./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.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--misc--pch_phub.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 a5b351dc48b78577594847e2589a2433da4c3422ed74f69290b3f52d3ba2c2d2 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:37:07,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:37:07,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:37:07,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:37:07,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:37:07,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:37:07,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:37:07,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:37:07,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:37:07,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:37:07,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:37:07,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:37:07,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:37:07,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:37:07,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:37:07,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:37:07,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:37:07,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:37:07,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:37:07,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:37:07,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:37:07,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:37:07,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:37:07,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:37:07,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:37:07,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:37:07,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:37:07,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:37:07,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:37:07,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:37:07,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:37:07,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:37:07,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:37:07,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:37:07,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:37:07,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:37:07,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:37:07,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:37:07,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:37:07,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:37:07,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:37:07,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:37:07,719 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:37:07,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:37:07,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:37:07,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:37:07,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:37:07,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:37:07,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:37:07,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:37:07,722 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:37:07,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:37:07,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:37:07,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:37:07,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:37:07,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:37:07,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:37:07,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:37:07,724 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:37:07,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:37:07,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:37:07,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:37:07,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:37:07,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:37:07,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:37:07,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:37:07,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:37:07,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:37:07,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:37:07,726 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:37:07,727 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:37:07,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:37:07,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:37:07,727 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5b351dc48b78577594847e2589a2433da4c3422ed74f69290b3f52d3ba2c2d2 [2021-12-14 17:37:07,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:37:07,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:37:07,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:37:07,998 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:37:07,998 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:37:07,999 INFO L432 ainManager$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--misc--pch_phub.ko-main.cil.out.i [2021-12-14 17:37:08,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f82dfbad/f2c5f9000f9e454c9e2e3ed611444e7e/FLAG13173eaa3 [2021-12-14 17:37:08,670 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:37:08,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.i [2021-12-14 17:37:08,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f82dfbad/f2c5f9000f9e454c9e2e3ed611444e7e/FLAG13173eaa3 [2021-12-14 17:37:09,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f82dfbad/f2c5f9000f9e454c9e2e3ed611444e7e [2021-12-14 17:37:09,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:37:09,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:37:09,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:37:09,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:37:09,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:37:09,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:37:09" (1/1) ... [2021-12-14 17:37:09,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386f3117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:09, skipping insertion in model container [2021-12-14 17:37:09,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:37:09" (1/1) ... [2021-12-14 17:37:09,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:37:09,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:37:09,895 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--misc--pch_phub.ko-main.cil.out.i[106459,106472] [2021-12-14 17:37:09,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:37:09,993 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:37:10,128 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--misc--pch_phub.ko-main.cil.out.i[106459,106472] [2021-12-14 17:37:10,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:37:10,197 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:37:10,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:10 WrapperNode [2021-12-14 17:37:10,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:37:10,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:37:10,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:37:10,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:37:10,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:10" (1/1) ... [2021-12-14 17:37:10,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:10" (1/1) ... [2021-12-14 17:37:10,354 INFO L137 Inliner]: procedures = 128, calls = 740, calls flagged for inlining = 53, calls inlined = 47, statements flattened = 2000 [2021-12-14 17:37:10,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:37:10,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:37:10,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:37:10,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:37:10,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:10" (1/1) ... [2021-12-14 17:37:10,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:10" (1/1) ... [2021-12-14 17:37:10,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:10" (1/1) ... [2021-12-14 17:37:10,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:10" (1/1) ... [2021-12-14 17:37:10,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:10" (1/1) ... [2021-12-14 17:37:10,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:10" (1/1) ... [2021-12-14 17:37:10,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:10" (1/1) ... [2021-12-14 17:37:10,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:37:10,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:37:10,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:37:10,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:37:10,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:10" (1/1) ... [2021-12-14 17:37:10,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:37:10,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:37:10,517 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 17:37:10,542 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 17:37:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-14 17:37:10,560 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-14 17:37:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure pch_phub_remove [2021-12-14 17:37:10,560 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_phub_remove [2021-12-14 17:37:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-14 17:37:10,560 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-14 17:37:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:37:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_bin_file [2021-12-14 17:37:10,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_bin_file [2021-12-14 17:37:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure pch_phub_read_modify_write_reg [2021-12-14 17:37:10,561 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_phub_read_modify_write_reg [2021-12-14 17:37:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pch_phub_mutex [2021-12-14 17:37:10,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pch_phub_mutex [2021-12-14 17:37:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:37:10,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:37:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:37:10,562 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:37:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:37:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:37:10,562 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:37:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-14 17:37:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-14 17:37:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:37:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:37:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:37:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:37:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-14 17:37:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-14 17:37:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:37:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_file [2021-12-14 17:37:10,564 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_file [2021-12-14 17:37:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:37:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-12-14 17:37:10,564 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-12-14 17:37:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_rom [2021-12-14 17:37:10,565 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_rom [2021-12-14 17:37:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:37:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:37:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:37:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-14 17:37:10,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-14 17:37:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-14 17:37:10,566 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-14 17:37:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-12-14 17:37:10,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-12-14 17:37:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-12-14 17:37:10,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-12-14 17:37:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-14 17:37:10,567 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-14 17:37:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-12-14 17:37:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:37:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_pch_phub_mutex [2021-12-14 17:37:10,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_pch_phub_mutex [2021-12-14 17:37:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:37:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-14 17:37:10,568 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-14 17:37:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-14 17:37:10,569 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-14 17:37:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure pch_phub_write_serial_rom [2021-12-14 17:37:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_phub_write_serial_rom [2021-12-14 17:37:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:37:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:37:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:37:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2021-12-14 17:37:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2021-12-14 17:37:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure pch_phub_read_serial_rom [2021-12-14 17:37:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_phub_read_serial_rom [2021-12-14 17:37:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_rom [2021-12-14 17:37:10,572 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_rom [2021-12-14 17:37:10,942 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:37:10,943 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:37:12,195 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:37:12,210 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:37:12,210 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:37:12,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:37:12 BoogieIcfgContainer [2021-12-14 17:37:12,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:37:12,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:37:12,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:37:12,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:37:12,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:37:09" (1/3) ... [2021-12-14 17:37:12,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1152b041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:37:12, skipping insertion in model container [2021-12-14 17:37:12,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:37:10" (2/3) ... [2021-12-14 17:37:12,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1152b041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:37:12, skipping insertion in model container [2021-12-14 17:37:12,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:37:12" (3/3) ... [2021-12-14 17:37:12,222 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.i [2021-12-14 17:37:12,228 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:37:12,228 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:37:12,289 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:37:12,295 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 17:37:12,296 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:37:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 606 states, 402 states have (on average 1.271144278606965) internal successors, (511), 412 states have internal predecessors, (511), 174 states have call successors, (174), 28 states have call predecessors, (174), 28 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2021-12-14 17:37:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-14 17:37:12,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:12,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:37:12,328 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:12,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:12,333 INFO L85 PathProgramCache]: Analyzing trace with hash -838784516, now seen corresponding path program 1 times [2021-12-14 17:37:12,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:12,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469224764] [2021-12-14 17:37:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:12,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:12,738 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 17:37:12,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:12,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469224764] [2021-12-14 17:37:12,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469224764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:12,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:12,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:37:12,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660620348] [2021-12-14 17:37:12,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:12,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:37:12,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:12,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:37:12,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:37:12,782 INFO L87 Difference]: Start difference. First operand has 606 states, 402 states have (on average 1.271144278606965) internal successors, (511), 412 states have internal predecessors, (511), 174 states have call successors, (174), 28 states have call predecessors, (174), 28 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 17:37:13,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:13,009 INFO L93 Difference]: Finished difference Result 1792 states and 2597 transitions. [2021-12-14 17:37:13,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:37:13,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 15 [2021-12-14 17:37:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:13,040 INFO L225 Difference]: With dead ends: 1792 [2021-12-14 17:37:13,040 INFO L226 Difference]: Without dead ends: 1185 [2021-12-14 17:37:13,051 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 17:37:13,056 INFO L933 BasicCegarLoop]: 1020 mSDtfsCounter, 823 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:13,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 1857 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:37:13,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2021-12-14 17:37:13,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1181. [2021-12-14 17:37:13,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 783 states have (on average 1.2630906768837804) internal successors, (989), 795 states have internal predecessors, (989), 343 states have call successors, (343), 55 states have call predecessors, (343), 54 states have return successors, (338), 338 states have call predecessors, (338), 338 states have call successors, (338) [2021-12-14 17:37:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1670 transitions. [2021-12-14 17:37:13,247 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1670 transitions. Word has length 15 [2021-12-14 17:37:13,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:13,248 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1670 transitions. [2021-12-14 17:37:13,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 17:37:13,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1670 transitions. [2021-12-14 17:37:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 17:37:13,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:13,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:37:13,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:37:13,255 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:13,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:13,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1677123996, now seen corresponding path program 1 times [2021-12-14 17:37:13,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:13,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408172492] [2021-12-14 17:37:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:13,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:13,362 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 17:37:13,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:13,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408172492] [2021-12-14 17:37:13,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408172492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:13,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:13,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:37:13,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946515477] [2021-12-14 17:37:13,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:13,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:37:13,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:13,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:37:13,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:37:13,367 INFO L87 Difference]: Start difference. First operand 1181 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17:37:13,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:13,425 INFO L93 Difference]: Finished difference Result 1199 states and 1690 transitions. [2021-12-14 17:37:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:37:13,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 18 [2021-12-14 17:37:13,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:13,435 INFO L225 Difference]: With dead ends: 1199 [2021-12-14 17:37:13,435 INFO L226 Difference]: Without dead ends: 1190 [2021-12-14 17:37:13,439 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 17:37:13,441 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 842 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:13,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 866 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:37:13,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2021-12-14 17:37:13,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1181. [2021-12-14 17:37:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 783 states have (on average 1.2618135376756066) internal successors, (988), 795 states have internal predecessors, (988), 343 states have call successors, (343), 55 states have call predecessors, (343), 54 states have return successors, (338), 338 states have call predecessors, (338), 338 states have call successors, (338) [2021-12-14 17:37:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1669 transitions. [2021-12-14 17:37:13,533 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1669 transitions. Word has length 18 [2021-12-14 17:37:13,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:13,534 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1669 transitions. [2021-12-14 17:37:13,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17:37:13,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1669 transitions. [2021-12-14 17:37:13,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 17:37:13,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:13,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:37:13,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:37:13,539 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:13,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1619865694, now seen corresponding path program 1 times [2021-12-14 17:37:13,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:13,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709393442] [2021-12-14 17:37:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:13,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:13,617 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 17:37:13,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:13,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709393442] [2021-12-14 17:37:13,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709393442] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:13,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:13,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:37:13,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130803805] [2021-12-14 17:37:13,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:13,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:37:13,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:13,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:37:13,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:37:13,621 INFO L87 Difference]: Start difference. First operand 1181 states and 1669 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17:37:13,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:13,680 INFO L93 Difference]: Finished difference Result 1183 states and 1670 transitions. [2021-12-14 17:37:13,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:37:13,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 18 [2021-12-14 17:37:13,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:13,687 INFO L225 Difference]: With dead ends: 1183 [2021-12-14 17:37:13,688 INFO L226 Difference]: Without dead ends: 1180 [2021-12-14 17:37:13,689 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 17:37:13,690 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 830 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 844 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 17:37:13,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [830 Valid, 844 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:37:13,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-12-14 17:37:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1180. [2021-12-14 17:37:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 783 states have (on average 1.260536398467433) internal successors, (987), 794 states have internal predecessors, (987), 342 states have call successors, (342), 55 states have call predecessors, (342), 54 states have return successors, (338), 338 states have call predecessors, (338), 338 states have call successors, (338) [2021-12-14 17:37:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1667 transitions. [2021-12-14 17:37:13,756 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1667 transitions. Word has length 18 [2021-12-14 17:37:13,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:13,757 INFO L470 AbstractCegarLoop]: Abstraction has 1180 states and 1667 transitions. [2021-12-14 17:37:13,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17:37:13,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1667 transitions. [2021-12-14 17:37:13,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-14 17:37:13,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:13,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:37:13,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:37:13,759 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:13,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1323407411, now seen corresponding path program 1 times [2021-12-14 17:37:13,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:13,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966333638] [2021-12-14 17:37:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:13,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:13,830 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 17:37:13,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:13,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966333638] [2021-12-14 17:37:13,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966333638] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:13,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:13,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:37:13,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553681680] [2021-12-14 17:37:13,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:13,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:37:13,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:13,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:37:13,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:37:13,837 INFO L87 Difference]: Start difference. First operand 1180 states and 1667 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 17:37:13,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:13,890 INFO L93 Difference]: Finished difference Result 1182 states and 1668 transitions. [2021-12-14 17:37:13,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:37:13,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 19 [2021-12-14 17:37:13,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:13,897 INFO L225 Difference]: With dead ends: 1182 [2021-12-14 17:37:13,897 INFO L226 Difference]: Without dead ends: 1179 [2021-12-14 17:37:13,900 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 17:37:13,907 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 827 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 842 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 17:37:13,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 842 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:37:13,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-12-14 17:37:13,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2021-12-14 17:37:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 783 states have (on average 1.2592592592592593) internal successors, (986), 793 states have internal predecessors, (986), 341 states have call successors, (341), 55 states have call predecessors, (341), 54 states have return successors, (338), 338 states have call predecessors, (338), 338 states have call successors, (338) [2021-12-14 17:37:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1665 transitions. [2021-12-14 17:37:13,964 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1665 transitions. Word has length 19 [2021-12-14 17:37:13,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:13,964 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1665 transitions. [2021-12-14 17:37:13,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 17:37:13,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1665 transitions. [2021-12-14 17:37:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-14 17:37:13,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:13,966 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 17:37:13,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:37:13,966 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:13,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:13,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1924401979, now seen corresponding path program 1 times [2021-12-14 17:37:13,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:13,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18015553] [2021-12-14 17:37:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:13,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:14,018 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 17:37:14,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:14,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18015553] [2021-12-14 17:37:14,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18015553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:14,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:14,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:37:14,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309471560] [2021-12-14 17:37:14,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:14,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:37:14,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:14,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:37:14,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:37:14,021 INFO L87 Difference]: Start difference. First operand 1179 states and 1665 transitions. 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 17:37:14,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:14,131 INFO L93 Difference]: Finished difference Result 3497 states and 4957 transitions. [2021-12-14 17:37:14,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:37:14,131 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 17:37:14,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:14,174 INFO L225 Difference]: With dead ends: 3497 [2021-12-14 17:37:14,174 INFO L226 Difference]: Without dead ends: 2315 [2021-12-14 17:37:14,180 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 17:37:14,182 INFO L933 BasicCegarLoop]: 1074 mSDtfsCounter, 821 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:14,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [821 Valid, 1888 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:37:14,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2021-12-14 17:37:14,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2300. [2021-12-14 17:37:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 1528 states have (on average 1.2604712041884816) internal successors, (1926), 1553 states have internal predecessors, (1926), 667 states have call successors, (667), 106 states have call predecessors, (667), 104 states have return successors, (668), 656 states have call predecessors, (668), 660 states have call successors, (668) [2021-12-14 17:37:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3261 transitions. [2021-12-14 17:37:14,311 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3261 transitions. Word has length 20 [2021-12-14 17:37:14,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:14,311 INFO L470 AbstractCegarLoop]: Abstraction has 2300 states and 3261 transitions. [2021-12-14 17:37:14,312 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 17:37:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3261 transitions. [2021-12-14 17:37:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-14 17:37:14,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:14,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:37:14,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:37:14,316 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:14,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:14,317 INFO L85 PathProgramCache]: Analyzing trace with hash 389432597, now seen corresponding path program 1 times [2021-12-14 17:37:14,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:14,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339479406] [2021-12-14 17:37:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:14,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:14,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:37:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:14,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:14,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:37:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:14,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 17:37:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:14,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 17:37:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:14,408 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 17:37:14,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:14,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339479406] [2021-12-14 17:37:14,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339479406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:14,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:14,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:37:14,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883073924] [2021-12-14 17:37:14,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:14,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:37:14,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:14,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:37:14,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:37:14,410 INFO L87 Difference]: Start difference. First operand 2300 states and 3261 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 17:37:16,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:16,230 INFO L93 Difference]: Finished difference Result 6694 states and 9531 transitions. [2021-12-14 17:37:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:37:16,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2021-12-14 17:37:16,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:16,261 INFO L225 Difference]: With dead ends: 6694 [2021-12-14 17:37:16,261 INFO L226 Difference]: Without dead ends: 4397 [2021-12-14 17:37:16,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:37:16,276 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 844 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:16,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 2523 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 17:37:16,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2021-12-14 17:37:16,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 4228. [2021-12-14 17:37:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4228 states, 2788 states have (on average 1.2503586800573887) internal successors, (3486), 2829 states have internal predecessors, (3486), 1243 states have call successors, (1243), 198 states have call predecessors, (1243), 196 states have return successors, (1244), 1232 states have call predecessors, (1244), 1236 states have call successors, (1244) [2021-12-14 17:37:16,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4228 states to 4228 states and 5973 transitions. [2021-12-14 17:37:16,557 INFO L78 Accepts]: Start accepts. Automaton has 4228 states and 5973 transitions. Word has length 49 [2021-12-14 17:37:16,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:16,557 INFO L470 AbstractCegarLoop]: Abstraction has 4228 states and 5973 transitions. [2021-12-14 17:37:16,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 17:37:16,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4228 states and 5973 transitions. [2021-12-14 17:37:16,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-14 17:37:16,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:16,565 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, 1, 1, 1] [2021-12-14 17:37:16,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:37:16,566 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:16,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:16,566 INFO L85 PathProgramCache]: Analyzing trace with hash 222631348, now seen corresponding path program 1 times [2021-12-14 17:37:16,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:16,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103531156] [2021-12-14 17:37:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:16,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:16,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:37:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:16,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:16,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:37:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:16,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:37:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:16,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:37:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:37:16,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:16,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103531156] [2021-12-14 17:37:16,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103531156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:16,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:16,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:37:16,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163940864] [2021-12-14 17:37:16,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:16,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:37:16,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:16,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:37:16,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:37:16,702 INFO L87 Difference]: Start difference. First operand 4228 states and 5973 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 17:37:18,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:18,164 INFO L93 Difference]: Finished difference Result 10670 states and 15167 transitions. [2021-12-14 17:37:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:37:18,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2021-12-14 17:37:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:18,206 INFO L225 Difference]: With dead ends: 10670 [2021-12-14 17:37:18,207 INFO L226 Difference]: Without dead ends: 6445 [2021-12-14 17:37:18,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:37:18,228 INFO L933 BasicCegarLoop]: 1486 mSDtfsCounter, 726 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:18,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 3630 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 17:37:18,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6445 states. [2021-12-14 17:37:18,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6445 to 6196. [2021-12-14 17:37:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 4088 states have (on average 1.2490215264187867) internal successors, (5106), 4145 states have internal predecessors, (5106), 1819 states have call successors, (1819), 290 states have call predecessors, (1819), 288 states have return successors, (1820), 1808 states have call predecessors, (1820), 1812 states have call successors, (1820) [2021-12-14 17:37:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 8745 transitions. [2021-12-14 17:37:18,629 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 8745 transitions. Word has length 60 [2021-12-14 17:37:18,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:18,630 INFO L470 AbstractCegarLoop]: Abstraction has 6196 states and 8745 transitions. [2021-12-14 17:37:18,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 17:37:18,634 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 8745 transitions. [2021-12-14 17:37:18,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-14 17:37:18,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:18,640 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-14 17:37:18,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:37:18,641 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:18,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:18,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1653090658, now seen corresponding path program 1 times [2021-12-14 17:37:18,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:18,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511657300] [2021-12-14 17:37:18,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:18,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:37:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:18,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:18,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:37:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:18,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:37:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:18,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:37:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-14 17:37:18,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:18,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511657300] [2021-12-14 17:37:18,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511657300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:18,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:18,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:37:18,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13267845] [2021-12-14 17:37:18,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:18,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:37:18,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:18,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:37:18,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:37:18,776 INFO L87 Difference]: Start difference. First operand 6196 states and 8745 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-14 17:37:20,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:20,430 INFO L93 Difference]: Finished difference Result 17321 states and 25243 transitions. [2021-12-14 17:37:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:37:20,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 72 [2021-12-14 17:37:20,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:20,494 INFO L225 Difference]: With dead ends: 17321 [2021-12-14 17:37:20,495 INFO L226 Difference]: Without dead ends: 11128 [2021-12-14 17:37:20,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:37:20,527 INFO L933 BasicCegarLoop]: 1245 mSDtfsCounter, 1260 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 865 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 3480 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 865 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:20,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1412 Valid, 3480 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [865 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 17:37:20,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11128 states. [2021-12-14 17:37:20,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11128 to 6196. [2021-12-14 17:37:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 4088 states have (on average 1.2480430528375734) internal successors, (5102), 4145 states have internal predecessors, (5102), 1819 states have call successors, (1819), 290 states have call predecessors, (1819), 288 states have return successors, (1820), 1808 states have call predecessors, (1820), 1812 states have call successors, (1820) [2021-12-14 17:37:21,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 8741 transitions. [2021-12-14 17:37:21,022 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 8741 transitions. Word has length 72 [2021-12-14 17:37:21,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:21,022 INFO L470 AbstractCegarLoop]: Abstraction has 6196 states and 8741 transitions. [2021-12-14 17:37:21,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-14 17:37:21,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 8741 transitions. [2021-12-14 17:37:21,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 17:37:21,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:21,029 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-14 17:37:21,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 17:37:21,029 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:21,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:21,030 INFO L85 PathProgramCache]: Analyzing trace with hash 18352340, now seen corresponding path program 1 times [2021-12-14 17:37:21,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:21,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205013205] [2021-12-14 17:37:21,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:21,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:37:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:21,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:21,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:37:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:37:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:21,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:37:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:21,170 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-14 17:37:21,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:21,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205013205] [2021-12-14 17:37:21,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205013205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:21,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:21,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:37:21,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517729633] [2021-12-14 17:37:21,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:21,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:37:21,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:21,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:37:21,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:37:21,173 INFO L87 Difference]: Start difference. First operand 6196 states and 8741 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 17:37:22,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:22,922 INFO L93 Difference]: Finished difference Result 12631 states and 17904 transitions. [2021-12-14 17:37:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:37:22,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2021-12-14 17:37:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:22,944 INFO L225 Difference]: With dead ends: 12631 [2021-12-14 17:37:22,945 INFO L226 Difference]: Without dead ends: 6438 [2021-12-14 17:37:22,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 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 17:37:22,967 INFO L933 BasicCegarLoop]: 1395 mSDtfsCounter, 838 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:22,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 3442 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 17:37:22,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6438 states. [2021-12-14 17:37:23,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6438 to 6183. [2021-12-14 17:37:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6183 states, 4080 states have (on average 1.2475490196078431) internal successors, (5090), 4138 states have internal predecessors, (5090), 1815 states have call successors, (1815), 288 states have call predecessors, (1815), 287 states have return successors, (1810), 1804 states have call predecessors, (1810), 1806 states have call successors, (1810) [2021-12-14 17:37:23,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6183 states to 6183 states and 8715 transitions. [2021-12-14 17:37:23,280 INFO L78 Accepts]: Start accepts. Automaton has 6183 states and 8715 transitions. Word has length 73 [2021-12-14 17:37:23,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:23,280 INFO L470 AbstractCegarLoop]: Abstraction has 6183 states and 8715 transitions. [2021-12-14 17:37:23,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 17:37:23,281 INFO L276 IsEmpty]: Start isEmpty. Operand 6183 states and 8715 transitions. [2021-12-14 17:37:23,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 17:37:23,286 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:23,287 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-14 17:37:23,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 17:37:23,287 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:23,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:23,288 INFO L85 PathProgramCache]: Analyzing trace with hash -826119531, now seen corresponding path program 1 times [2021-12-14 17:37:23,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:23,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801768747] [2021-12-14 17:37:23,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:23,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:37:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:23,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:37:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:37:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:23,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:37:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-14 17:37:23,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:23,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801768747] [2021-12-14 17:37:23,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801768747] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:23,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:23,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:37:23,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523783951] [2021-12-14 17:37:23,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:23,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:37:23,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:23,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:37:23,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:37:23,428 INFO L87 Difference]: Start difference. First operand 6183 states and 8715 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 17:37:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:25,130 INFO L93 Difference]: Finished difference Result 11211 states and 16571 transitions. [2021-12-14 17:37:25,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:37:25,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2021-12-14 17:37:25,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:25,174 INFO L225 Difference]: With dead ends: 11211 [2021-12-14 17:37:25,175 INFO L226 Difference]: Without dead ends: 11087 [2021-12-14 17:37:25,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:37:25,184 INFO L933 BasicCegarLoop]: 1454 mSDtfsCounter, 945 mSDsluCounter, 5951 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 7405 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:25,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [951 Valid, 7405 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [714 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 17:37:25,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11087 states. [2021-12-14 17:37:25,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11087 to 6150. [2021-12-14 17:37:25,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6150 states, 4057 states have (on average 1.2459945772738477) internal successors, (5055), 4111 states have internal predecessors, (5055), 1805 states have call successors, (1805), 288 states have call predecessors, (1805), 287 states have return successors, (1802), 1798 states have call predecessors, (1802), 1798 states have call successors, (1802) [2021-12-14 17:37:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6150 states to 6150 states and 8662 transitions. [2021-12-14 17:37:25,683 INFO L78 Accepts]: Start accepts. Automaton has 6150 states and 8662 transitions. Word has length 73 [2021-12-14 17:37:25,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:25,683 INFO L470 AbstractCegarLoop]: Abstraction has 6150 states and 8662 transitions. [2021-12-14 17:37:25,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 17:37:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 6150 states and 8662 transitions. [2021-12-14 17:37:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-14 17:37:25,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:25,690 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-14 17:37:25,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 17:37:25,691 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:25,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:25,691 INFO L85 PathProgramCache]: Analyzing trace with hash -672097803, now seen corresponding path program 1 times [2021-12-14 17:37:25,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:25,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711575787] [2021-12-14 17:37:25,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:25,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:25,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-14 17:37:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:25,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:37:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:25,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:37:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:25,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 17:37:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:25,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 17:37:25,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:25,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711575787] [2021-12-14 17:37:25,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711575787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:25,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:25,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:37:25,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333304737] [2021-12-14 17:37:25,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:25,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:37:25,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:25,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:37:25,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:37:25,840 INFO L87 Difference]: Start difference. First operand 6150 states and 8662 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:37:27,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:27,556 INFO L93 Difference]: Finished difference Result 11076 states and 16372 transitions. [2021-12-14 17:37:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:37:27,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 79 [2021-12-14 17:37:27,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:27,600 INFO L225 Difference]: With dead ends: 11076 [2021-12-14 17:37:27,601 INFO L226 Difference]: Without dead ends: 10980 [2021-12-14 17:37:27,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:37:27,610 INFO L933 BasicCegarLoop]: 1444 mSDtfsCounter, 937 mSDsluCounter, 5919 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 7363 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:27,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 7363 Invalid, 1883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 17:37:27,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10980 states. [2021-12-14 17:37:28,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10980 to 6102. [2021-12-14 17:37:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6102 states, 4026 states have (on average 1.2449080973671138) internal successors, (5012), 4076 states have internal predecessors, (5012), 1788 states have call successors, (1788), 287 states have call predecessors, (1788), 287 states have return successors, (1788), 1786 states have call predecessors, (1788), 1784 states have call successors, (1788) [2021-12-14 17:37:28,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 8588 transitions. [2021-12-14 17:37:28,091 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 8588 transitions. Word has length 79 [2021-12-14 17:37:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:28,091 INFO L470 AbstractCegarLoop]: Abstraction has 6102 states and 8588 transitions. [2021-12-14 17:37:28,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:37:28,091 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 8588 transitions. [2021-12-14 17:37:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-14 17:37:28,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:28,098 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-12-14 17:37:28,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 17:37:28,098 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:28,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:28,099 INFO L85 PathProgramCache]: Analyzing trace with hash -265053531, now seen corresponding path program 1 times [2021-12-14 17:37:28,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:28,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017731315] [2021-12-14 17:37:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:28,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:37:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:28,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:28,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:37:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:28,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:37:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-14 17:37:28,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:28,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017731315] [2021-12-14 17:37:28,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017731315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:28,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:28,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:37:28,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876132284] [2021-12-14 17:37:28,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:28,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:37:28,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:28,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:37:28,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:37:28,221 INFO L87 Difference]: Start difference. First operand 6102 states and 8588 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-14 17:37:30,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:30,351 INFO L93 Difference]: Finished difference Result 18611 states and 27716 transitions. [2021-12-14 17:37:30,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:37:30,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2021-12-14 17:37:30,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:30,426 INFO L225 Difference]: With dead ends: 18611 [2021-12-14 17:37:30,427 INFO L226 Difference]: Without dead ends: 15645 [2021-12-14 17:37:30,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:37:30,532 INFO L933 BasicCegarLoop]: 1590 mSDtfsCounter, 1362 mSDsluCounter, 6691 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 8281 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:30,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 8281 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [751 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 17:37:30,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15645 states. [2021-12-14 17:37:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15645 to 6100. [2021-12-14 17:37:31,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6100 states, 4024 states have (on average 1.2445328031809144) internal successors, (5008), 4074 states have internal predecessors, (5008), 1788 states have call successors, (1788), 287 states have call predecessors, (1788), 287 states have return successors, (1788), 1786 states have call predecessors, (1788), 1784 states have call successors, (1788) [2021-12-14 17:37:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6100 states to 6100 states and 8584 transitions. [2021-12-14 17:37:31,086 INFO L78 Accepts]: Start accepts. Automaton has 6100 states and 8584 transitions. Word has length 75 [2021-12-14 17:37:31,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:31,087 INFO L470 AbstractCegarLoop]: Abstraction has 6100 states and 8584 transitions. [2021-12-14 17:37:31,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-14 17:37:31,087 INFO L276 IsEmpty]: Start isEmpty. Operand 6100 states and 8584 transitions. [2021-12-14 17:37:31,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-14 17:37:31,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:31,093 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-12-14 17:37:31,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 17:37:31,094 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:31,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1225886074, now seen corresponding path program 1 times [2021-12-14 17:37:31,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:31,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455741875] [2021-12-14 17:37:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:31,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:31,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-14 17:37:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:31,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:37:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:31,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:37:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-14 17:37:31,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:31,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455741875] [2021-12-14 17:37:31,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455741875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:31,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:31,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:37:31,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35615573] [2021-12-14 17:37:31,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:31,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:37:31,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:31,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:37:31,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:37:31,233 INFO L87 Difference]: Start difference. First operand 6100 states and 8584 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-14 17:37:32,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:32,774 INFO L93 Difference]: Finished difference Result 8675 states and 12570 transitions. [2021-12-14 17:37:32,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:37:32,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 77 [2021-12-14 17:37:32,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:32,776 INFO L225 Difference]: With dead ends: 8675 [2021-12-14 17:37:32,776 INFO L226 Difference]: Without dead ends: 0 [2021-12-14 17:37:32,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:37:32,802 INFO L933 BasicCegarLoop]: 1459 mSDtfsCounter, 964 mSDsluCounter, 5905 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 7364 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:32,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 7364 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 17:37:32,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-14 17:37:32,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-14 17:37:32,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:37:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-14 17:37:32,805 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2021-12-14 17:37:32,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:32,805 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 17:37:32,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-14 17:37:32,805 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-14 17:37:32,806 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-14 17:37:32,808 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 17:37:32,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 17:37:32,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.