 Unchecked, 11.7s Time] [2021-12-14 18:08:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-12-14 18:08:13,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2426. [2021-12-14 18:08:13,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 1839 states have (on average 1.401305057096248) internal successors, (2577), 1857 states have internal predecessors, (2577), 459 states have call successors, (459), 128 states have call predecessors, (459), 127 states have return successors, (448), 446 states have call predecessors, (448), 448 states have call successors, (448) [2021-12-14 18:08:13,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3484 transitions. [2021-12-14 18:08:13,994 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3484 transitions. Word has length 138 [2021-12-14 18:08:13,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:08:13,995 INFO L470 AbstractCegarLoop]: Abstraction has 2426 states and 3484 transitions. [2021-12-14 18:08:13,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 18:08:13,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3484 transitions. [2021-12-14 18:08:13,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-14 18:08:13,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:08:13,997 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:08:13,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:08:13,997 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:08:13,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:08:13,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1205946540, now seen corresponding path program 1 times [2021-12-14 18:08:13,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:08:13,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412228841] [2021-12-14 18:08:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:08:13,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:08:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:08:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:08:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 18:08:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 18:08:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 18:08:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 18:08:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 18:08:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:08:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 18:08:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 18:08:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:08:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:08:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 18:08:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:08:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:08:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 18:08:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:08:14,344 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-12-14 18:08:14,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:08:14,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412228841] [2021-12-14 18:08:14,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412228841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:08:14,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:08:14,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:08:14,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171201576] [2021-12-14 18:08:14,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:08:14,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:08:14,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:08:14,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:08:14,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:08:14,346 INFO L87 Difference]: Start difference. First operand 2426 states and 3484 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-14 18:08:16,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:08:18,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:08:22,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:08:24,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []