./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bf300fda993e6da191f561c0f8e677f22a7de271b61b51439ca8ec3e0ecdedef --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:38:07,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:38:07,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:38:07,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:38:07,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:38:07,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:38:07,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:38:07,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:38:07,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:38:07,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:38:07,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:38:07,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:38:07,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:38:07,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:38:07,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:38:07,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:38:07,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:38:07,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:38:07,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:38:07,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:38:07,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:38:07,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:38:07,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:38:07,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:38:07,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:38:07,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:38:07,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:38:07,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:38:07,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:38:07,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:38:07,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:38:07,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:38:07,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:38:07,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:38:07,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:38:07,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:38:07,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:38:07,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:38:07,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:38:07,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:38:07,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:38:07,769 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:38:07,792 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:38:07,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:38:07,793 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:38:07,793 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:38:07,794 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:38:07,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:38:07,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:38:07,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:38:07,795 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:38:07,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:38:07,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:38:07,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:38:07,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:38:07,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:38:07,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:38:07,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:38:07,796 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:38:07,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:38:07,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:38:07,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:38:07,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:38:07,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:38:07,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:38:07,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:38:07,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:38:07,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:38:07,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:38:07,798 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:38:07,798 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:38:07,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:38:07,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:38:07,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf300fda993e6da191f561c0f8e677f22a7de271b61b51439ca8ec3e0ecdedef [2021-12-14 17:38:07,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:38:08,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:38:08,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:38:08,014 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:38:08,015 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:38:08,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2021-12-14 17:38:08,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3798d0e9/eada9062dc334ecfb2cb753c18338e10/FLAGfafe39ea1 [2021-12-14 17:38:08,559 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:38:08,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2021-12-14 17:38:08,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3798d0e9/eada9062dc334ecfb2cb753c18338e10/FLAGfafe39ea1 [2021-12-14 17:38:08,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3798d0e9/eada9062dc334ecfb2cb753c18338e10 [2021-12-14 17:38:08,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:38:08,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:38:08,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:38:08,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:38:08,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:38:08,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:38:08" (1/1) ... [2021-12-14 17:38:08,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5bd0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:08, skipping insertion in model container [2021-12-14 17:38:08,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:38:08" (1/1) ... [2021-12-14 17:38:08,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:38:08,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:38:09,479 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i[120339,120352] [2021-12-14 17:38:09,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:38:09,526 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:38:09,698 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i[120339,120352] [2021-12-14 17:38:09,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:38:09,742 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:38:09,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:09 WrapperNode [2021-12-14 17:38:09,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:38:09,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:38:09,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:38:09,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:38:09,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:09" (1/1) ... [2021-12-14 17:38:09,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:09" (1/1) ... [2021-12-14 17:38:09,861 INFO L137 Inliner]: procedures = 152, calls = 622, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 1714 [2021-12-14 17:38:09,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:38:09,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:38:09,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:38:09,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:38:09,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:09" (1/1) ... [2021-12-14 17:38:09,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:09" (1/1) ... [2021-12-14 17:38:09,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:09" (1/1) ... [2021-12-14 17:38:09,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:09" (1/1) ... [2021-12-14 17:38:09,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:09" (1/1) ... [2021-12-14 17:38:09,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:09" (1/1) ... [2021-12-14 17:38:09,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:09" (1/1) ... [2021-12-14 17:38:10,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:38:10,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:38:10,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:38:10,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:38:10,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:09" (1/1) ... [2021-12-14 17:38:10,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:38:10,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:38:10,049 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 17:38:10,068 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 17:38:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-14 17:38:10,083 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-14 17:38:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure pci_bus_alloc_resource [2021-12-14 17:38:10,083 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_bus_alloc_resource [2021-12-14 17:38:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure add_interval [2021-12-14 17:38:10,083 INFO L138 BoogieDeclarations]: Found implementation of procedure add_interval [2021-12-14 17:38:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:38:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure sub_interval [2021-12-14 17:38:10,083 INFO L138 BoogieDeclarations]: Found implementation of procedure sub_interval [2021-12-14 17:38:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:38:10,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:38:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_find_mem_region [2021-12-14 17:38:10,084 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_find_mem_region [2021-12-14 17:38:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:38:10,084 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:38:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure free_region [2021-12-14 17:38:10,085 INFO L138 BoogieDeclarations]: Found implementation of procedure free_region [2021-12-14 17:38:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:38:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:38:10,085 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:38:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure __nonstatic_adjust_io_region [2021-12-14 17:38:10,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __nonstatic_adjust_io_region [2021-12-14 17:38:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:38:10,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:38:10,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:38:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:38:10,086 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_release_resource_db [2021-12-14 17:38:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_release_resource_db [2021-12-14 17:38:10,086 INFO L130 BoogieDeclarations]: Found specification of procedure do_mem_probe [2021-12-14 17:38:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure do_mem_probe [2021-12-14 17:38:10,086 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_make_resource [2021-12-14 17:38:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_make_resource [2021-12-14 17:38:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:38:10,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:38:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_init [2021-12-14 17:38:10,087 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_init [2021-12-14 17:38:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_find_io [2021-12-14 17:38:10,087 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_find_io [2021-12-14 17:38:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:38:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 17:38:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 17:38:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure pccard_sysfs_add_rsrc [2021-12-14 17:38:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure pccard_sysfs_add_rsrc [2021-12-14 17:38:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:38:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure static_init [2021-12-14 17:38:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure static_init [2021-12-14 17:38:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:38:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:38:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure do_validate_mem [2021-12-14 17:38:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure do_validate_mem [2021-12-14 17:38:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_resource [2021-12-14 17:38:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_resource [2021-12-14 17:38:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_nonstatic_validate_mem [2021-12-14 17:38:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_nonstatic_validate_mem [2021-12-14 17:38:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:38:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure static_find_io [2021-12-14 17:38:10,090 INFO L138 BoogieDeclarations]: Found implementation of procedure static_find_io [2021-12-14 17:38:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2021-12-14 17:38:10,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2021-12-14 17:38:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure show_mem_db [2021-12-14 17:38:10,090 INFO L138 BoogieDeclarations]: Found implementation of procedure show_mem_db [2021-12-14 17:38:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_io [2021-12-14 17:38:10,091 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_io [2021-12-14 17:38:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:38:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-14 17:38:10,091 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-14 17:38:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:38:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 17:38:10,091 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 17:38:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:38:10,092 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:38:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:38:10,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:38:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-14 17:38:10,092 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-14 17:38:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:38:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2021-12-14 17:38:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2021-12-14 17:38:10,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pccard_static_ops_release_6 [2021-12-14 17:38:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pccard_static_ops_release_6 [2021-12-14 17:38:10,093 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_memory [2021-12-14 17:38:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_memory [2021-12-14 17:38:10,093 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_resource [2021-12-14 17:38:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_resource [2021-12-14 17:38:10,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pccard_static_ops_release_7 [2021-12-14 17:38:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pccard_static_ops_release_7 [2021-12-14 17:38:10,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:38:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:38:10,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ops_mutex_of_pcmcia_socket [2021-12-14 17:38:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ops_mutex_of_pcmcia_socket [2021-12-14 17:38:10,094 INFO L130 BoogieDeclarations]: Found specification of procedure claim_region [2021-12-14 17:38:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure claim_region [2021-12-14 17:38:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ops_mutex_of_pcmcia_socket [2021-12-14 17:38:10,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ops_mutex_of_pcmcia_socket [2021-12-14 17:38:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure show_io_db [2021-12-14 17:38:10,095 INFO L138 BoogieDeclarations]: Found implementation of procedure show_io_db [2021-12-14 17:38:10,422 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:38:10,424 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:38:11,406 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:38:11,414 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:38:11,414 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:38:11,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:38:11 BoogieIcfgContainer [2021-12-14 17:38:11,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:38:11,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:38:11,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:38:11,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:38:11,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:38:08" (1/3) ... [2021-12-14 17:38:11,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721a8eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:38:11, skipping insertion in model container [2021-12-14 17:38:11,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:09" (2/3) ... [2021-12-14 17:38:11,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721a8eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:38:11, skipping insertion in model container [2021-12-14 17:38:11,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:38:11" (3/3) ... [2021-12-14 17:38:11,421 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2021-12-14 17:38:11,425 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:38:11,425 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:38:11,454 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:38:11,458 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 17:38:11,459 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:38:11,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 701 states, 534 states have (on average 1.4400749063670413) internal successors, (769), 543 states have internal predecessors, (769), 123 states have call successors, (123), 42 states have call predecessors, (123), 42 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2021-12-14 17:38:11,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-14 17:38:11,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:11,484 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] [2021-12-14 17:38:11,484 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:11,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:11,487 INFO L85 PathProgramCache]: Analyzing trace with hash -404759991, now seen corresponding path program 1 times [2021-12-14 17:38:11,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:11,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791952809] [2021-12-14 17:38:11,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:11,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:38:11,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:11,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791952809] [2021-12-14 17:38:11,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791952809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:11,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:11,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:38:11,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575398224] [2021-12-14 17:38:11,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:11,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:38:11,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:11,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:38:11,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:11,791 INFO L87 Difference]: Start difference. First operand has 701 states, 534 states have (on average 1.4400749063670413) internal successors, (769), 543 states have internal predecessors, (769), 123 states have call successors, (123), 42 states have call predecessors, (123), 42 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:11,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:11,934 INFO L93 Difference]: Finished difference Result 2074 states and 3141 transitions. [2021-12-14 17:38:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:38:11,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-14 17:38:11,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:11,955 INFO L225 Difference]: With dead ends: 2074 [2021-12-14 17:38:11,956 INFO L226 Difference]: Without dead ends: 1372 [2021-12-14 17:38:11,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:11,966 INFO L933 BasicCegarLoop]: 1121 mSDtfsCounter, 970 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:11,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [970 Valid, 2112 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:38:11,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-12-14 17:38:12,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1368. [2021-12-14 17:38:12,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1045 states have (on average 1.4363636363636363) internal successors, (1501), 1054 states have internal predecessors, (1501), 240 states have call successors, (240), 83 states have call predecessors, (240), 82 states have return successors, (234), 234 states have call predecessors, (234), 234 states have call successors, (234) [2021-12-14 17:38:12,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1975 transitions. [2021-12-14 17:38:12,090 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1975 transitions. Word has length 20 [2021-12-14 17:38:12,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:12,091 INFO L470 AbstractCegarLoop]: Abstraction has 1368 states and 1975 transitions. [2021-12-14 17:38:12,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:12,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1975 transitions. [2021-12-14 17:38:12,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-14 17:38:12,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:12,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:38:12,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:38:12,095 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:12,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:12,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1675028569, now seen corresponding path program 1 times [2021-12-14 17:38:12,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:12,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443698102] [2021-12-14 17:38:12,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:12,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:38:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:38:12,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:12,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443698102] [2021-12-14 17:38:12,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443698102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:12,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:12,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:38:12,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412449182] [2021-12-14 17:38:12,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:12,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:38:12,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:12,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:38:12,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:38:12,186 INFO L87 Difference]: Start difference. First operand 1368 states and 1975 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 17:38:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:13,170 INFO L93 Difference]: Finished difference Result 4742 states and 6959 transitions. [2021-12-14 17:38:13,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:38:13,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2021-12-14 17:38:13,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:13,188 INFO L225 Difference]: With dead ends: 4742 [2021-12-14 17:38:13,188 INFO L226 Difference]: Without dead ends: 3377 [2021-12-14 17:38:13,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:38:13,194 INFO L933 BasicCegarLoop]: 1152 mSDtfsCounter, 1720 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 2679 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:13,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1799 Valid, 2679 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 17:38:13,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2021-12-14 17:38:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 2666. [2021-12-14 17:38:13,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 2041 states have (on average 1.4345908868201862) internal successors, (2928), 2054 states have internal predecessors, (2928), 460 states have call successors, (460), 165 states have call predecessors, (460), 164 states have return successors, (454), 454 states have call predecessors, (454), 454 states have call successors, (454) [2021-12-14 17:38:13,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3842 transitions. [2021-12-14 17:38:13,288 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3842 transitions. Word has length 28 [2021-12-14 17:38:13,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:13,289 INFO L470 AbstractCegarLoop]: Abstraction has 2666 states and 3842 transitions. [2021-12-14 17:38:13,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 17:38:13,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3842 transitions. [2021-12-14 17:38:13,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 17:38:13,290 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:13,290 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] [2021-12-14 17:38:13,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:38:13,291 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:13,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:13,291 INFO L85 PathProgramCache]: Analyzing trace with hash -848421556, now seen corresponding path program 1 times [2021-12-14 17:38:13,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:13,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885573992] [2021-12-14 17:38:13,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:13,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:13,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:38:13,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:13,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885573992] [2021-12-14 17:38:13,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885573992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:13,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:13,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:38:13,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440584128] [2021-12-14 17:38:13,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:13,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:38:13,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:13,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:38:13,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:13,335 INFO L87 Difference]: Start difference. First operand 2666 states and 3842 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:13,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:13,392 INFO L93 Difference]: Finished difference Result 2668 states and 3843 transitions. [2021-12-14 17:38:13,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:38:13,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-14 17:38:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:13,402 INFO L225 Difference]: With dead ends: 2668 [2021-12-14 17:38:13,402 INFO L226 Difference]: Without dead ends: 2665 [2021-12-14 17:38:13,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:13,404 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 981 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:13,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 999 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:38:13,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2021-12-14 17:38:13,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2665. [2021-12-14 17:38:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2041 states have (on average 1.4341009309162176) internal successors, (2927), 2053 states have internal predecessors, (2927), 459 states have call successors, (459), 165 states have call predecessors, (459), 164 states have return successors, (454), 454 states have call predecessors, (454), 454 states have call successors, (454) [2021-12-14 17:38:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 3840 transitions. [2021-12-14 17:38:13,515 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 3840 transitions. Word has length 22 [2021-12-14 17:38:13,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:13,515 INFO L470 AbstractCegarLoop]: Abstraction has 2665 states and 3840 transitions. [2021-12-14 17:38:13,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:13,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 3840 transitions. [2021-12-14 17:38:13,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-14 17:38:13,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:13,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:38:13,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:38:13,517 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:13,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:13,518 INFO L85 PathProgramCache]: Analyzing trace with hash -531608048, now seen corresponding path program 1 times [2021-12-14 17:38:13,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:13,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415870867] [2021-12-14 17:38:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:13,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:38:13,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:13,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415870867] [2021-12-14 17:38:13,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415870867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:13,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:13,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:38:13,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278443997] [2021-12-14 17:38:13,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:13,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:38:13,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:13,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:38:13,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:13,556 INFO L87 Difference]: Start difference. First operand 2665 states and 3840 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:13,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:13,613 INFO L93 Difference]: Finished difference Result 2667 states and 3841 transitions. [2021-12-14 17:38:13,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:38:13,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-14 17:38:13,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:13,623 INFO L225 Difference]: With dead ends: 2667 [2021-12-14 17:38:13,623 INFO L226 Difference]: Without dead ends: 2664 [2021-12-14 17:38:13,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:13,624 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 978 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:13,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 997 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:38:13,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-12-14 17:38:13,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2664. [2021-12-14 17:38:13,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2664 states, 2041 states have (on average 1.433610975012249) internal successors, (2926), 2052 states have internal predecessors, (2926), 458 states have call successors, (458), 165 states have call predecessors, (458), 164 states have return successors, (454), 454 states have call predecessors, (454), 454 states have call successors, (454) [2021-12-14 17:38:13,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3838 transitions. [2021-12-14 17:38:13,707 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3838 transitions. Word has length 23 [2021-12-14 17:38:13,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:13,707 INFO L470 AbstractCegarLoop]: Abstraction has 2664 states and 3838 transitions. [2021-12-14 17:38:13,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3838 transitions. [2021-12-14 17:38:13,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-14 17:38:13,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:13,709 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] [2021-12-14 17:38:13,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:38:13,709 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:13,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:13,710 INFO L85 PathProgramCache]: Analyzing trace with hash 699680975, now seen corresponding path program 1 times [2021-12-14 17:38:13,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:13,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453984325] [2021-12-14 17:38:13,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:13,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:38:13,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:13,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453984325] [2021-12-14 17:38:13,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453984325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:13,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:13,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:38:13,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245784084] [2021-12-14 17:38:13,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:13,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:38:13,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:13,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:38:13,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:13,758 INFO L87 Difference]: Start difference. First operand 2664 states and 3838 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:13,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:13,895 INFO L93 Difference]: Finished difference Result 2666 states and 3839 transitions. [2021-12-14 17:38:13,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:38:13,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-14 17:38:13,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:13,905 INFO L225 Difference]: With dead ends: 2666 [2021-12-14 17:38:13,919 INFO L226 Difference]: Without dead ends: 2663 [2021-12-14 17:38:13,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:13,921 INFO L933 BasicCegarLoop]: 995 mSDtfsCounter, 975 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:13,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 995 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:38:13,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2021-12-14 17:38:14,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2663. [2021-12-14 17:38:14,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2041 states have (on average 1.4331210191082802) internal successors, (2925), 2051 states have internal predecessors, (2925), 457 states have call successors, (457), 165 states have call predecessors, (457), 164 states have return successors, (454), 454 states have call predecessors, (454), 454 states have call successors, (454) [2021-12-14 17:38:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3836 transitions. [2021-12-14 17:38:14,034 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3836 transitions. Word has length 24 [2021-12-14 17:38:14,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:14,035 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 3836 transitions. [2021-12-14 17:38:14,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:14,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3836 transitions. [2021-12-14 17:38:14,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-14 17:38:14,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:14,036 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] [2021-12-14 17:38:14,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:38:14,037 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:14,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:14,037 INFO L85 PathProgramCache]: Analyzing trace with hash 876720022, now seen corresponding path program 1 times [2021-12-14 17:38:14,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:14,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599350552] [2021-12-14 17:38:14,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:14,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:14,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:38:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:14,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:38:14,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:14,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599350552] [2021-12-14 17:38:14,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599350552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:14,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:14,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:38:14,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685606096] [2021-12-14 17:38:14,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:14,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:38:14,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:14,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:38:14,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:38:14,079 INFO L87 Difference]: Start difference. First operand 2663 states and 3836 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 17:38:15,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:15,049 INFO L93 Difference]: Finished difference Result 9271 states and 13570 transitions. [2021-12-14 17:38:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:38:15,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-12-14 17:38:15,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:15,080 INFO L225 Difference]: With dead ends: 9271 [2021-12-14 17:38:15,080 INFO L226 Difference]: Without dead ends: 6611 [2021-12-14 17:38:15,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:38:15,091 INFO L933 BasicCegarLoop]: 1287 mSDtfsCounter, 1652 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:15,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1734 Valid, 2869 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 17:38:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6611 states. [2021-12-14 17:38:15,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6611 to 5207. [2021-12-14 17:38:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 3995 states have (on average 1.4315394242803505) internal successors, (5719), 4013 states have internal predecessors, (5719), 883 states have call successors, (883), 329 states have call predecessors, (883), 328 states have return successors, (880), 880 states have call predecessors, (880), 880 states have call successors, (880) [2021-12-14 17:38:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 7482 transitions. [2021-12-14 17:38:15,334 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 7482 transitions. Word has length 30 [2021-12-14 17:38:15,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:15,334 INFO L470 AbstractCegarLoop]: Abstraction has 5207 states and 7482 transitions. [2021-12-14 17:38:15,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 17:38:15,335 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 7482 transitions. [2021-12-14 17:38:15,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-14 17:38:15,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:15,336 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] [2021-12-14 17:38:15,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:38:15,336 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:15,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:15,337 INFO L85 PathProgramCache]: Analyzing trace with hash 214939891, now seen corresponding path program 1 times [2021-12-14 17:38:15,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:15,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111892196] [2021-12-14 17:38:15,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:15,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:38:15,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:15,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111892196] [2021-12-14 17:38:15,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111892196] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:15,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:15,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:38:15,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297716337] [2021-12-14 17:38:15,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:15,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:38:15,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:15,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:38:15,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:15,374 INFO L87 Difference]: Start difference. First operand 5207 states and 7482 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:15,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:15,523 INFO L93 Difference]: Finished difference Result 11493 states and 16556 transitions. [2021-12-14 17:38:15,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:38:15,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-14 17:38:15,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:15,546 INFO L225 Difference]: With dead ends: 11493 [2021-12-14 17:38:15,546 INFO L226 Difference]: Without dead ends: 6282 [2021-12-14 17:38:15,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:15,562 INFO L933 BasicCegarLoop]: 1113 mSDtfsCounter, 923 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:15,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 1511 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:38:15,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-12-14 17:38:15,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6252. [2021-12-14 17:38:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 4789 states have (on average 1.418458968469409) internal successors, (6793), 4818 states have internal predecessors, (6793), 1044 states have call successors, (1044), 432 states have call predecessors, (1044), 418 states have return successors, (1064), 1025 states have call predecessors, (1064), 1040 states have call successors, (1064) [2021-12-14 17:38:15,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 8901 transitions. [2021-12-14 17:38:15,831 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 8901 transitions. Word has length 25 [2021-12-14 17:38:15,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:15,832 INFO L470 AbstractCegarLoop]: Abstraction has 6252 states and 8901 transitions. [2021-12-14 17:38:15,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:15,832 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 8901 transitions. [2021-12-14 17:38:15,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-14 17:38:15,837 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:15,838 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:38:15,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:38:15,838 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:15,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:15,838 INFO L85 PathProgramCache]: Analyzing trace with hash 705413493, now seen corresponding path program 1 times [2021-12-14 17:38:15,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:15,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931349227] [2021-12-14 17:38:15,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:15,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:15,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:38:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:15,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 17:38:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:15,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:38:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 17:38:15,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:15,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931349227] [2021-12-14 17:38:15,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931349227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:15,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:15,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:38:15,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632131330] [2021-12-14 17:38:15,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:15,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:38:15,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:15,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:38:15,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:38:15,904 INFO L87 Difference]: Start difference. First operand 6252 states and 8901 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:38:17,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:17,391 INFO L93 Difference]: Finished difference Result 9814 states and 14385 transitions. [2021-12-14 17:38:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:38:17,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2021-12-14 17:38:17,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:17,444 INFO L225 Difference]: With dead ends: 9814 [2021-12-14 17:38:17,444 INFO L226 Difference]: Without dead ends: 8774 [2021-12-14 17:38:17,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:38:17,453 INFO L933 BasicCegarLoop]: 1195 mSDtfsCounter, 1521 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 676 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:17,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 2621 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [676 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 17:38:17,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8774 states. [2021-12-14 17:38:17,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8774 to 6232. [2021-12-14 17:38:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6232 states, 4776 states have (on average 1.4170854271356783) internal successors, (6768), 4808 states have internal predecessors, (6768), 1037 states have call successors, (1037), 429 states have call predecessors, (1037), 418 states have return successors, (1024), 1018 states have call predecessors, (1024), 1024 states have call successors, (1024) [2021-12-14 17:38:17,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 8829 transitions. [2021-12-14 17:38:17,752 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 8829 transitions. Word has length 57 [2021-12-14 17:38:17,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:17,753 INFO L470 AbstractCegarLoop]: Abstraction has 6232 states and 8829 transitions. [2021-12-14 17:38:17,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:38:17,755 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 8829 transitions. [2021-12-14 17:38:17,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-14 17:38:17,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:17,769 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:38:17,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 17:38:17,769 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:17,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:17,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1346697186, now seen corresponding path program 1 times [2021-12-14 17:38:17,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:17,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872788001] [2021-12-14 17:38:17,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:17,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:17,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:38:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:17,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:17,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:17,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:38:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:17,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:17,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:17,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:17,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:17,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 17:38:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:17,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-14 17:38:17,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:17,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872788001] [2021-12-14 17:38:17,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872788001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:17,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:17,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:38:17,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777014314] [2021-12-14 17:38:17,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:17,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:38:17,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:17,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:38:17,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:38:17,966 INFO L87 Difference]: Start difference. First operand 6232 states and 8829 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:38:20,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:20,301 INFO L93 Difference]: Finished difference Result 23926 states and 34961 transitions. [2021-12-14 17:38:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:38:20,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 124 [2021-12-14 17:38:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:20,371 INFO L225 Difference]: With dead ends: 23926 [2021-12-14 17:38:20,371 INFO L226 Difference]: Without dead ends: 17697 [2021-12-14 17:38:20,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:38:20,396 INFO L933 BasicCegarLoop]: 1275 mSDtfsCounter, 1793 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 3340 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:20,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1887 Valid, 3340 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 17:38:20,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17697 states. [2021-12-14 17:38:20,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17697 to 12272. [2021-12-14 17:38:20,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12272 states, 9406 states have (on average 1.4133531788220286) internal successors, (13294), 9470 states have internal predecessors, (13294), 2029 states have call successors, (2029), 855 states have call predecessors, (2029), 836 states have return successors, (2008), 1994 states have call predecessors, (2008), 2008 states have call successors, (2008) [2021-12-14 17:38:20,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12272 states to 12272 states and 17331 transitions. [2021-12-14 17:38:20,915 INFO L78 Accepts]: Start accepts. Automaton has 12272 states and 17331 transitions. Word has length 124 [2021-12-14 17:38:20,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:20,917 INFO L470 AbstractCegarLoop]: Abstraction has 12272 states and 17331 transitions. [2021-12-14 17:38:20,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:38:20,918 INFO L276 IsEmpty]: Start isEmpty. Operand 12272 states and 17331 transitions. [2021-12-14 17:38:20,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-14 17:38:20,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:20,947 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:38:20,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 17:38:20,947 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:20,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:20,948 INFO L85 PathProgramCache]: Analyzing trace with hash 262411884, now seen corresponding path program 1 times [2021-12-14 17:38:20,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:20,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597471807] [2021-12-14 17:38:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:20,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:21,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 17:38:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:21,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:21,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:21,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:21,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:21,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:38:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:21,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:21,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:21,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:21,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:21,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:38:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:21,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-14 17:38:21,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:21,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597471807] [2021-12-14 17:38:21,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597471807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:21,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:21,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:38:21,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453279397] [2021-12-14 17:38:21,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:21,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:38:21,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:21,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:38:21,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:38:21,091 INFO L87 Difference]: Start difference. First operand 12272 states and 17331 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:38:23,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:23,761 INFO L93 Difference]: Finished difference Result 42274 states and 61523 transitions. [2021-12-14 17:38:23,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:38:23,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 126 [2021-12-14 17:38:23,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:23,908 INFO L225 Difference]: With dead ends: 42274 [2021-12-14 17:38:23,908 INFO L226 Difference]: Without dead ends: 30005 [2021-12-14 17:38:23,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:38:23,954 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 1844 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 3612 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:23,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1941 Valid, 3612 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 17:38:23,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30005 states. [2021-12-14 17:38:24,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30005 to 20916. [2021-12-14 17:38:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20916 states, 16030 states have (on average 1.4122270742358078) internal successors, (22638), 16142 states have internal predecessors, (22638), 3449 states have call successors, (3449), 1471 states have call predecessors, (3449), 1436 states have return successors, (3412), 3382 states have call predecessors, (3412), 3412 states have call successors, (3412) [2021-12-14 17:38:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20916 states to 20916 states and 29499 transitions. [2021-12-14 17:38:24,872 INFO L78 Accepts]: Start accepts. Automaton has 20916 states and 29499 transitions. Word has length 126 [2021-12-14 17:38:24,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:24,873 INFO L470 AbstractCegarLoop]: Abstraction has 20916 states and 29499 transitions. [2021-12-14 17:38:24,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:38:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand 20916 states and 29499 transitions. [2021-12-14 17:38:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-14 17:38:24,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:24,917 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:38:24,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 17:38:24,918 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:24,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:24,918 INFO L85 PathProgramCache]: Analyzing trace with hash -284839104, now seen corresponding path program 1 times [2021-12-14 17:38:24,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:24,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558044580] [2021-12-14 17:38:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:24,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:38:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:25,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:25,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:25,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:25,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:25,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:38:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:25,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:25,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:25,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:25,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:38:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:25,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-14 17:38:25,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:25,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558044580] [2021-12-14 17:38:25,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558044580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:25,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:25,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:38:25,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345500424] [2021-12-14 17:38:25,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:25,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:38:25,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:25,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:38:25,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:38:25,107 INFO L87 Difference]: Start difference. First operand 20916 states and 29499 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:38:26,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:26,832 INFO L93 Difference]: Finished difference Result 50925 states and 73739 transitions. [2021-12-14 17:38:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:38:26,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 141 [2021-12-14 17:38:26,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:26,946 INFO L225 Difference]: With dead ends: 50925 [2021-12-14 17:38:26,946 INFO L226 Difference]: Without dead ends: 30012 [2021-12-14 17:38:26,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:38:26,993 INFO L933 BasicCegarLoop]: 952 mSDtfsCounter, 706 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:26,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 2433 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 17:38:27,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30012 states. [2021-12-14 17:38:27,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30012 to 20940. [2021-12-14 17:38:27,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20940 states, 16054 states have (on average 1.4116108135044225) internal successors, (22662), 16166 states have internal predecessors, (22662), 3449 states have call successors, (3449), 1471 states have call predecessors, (3449), 1436 states have return successors, (3412), 3382 states have call predecessors, (3412), 3412 states have call successors, (3412) [2021-12-14 17:38:27,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20940 states to 20940 states and 29523 transitions. [2021-12-14 17:38:27,863 INFO L78 Accepts]: Start accepts. Automaton has 20940 states and 29523 transitions. Word has length 141 [2021-12-14 17:38:27,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:27,864 INFO L470 AbstractCegarLoop]: Abstraction has 20940 states and 29523 transitions. [2021-12-14 17:38:27,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:38:27,864 INFO L276 IsEmpty]: Start isEmpty. Operand 20940 states and 29523 transitions. [2021-12-14 17:38:27,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-14 17:38:27,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:27,909 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:38:27,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 17:38:27,909 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:27,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:27,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1323423678, now seen corresponding path program 1 times [2021-12-14 17:38:27,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:27,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701582676] [2021-12-14 17:38:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:27,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:28,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:38:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:28,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:28,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:28,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:28,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:38:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:28,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:28,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:28,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:28,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:28,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:38:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:28,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-14 17:38:28,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:28,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701582676] [2021-12-14 17:38:28,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701582676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:28,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:28,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:38:28,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511669796] [2021-12-14 17:38:28,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:28,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:38:28,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:28,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:38:28,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:38:28,176 INFO L87 Difference]: Start difference. First operand 20940 states and 29523 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:38:30,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:30,279 INFO L93 Difference]: Finished difference Result 51509 states and 74963 transitions. [2021-12-14 17:38:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:38:30,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 141 [2021-12-14 17:38:30,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:30,514 INFO L225 Difference]: With dead ends: 51509 [2021-12-14 17:38:30,514 INFO L226 Difference]: Without dead ends: 30572 [2021-12-14 17:38:30,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:38:30,554 INFO L933 BasicCegarLoop]: 963 mSDtfsCounter, 446 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:30,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 2808 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 17:38:30,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30572 states. [2021-12-14 17:38:31,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30572 to 21020. [2021-12-14 17:38:31,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21020 states, 16134 states have (on average 1.4120490888806247) internal successors, (22782), 16246 states have internal predecessors, (22782), 3449 states have call successors, (3449), 1471 states have call predecessors, (3449), 1436 states have return successors, (3412), 3382 states have call predecessors, (3412), 3412 states have call successors, (3412) [2021-12-14 17:38:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21020 states to 21020 states and 29643 transitions. [2021-12-14 17:38:31,330 INFO L78 Accepts]: Start accepts. Automaton has 21020 states and 29643 transitions. Word has length 141 [2021-12-14 17:38:31,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:31,331 INFO L470 AbstractCegarLoop]: Abstraction has 21020 states and 29643 transitions. [2021-12-14 17:38:31,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:38:31,331 INFO L276 IsEmpty]: Start isEmpty. Operand 21020 states and 29643 transitions. [2021-12-14 17:38:31,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-14 17:38:31,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:31,368 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:38:31,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 17:38:31,368 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:31,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:31,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1652804509, now seen corresponding path program 1 times [2021-12-14 17:38:31,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:31,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008777893] [2021-12-14 17:38:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:31,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:38:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:31,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:31,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:31,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:38:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:31,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:31,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:31,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 17:38:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:31,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 17:38:31,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:31,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008777893] [2021-12-14 17:38:31,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008777893] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:38:31,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947964151] [2021-12-14 17:38:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:31,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:38:31,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:38:31,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:38:31,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:38:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:32,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-14 17:38:32,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:38:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 17:38:32,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:38:32,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947964151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:32,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:38:32,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2021-12-14 17:38:32,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595310680] [2021-12-14 17:38:32,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:32,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 17:38:32,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:32,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 17:38:32,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=747, Unknown=0, NotChecked=0, Total=812 [2021-12-14 17:38:32,811 INFO L87 Difference]: Start difference. First operand 21020 states and 29643 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 13 states have internal predecessors, (98), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-14 17:38:33,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:33,939 INFO L93 Difference]: Finished difference Result 44389 states and 63427 transitions. [2021-12-14 17:38:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-14 17:38:33,940 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 13 states have internal predecessors, (98), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 140 [2021-12-14 17:38:33,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:34,132 INFO L225 Difference]: With dead ends: 44389 [2021-12-14 17:38:34,132 INFO L226 Difference]: Without dead ends: 23372 [2021-12-14 17:38:34,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2021-12-14 17:38:34,169 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 1256 mSDsluCounter, 14550 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 15522 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:34,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1269 Valid, 15522 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:38:34,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23372 states. [2021-12-14 17:38:34,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23372 to 22924. [2021-12-14 17:38:34,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22924 states, 17582 states have (on average 1.4081446934364692) internal successors, (24758), 17694 states have internal predecessors, (24758), 3737 states have call successors, (3737), 1519 states have call predecessors, (3737), 1604 states have return successors, (4044), 3790 states have call predecessors, (4044), 3700 states have call successors, (4044) [2021-12-14 17:38:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22924 states to 22924 states and 32539 transitions. [2021-12-14 17:38:34,871 INFO L78 Accepts]: Start accepts. Automaton has 22924 states and 32539 transitions. Word has length 140 [2021-12-14 17:38:34,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:34,872 INFO L470 AbstractCegarLoop]: Abstraction has 22924 states and 32539 transitions. [2021-12-14 17:38:34,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 13 states have internal predecessors, (98), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-14 17:38:34,872 INFO L276 IsEmpty]: Start isEmpty. Operand 22924 states and 32539 transitions. [2021-12-14 17:38:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-14 17:38:34,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:34,907 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:38:34,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-14 17:38:35,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-14 17:38:35,128 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:35,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:35,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1006535054, now seen corresponding path program 1 times [2021-12-14 17:38:35,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:35,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665739791] [2021-12-14 17:38:35,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:35,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:35,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:38:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:35,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:35,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:35,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:35,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:35,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:38:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:35,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:35,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:35,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:35,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:35,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 17:38:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:35,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 17:38:35,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:35,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665739791] [2021-12-14 17:38:35,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665739791] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:38:35,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325607561] [2021-12-14 17:38:35,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:35,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:38:35,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:38:35,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:38:35,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:38:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:36,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-14 17:38:36,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:38:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 17:38:36,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:38:36,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325607561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:36,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:38:36,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2021-12-14 17:38:36,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224824008] [2021-12-14 17:38:36,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:36,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:38:36,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:36,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:38:36,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2021-12-14 17:38:36,572 INFO L87 Difference]: Start difference. First operand 22924 states and 32539 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-14 17:38:37,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:37,581 INFO L93 Difference]: Finished difference Result 48341 states and 69379 transitions. [2021-12-14 17:38:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:38:37,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 143 [2021-12-14 17:38:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:37,821 INFO L225 Difference]: With dead ends: 48341 [2021-12-14 17:38:37,821 INFO L226 Difference]: Without dead ends: 25420 [2021-12-14 17:38:37,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2021-12-14 17:38:37,864 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 149 mSDsluCounter, 5023 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 6039 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:37,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 6039 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:38:37,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25420 states. [2021-12-14 17:38:38,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25420 to 24076. [2021-12-14 17:38:38,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24076 states, 18390 states have (on average 1.399347471451876) internal successors, (25734), 18502 states have internal predecessors, (25734), 4017 states have call successors, (4017), 1583 states have call predecessors, (4017), 1668 states have return successors, (4452), 4070 states have call predecessors, (4452), 3980 states have call successors, (4452) [2021-12-14 17:38:38,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24076 states to 24076 states and 34203 transitions. [2021-12-14 17:38:38,651 INFO L78 Accepts]: Start accepts. Automaton has 24076 states and 34203 transitions. Word has length 143 [2021-12-14 17:38:38,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:38,652 INFO L470 AbstractCegarLoop]: Abstraction has 24076 states and 34203 transitions. [2021-12-14 17:38:38,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-14 17:38:38,652 INFO L276 IsEmpty]: Start isEmpty. Operand 24076 states and 34203 transitions. [2021-12-14 17:38:38,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 17:38:38,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:38,801 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:38:38,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:38:39,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-14 17:38:39,002 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:39,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:39,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1463893165, now seen corresponding path program 1 times [2021-12-14 17:38:39,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:39,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584918174] [2021-12-14 17:38:39,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:39,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:39,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:38:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:39,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:39,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:39,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:39,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:39,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:38:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:39,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:39,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:39,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:39,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:39,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 17:38:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:39,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:39,274 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-14 17:38:39,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:39,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584918174] [2021-12-14 17:38:39,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584918174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:39,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:39,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 17:38:39,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150655123] [2021-12-14 17:38:39,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:39,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 17:38:39,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:39,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 17:38:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:38:39,277 INFO L87 Difference]: Start difference. First operand 24076 states and 34203 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-14 17:38:41,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:41,691 INFO L93 Difference]: Finished difference Result 57005 states and 83427 transitions. [2021-12-14 17:38:41,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:38:41,692 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 146 [2021-12-14 17:38:41,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:41,880 INFO L225 Difference]: With dead ends: 57005 [2021-12-14 17:38:41,881 INFO L226 Difference]: Without dead ends: 32932 [2021-12-14 17:38:41,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:38:41,930 INFO L933 BasicCegarLoop]: 936 mSDtfsCounter, 706 mSDsluCounter, 5643 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 6579 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:41,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 6579 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 17:38:41,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32932 states. [2021-12-14 17:38:43,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32932 to 24316. [2021-12-14 17:38:43,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24316 states, 18590 states have (on average 1.3950511027434105) internal successors, (25934), 18662 states have internal predecessors, (25934), 4017 states have call successors, (4017), 1583 states have call predecessors, (4017), 1708 states have return successors, (4532), 4150 states have call predecessors, (4532), 3980 states have call successors, (4532) [2021-12-14 17:38:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24316 states to 24316 states and 34483 transitions. [2021-12-14 17:38:43,177 INFO L78 Accepts]: Start accepts. Automaton has 24316 states and 34483 transitions. Word has length 146 [2021-12-14 17:38:43,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:43,178 INFO L470 AbstractCegarLoop]: Abstraction has 24316 states and 34483 transitions. [2021-12-14 17:38:43,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-14 17:38:43,179 INFO L276 IsEmpty]: Start isEmpty. Operand 24316 states and 34483 transitions. [2021-12-14 17:38:43,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-14 17:38:43,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:43,216 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:38:43,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 17:38:43,216 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:43,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:43,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1966918471, now seen corresponding path program 1 times [2021-12-14 17:38:43,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:43,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898824179] [2021-12-14 17:38:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:43,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:38:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:43,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:43,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:43,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:43,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:43,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:38:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:43,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:43,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:43,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:43,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:43,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 17:38:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:43,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-14 17:38:43,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:43,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898824179] [2021-12-14 17:38:43,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898824179] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:38:43,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910685111] [2021-12-14 17:38:43,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:43,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:38:43,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:38:43,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:38:43,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 17:38:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:44,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-14 17:38:44,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:38:44,419 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-14 17:38:44,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:38:44,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910685111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:44,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:38:44,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [17] total 17 [2021-12-14 17:38:44,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308674412] [2021-12-14 17:38:44,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:44,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-14 17:38:44,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:44,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-14 17:38:44,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-12-14 17:38:44,421 INFO L87 Difference]: Start difference. First operand 24316 states and 34483 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 11 states have internal predecessors, (105), 2 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 17:38:45,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:45,910 INFO L93 Difference]: Finished difference Result 49461 states and 70811 transitions. [2021-12-14 17:38:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 17:38:45,911 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 11 states have internal predecessors, (105), 2 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) Word has length 149 [2021-12-14 17:38:45,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:46,014 INFO L225 Difference]: With dead ends: 49461 [2021-12-14 17:38:46,014 INFO L226 Difference]: Without dead ends: 25148 [2021-12-14 17:38:46,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 170 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:38:46,088 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 24 mSDsluCounter, 13029 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 14035 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:46,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 14035 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:38:46,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25148 states. [2021-12-14 17:38:47,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25148 to 24516. [2021-12-14 17:38:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24516 states, 18750 states have (on average 1.39168) internal successors, (26094), 18822 states have internal predecessors, (26094), 4017 states have call successors, (4017), 1583 states have call predecessors, (4017), 1748 states have return successors, (4620), 4190 states have call predecessors, (4620), 3980 states have call successors, (4620) [2021-12-14 17:38:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24516 states to 24516 states and 34731 transitions. [2021-12-14 17:38:47,098 INFO L78 Accepts]: Start accepts. Automaton has 24516 states and 34731 transitions. Word has length 149 [2021-12-14 17:38:47,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:47,099 INFO L470 AbstractCegarLoop]: Abstraction has 24516 states and 34731 transitions. [2021-12-14 17:38:47,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 11 states have internal predecessors, (105), 2 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 17:38:47,099 INFO L276 IsEmpty]: Start isEmpty. Operand 24516 states and 34731 transitions. [2021-12-14 17:38:47,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-14 17:38:47,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:47,135 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:38:47,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 17:38:47,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:38:47,371 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:47,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:47,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1998476603, now seen corresponding path program 1 times [2021-12-14 17:38:47,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:47,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539326459] [2021-12-14 17:38:47,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:47,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:47,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:38:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:47,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:47,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:47,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:38:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:47,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:47,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:47,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:47,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:47,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 17:38:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:47,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 17:38:47,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:47,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539326459] [2021-12-14 17:38:47,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539326459] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:38:47,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832751711] [2021-12-14 17:38:47,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:47,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:38:47,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:38:47,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:38:47,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 17:38:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:48,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-14 17:38:48,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:38:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 17:38:48,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:38:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 17:38:49,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832751711] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:38:49,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:38:49,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 16] total 35 [2021-12-14 17:38:49,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30322835] [2021-12-14 17:38:49,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:38:49,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-14 17:38:49,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:49,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-14 17:38:49,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1108, Unknown=0, NotChecked=0, Total=1190 [2021-12-14 17:38:49,510 INFO L87 Difference]: Start difference. First operand 24516 states and 34731 transitions. Second operand has 35 states, 35 states have (on average 4.114285714285714) internal successors, (144), 22 states have internal predecessors, (144), 4 states have call successors, (25), 4 states have call predecessors, (25), 12 states have return successors, (22), 15 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-14 17:38:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:55,424 INFO L93 Difference]: Finished difference Result 68285 states and 106907 transitions. [2021-12-14 17:38:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-14 17:38:55,425 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.114285714285714) internal successors, (144), 22 states have internal predecessors, (144), 4 states have call successors, (25), 4 states have call predecessors, (25), 12 states have return successors, (22), 15 states have call predecessors, (22), 4 states have call successors, (22) Word has length 143 [2021-12-14 17:38:55,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:55,700 INFO L225 Difference]: With dead ends: 68285 [2021-12-14 17:38:55,700 INFO L226 Difference]: Without dead ends: 43772 [2021-12-14 17:38:55,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 291 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=206, Invalid=2764, Unknown=0, NotChecked=0, Total=2970 [2021-12-14 17:38:55,762 INFO L933 BasicCegarLoop]: 1024 mSDtfsCounter, 531 mSDsluCounter, 24151 mSDsCounter, 0 mSdLazyCounter, 6334 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 25175 SdHoareTripleChecker+Invalid, 6592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 6334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:55,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 25175 Invalid, 6592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 6334 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-14 17:38:55,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43772 states. [2021-12-14 17:38:56,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43772 to 25308. [2021-12-14 17:38:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25308 states, 19334 states have (on average 1.3777800765490844) internal successors, (26638), 19398 states have internal predecessors, (26638), 4105 states have call successors, (4105), 1583 states have call predecessors, (4105), 1868 states have return successors, (5324), 4406 states have call predecessors, (5324), 4068 states have call successors, (5324) [2021-12-14 17:38:57,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25308 states to 25308 states and 36067 transitions. [2021-12-14 17:38:57,057 INFO L78 Accepts]: Start accepts. Automaton has 25308 states and 36067 transitions. Word has length 143 [2021-12-14 17:38:57,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:57,058 INFO L470 AbstractCegarLoop]: Abstraction has 25308 states and 36067 transitions. [2021-12-14 17:38:57,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.114285714285714) internal successors, (144), 22 states have internal predecessors, (144), 4 states have call successors, (25), 4 states have call predecessors, (25), 12 states have return successors, (22), 15 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-14 17:38:57,058 INFO L276 IsEmpty]: Start isEmpty. Operand 25308 states and 36067 transitions. [2021-12-14 17:38:57,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-14 17:38:57,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:57,103 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:38:57,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 17:38:57,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-14 17:38:57,323 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:57,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1736427951, now seen corresponding path program 1 times [2021-12-14 17:38:57,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:57,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422087330] [2021-12-14 17:38:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:57,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:38:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 17:38:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:38:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 17:38:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-14 17:38:57,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:57,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422087330] [2021-12-14 17:38:57,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422087330] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:38:57,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780801449] [2021-12-14 17:38:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:57,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:38:57,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:38:57,703 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:38:57,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 17:38:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:58,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1681 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-14 17:38:58,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:38:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-14 17:38:58,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:38:58,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780801449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:58,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:38:58,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 19 [2021-12-14 17:38:58,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835947739] [2021-12-14 17:38:58,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:58,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 17:38:58,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:58,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 17:38:58,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:38:58,690 INFO L87 Difference]: Start difference. First operand 25308 states and 36067 transitions. Second operand has 14 states, 13 states have (on average 8.615384615384615) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-14 17:39:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:00,149 INFO L93 Difference]: Finished difference Result 51437 states and 73835 transitions. [2021-12-14 17:39:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 17:39:00,149 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.615384615384615) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 154 [2021-12-14 17:39:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:00,335 INFO L225 Difference]: With dead ends: 51437 [2021-12-14 17:39:00,335 INFO L226 Difference]: Without dead ends: 26132 [2021-12-14 17:39:00,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2021-12-14 17:39:00,460 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 1281 mSDsluCounter, 9669 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 10642 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:00,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1285 Valid, 10642 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 17:39:00,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26132 states. [2021-12-14 17:39:01,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26132 to 25644. [2021-12-14 17:39:01,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25644 states, 19574 states have (on average 1.3768264023704915) internal successors, (26950), 19686 states have internal predecessors, (26950), 4153 states have call successors, (4153), 1583 states have call predecessors, (4153), 1916 states have return successors, (5516), 4454 states have call predecessors, (5516), 4116 states have call successors, (5516) [2021-12-14 17:39:01,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25644 states to 25644 states and 36619 transitions. [2021-12-14 17:39:01,703 INFO L78 Accepts]: Start accepts. Automaton has 25644 states and 36619 transitions. Word has length 154 [2021-12-14 17:39:01,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:01,703 INFO L470 AbstractCegarLoop]: Abstraction has 25644 states and 36619 transitions. [2021-12-14 17:39:01,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.615384615384615) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-14 17:39:01,704 INFO L276 IsEmpty]: Start isEmpty. Operand 25644 states and 36619 transitions. [2021-12-14 17:39:01,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-14 17:39:01,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:01,744 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:39:01,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 17:39:01,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-14 17:39:01,960 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:01,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:01,961 INFO L85 PathProgramCache]: Analyzing trace with hash 647496787, now seen corresponding path program 1 times [2021-12-14 17:39:01,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:01,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826028756] [2021-12-14 17:39:01,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:01,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:02,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:39:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:02,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:39:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:02,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:02,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:02,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 17:39:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:02,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:39:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:02,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:02,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:02,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:02,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 17:39:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:02,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-14 17:39:02,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:02,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826028756] [2021-12-14 17:39:02,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826028756] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:39:02,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811455125] [2021-12-14 17:39:02,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:02,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:39:02,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:39:02,444 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:39:02,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 17:39:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:03,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-14 17:39:03,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:39:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 17:39:04,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:39:04,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811455125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:04,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:39:04,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [20] total 20 [2021-12-14 17:39:04,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782274169] [2021-12-14 17:39:04,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:04,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-14 17:39:04,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:04,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-14 17:39:04,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:39:04,179 INFO L87 Difference]: Start difference. First operand 25644 states and 36619 transitions. Second operand has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 13 states have internal predecessors, (112), 2 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (12), 7 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 17:39:05,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:05,410 INFO L93 Difference]: Finished difference Result 53429 states and 76771 transitions. [2021-12-14 17:39:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-14 17:39:05,410 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 13 states have internal predecessors, (112), 2 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (12), 7 states have call predecessors, (12), 2 states have call successors, (12) Word has length 154 [2021-12-14 17:39:05,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:05,522 INFO L225 Difference]: With dead ends: 53429 [2021-12-14 17:39:05,522 INFO L226 Difference]: Without dead ends: 27788 [2021-12-14 17:39:05,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 172 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2021-12-14 17:39:05,594 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 33 mSDsluCounter, 15712 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 16696 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:05,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 16696 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:39:05,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27788 states.