./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 ae007674 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-dev-ae00767 [2021-12-28 03:49:32,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:49:32,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:49:32,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:49:32,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:49:32,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:49:32,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:49:32,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:49:32,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:49:32,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:49:32,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:49:32,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:49:32,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:49:32,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:49:32,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:49:32,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:49:32,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:49:32,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:49:32,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:49:32,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:49:32,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:49:32,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:49:32,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:49:32,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:49:32,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:49:32,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:49:32,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:49:32,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:49:32,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:49:32,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:49:32,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:49:32,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:49:32,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:49:32,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:49:32,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:49:32,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:49:32,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:49:32,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:49:32,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:49:32,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:49:32,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:49:32,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:49:32,769 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:49:32,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:49:32,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:49:32,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:49:32,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:49:32,771 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:49:32,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:49:32,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:49:32,773 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:49:32,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:49:32,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:49:32,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:49:32,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:49:32,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:49:32,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:49:32,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:49:32,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:49:32,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:49:32,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:49:32,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:49:32,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:49:32,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:49:32,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:49:32,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:49:32,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:49:32,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:49:32,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:49:32,784 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:49:32,784 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:49:32,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:49:32,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5b351dc48b78577594847e2589a2433da4c3422ed74f69290b3f52d3ba2c2d2 [2021-12-28 03:49:33,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:49:33,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:49:33,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:49:33,063 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:49:33,063 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:49:33,065 INFO L432 ainManager$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 [2021-12-28 03:49:33,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58ff59be/94b8b72ba2e4443bbb542d46b507b805/FLAG3c7ba894b [2021-12-28 03:49:33,673 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:49:33,674 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 [2021-12-28 03:49:33,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58ff59be/94b8b72ba2e4443bbb542d46b507b805/FLAG3c7ba894b [2021-12-28 03:49:34,098 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58ff59be/94b8b72ba2e4443bbb542d46b507b805 [2021-12-28 03:49:34,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:49:34,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:49:34,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:49:34,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:49:34,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:49:34,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:49:34" (1/1) ... [2021-12-28 03:49:34,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42584b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:34, skipping insertion in model container [2021-12-28 03:49:34,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:49:34" (1/1) ... [2021-12-28 03:49:34,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:49:34,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:49:34,835 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] [2021-12-28 03:49:34,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:49:34,896 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:49:35,058 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] [2021-12-28 03:49:35,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:49:35,117 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:49:35,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:35 WrapperNode [2021-12-28 03:49:35,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:49:35,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:49:35,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:49:35,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:49:35,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:35" (1/1) ... [2021-12-28 03:49:35,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:35" (1/1) ... [2021-12-28 03:49:35,246 INFO L137 Inliner]: procedures = 128, calls = 740, calls flagged for inlining = 53, calls inlined = 47, statements flattened = 2000 [2021-12-28 03:49:35,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:49:35,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:49:35,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:49:35,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:49:35,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:35" (1/1) ... [2021-12-28 03:49:35,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:35" (1/1) ... [2021-12-28 03:49:35,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:35" (1/1) ... [2021-12-28 03:49:35,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:35" (1/1) ... [2021-12-28 03:49:35,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:35" (1/1) ... [2021-12-28 03:49:35,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:35" (1/1) ... [2021-12-28 03:49:35,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:35" (1/1) ... [2021-12-28 03:49:35,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:49:35,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:49:35,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:49:35,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:49:35,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:35" (1/1) ... [2021-12-28 03:49:35,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:49:35,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:49:35,448 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) [2021-12-28 03:49:35,450 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 [2021-12-28 03:49:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-28 03:49:35,485 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-28 03:49:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure pch_phub_remove [2021-12-28 03:49:35,485 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_phub_remove [2021-12-28 03:49:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-28 03:49:35,485 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-28 03:49:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:49:35,486 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_bin_file [2021-12-28 03:49:35,486 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_bin_file [2021-12-28 03:49:35,486 INFO L130 BoogieDeclarations]: Found specification of procedure pch_phub_read_modify_write_reg [2021-12-28 03:49:35,486 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_phub_read_modify_write_reg [2021-12-28 03:49:35,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pch_phub_mutex [2021-12-28 03:49:35,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pch_phub_mutex [2021-12-28 03:49:35,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:49:35,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:49:35,487 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:49:35,487 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:49:35,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:49:35,487 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:49:35,487 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:49:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-28 03:49:35,488 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-28 03:49:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:49:35,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:49:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:49:35,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:49:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-28 03:49:35,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-28 03:49:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:49:35,489 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_file [2021-12-28 03:49:35,489 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_file [2021-12-28 03:49:35,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:49:35,489 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-12-28 03:49:35,489 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-12-28 03:49:35,489 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_rom [2021-12-28 03:49:35,489 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_rom [2021-12-28 03:49:35,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:49:35,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:49:35,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:49:35,490 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-28 03:49:35,490 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-28 03:49:35,490 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-28 03:49:35,491 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-28 03:49:35,491 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-12-28 03:49:35,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-12-28 03:49:35,491 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-12-28 03:49:35,491 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-12-28 03:49:35,491 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-28 03:49:35,491 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-28 03:49:35,492 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-12-28 03:49:35,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:49:35,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_pch_phub_mutex [2021-12-28 03:49:35,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_pch_phub_mutex [2021-12-28 03:49:35,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:49:35,492 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-28 03:49:35,493 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-28 03:49:35,493 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-28 03:49:35,493 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-28 03:49:35,494 INFO L130 BoogieDeclarations]: Found specification of procedure pch_phub_write_serial_rom [2021-12-28 03:49:35,494 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_phub_write_serial_rom [2021-12-28 03:49:35,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:49:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:49:35,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:49:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2021-12-28 03:49:35,495 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2021-12-28 03:49:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure pch_phub_read_serial_rom [2021-12-28 03:49:35,495 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_phub_read_serial_rom [2021-12-28 03:49:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_rom [2021-12-28 03:49:35,495 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_rom [2021-12-28 03:49:35,880 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:49:35,882 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:49:36,871 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:49:36,879 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:49:36,879 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:49:36,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:49:36 BoogieIcfgContainer [2021-12-28 03:49:36,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:49:36,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:49:36,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:49:36,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:49:36,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:49:34" (1/3) ... [2021-12-28 03:49:36,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6292ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:49:36, skipping insertion in model container [2021-12-28 03:49:36,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:35" (2/3) ... [2021-12-28 03:49:36,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6292ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:49:36, skipping insertion in model container [2021-12-28 03:49:36,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:49:36" (3/3) ... [2021-12-28 03:49:36,886 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--misc--pch_phub.ko-main.cil.out.i [2021-12-28 03:49:36,890 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:49:36,890 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:49:36,921 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:49:36,926 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 [2021-12-28 03:49:36,926 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:49:36,945 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) [2021-12-28 03:49:36,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-28 03:49:36,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:36,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:49:36,951 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:36,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:36,954 INFO L85 PathProgramCache]: Analyzing trace with hash -838784516, now seen corresponding path program 1 times [2021-12-28 03:49:36,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:36,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250276149] [2021-12-28 03:49:36,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:36,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:37,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:37,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250276149] [2021-12-28 03:49:37,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250276149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:37,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:37,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:49:37,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920647661] [2021-12-28 03:49:37,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:37,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:49:37,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:49:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:49:37,255 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) [2021-12-28 03:49:37,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:37,424 INFO L93 Difference]: Finished difference Result 1792 states and 2597 transitions. [2021-12-28 03:49:37,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:49:37,426 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 [2021-12-28 03:49:37,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:37,442 INFO L225 Difference]: With dead ends: 1792 [2021-12-28 03:49:37,442 INFO L226 Difference]: Without dead ends: 1185 [2021-12-28 03:49:37,451 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 [2021-12-28 03:49:37,453 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 [2021-12-28 03:49:37,454 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] [2021-12-28 03:49:37,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2021-12-28 03:49:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1181. [2021-12-28 03:49:37,553 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) [2021-12-28 03:49:37,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1670 transitions. [2021-12-28 03:49:37,569 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1670 transitions. Word has length 15 [2021-12-28 03:49:37,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:37,569 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1670 transitions. [2021-12-28 03:49:37,569 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) [2021-12-28 03:49:37,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1670 transitions. [2021-12-28 03:49:37,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 03:49:37,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:37,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:49:37,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:49:37,575 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:37,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:37,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1677123996, now seen corresponding path program 1 times [2021-12-28 03:49:37,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:37,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342344961] [2021-12-28 03:49:37,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:37,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:37,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:37,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342344961] [2021-12-28 03:49:37,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342344961] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:37,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:37,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:49:37,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920038591] [2021-12-28 03:49:37,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:37,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:49:37,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:37,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:49:37,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:49:37,669 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) [2021-12-28 03:49:37,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:37,730 INFO L93 Difference]: Finished difference Result 1199 states and 1690 transitions. [2021-12-28 03:49:37,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:49:37,731 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 [2021-12-28 03:49:37,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:37,758 INFO L225 Difference]: With dead ends: 1199 [2021-12-28 03:49:37,758 INFO L226 Difference]: Without dead ends: 1190 [2021-12-28 03:49:37,761 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 [2021-12-28 03:49:37,763 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 [2021-12-28 03:49:37,764 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] [2021-12-28 03:49:37,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2021-12-28 03:49:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1181. [2021-12-28 03:49:37,822 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) [2021-12-28 03:49:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1669 transitions. [2021-12-28 03:49:37,833 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1669 transitions. Word has length 18 [2021-12-28 03:49:37,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:37,834 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1669 transitions. [2021-12-28 03:49:37,834 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) [2021-12-28 03:49:37,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1669 transitions. [2021-12-28 03:49:37,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 03:49:37,837 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:37,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:49:37,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:49:37,838 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:37,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1619865694, now seen corresponding path program 1 times [2021-12-28 03:49:37,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:37,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094523795] [2021-12-28 03:49:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:37,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:37,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:37,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094523795] [2021-12-28 03:49:37,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094523795] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:37,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:37,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:49:37,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116251059] [2021-12-28 03:49:37,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:37,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:49:37,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:37,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:49:37,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:49:37,904 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) [2021-12-28 03:49:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:37,944 INFO L93 Difference]: Finished difference Result 1183 states and 1670 transitions. [2021-12-28 03:49:37,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:49:37,945 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 [2021-12-28 03:49:37,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:37,950 INFO L225 Difference]: With dead ends: 1183 [2021-12-28 03:49:37,950 INFO L226 Difference]: Without dead ends: 1180 [2021-12-28 03:49:37,951 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 [2021-12-28 03:49:37,952 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 [2021-12-28 03:49:37,952 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] [2021-12-28 03:49:37,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-12-28 03:49:37,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1180. [2021-12-28 03:49:37,990 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) [2021-12-28 03:49:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1667 transitions. [2021-12-28 03:49:37,997 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1667 transitions. Word has length 18 [2021-12-28 03:49:37,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:37,997 INFO L470 AbstractCegarLoop]: Abstraction has 1180 states and 1667 transitions. [2021-12-28 03:49:37,997 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) [2021-12-28 03:49:37,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1667 transitions. [2021-12-28 03:49:37,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-28 03:49:37,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:37,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:49:37,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:49:37,999 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:37,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:37,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1323407411, now seen corresponding path program 1 times [2021-12-28 03:49:37,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:37,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420535784] [2021-12-28 03:49:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:38,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:38,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:38,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420535784] [2021-12-28 03:49:38,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420535784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:38,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:38,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:49:38,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015711211] [2021-12-28 03:49:38,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:38,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:49:38,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:38,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:49:38,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:49:38,045 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) [2021-12-28 03:49:38,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:38,091 INFO L93 Difference]: Finished difference Result 1182 states and 1668 transitions. [2021-12-28 03:49:38,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:49:38,093 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 [2021-12-28 03:49:38,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:38,097 INFO L225 Difference]: With dead ends: 1182 [2021-12-28 03:49:38,097 INFO L226 Difference]: Without dead ends: 1179 [2021-12-28 03:49:38,098 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 [2021-12-28 03:49:38,099 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 [2021-12-28 03:49:38,099 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] [2021-12-28 03:49:38,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-12-28 03:49:38,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2021-12-28 03:49:38,140 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) [2021-12-28 03:49:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1665 transitions. [2021-12-28 03:49:38,146 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1665 transitions. Word has length 19 [2021-12-28 03:49:38,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:38,146 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1665 transitions. [2021-12-28 03:49:38,146 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) [2021-12-28 03:49:38,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1665 transitions. [2021-12-28 03:49:38,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-28 03:49:38,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:38,148 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] [2021-12-28 03:49:38,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:49:38,149 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:38,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:38,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1924401979, now seen corresponding path program 1 times [2021-12-28 03:49:38,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:38,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36912199] [2021-12-28 03:49:38,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:38,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:38,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:38,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36912199] [2021-12-28 03:49:38,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36912199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:38,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:38,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:49:38,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327645296] [2021-12-28 03:49:38,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:38,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:49:38,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:38,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:49:38,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:49:38,209 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) [2021-12-28 03:49:38,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:38,306 INFO L93 Difference]: Finished difference Result 3497 states and 4957 transitions. [2021-12-28 03:49:38,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:49:38,306 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 [2021-12-28 03:49:38,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:38,319 INFO L225 Difference]: With dead ends: 3497 [2021-12-28 03:49:38,319 INFO L226 Difference]: Without dead ends: 2315 [2021-12-28 03:49:38,326 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 [2021-12-28 03:49:38,328 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 [2021-12-28 03:49:38,328 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] [2021-12-28 03:49:38,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2021-12-28 03:49:38,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2300. [2021-12-28 03:49:38,438 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) [2021-12-28 03:49:38,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3261 transitions. [2021-12-28 03:49:38,454 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3261 transitions. Word has length 20 [2021-12-28 03:49:38,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:38,454 INFO L470 AbstractCegarLoop]: Abstraction has 2300 states and 3261 transitions. [2021-12-28 03:49:38,454 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) [2021-12-28 03:49:38,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3261 transitions. [2021-12-28 03:49:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-28 03:49:38,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:38,457 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] [2021-12-28 03:49:38,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:49:38,457 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:38,457 INFO L85 PathProgramCache]: Analyzing trace with hash 389432597, now seen corresponding path program 1 times [2021-12-28 03:49:38,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:38,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879683424] [2021-12-28 03:49:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:38,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:38,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:49:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:38,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:38,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:49:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:38,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 03:49:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:38,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 03:49:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:38,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:38,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879683424] [2021-12-28 03:49:38,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879683424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:38,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:38,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:49:38,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269530246] [2021-12-28 03:49:38,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:38,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:49:38,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:38,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:49:38,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:49:38,530 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) [2021-12-28 03:49:39,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:39,904 INFO L93 Difference]: Finished difference Result 6694 states and 9531 transitions. [2021-12-28 03:49:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:49:39,905 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 [2021-12-28 03:49:39,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:39,927 INFO L225 Difference]: With dead ends: 6694 [2021-12-28 03:49:39,927 INFO L226 Difference]: Without dead ends: 4397 [2021-12-28 03:49:39,938 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 [2021-12-28 03:49:39,939 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 844 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:39,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 2338 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 03:49:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2021-12-28 03:49:40,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 4228. [2021-12-28 03:49:40,136 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) [2021-12-28 03:49:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4228 states to 4228 states and 5973 transitions. [2021-12-28 03:49:40,163 INFO L78 Accepts]: Start accepts. Automaton has 4228 states and 5973 transitions. Word has length 49 [2021-12-28 03:49:40,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:40,163 INFO L470 AbstractCegarLoop]: Abstraction has 4228 states and 5973 transitions. [2021-12-28 03:49:40,163 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) [2021-12-28 03:49:40,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4228 states and 5973 transitions. [2021-12-28 03:49:40,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-28 03:49:40,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:40,167 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] [2021-12-28 03:49:40,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:49:40,168 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:40,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash 222631348, now seen corresponding path program 1 times [2021-12-28 03:49:40,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:40,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142630006] [2021-12-28 03:49:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:40,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:40,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:49:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:40,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:40,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 03:49:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:40,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:49:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:40,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:49:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:40,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:40,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142630006] [2021-12-28 03:49:40,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142630006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:40,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:40,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:49:40,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87482015] [2021-12-28 03:49:40,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:40,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:49:40,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:40,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:49:40,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:49:40,250 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) [2021-12-28 03:49:41,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:41,590 INFO L93 Difference]: Finished difference Result 10670 states and 15167 transitions. [2021-12-28 03:49:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:49:41,591 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 [2021-12-28 03:49:41,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:41,626 INFO L225 Difference]: With dead ends: 10670 [2021-12-28 03:49:41,626 INFO L226 Difference]: Without dead ends: 6445 [2021-12-28 03:49:41,647 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 [2021-12-28 03:49:41,648 INFO L933 BasicCegarLoop]: 1486 mSDtfsCounter, 726 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:41,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 3445 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 03:49:41,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6445 states. [2021-12-28 03:49:41,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6445 to 6196. [2021-12-28 03:49:41,902 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) [2021-12-28 03:49:41,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 8745 transitions. [2021-12-28 03:49:41,931 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 8745 transitions. Word has length 60 [2021-12-28 03:49:41,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:41,932 INFO L470 AbstractCegarLoop]: Abstraction has 6196 states and 8745 transitions. [2021-12-28 03:49:41,933 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) [2021-12-28 03:49:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 8745 transitions. [2021-12-28 03:49:41,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-28 03:49:41,938 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:41,938 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] [2021-12-28 03:49:41,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:49:41,939 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1653090658, now seen corresponding path program 1 times [2021-12-28 03:49:41,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:41,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488360992] [2021-12-28 03:49:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:41,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:42,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:49:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:42,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:42,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:49:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:42,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:49:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:42,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:49:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-28 03:49:42,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:42,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488360992] [2021-12-28 03:49:42,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488360992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:42,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:42,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:49:42,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361902235] [2021-12-28 03:49:42,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:42,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:49:42,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:42,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:49:42,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:49:42,088 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) [2021-12-28 03:49:43,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:43,742 INFO L93 Difference]: Finished difference Result 17321 states and 25243 transitions. [2021-12-28 03:49:43,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:49:43,743 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 [2021-12-28 03:49:43,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:43,838 INFO L225 Difference]: With dead ends: 17321 [2021-12-28 03:49:43,838 INFO L226 Difference]: Without dead ends: 11128 [2021-12-28 03:49:43,867 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 [2021-12-28 03:49:43,868 INFO L933 BasicCegarLoop]: 1245 mSDtfsCounter, 1260 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 863 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 863 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:43,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1412 Valid, 3313 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [863 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 03:49:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11128 states. [2021-12-28 03:49:44,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11128 to 6196. [2021-12-28 03:49:44,282 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) [2021-12-28 03:49:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 8741 transitions. [2021-12-28 03:49:44,308 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 8741 transitions. Word has length 72 [2021-12-28 03:49:44,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:44,309 INFO L470 AbstractCegarLoop]: Abstraction has 6196 states and 8741 transitions. [2021-12-28 03:49:44,309 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) [2021-12-28 03:49:44,309 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 8741 transitions. [2021-12-28 03:49:44,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-28 03:49:44,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:44,314 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] [2021-12-28 03:49:44,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:49:44,314 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:44,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:44,315 INFO L85 PathProgramCache]: Analyzing trace with hash 18352340, now seen corresponding path program 1 times [2021-12-28 03:49:44,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:44,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206920618] [2021-12-28 03:49:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:44,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:49:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:44,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:44,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:49:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:49:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:44,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:49:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-28 03:49:44,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:44,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206920618] [2021-12-28 03:49:44,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206920618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:44,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:44,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:49:44,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725440303] [2021-12-28 03:49:44,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:44,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:49:44,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:44,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:49:44,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:49:44,404 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) [2021-12-28 03:49:45,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:45,773 INFO L93 Difference]: Finished difference Result 12631 states and 17904 transitions. [2021-12-28 03:49:45,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:49:45,774 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 [2021-12-28 03:49:45,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:45,798 INFO L225 Difference]: With dead ends: 12631 [2021-12-28 03:49:45,799 INFO L226 Difference]: Without dead ends: 6438 [2021-12-28 03:49:45,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:49:45,821 INFO L933 BasicCegarLoop]: 1395 mSDtfsCounter, 838 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 3431 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:45,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 3431 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 03:49:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6438 states. [2021-12-28 03:49:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6438 to 6183. [2021-12-28 03:49:46,052 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) [2021-12-28 03:49:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6183 states to 6183 states and 8715 transitions. [2021-12-28 03:49:46,074 INFO L78 Accepts]: Start accepts. Automaton has 6183 states and 8715 transitions. Word has length 73 [2021-12-28 03:49:46,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:46,075 INFO L470 AbstractCegarLoop]: Abstraction has 6183 states and 8715 transitions. [2021-12-28 03:49:46,075 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) [2021-12-28 03:49:46,075 INFO L276 IsEmpty]: Start isEmpty. Operand 6183 states and 8715 transitions. [2021-12-28 03:49:46,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-28 03:49:46,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:46,079 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] [2021-12-28 03:49:46,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:49:46,079 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:46,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash -826119531, now seen corresponding path program 1 times [2021-12-28 03:49:46,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:46,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130905313] [2021-12-28 03:49:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:46,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:46,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:49:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:46,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:46,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:49:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:46,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:49:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:46,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:49:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-28 03:49:46,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:46,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130905313] [2021-12-28 03:49:46,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130905313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:46,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:46,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:49:46,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929596768] [2021-12-28 03:49:46,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:46,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:49:46,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:46,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:49:46,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:49:46,208 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) [2021-12-28 03:49:48,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:48,175 INFO L93 Difference]: Finished difference Result 11211 states and 16571 transitions. [2021-12-28 03:49:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:49:48,175 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 [2021-12-28 03:49:48,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:48,214 INFO L225 Difference]: With dead ends: 11211 [2021-12-28 03:49:48,214 INFO L226 Difference]: Without dead ends: 11087 [2021-12-28 03:49:48,221 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 [2021-12-28 03:49:48,221 INFO L933 BasicCegarLoop]: 1453 mSDtfsCounter, 945 mSDsluCounter, 4930 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 6383 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:48,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [951 Valid, 6383 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 03:49:48,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11087 states. [2021-12-28 03:49:48,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11087 to 6150. [2021-12-28 03:49:48,730 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) [2021-12-28 03:49:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6150 states to 6150 states and 8662 transitions. [2021-12-28 03:49:48,751 INFO L78 Accepts]: Start accepts. Automaton has 6150 states and 8662 transitions. Word has length 73 [2021-12-28 03:49:48,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:48,753 INFO L470 AbstractCegarLoop]: Abstraction has 6150 states and 8662 transitions. [2021-12-28 03:49:48,753 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) [2021-12-28 03:49:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 6150 states and 8662 transitions. [2021-12-28 03:49:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-28 03:49:48,757 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:48,757 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] [2021-12-28 03:49:48,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 03:49:48,758 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:48,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:48,758 INFO L85 PathProgramCache]: Analyzing trace with hash -672097803, now seen corresponding path program 1 times [2021-12-28 03:49:48,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:48,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410378151] [2021-12-28 03:49:48,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:48,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:48,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:49:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:48,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:48,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 03:49:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:48,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:49:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:48,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 03:49:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:48,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 03:49:48,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:48,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410378151] [2021-12-28 03:49:48,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410378151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:48,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:48,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:49:48,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757525982] [2021-12-28 03:49:48,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:48,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:49:48,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:48,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:49:48,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:49:48,923 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) [2021-12-28 03:49:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:50,927 INFO L93 Difference]: Finished difference Result 11076 states and 16372 transitions. [2021-12-28 03:49:50,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:49:50,928 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 [2021-12-28 03:49:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:50,967 INFO L225 Difference]: With dead ends: 11076 [2021-12-28 03:49:50,967 INFO L226 Difference]: Without dead ends: 10980 [2021-12-28 03:49:50,977 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 [2021-12-28 03:49:50,978 INFO L933 BasicCegarLoop]: 1442 mSDtfsCounter, 937 mSDsluCounter, 4908 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 6350 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:50,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 6350 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 03:49:50,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10980 states. [2021-12-28 03:49:51,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10980 to 6102. [2021-12-28 03:49:51,425 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) [2021-12-28 03:49:51,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 8588 transitions. [2021-12-28 03:49:51,445 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 8588 transitions. Word has length 79 [2021-12-28 03:49:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:51,446 INFO L470 AbstractCegarLoop]: Abstraction has 6102 states and 8588 transitions. [2021-12-28 03:49:51,446 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) [2021-12-28 03:49:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 8588 transitions. [2021-12-28 03:49:51,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-28 03:49:51,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:51,452 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] [2021-12-28 03:49:51,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 03:49:51,453 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:51,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:51,453 INFO L85 PathProgramCache]: Analyzing trace with hash -265053531, now seen corresponding path program 1 times [2021-12-28 03:49:51,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:51,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54564023] [2021-12-28 03:49:51,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:51,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:51,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:49:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:51,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:51,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:49:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:51,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:49:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-28 03:49:51,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:51,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54564023] [2021-12-28 03:49:51,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54564023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:51,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:51,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:49:51,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053279346] [2021-12-28 03:49:51,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:51,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:49:51,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:51,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:49:51,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:49:51,549 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) [2021-12-28 03:49:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:54,241 INFO L93 Difference]: Finished difference Result 18611 states and 27716 transitions. [2021-12-28 03:49:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:49:54,242 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 [2021-12-28 03:49:54,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:54,317 INFO L225 Difference]: With dead ends: 18611 [2021-12-28 03:49:54,317 INFO L226 Difference]: Without dead ends: 15645 [2021-12-28 03:49:54,337 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 [2021-12-28 03:49:54,337 INFO L933 BasicCegarLoop]: 1591 mSDtfsCounter, 1362 mSDsluCounter, 5241 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 6832 SdHoareTripleChecker+Invalid, 3663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:54,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 6832 Invalid, 3663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [751 Valid, 2912 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-28 03:49:54,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15645 states. [2021-12-28 03:49:55,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15645 to 6100. [2021-12-28 03:49:55,091 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) [2021-12-28 03:49:55,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6100 states to 6100 states and 8584 transitions. [2021-12-28 03:49:55,111 INFO L78 Accepts]: Start accepts. Automaton has 6100 states and 8584 transitions. Word has length 75 [2021-12-28 03:49:55,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:55,111 INFO L470 AbstractCegarLoop]: Abstraction has 6100 states and 8584 transitions. [2021-12-28 03:49:55,111 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) [2021-12-28 03:49:55,111 INFO L276 IsEmpty]: Start isEmpty. Operand 6100 states and 8584 transitions. [2021-12-28 03:49:55,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-28 03:49:55,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:55,118 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] [2021-12-28 03:49:55,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 03:49:55,118 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:55,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:55,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1225886074, now seen corresponding path program 1 times [2021-12-28 03:49:55,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:55,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819759677] [2021-12-28 03:49:55,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:55,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:55,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:49:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:55,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:55,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 03:49:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:55,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:49:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 03:49:55,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:55,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819759677] [2021-12-28 03:49:55,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819759677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:55,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:55,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:49:55,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947950382] [2021-12-28 03:49:55,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:55,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:49:55,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:55,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:49:55,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:49:55,230 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) [2021-12-28 03:49:56,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:56,886 INFO L93 Difference]: Finished difference Result 8675 states and 12570 transitions. [2021-12-28 03:49:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:49:56,887 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 [2021-12-28 03:49:56,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:56,887 INFO L225 Difference]: With dead ends: 8675 [2021-12-28 03:49:56,887 INFO L226 Difference]: Without dead ends: 0 [2021-12-28 03:49:56,900 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 [2021-12-28 03:49:56,901 INFO L933 BasicCegarLoop]: 1465 mSDtfsCounter, 964 mSDsluCounter, 4942 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 694 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 6407 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 694 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:56,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [970 Valid, 6407 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [694 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 03:49:56,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-28 03:49:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-28 03:49:56,901 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) [2021-12-28 03:49:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-28 03:49:56,903 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2021-12-28 03:49:56,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:56,903 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 03:49:56,903 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) [2021-12-28 03:49:56,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-28 03:49:56,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-28 03:49:56,905 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-28 03:49:56,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 03:49:56,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.