./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 57ba9a4d546a973620a0029f54a814a104db676a0fd0f250dd5545a7c0f94302 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 00:08:49,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:08:49,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:08:49,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:08:49,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:08:49,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:08:49,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:08:49,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:08:49,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:08:49,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:08:49,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:08:49,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:08:49,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:08:49,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:08:49,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:08:49,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:08:49,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:08:49,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:08:49,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:08:49,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:08:49,506 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:08:49,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:08:49,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:08:49,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:08:49,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:08:49,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:08:49,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:08:49,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:08:49,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:08:49,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:08:49,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:08:49,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:08:49,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:08:49,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:08:49,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:08:49,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:08:49,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:08:49,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:08:49,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:08:49,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:08:49,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:08:49,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:08:49,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 00:08:49,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:08:49,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:08:49,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:08:49,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:08:49,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:08:49,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:08:49,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:08:49,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:08:49,558 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:08:49,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:08:49,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 00:08:49,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:08:49,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:08:49,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:08:49,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:08:49,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:08:49,560 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:08:49,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:08:49,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:08:49,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:08:49,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:08:49,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:08:49,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:08:49,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:08:49,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:08:49,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 00:08:49,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 00:08:49,563 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:08:49,563 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:08:49,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:08:49,564 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57ba9a4d546a973620a0029f54a814a104db676a0fd0f250dd5545a7c0f94302 [2022-07-14 00:08:49,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:08:49,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:08:49,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:08:49,812 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:08:49,812 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:08:49,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i [2022-07-14 00:08:49,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2a7095e/9182e218e2624d7cbe069fe417d2d2cc/FLAG97748b65d [2022-07-14 00:08:50,514 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:08:50,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i [2022-07-14 00:08:50,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2a7095e/9182e218e2624d7cbe069fe417d2d2cc/FLAG97748b65d [2022-07-14 00:08:50,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2a7095e/9182e218e2624d7cbe069fe417d2d2cc [2022-07-14 00:08:50,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:08:50,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:08:50,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:08:50,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:08:50,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:08:50,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:08:50" (1/1) ... [2022-07-14 00:08:50,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de74211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:08:50, skipping insertion in model container [2022-07-14 00:08:50,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:08:50" (1/1) ... [2022-07-14 00:08:50,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:08:50,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:08:51,352 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i[101600,101613] [2022-07-14 00:08:51,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:08:51,540 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:08:51,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i[101600,101613] [2022-07-14 00:08:51,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:08:51,747 INFO L208 MainTranslator]: Completed translation [2022-07-14 00:08:51,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:08:51 WrapperNode [2022-07-14 00:08:51,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 00:08:51,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 00:08:51,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 00:08:51,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 00:08:51,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:08:51" (1/1) ... [2022-07-14 00:08:51,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:08:51" (1/1) ... [2022-07-14 00:08:51,874 INFO L137 Inliner]: procedures = 113, calls = 417, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1227 [2022-07-14 00:08:51,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 00:08:51,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 00:08:51,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 00:08:51,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 00:08:51,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:08:51" (1/1) ... [2022-07-14 00:08:51,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:08:51" (1/1) ... [2022-07-14 00:08:51,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:08:51" (1/1) ... [2022-07-14 00:08:51,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:08:51" (1/1) ... [2022-07-14 00:08:51,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:08:51" (1/1) ... [2022-07-14 00:08:51,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:08:51" (1/1) ... [2022-07-14 00:08:51,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:08:51" (1/1) ... [2022-07-14 00:08:51,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 00:08:51,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 00:08:51,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 00:08:51,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 00:08:51,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:08:51" (1/1) ... [2022-07-14 00:08:51,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:08:52,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:08:52,040 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) [2022-07-14 00:08:52,093 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 [2022-07-14 00:08:52,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-14 00:08:52,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-14 00:08:52,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-14 00:08:52,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 00:08:52,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 00:08:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 00:08:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-14 00:08:52,129 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-14 00:08:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-14 00:08:52,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-14 00:08:52,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 00:08:52,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 00:08:52,130 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-14 00:08:52,130 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-14 00:08:52,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 00:08:52,130 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-14 00:08:52,130 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-14 00:08:52,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 00:08:52,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 00:08:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 00:08:52,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 00:08:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 00:08:52,131 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 00:08:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 00:08:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_resume [2022-07-14 00:08:52,131 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_resume [2022-07-14 00:08:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-14 00:08:52,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-14 00:08:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_2 [2022-07-14 00:08:52,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_2 [2022-07-14 00:08:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 00:08:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-14 00:08:52,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-14 00:08:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 00:08:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 00:08:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-14 00:08:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_5 [2022-07-14 00:08:52,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_5 [2022-07-14 00:08:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 00:08:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-07-14 00:08:52,134 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-07-14 00:08:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_disconnect [2022-07-14 00:08:52,134 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_disconnect [2022-07-14 00:08:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 00:08:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 00:08:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_delete [2022-07-14 00:08:52,135 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_delete [2022-07-14 00:08:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-14 00:08:52,135 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-14 00:08:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-14 00:08:52,136 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-14 00:08:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 00:08:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-14 00:08:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-14 00:08:52,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-14 00:08:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 00:08:52,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 00:08:52,526 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 00:08:52,527 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 00:08:52,637 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 00:08:52,761 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-14 00:08:53,382 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 00:08:53,397 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 00:08:53,397 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 00:08:53,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:08:53 BoogieIcfgContainer [2022-07-14 00:08:53,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 00:08:53,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 00:08:53,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 00:08:53,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 00:08:53,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:08:50" (1/3) ... [2022-07-14 00:08:53,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1256715a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:08:53, skipping insertion in model container [2022-07-14 00:08:53,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:08:51" (2/3) ... [2022-07-14 00:08:53,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1256715a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:08:53, skipping insertion in model container [2022-07-14 00:08:53,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:08:53" (3/3) ... [2022-07-14 00:08:53,408 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i [2022-07-14 00:08:53,421 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 00:08:53,421 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 00:08:53,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 00:08:53,494 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5c1107e5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4b41b61 [2022-07-14 00:08:53,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 00:08:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 256 states have (on average 1.375) internal successors, (352), 271 states have internal predecessors, (352), 82 states have call successors, (82), 20 states have call predecessors, (82), 18 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2022-07-14 00:08:53,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-14 00:08:53,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:53,514 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:53,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:53,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:53,519 INFO L85 PathProgramCache]: Analyzing trace with hash -536575566, now seen corresponding path program 1 times [2022-07-14 00:08:53,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:08:53,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638737622] [2022-07-14 00:08:53,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:53,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:08:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:53,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:08:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:08:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:08:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 00:08:53,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:08:53,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638737622] [2022-07-14 00:08:53,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638737622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:53,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:53,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:08:53,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939691441] [2022-07-14 00:08:53,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:53,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:08:53,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:08:53,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:08:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:08:53,945 INFO L87 Difference]: Start difference. First operand has 358 states, 256 states have (on average 1.375) internal successors, (352), 271 states have internal predecessors, (352), 82 states have call successors, (82), 20 states have call predecessors, (82), 18 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:08:54,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:54,754 INFO L93 Difference]: Finished difference Result 1050 states and 1526 transitions. [2022-07-14 00:08:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:08:54,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-07-14 00:08:54,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:54,776 INFO L225 Difference]: With dead ends: 1050 [2022-07-14 00:08:54,776 INFO L226 Difference]: Without dead ends: 675 [2022-07-14 00:08:54,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:08:54,791 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 477 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:54,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 1204 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 00:08:54,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-07-14 00:08:54,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 648. [2022-07-14 00:08:54,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 473 states have (on average 1.3488372093023255) internal successors, (638), 482 states have internal predecessors, (638), 140 states have call successors, (140), 35 states have call predecessors, (140), 34 states have return successors, (134), 130 states have call predecessors, (134), 134 states have call successors, (134) [2022-07-14 00:08:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 912 transitions. [2022-07-14 00:08:54,918 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 912 transitions. Word has length 36 [2022-07-14 00:08:54,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:54,918 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 912 transitions. [2022-07-14 00:08:54,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:08:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 912 transitions. [2022-07-14 00:08:54,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-14 00:08:54,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:54,929 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:54,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 00:08:54,930 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:54,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:54,931 INFO L85 PathProgramCache]: Analyzing trace with hash -981122542, now seen corresponding path program 1 times [2022-07-14 00:08:54,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:08:54,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731659126] [2022-07-14 00:08:54,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:54,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:08:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:55,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:08:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:55,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:08:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:55,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:08:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:55,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:08:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 00:08:55,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:08:55,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731659126] [2022-07-14 00:08:55,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731659126] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:55,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:55,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:08:55,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190740289] [2022-07-14 00:08:55,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:55,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:08:55,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:08:55,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:08:55,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:08:55,130 INFO L87 Difference]: Start difference. First operand 648 states and 912 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 00:08:55,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:55,534 INFO L93 Difference]: Finished difference Result 674 states and 953 transitions. [2022-07-14 00:08:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:08:55,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2022-07-14 00:08:55,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:55,539 INFO L225 Difference]: With dead ends: 674 [2022-07-14 00:08:55,539 INFO L226 Difference]: Without dead ends: 671 [2022-07-14 00:08:55,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:08:55,541 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 445 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:55,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 716 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 00:08:55,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-07-14 00:08:55,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 647. [2022-07-14 00:08:55,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 473 states have (on average 1.346723044397463) internal successors, (637), 481 states have internal predecessors, (637), 139 states have call successors, (139), 35 states have call predecessors, (139), 34 states have return successors, (134), 130 states have call predecessors, (134), 134 states have call successors, (134) [2022-07-14 00:08:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 910 transitions. [2022-07-14 00:08:55,574 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 910 transitions. Word has length 46 [2022-07-14 00:08:55,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:55,574 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 910 transitions. [2022-07-14 00:08:55,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 00:08:55,575 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 910 transitions. [2022-07-14 00:08:55,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-14 00:08:55,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:55,577 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:55,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 00:08:55,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:55,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:55,578 INFO L85 PathProgramCache]: Analyzing trace with hash -350236783, now seen corresponding path program 1 times [2022-07-14 00:08:55,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:08:55,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306624926] [2022-07-14 00:08:55,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:55,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:08:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:55,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:08:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:55,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:08:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:55,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:08:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:55,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:08:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 00:08:55,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:08:55,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306624926] [2022-07-14 00:08:55,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306624926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:55,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:55,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:08:55,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137399312] [2022-07-14 00:08:55,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:55,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:08:55,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:08:55,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:08:55,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:08:55,774 INFO L87 Difference]: Start difference. First operand 647 states and 910 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 00:08:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:56,143 INFO L93 Difference]: Finished difference Result 673 states and 951 transitions. [2022-07-14 00:08:56,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:08:56,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2022-07-14 00:08:56,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:56,147 INFO L225 Difference]: With dead ends: 673 [2022-07-14 00:08:56,148 INFO L226 Difference]: Without dead ends: 670 [2022-07-14 00:08:56,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:08:56,149 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 442 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:56,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 713 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 00:08:56,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-07-14 00:08:56,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 646. [2022-07-14 00:08:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 473 states have (on average 1.3446088794926003) internal successors, (636), 480 states have internal predecessors, (636), 138 states have call successors, (138), 35 states have call predecessors, (138), 34 states have return successors, (134), 130 states have call predecessors, (134), 134 states have call successors, (134) [2022-07-14 00:08:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 908 transitions. [2022-07-14 00:08:56,178 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 908 transitions. Word has length 47 [2022-07-14 00:08:56,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:56,179 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 908 transitions. [2022-07-14 00:08:56,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 00:08:56,179 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 908 transitions. [2022-07-14 00:08:56,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-14 00:08:56,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:56,181 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:56,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 00:08:56,181 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:56,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:56,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2027357429, now seen corresponding path program 1 times [2022-07-14 00:08:56,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:08:56,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970649619] [2022-07-14 00:08:56,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:56,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:08:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:08:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:56,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:08:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:56,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:08:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:56,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:08:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 00:08:56,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:08:56,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970649619] [2022-07-14 00:08:56,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970649619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:56,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:56,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:08:56,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579547181] [2022-07-14 00:08:56,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:56,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:08:56,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:08:56,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:08:56,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:08:56,279 INFO L87 Difference]: Start difference. First operand 646 states and 908 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 00:08:56,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:56,681 INFO L93 Difference]: Finished difference Result 672 states and 949 transitions. [2022-07-14 00:08:56,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:08:56,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2022-07-14 00:08:56,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:56,685 INFO L225 Difference]: With dead ends: 672 [2022-07-14 00:08:56,685 INFO L226 Difference]: Without dead ends: 669 [2022-07-14 00:08:56,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:08:56,687 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 439 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:56,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 710 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 00:08:56,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-07-14 00:08:56,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 645. [2022-07-14 00:08:56,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 473 states have (on average 1.342494714587738) internal successors, (635), 479 states have internal predecessors, (635), 137 states have call successors, (137), 35 states have call predecessors, (137), 34 states have return successors, (134), 130 states have call predecessors, (134), 134 states have call successors, (134) [2022-07-14 00:08:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 906 transitions. [2022-07-14 00:08:56,720 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 906 transitions. Word has length 48 [2022-07-14 00:08:56,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:56,720 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 906 transitions. [2022-07-14 00:08:56,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 00:08:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 906 transitions. [2022-07-14 00:08:56,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-14 00:08:56,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:56,722 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:56,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 00:08:56,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:56,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:56,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1576628460, now seen corresponding path program 1 times [2022-07-14 00:08:56,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:08:56,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722926004] [2022-07-14 00:08:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:56,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:08:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:56,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:08:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:08:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:56,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:08:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:08:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 00:08:56,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:08:56,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722926004] [2022-07-14 00:08:56,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722926004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:56,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:56,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:08:56,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88514044] [2022-07-14 00:08:56,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:56,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:08:56,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:08:56,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:08:56,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:08:56,872 INFO L87 Difference]: Start difference. First operand 645 states and 906 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 00:08:57,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:57,619 INFO L93 Difference]: Finished difference Result 1952 states and 2756 transitions. [2022-07-14 00:08:57,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:08:57,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2022-07-14 00:08:57,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:57,625 INFO L225 Difference]: With dead ends: 1952 [2022-07-14 00:08:57,626 INFO L226 Difference]: Without dead ends: 1318 [2022-07-14 00:08:57,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:08:57,628 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 463 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:57,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1309 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 00:08:57,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-07-14 00:08:57,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1266. [2022-07-14 00:08:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 929 states have (on average 1.3444564047362755) internal successors, (1249), 939 states have internal predecessors, (1249), 268 states have call successors, (268), 69 states have call predecessors, (268), 68 states have return successors, (265), 257 states have call predecessors, (265), 265 states have call successors, (265) [2022-07-14 00:08:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1782 transitions. [2022-07-14 00:08:57,677 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1782 transitions. Word has length 49 [2022-07-14 00:08:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:57,678 INFO L495 AbstractCegarLoop]: Abstraction has 1266 states and 1782 transitions. [2022-07-14 00:08:57,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 00:08:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1782 transitions. [2022-07-14 00:08:57,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-14 00:08:57,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:57,680 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:57,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 00:08:57,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:57,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:57,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1631036456, now seen corresponding path program 1 times [2022-07-14 00:08:57,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:08:57,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133688525] [2022-07-14 00:08:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:57,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:08:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:57,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:08:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:57,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:08:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:08:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:57,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:08:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 00:08:57,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:08:57,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133688525] [2022-07-14 00:08:57,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133688525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:57,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:57,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:08:57,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323416442] [2022-07-14 00:08:57,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:57,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:08:57,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:08:57,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:08:57,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:08:57,786 INFO L87 Difference]: Start difference. First operand 1266 states and 1782 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 00:08:58,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:58,158 INFO L93 Difference]: Finished difference Result 1316 states and 1860 transitions. [2022-07-14 00:08:58,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:08:58,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2022-07-14 00:08:58,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:58,178 INFO L225 Difference]: With dead ends: 1316 [2022-07-14 00:08:58,178 INFO L226 Difference]: Without dead ends: 1304 [2022-07-14 00:08:58,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:08:58,180 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 435 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:58,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 709 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 00:08:58,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2022-07-14 00:08:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1256. [2022-07-14 00:08:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 920 states have (on average 1.3434782608695652) internal successors, (1236), 929 states have internal predecessors, (1236), 267 states have call successors, (267), 69 states have call predecessors, (267), 68 states have return successors, (265), 257 states have call predecessors, (265), 265 states have call successors, (265) [2022-07-14 00:08:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1768 transitions. [2022-07-14 00:08:58,272 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1768 transitions. Word has length 50 [2022-07-14 00:08:58,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:58,272 INFO L495 AbstractCegarLoop]: Abstraction has 1256 states and 1768 transitions. [2022-07-14 00:08:58,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 00:08:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1768 transitions. [2022-07-14 00:08:58,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-14 00:08:58,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:58,277 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:58,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 00:08:58,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:58,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:58,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1468685094, now seen corresponding path program 1 times [2022-07-14 00:08:58,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:08:58,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982318336] [2022-07-14 00:08:58,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:58,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:08:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:58,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:08:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:58,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:08:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:08:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 00:08:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:58,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:08:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:58,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:08:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:58,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-14 00:08:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-14 00:08:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:58,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-14 00:08:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-14 00:08:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:58,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 00:08:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-14 00:08:58,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:08:58,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982318336] [2022-07-14 00:08:58,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982318336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:58,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:58,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:08:58,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139619810] [2022-07-14 00:08:58,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:58,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:08:58,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:08:58,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:08:58,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:08:58,401 INFO L87 Difference]: Start difference. First operand 1256 states and 1768 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:08:59,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:59,016 INFO L93 Difference]: Finished difference Result 3199 states and 4459 transitions. [2022-07-14 00:08:59,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:08:59,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2022-07-14 00:08:59,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:59,026 INFO L225 Difference]: With dead ends: 3199 [2022-07-14 00:08:59,026 INFO L226 Difference]: Without dead ends: 1954 [2022-07-14 00:08:59,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:08:59,030 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 286 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:59,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 1376 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 00:08:59,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2022-07-14 00:08:59,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1841. [2022-07-14 00:08:59,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1357 states have (on average 1.3352984524686808) internal successors, (1812), 1370 states have internal predecessors, (1812), 368 states have call successors, (368), 116 states have call predecessors, (368), 115 states have return successors, (366), 354 states have call predecessors, (366), 366 states have call successors, (366) [2022-07-14 00:08:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2546 transitions. [2022-07-14 00:08:59,146 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2546 transitions. Word has length 107 [2022-07-14 00:08:59,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:59,147 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2546 transitions. [2022-07-14 00:08:59,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:08:59,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2546 transitions. [2022-07-14 00:08:59,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-14 00:08:59,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:59,150 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:59,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 00:08:59,151 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:59,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:59,151 INFO L85 PathProgramCache]: Analyzing trace with hash 188231278, now seen corresponding path program 1 times [2022-07-14 00:08:59,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:08:59,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879611972] [2022-07-14 00:08:59,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:59,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:08:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:08:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:08:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:08:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:08:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:08:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:08:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-14 00:08:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-14 00:08:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:08:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-14 00:08:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 00:08:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-14 00:08:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-14 00:08:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-14 00:08:59,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:08:59,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879611972] [2022-07-14 00:08:59,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879611972] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:08:59,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9490612] [2022-07-14 00:08:59,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:59,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:08:59,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:08:59,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:08:59,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 00:08:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:59,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 00:08:59,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-14 00:08:59,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:08:59,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9490612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:59,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:08:59,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-07-14 00:08:59,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196680649] [2022-07-14 00:08:59,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:59,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:08:59,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:08:59,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:08:59,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:08:59,859 INFO L87 Difference]: Start difference. First operand 1841 states and 2546 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-14 00:09:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:00,364 INFO L93 Difference]: Finished difference Result 5492 states and 7596 transitions. [2022-07-14 00:09:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:09:00,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-07-14 00:09:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:00,390 INFO L225 Difference]: With dead ends: 5492 [2022-07-14 00:09:00,391 INFO L226 Difference]: Without dead ends: 5481 [2022-07-14 00:09:00,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:09:00,396 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 836 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:00,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1754 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 00:09:00,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2022-07-14 00:09:00,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5433. [2022-07-14 00:09:00,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5433 states, 3997 states have (on average 1.3400050037528146) internal successors, (5356), 4058 states have internal predecessors, (5356), 1092 states have call successors, (1092), 344 states have call predecessors, (1092), 343 states have return successors, (1090), 1030 states have call predecessors, (1090), 1090 states have call successors, (1090) [2022-07-14 00:09:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5433 states to 5433 states and 7538 transitions. [2022-07-14 00:09:00,710 INFO L78 Accepts]: Start accepts. Automaton has 5433 states and 7538 transitions. Word has length 129 [2022-07-14 00:09:00,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:00,712 INFO L495 AbstractCegarLoop]: Abstraction has 5433 states and 7538 transitions. [2022-07-14 00:09:00,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-14 00:09:00,712 INFO L276 IsEmpty]: Start isEmpty. Operand 5433 states and 7538 transitions. [2022-07-14 00:09:00,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-14 00:09:00,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:00,722 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:00,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 00:09:00,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:09:00,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:00,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1400116624, now seen corresponding path program 1 times [2022-07-14 00:09:00,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:00,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231878827] [2022-07-14 00:09:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:00,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-14 00:09:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-14 00:09:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:09:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-14 00:09:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 00:09:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-14 00:09:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-14 00:09:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-14 00:09:01,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:01,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231878827] [2022-07-14 00:09:01,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231878827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:01,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:09:01,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 00:09:01,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276027002] [2022-07-14 00:09:01,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:01,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 00:09:01,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:01,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 00:09:01,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:09:01,193 INFO L87 Difference]: Start difference. First operand 5433 states and 7538 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-14 00:09:02,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:02,196 INFO L93 Difference]: Finished difference Result 13663 states and 19545 transitions. [2022-07-14 00:09:02,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 00:09:02,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-07-14 00:09:02,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:02,244 INFO L225 Difference]: With dead ends: 13663 [2022-07-14 00:09:02,245 INFO L226 Difference]: Without dead ends: 8248 [2022-07-14 00:09:02,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:09:02,266 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 415 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2996 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:02,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 2996 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 00:09:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8248 states. [2022-07-14 00:09:02,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8248 to 5493. [2022-07-14 00:09:02,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 4045 states have (on average 1.3359703337453646) internal successors, (5404), 4106 states have internal predecessors, (5404), 1092 states have call successors, (1092), 344 states have call predecessors, (1092), 355 states have return successors, (1126), 1042 states have call predecessors, (1126), 1090 states have call successors, (1126) [2022-07-14 00:09:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 7622 transitions. [2022-07-14 00:09:02,626 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 7622 transitions. Word has length 129 [2022-07-14 00:09:02,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:02,626 INFO L495 AbstractCegarLoop]: Abstraction has 5493 states and 7622 transitions. [2022-07-14 00:09:02,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-14 00:09:02,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 7622 transitions. [2022-07-14 00:09:02,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-14 00:09:02,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:02,635 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:02,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-14 00:09:02,636 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:02,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:02,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1120717474, now seen corresponding path program 1 times [2022-07-14 00:09:02,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:02,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048608782] [2022-07-14 00:09:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:02,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-14 00:09:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-14 00:09:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-14 00:09:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-14 00:09:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-14 00:09:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-14 00:09:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-14 00:09:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-14 00:09:02,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:02,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048608782] [2022-07-14 00:09:02,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048608782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:02,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:09:02,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 00:09:02,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409203848] [2022-07-14 00:09:02,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:02,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 00:09:02,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:02,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 00:09:02,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:09:02,936 INFO L87 Difference]: Start difference. First operand 5493 states and 7622 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-14 00:09:04,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:04,521 INFO L93 Difference]: Finished difference Result 15501 states and 22090 transitions. [2022-07-14 00:09:04,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 00:09:04,522 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 135 [2022-07-14 00:09:04,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:04,571 INFO L225 Difference]: With dead ends: 15501 [2022-07-14 00:09:04,571 INFO L226 Difference]: Without dead ends: 10026 [2022-07-14 00:09:04,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-07-14 00:09:04,588 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 643 mSDsluCounter, 2860 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 3567 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:04,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 3567 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-14 00:09:04,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10026 states. [2022-07-14 00:09:04,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10026 to 7278. [2022-07-14 00:09:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7278 states, 5416 states have (on average 1.3389955686853767) internal successors, (7252), 5511 states have internal predecessors, (7252), 1389 states have call successors, (1389), 467 states have call predecessors, (1389), 472 states have return successors, (1441), 1299 states have call predecessors, (1441), 1387 states have call successors, (1441) [2022-07-14 00:09:05,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7278 states to 7278 states and 10082 transitions. [2022-07-14 00:09:05,002 INFO L78 Accepts]: Start accepts. Automaton has 7278 states and 10082 transitions. Word has length 135 [2022-07-14 00:09:05,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:05,003 INFO L495 AbstractCegarLoop]: Abstraction has 7278 states and 10082 transitions. [2022-07-14 00:09:05,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-14 00:09:05,004 INFO L276 IsEmpty]: Start isEmpty. Operand 7278 states and 10082 transitions. [2022-07-14 00:09:05,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-14 00:09:05,019 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:05,019 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:05,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-14 00:09:05,020 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:05,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:05,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1875261395, now seen corresponding path program 1 times [2022-07-14 00:09:05,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:05,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505606873] [2022-07-14 00:09:05,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:05,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-14 00:09:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:09:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:09:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:09:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:09:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:09:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 00:09:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-14 00:09:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 00:09:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-14 00:09:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-14 00:09:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-14 00:09:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-14 00:09:05,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:05,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505606873] [2022-07-14 00:09:05,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505606873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:05,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:09:05,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:09:05,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251247866] [2022-07-14 00:09:05,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:05,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:09:05,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:05,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:09:05,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:09:05,201 INFO L87 Difference]: Start difference. First operand 7278 states and 10082 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-14 00:09:06,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:06,756 INFO L93 Difference]: Finished difference Result 18959 states and 26435 transitions. [2022-07-14 00:09:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 00:09:06,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 179 [2022-07-14 00:09:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:06,801 INFO L225 Difference]: With dead ends: 18959 [2022-07-14 00:09:06,801 INFO L226 Difference]: Without dead ends: 11699 [2022-07-14 00:09:06,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-07-14 00:09:06,821 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 489 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:06,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 2088 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-14 00:09:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11699 states. [2022-07-14 00:09:07,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11699 to 11036. [2022-07-14 00:09:07,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11036 states, 8377 states have (on average 1.3416497552823206) internal successors, (11239), 8486 states have internal predecessors, (11239), 1969 states have call successors, (1969), 664 states have call predecessors, (1969), 689 states have return successors, (2039), 1885 states have call predecessors, (2039), 1967 states have call successors, (2039) [2022-07-14 00:09:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11036 states to 11036 states and 15247 transitions. [2022-07-14 00:09:07,496 INFO L78 Accepts]: Start accepts. Automaton has 11036 states and 15247 transitions. Word has length 179 [2022-07-14 00:09:07,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:07,497 INFO L495 AbstractCegarLoop]: Abstraction has 11036 states and 15247 transitions. [2022-07-14 00:09:07,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-14 00:09:07,497 INFO L276 IsEmpty]: Start isEmpty. Operand 11036 states and 15247 transitions. [2022-07-14 00:09:07,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-14 00:09:07,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:07,520 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:07,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-14 00:09:07,520 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:07,521 INFO L85 PathProgramCache]: Analyzing trace with hash 385149395, now seen corresponding path program 2 times [2022-07-14 00:09:07,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:07,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176734414] [2022-07-14 00:09:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:07,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:09:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:09:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:09:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:09:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 00:09:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-14 00:09:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-14 00:09:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:09:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 00:09:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-14 00:09:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 00:09:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-14 00:09:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-14 00:09:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-14 00:09:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-07-14 00:09:07,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:07,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176734414] [2022-07-14 00:09:07,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176734414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:07,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:09:07,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:09:07,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617658251] [2022-07-14 00:09:07,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:07,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:09:07,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:07,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:09:07,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:09:07,695 INFO L87 Difference]: Start difference. First operand 11036 states and 15247 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-14 00:09:09,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:09,666 INFO L93 Difference]: Finished difference Result 25811 states and 35757 transitions. [2022-07-14 00:09:09,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 00:09:09,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2022-07-14 00:09:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:09,720 INFO L225 Difference]: With dead ends: 25811 [2022-07-14 00:09:09,721 INFO L226 Difference]: Without dead ends: 14797 [2022-07-14 00:09:09,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:09:09,761 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 424 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:09,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 2030 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-14 00:09:09,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14797 states. [2022-07-14 00:09:10,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14797 to 14270. [2022-07-14 00:09:10,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14270 states, 10819 states have (on average 1.3431001016729827) internal successors, (14531), 10958 states have internal predecessors, (14531), 2569 states have call successors, (2569), 838 states have call predecessors, (2569), 881 states have return successors, (2657), 2473 states have call predecessors, (2657), 2567 states have call successors, (2657) [2022-07-14 00:09:10,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14270 states to 14270 states and 19757 transitions. [2022-07-14 00:09:10,675 INFO L78 Accepts]: Start accepts. Automaton has 14270 states and 19757 transitions. Word has length 179 [2022-07-14 00:09:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:10,676 INFO L495 AbstractCegarLoop]: Abstraction has 14270 states and 19757 transitions. [2022-07-14 00:09:10,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-14 00:09:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 14270 states and 19757 transitions. [2022-07-14 00:09:10,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-14 00:09:10,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:10,706 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:10,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-14 00:09:10,706 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:10,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash -734080811, now seen corresponding path program 1 times [2022-07-14 00:09:10,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:10,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813437845] [2022-07-14 00:09:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:10,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:09:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 00:09:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 00:09:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:09:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 00:09:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-14 00:09:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 00:09:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-14 00:09:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-14 00:09:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-14 00:09:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-14 00:09:10,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:10,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813437845] [2022-07-14 00:09:10,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813437845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:10,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:09:10,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:09:10,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838869818] [2022-07-14 00:09:10,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:10,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:09:10,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:10,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:09:10,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:09:10,914 INFO L87 Difference]: Start difference. First operand 14270 states and 19757 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-14 00:09:13,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:13,284 INFO L93 Difference]: Finished difference Result 39420 states and 55769 transitions. [2022-07-14 00:09:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 00:09:13,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 179 [2022-07-14 00:09:13,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:13,407 INFO L225 Difference]: With dead ends: 39420 [2022-07-14 00:09:13,407 INFO L226 Difference]: Without dead ends: 28377 [2022-07-14 00:09:13,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-07-14 00:09:13,447 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 893 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:13,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 2428 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-14 00:09:13,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28377 states. [2022-07-14 00:09:14,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28377 to 14302. [2022-07-14 00:09:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14302 states, 10851 states have (on average 1.342088286793844) internal successors, (14563), 10990 states have internal predecessors, (14563), 2569 states have call successors, (2569), 838 states have call predecessors, (2569), 881 states have return successors, (2657), 2473 states have call predecessors, (2657), 2567 states have call successors, (2657) [2022-07-14 00:09:14,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14302 states to 14302 states and 19789 transitions. [2022-07-14 00:09:14,599 INFO L78 Accepts]: Start accepts. Automaton has 14302 states and 19789 transitions. Word has length 179 [2022-07-14 00:09:14,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:14,600 INFO L495 AbstractCegarLoop]: Abstraction has 14302 states and 19789 transitions. [2022-07-14 00:09:14,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-14 00:09:14,600 INFO L276 IsEmpty]: Start isEmpty. Operand 14302 states and 19789 transitions. [2022-07-14 00:09:14,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-14 00:09:14,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:14,635 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:14,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-14 00:09:14,635 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:14,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:14,636 INFO L85 PathProgramCache]: Analyzing trace with hash -814466245, now seen corresponding path program 1 times [2022-07-14 00:09:14,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:14,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437300037] [2022-07-14 00:09:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:14,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-14 00:09:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-14 00:09:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-14 00:09:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-14 00:09:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-14 00:09:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-14 00:09:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-14 00:09:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-14 00:09:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-14 00:09:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-14 00:09:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:14,785 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-14 00:09:14,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:14,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437300037] [2022-07-14 00:09:14,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437300037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:14,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:09:14,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:09:14,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497478538] [2022-07-14 00:09:14,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:14,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:09:14,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:14,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:09:14,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:09:14,788 INFO L87 Difference]: Start difference. First operand 14302 states and 19789 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-14 00:09:16,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:16,464 INFO L93 Difference]: Finished difference Result 30158 states and 41553 transitions. [2022-07-14 00:09:16,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 00:09:16,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 188 [2022-07-14 00:09:16,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:16,530 INFO L225 Difference]: With dead ends: 30158 [2022-07-14 00:09:16,530 INFO L226 Difference]: Without dead ends: 15878 [2022-07-14 00:09:16,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:09:16,569 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 485 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:16,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1544 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-14 00:09:16,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15878 states. [2022-07-14 00:09:17,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15878 to 15337. [2022-07-14 00:09:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15337 states, 11815 states have (on average 1.3262801523487093) internal successors, (15670), 11910 states have internal predecessors, (15670), 2513 states have call successors, (2513), 969 states have call predecessors, (2513), 1008 states have return successors, (2591), 2457 states have call predecessors, (2591), 2511 states have call successors, (2591) [2022-07-14 00:09:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15337 states to 15337 states and 20774 transitions. [2022-07-14 00:09:17,619 INFO L78 Accepts]: Start accepts. Automaton has 15337 states and 20774 transitions. Word has length 188 [2022-07-14 00:09:17,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:17,620 INFO L495 AbstractCegarLoop]: Abstraction has 15337 states and 20774 transitions. [2022-07-14 00:09:17,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-14 00:09:17,621 INFO L276 IsEmpty]: Start isEmpty. Operand 15337 states and 20774 transitions. [2022-07-14 00:09:17,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-14 00:09:17,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:17,661 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:17,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-14 00:09:17,661 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:17,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:17,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1116840713, now seen corresponding path program 2 times [2022-07-14 00:09:17,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:17,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100044874] [2022-07-14 00:09:17,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:17,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:09:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 00:09:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 00:09:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:09:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 00:09:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-14 00:09:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 00:09:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-14 00:09:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-14 00:09:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-14 00:09:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-14 00:09:18,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:18,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100044874] [2022-07-14 00:09:18,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100044874] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:09:18,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578004046] [2022-07-14 00:09:18,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 00:09:18,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:09:18,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:09:18,121 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:09:18,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 00:09:18,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 00:09:18,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:09:18,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 00:09:18,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:09:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 67 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-14 00:09:18,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:09:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-14 00:09:19,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578004046] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:09:19,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:09:19,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 9 [2022-07-14 00:09:19,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381431908] [2022-07-14 00:09:19,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:09:19,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 00:09:19,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:19,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 00:09:19,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:09:19,101 INFO L87 Difference]: Start difference. First operand 15337 states and 20774 transitions. Second operand has 9 states, 9 states have (on average 21.88888888888889) internal successors, (197), 6 states have internal predecessors, (197), 5 states have call successors, (45), 7 states have call predecessors, (45), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-07-14 00:09:22,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:22,878 INFO L93 Difference]: Finished difference Result 28734 states and 38755 transitions. [2022-07-14 00:09:22,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-14 00:09:22,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.88888888888889) internal successors, (197), 6 states have internal predecessors, (197), 5 states have call successors, (45), 7 states have call predecessors, (45), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 188 [2022-07-14 00:09:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:22,992 INFO L225 Difference]: With dead ends: 28734 [2022-07-14 00:09:22,992 INFO L226 Difference]: Without dead ends: 28723 [2022-07-14 00:09:23,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 418 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2022-07-14 00:09:23,015 INFO L413 NwaCegarLoop]: 1223 mSDtfsCounter, 1629 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1820 SdHoareTripleChecker+Valid, 3913 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:23,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1820 Valid, 3913 Invalid, 2371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-14 00:09:23,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28723 states. [2022-07-14 00:09:24,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28723 to 14444. [2022-07-14 00:09:24,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14444 states, 11113 states have (on average 1.3267344551426257) internal successors, (14744), 11205 states have internal predecessors, (14744), 2383 states have call successors, (2383), 915 states have call predecessors, (2383), 947 states have return successors, (2457), 2323 states have call predecessors, (2457), 2381 states have call successors, (2457) [2022-07-14 00:09:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14444 states to 14444 states and 19584 transitions. [2022-07-14 00:09:24,541 INFO L78 Accepts]: Start accepts. Automaton has 14444 states and 19584 transitions. Word has length 188 [2022-07-14 00:09:24,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:24,543 INFO L495 AbstractCegarLoop]: Abstraction has 14444 states and 19584 transitions. [2022-07-14 00:09:24,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.88888888888889) internal successors, (197), 6 states have internal predecessors, (197), 5 states have call successors, (45), 7 states have call predecessors, (45), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-07-14 00:09:24,562 INFO L276 IsEmpty]: Start isEmpty. Operand 14444 states and 19584 transitions. [2022-07-14 00:09:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-14 00:09:24,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:24,595 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:24,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 00:09:24,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-14 00:09:24,812 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:24,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:24,813 INFO L85 PathProgramCache]: Analyzing trace with hash -705168335, now seen corresponding path program 1 times [2022-07-14 00:09:24,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:24,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794924121] [2022-07-14 00:09:24,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:24,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:09:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 00:09:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 00:09:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:09:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 00:09:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-14 00:09:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 00:09:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-14 00:09:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-14 00:09:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-14 00:09:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-14 00:09:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-14 00:09:25,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:25,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794924121] [2022-07-14 00:09:25,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794924121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:25,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:09:25,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:09:25,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282004799] [2022-07-14 00:09:25,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:25,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:09:25,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:25,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:09:25,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:09:25,200 INFO L87 Difference]: Start difference. First operand 14444 states and 19584 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-14 00:09:26,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:26,461 INFO L93 Difference]: Finished difference Result 21976 states and 29885 transitions. [2022-07-14 00:09:26,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 00:09:26,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 189 [2022-07-14 00:09:26,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:26,488 INFO L225 Difference]: With dead ends: 21976 [2022-07-14 00:09:26,488 INFO L226 Difference]: Without dead ends: 7014 [2022-07-14 00:09:26,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:09:26,531 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 453 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:26,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 1470 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-14 00:09:26,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7014 states. [2022-07-14 00:09:27,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7014 to 6549. [2022-07-14 00:09:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6549 states, 5036 states have (on average 1.3157267672756157) internal successors, (6626), 5080 states have internal predecessors, (6626), 1087 states have call successors, (1087), 412 states have call predecessors, (1087), 425 states have return successors, (1121), 1056 states have call predecessors, (1121), 1085 states have call successors, (1121) [2022-07-14 00:09:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6549 states to 6549 states and 8834 transitions. [2022-07-14 00:09:27,322 INFO L78 Accepts]: Start accepts. Automaton has 6549 states and 8834 transitions. Word has length 189 [2022-07-14 00:09:27,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:27,323 INFO L495 AbstractCegarLoop]: Abstraction has 6549 states and 8834 transitions. [2022-07-14 00:09:27,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-14 00:09:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 6549 states and 8834 transitions. [2022-07-14 00:09:27,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-14 00:09:27,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:27,334 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:27,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-14 00:09:27,334 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:27,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:27,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1027767052, now seen corresponding path program 1 times [2022-07-14 00:09:27,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:27,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091193768] [2022-07-14 00:09:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:27,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:09:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-14 00:09:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:09:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:09:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:09:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:09:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-14 00:09:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-14 00:09:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-14 00:09:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-14 00:09:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-14 00:09:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-14 00:09:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-14 00:09:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-14 00:09:27,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:27,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091193768] [2022-07-14 00:09:27,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091193768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:27,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:09:27,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 00:09:27,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462808229] [2022-07-14 00:09:27,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:27,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 00:09:27,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:27,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 00:09:27,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:09:27,528 INFO L87 Difference]: Start difference. First operand 6549 states and 8834 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-14 00:09:29,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:29,684 INFO L93 Difference]: Finished difference Result 16524 states and 22262 transitions. [2022-07-14 00:09:29,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 00:09:29,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 197 [2022-07-14 00:09:29,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:29,715 INFO L225 Difference]: With dead ends: 16524 [2022-07-14 00:09:29,716 INFO L226 Difference]: Without dead ends: 10374 [2022-07-14 00:09:29,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-07-14 00:09:29,732 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 659 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:29,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 2917 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-14 00:09:29,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10374 states. [2022-07-14 00:09:30,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10374 to 6591. [2022-07-14 00:09:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6591 states, 5078 states have (on average 1.3131153997636864) internal successors, (6668), 5122 states have internal predecessors, (6668), 1087 states have call successors, (1087), 412 states have call predecessors, (1087), 425 states have return successors, (1121), 1056 states have call predecessors, (1121), 1085 states have call successors, (1121) [2022-07-14 00:09:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6591 states to 6591 states and 8876 transitions. [2022-07-14 00:09:30,347 INFO L78 Accepts]: Start accepts. Automaton has 6591 states and 8876 transitions. Word has length 197 [2022-07-14 00:09:30,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:30,348 INFO L495 AbstractCegarLoop]: Abstraction has 6591 states and 8876 transitions. [2022-07-14 00:09:30,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-14 00:09:30,348 INFO L276 IsEmpty]: Start isEmpty. Operand 6591 states and 8876 transitions. [2022-07-14 00:09:30,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-14 00:09:30,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:30,359 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:30,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-14 00:09:30,359 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:30,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:30,359 INFO L85 PathProgramCache]: Analyzing trace with hash 18679536, now seen corresponding path program 1 times [2022-07-14 00:09:30,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:30,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330114565] [2022-07-14 00:09:30,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:30,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:09:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 00:09:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 00:09:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:09:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 00:09:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-14 00:09:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 00:09:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-14 00:09:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-14 00:09:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-14 00:09:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-14 00:09:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-14 00:09:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-14 00:09:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-14 00:09:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-14 00:09:30,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:30,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330114565] [2022-07-14 00:09:30,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330114565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:30,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:09:30,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 00:09:30,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012983158] [2022-07-14 00:09:30,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:30,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 00:09:30,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:30,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 00:09:30,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:09:30,711 INFO L87 Difference]: Start difference. First operand 6591 states and 8876 transitions. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-14 00:09:32,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:32,796 INFO L93 Difference]: Finished difference Result 14906 states and 21265 transitions. [2022-07-14 00:09:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 00:09:32,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 195 [2022-07-14 00:09:32,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:32,836 INFO L225 Difference]: With dead ends: 14906 [2022-07-14 00:09:32,836 INFO L226 Difference]: Without dead ends: 13298 [2022-07-14 00:09:32,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-14 00:09:32,848 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 661 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 3573 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:32,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 3573 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-14 00:09:32,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13298 states. [2022-07-14 00:09:33,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13298 to 6621. [2022-07-14 00:09:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6621 states, 5108 states have (on average 1.3112764291307752) internal successors, (6698), 5152 states have internal predecessors, (6698), 1087 states have call successors, (1087), 412 states have call predecessors, (1087), 425 states have return successors, (1121), 1056 states have call predecessors, (1121), 1085 states have call successors, (1121) [2022-07-14 00:09:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6621 states to 6621 states and 8906 transitions. [2022-07-14 00:09:33,511 INFO L78 Accepts]: Start accepts. Automaton has 6621 states and 8906 transitions. Word has length 195 [2022-07-14 00:09:33,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:33,515 INFO L495 AbstractCegarLoop]: Abstraction has 6621 states and 8906 transitions. [2022-07-14 00:09:33,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-14 00:09:33,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6621 states and 8906 transitions. [2022-07-14 00:09:33,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-07-14 00:09:33,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:33,525 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:33,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-14 00:09:33,525 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:33,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:33,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1500364211, now seen corresponding path program 1 times [2022-07-14 00:09:33,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:33,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554288381] [2022-07-14 00:09:33,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:33,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:09:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 00:09:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 00:09:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-14 00:09:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-14 00:09:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:09:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-14 00:09:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-14 00:09:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-14 00:09:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-14 00:09:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-14 00:09:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-14 00:09:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-14 00:09:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-14 00:09:33,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:33,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554288381] [2022-07-14 00:09:33,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554288381] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:09:33,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408507075] [2022-07-14 00:09:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:33,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:09:33,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:09:33,901 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:09:33,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 00:09:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:34,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-14 00:09:34,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:09:35,288 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-14 00:09:35,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:09:35,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408507075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:35,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:09:35,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2022-07-14 00:09:35,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227287305] [2022-07-14 00:09:35,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:35,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 00:09:35,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:35,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 00:09:35,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-14 00:09:35,292 INFO L87 Difference]: Start difference. First operand 6621 states and 8906 transitions. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-14 00:09:37,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:37,793 INFO L93 Difference]: Finished difference Result 17290 states and 23893 transitions. [2022-07-14 00:09:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 00:09:37,794 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 198 [2022-07-14 00:09:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:37,830 INFO L225 Difference]: With dead ends: 17290 [2022-07-14 00:09:37,830 INFO L226 Difference]: Without dead ends: 11962 [2022-07-14 00:09:37,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-07-14 00:09:37,873 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 954 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:37,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 3171 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-14 00:09:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11962 states. [2022-07-14 00:09:38,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11962 to 8221. [2022-07-14 00:09:38,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8221 states, 6411 states have (on average 1.3153954141319606) internal successors, (8433), 6481 states have internal predecessors, (8433), 1275 states have call successors, (1275), 521 states have call predecessors, (1275), 534 states have return successors, (1325), 1218 states have call predecessors, (1325), 1273 states have call successors, (1325) [2022-07-14 00:09:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8221 states to 8221 states and 11033 transitions. [2022-07-14 00:09:38,765 INFO L78 Accepts]: Start accepts. Automaton has 8221 states and 11033 transitions. Word has length 198 [2022-07-14 00:09:38,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:38,765 INFO L495 AbstractCegarLoop]: Abstraction has 8221 states and 11033 transitions. [2022-07-14 00:09:38,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-14 00:09:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 8221 states and 11033 transitions. [2022-07-14 00:09:38,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-14 00:09:38,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:38,779 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:38,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-14 00:09:39,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:09:39,006 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:39,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:39,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1738944107, now seen corresponding path program 1 times [2022-07-14 00:09:39,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:39,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115022881] [2022-07-14 00:09:39,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:39,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:09:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 00:09:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 00:09:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:09:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 00:09:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-14 00:09:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 00:09:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-14 00:09:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-14 00:09:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-14 00:09:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-14 00:09:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-14 00:09:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-14 00:09:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-14 00:09:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-14 00:09:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-14 00:09:39,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:39,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115022881] [2022-07-14 00:09:39,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115022881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:39,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:09:39,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 00:09:39,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781358033] [2022-07-14 00:09:39,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:39,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 00:09:39,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:39,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 00:09:39,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:09:39,335 INFO L87 Difference]: Start difference. First operand 8221 states and 11033 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-14 00:09:42,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:42,299 INFO L93 Difference]: Finished difference Result 10569 states and 14249 transitions. [2022-07-14 00:09:42,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-14 00:09:42,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 201 [2022-07-14 00:09:42,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:42,323 INFO L225 Difference]: With dead ends: 10569 [2022-07-14 00:09:42,323 INFO L226 Difference]: Without dead ends: 10566 [2022-07-14 00:09:42,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-07-14 00:09:42,330 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 1209 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 968 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 2311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 968 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:42,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 2802 Invalid, 2311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [968 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-14 00:09:42,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10566 states. [2022-07-14 00:09:43,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10566 to 10245. [2022-07-14 00:09:43,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10245 states, 7972 states have (on average 1.3153537380832916) internal successors, (10486), 8057 states have internal predecessors, (10486), 1606 states have call successors, (1606), 648 states have call predecessors, (1606), 666 states have return successors, (1670), 1539 states have call predecessors, (1670), 1604 states have call successors, (1670) [2022-07-14 00:09:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10245 states to 10245 states and 13762 transitions. [2022-07-14 00:09:43,464 INFO L78 Accepts]: Start accepts. Automaton has 10245 states and 13762 transitions. Word has length 201 [2022-07-14 00:09:43,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:43,465 INFO L495 AbstractCegarLoop]: Abstraction has 10245 states and 13762 transitions. [2022-07-14 00:09:43,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-14 00:09:43,465 INFO L276 IsEmpty]: Start isEmpty. Operand 10245 states and 13762 transitions. [2022-07-14 00:09:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-14 00:09:43,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:43,504 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:43,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-14 00:09:43,505 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:43,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:43,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1257863849, now seen corresponding path program 1 times [2022-07-14 00:09:43,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:43,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765486171] [2022-07-14 00:09:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:43,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:09:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 00:09:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 00:09:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:09:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 00:09:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-14 00:09:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 00:09:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-14 00:09:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-14 00:09:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-14 00:09:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-14 00:09:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-14 00:09:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-14 00:09:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-14 00:09:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-14 00:09:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-14 00:09:43,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:43,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765486171] [2022-07-14 00:09:43,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765486171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:43,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:09:43,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-14 00:09:43,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717512271] [2022-07-14 00:09:43,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:43,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 00:09:43,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:43,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 00:09:43,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:09:43,870 INFO L87 Difference]: Start difference. First operand 10245 states and 13762 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 7 states have internal predecessors, (125), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-14 00:09:47,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:47,446 INFO L93 Difference]: Finished difference Result 30635 states and 43564 transitions. [2022-07-14 00:09:47,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-14 00:09:47,447 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 7 states have internal predecessors, (125), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 201 [2022-07-14 00:09:47,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:47,516 INFO L225 Difference]: With dead ends: 30635 [2022-07-14 00:09:47,516 INFO L226 Difference]: Without dead ends: 22302 [2022-07-14 00:09:47,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-07-14 00:09:47,536 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 1569 mSDsluCounter, 4995 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 6040 SdHoareTripleChecker+Invalid, 2453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:47,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 6040 Invalid, 2453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [667 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-14 00:09:47,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22302 states. [2022-07-14 00:09:48,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22302 to 9402. [2022-07-14 00:09:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9402 states, 7347 states have (on average 1.3106029671974955) internal successors, (9629), 7431 states have internal predecessors, (9629), 1431 states have call successors, (1431), 606 states have call predecessors, (1431), 623 states have return successors, (1494), 1364 states have call predecessors, (1494), 1429 states have call successors, (1494) [2022-07-14 00:09:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9402 states to 9402 states and 12554 transitions. [2022-07-14 00:09:48,434 INFO L78 Accepts]: Start accepts. Automaton has 9402 states and 12554 transitions. Word has length 201 [2022-07-14 00:09:48,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:48,435 INFO L495 AbstractCegarLoop]: Abstraction has 9402 states and 12554 transitions. [2022-07-14 00:09:48,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 7 states have internal predecessors, (125), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-14 00:09:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand 9402 states and 12554 transitions. [2022-07-14 00:09:48,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-07-14 00:09:48,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:48,445 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:48,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-14 00:09:48,446 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:48,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:48,446 INFO L85 PathProgramCache]: Analyzing trace with hash -837594746, now seen corresponding path program 1 times [2022-07-14 00:09:48,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:48,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279186545] [2022-07-14 00:09:48,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:48,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:09:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 00:09:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 00:09:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:09:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 00:09:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-14 00:09:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 00:09:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-14 00:09:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-14 00:09:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-14 00:09:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-14 00:09:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:09:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:09:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:09:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:09:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-14 00:09:48,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:48,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279186545] [2022-07-14 00:09:48,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279186545] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:09:48,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583893735] [2022-07-14 00:09:48,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:48,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:09:48,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:09:48,707 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:09:48,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 00:09:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:49,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1872 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-14 00:09:49,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:09:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-14 00:09:49,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:09:49,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583893735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:49,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:09:49,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2022-07-14 00:09:49,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752661951] [2022-07-14 00:09:49,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:49,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 00:09:49,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:49,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 00:09:49,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-07-14 00:09:49,338 INFO L87 Difference]: Start difference. First operand 9402 states and 12554 transitions. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-14 00:09:52,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:52,287 INFO L93 Difference]: Finished difference Result 26815 states and 37000 transitions. [2022-07-14 00:09:52,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-14 00:09:52,288 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 223 [2022-07-14 00:09:52,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:52,354 INFO L225 Difference]: With dead ends: 26815 [2022-07-14 00:09:52,354 INFO L226 Difference]: Without dead ends: 22711 [2022-07-14 00:09:52,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2022-07-14 00:09:52,378 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 3152 mSDsluCounter, 4059 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3171 SdHoareTripleChecker+Valid, 4987 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:52,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3171 Valid, 4987 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-14 00:09:52,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22711 states. [2022-07-14 00:09:53,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22711 to 10652. [2022-07-14 00:09:53,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10652 states, 8370 states have (on average 1.3132616487455198) internal successors, (10992), 8487 states have internal predecessors, (10992), 1577 states have call successors, (1577), 680 states have call predecessors, (1577), 704 states have return successors, (1661), 1484 states have call predecessors, (1661), 1575 states have call successors, (1661) [2022-07-14 00:09:53,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10652 states to 10652 states and 14230 transitions. [2022-07-14 00:09:53,543 INFO L78 Accepts]: Start accepts. Automaton has 10652 states and 14230 transitions. Word has length 223 [2022-07-14 00:09:53,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:53,544 INFO L495 AbstractCegarLoop]: Abstraction has 10652 states and 14230 transitions. [2022-07-14 00:09:53,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-14 00:09:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 10652 states and 14230 transitions. [2022-07-14 00:09:53,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-14 00:09:53,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:53,558 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:53,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-14 00:09:53,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:09:53,759 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:53,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:53,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1451882372, now seen corresponding path program 1 times [2022-07-14 00:09:53,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:53,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214576475] [2022-07-14 00:09:53,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:53,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:09:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 00:09:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 00:09:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:09:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 00:09:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-14 00:09:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 00:09:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-14 00:09:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-14 00:09:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-14 00:09:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-14 00:09:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-14 00:09:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-14 00:09:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-14 00:09:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-14 00:09:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-14 00:09:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:09:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:09:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:09:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:09:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-14 00:09:54,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:54,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214576475] [2022-07-14 00:09:54,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214576475] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:09:54,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363557428] [2022-07-14 00:09:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:54,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:09:54,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:09:54,315 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:09:54,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-14 00:09:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:54,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-14 00:09:54,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:09:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-14 00:09:55,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:09:55,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363557428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:55,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:09:55,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2022-07-14 00:09:55,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758725504] [2022-07-14 00:09:55,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:55,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:09:55,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:55,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:09:55,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:09:55,216 INFO L87 Difference]: Start difference. First operand 10652 states and 14230 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-14 00:09:56,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:56,476 INFO L93 Difference]: Finished difference Result 14875 states and 19906 transitions. [2022-07-14 00:09:56,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:09:56,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 259 [2022-07-14 00:09:56,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:56,501 INFO L225 Difference]: With dead ends: 14875 [2022-07-14 00:09:56,502 INFO L226 Difference]: Without dead ends: 10758 [2022-07-14 00:09:56,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:09:56,516 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 588 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:56,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 874 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 00:09:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10758 states. [2022-07-14 00:09:57,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10758 to 10636. [2022-07-14 00:09:57,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10636 states, 8362 states have (on average 1.3126046400382683) internal successors, (10976), 8479 states have internal predecessors, (10976), 1569 states have call successors, (1569), 680 states have call predecessors, (1569), 704 states have return successors, (1653), 1476 states have call predecessors, (1653), 1567 states have call successors, (1653) [2022-07-14 00:09:57,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10636 states to 10636 states and 14198 transitions. [2022-07-14 00:09:57,421 INFO L78 Accepts]: Start accepts. Automaton has 10636 states and 14198 transitions. Word has length 259 [2022-07-14 00:09:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:57,422 INFO L495 AbstractCegarLoop]: Abstraction has 10636 states and 14198 transitions. [2022-07-14 00:09:57,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-14 00:09:57,422 INFO L276 IsEmpty]: Start isEmpty. Operand 10636 states and 14198 transitions. [2022-07-14 00:09:57,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-14 00:09:57,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:57,441 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:57,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-14 00:09:57,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-14 00:09:57,656 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:57,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash -699038396, now seen corresponding path program 1 times [2022-07-14 00:09:57,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:09:57,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710396772] [2022-07-14 00:09:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:57,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:09:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:09:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:09:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:09:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:09:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:09:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 00:09:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 00:09:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 00:09:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:09:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 00:09:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-14 00:09:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 00:09:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-14 00:09:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-14 00:09:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-14 00:09:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-14 00:09:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-14 00:09:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-14 00:09:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-14 00:09:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-14 00:09:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-14 00:09:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:09:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:09:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:09:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:09:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:09:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:09:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-14 00:09:57,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:09:57,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710396772] [2022-07-14 00:09:57,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710396772] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:09:57,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309628739] [2022-07-14 00:09:57,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:57,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:09:57,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:09:57,981 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:09:57,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-14 00:09:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:58,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-14 00:09:58,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:09:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-14 00:09:58,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:09:58,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309628739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:58,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:09:58,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 18 [2022-07-14 00:09:58,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387281416] [2022-07-14 00:09:58,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:58,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 00:09:58,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:09:58,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 00:09:58,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-07-14 00:09:58,807 INFO L87 Difference]: Start difference. First operand 10636 states and 14198 transitions. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-14 00:10:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:01,236 INFO L93 Difference]: Finished difference Result 30134 states and 41520 transitions. [2022-07-14 00:10:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 00:10:01,236 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) Word has length 259 [2022-07-14 00:10:01,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:01,288 INFO L225 Difference]: With dead ends: 30134 [2022-07-14 00:10:01,288 INFO L226 Difference]: Without dead ends: 19534 [2022-07-14 00:10:01,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-07-14 00:10:01,309 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 1150 mSDsluCounter, 3618 mSDsCounter, 0 mSdLazyCounter, 1977 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:01,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 4366 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1977 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-14 00:10:01,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19534 states. [2022-07-14 00:10:02,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19534 to 10949. [2022-07-14 00:10:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10949 states, 8616 states have (on average 1.30338904363974) internal successors, (11230), 8714 states have internal predecessors, (11230), 1569 states have call successors, (1569), 680 states have call predecessors, (1569), 763 states have return successors, (1771), 1554 states have call predecessors, (1771), 1567 states have call successors, (1771) [2022-07-14 00:10:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10949 states to 10949 states and 14570 transitions. [2022-07-14 00:10:02,335 INFO L78 Accepts]: Start accepts. Automaton has 10949 states and 14570 transitions. Word has length 259 [2022-07-14 00:10:02,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:02,336 INFO L495 AbstractCegarLoop]: Abstraction has 10949 states and 14570 transitions. [2022-07-14 00:10:02,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-14 00:10:02,336 INFO L276 IsEmpty]: Start isEmpty. Operand 10949 states and 14570 transitions. [2022-07-14 00:10:02,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-07-14 00:10:02,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:02,356 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:10:02,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-14 00:10:02,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:02,561 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:02,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:02,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1824717166, now seen corresponding path program 2 times [2022-07-14 00:10:02,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:02,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406269098] [2022-07-14 00:10:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:02,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:10:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:10:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:10:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:10:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 00:10:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-14 00:10:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-14 00:10:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-14 00:10:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-14 00:10:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-14 00:10:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-14 00:10:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-14 00:10:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-14 00:10:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-14 00:10:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-14 00:10:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-14 00:10:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-14 00:10:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-14 00:10:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-14 00:10:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:10:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:10:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:10:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:10:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-14 00:10:02,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:02,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406269098] [2022-07-14 00:10:02,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406269098] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:10:02,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793988488] [2022-07-14 00:10:02,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 00:10:02,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:02,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:10:02,857 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:10:02,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-14 00:10:03,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 00:10:03,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:10:03,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2163 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-14 00:10:03,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:10:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-14 00:10:03,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:10:03,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793988488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:10:03,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:10:03,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2022-07-14 00:10:03,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947020709] [2022-07-14 00:10:03,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:10:03,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:10:03,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:03,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:10:03,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-14 00:10:03,641 INFO L87 Difference]: Start difference. First operand 10949 states and 14570 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-14 00:10:04,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:04,701 INFO L93 Difference]: Finished difference Result 21940 states and 29173 transitions. [2022-07-14 00:10:04,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 00:10:04,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 265 [2022-07-14 00:10:04,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:04,746 INFO L225 Difference]: With dead ends: 21940 [2022-07-14 00:10:04,746 INFO L226 Difference]: Without dead ends: 10949 [2022-07-14 00:10:04,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-14 00:10:04,770 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 423 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:04,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1436 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 00:10:04,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10949 states. [2022-07-14 00:10:05,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10949 to 10949. [2022-07-14 00:10:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10949 states, 8616 states have (on average 1.30338904363974) internal successors, (11230), 8714 states have internal predecessors, (11230), 1569 states have call successors, (1569), 680 states have call predecessors, (1569), 763 states have return successors, (1732), 1554 states have call predecessors, (1732), 1567 states have call successors, (1732) [2022-07-14 00:10:05,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10949 states to 10949 states and 14531 transitions. [2022-07-14 00:10:05,766 INFO L78 Accepts]: Start accepts. Automaton has 10949 states and 14531 transitions. Word has length 265 [2022-07-14 00:10:05,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:05,766 INFO L495 AbstractCegarLoop]: Abstraction has 10949 states and 14531 transitions. [2022-07-14 00:10:05,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-14 00:10:05,767 INFO L276 IsEmpty]: Start isEmpty. Operand 10949 states and 14531 transitions. [2022-07-14 00:10:05,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-14 00:10:05,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:05,791 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:10:05,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-14 00:10:06,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:06,052 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:06,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:06,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2127937476, now seen corresponding path program 1 times [2022-07-14 00:10:06,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:06,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249450954] [2022-07-14 00:10:06,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:06,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:10:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-14 00:10:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:10:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:10:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 00:10:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-14 00:10:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-14 00:10:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-14 00:10:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-14 00:10:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-14 00:10:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-14 00:10:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-14 00:10:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-14 00:10:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-14 00:10:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-14 00:10:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-14 00:10:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-14 00:10:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-14 00:10:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-14 00:10:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:10:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:10:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:10:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:10:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-14 00:10:06,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:06,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249450954] [2022-07-14 00:10:06,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249450954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:10:06,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:10:06,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 00:10:06,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582897809] [2022-07-14 00:10:06,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:10:06,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 00:10:06,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:06,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 00:10:06,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:10:06,354 INFO L87 Difference]: Start difference. First operand 10949 states and 14531 transitions. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-14 00:10:07,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:07,917 INFO L93 Difference]: Finished difference Result 21983 states and 29230 transitions. [2022-07-14 00:10:07,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:10:07,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 271 [2022-07-14 00:10:07,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:07,947 INFO L225 Difference]: With dead ends: 21983 [2022-07-14 00:10:07,948 INFO L226 Difference]: Without dead ends: 11055 [2022-07-14 00:10:07,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:10:07,961 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 159 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:07,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1734 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 00:10:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11055 states. [2022-07-14 00:10:08,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11055 to 10950. [2022-07-14 00:10:08,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10950 states, 8617 states have (on average 1.303353835441569) internal successors, (11231), 8715 states have internal predecessors, (11231), 1569 states have call successors, (1569), 680 states have call predecessors, (1569), 763 states have return successors, (1732), 1554 states have call predecessors, (1732), 1567 states have call successors, (1732) [2022-07-14 00:10:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10950 states to 10950 states and 14532 transitions. [2022-07-14 00:10:08,872 INFO L78 Accepts]: Start accepts. Automaton has 10950 states and 14532 transitions. Word has length 271 [2022-07-14 00:10:08,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:08,873 INFO L495 AbstractCegarLoop]: Abstraction has 10950 states and 14532 transitions. [2022-07-14 00:10:08,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-14 00:10:08,873 INFO L276 IsEmpty]: Start isEmpty. Operand 10950 states and 14532 transitions. [2022-07-14 00:10:08,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-14 00:10:08,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:08,887 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:10:08,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-14 00:10:08,887 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:08,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:08,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1084248439, now seen corresponding path program 1 times [2022-07-14 00:10:08,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:08,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158971227] [2022-07-14 00:10:08,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:08,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:10:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:10:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-14 00:10:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-14 00:10:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:10:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-14 00:10:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-14 00:10:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-14 00:10:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-14 00:10:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-14 00:10:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-14 00:10:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-14 00:10:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-14 00:10:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-14 00:10:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-14 00:10:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-14 00:10:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-14 00:10:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-14 00:10:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-14 00:10:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:10:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:10:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:10:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:10:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-14 00:10:09,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:09,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158971227] [2022-07-14 00:10:09,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158971227] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:10:09,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147920467] [2022-07-14 00:10:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:09,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:09,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:10:09,188 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:10:09,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-14 00:10:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:09,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 2204 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 00:10:09,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:10:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-14 00:10:10,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:10:10,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147920467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:10:10,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:10:10,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-07-14 00:10:10,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132766941] [2022-07-14 00:10:10,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:10:10,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:10:10,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:10,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:10:10,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-14 00:10:10,054 INFO L87 Difference]: Start difference. First operand 10950 states and 14532 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 5 states have internal predecessors, (162), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-14 00:10:11,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:11,313 INFO L93 Difference]: Finished difference Result 15301 states and 20358 transitions. [2022-07-14 00:10:11,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 00:10:11,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 5 states have internal predecessors, (162), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 3 states have call successors, (30) Word has length 272 [2022-07-14 00:10:11,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:11,335 INFO L225 Difference]: With dead ends: 15301 [2022-07-14 00:10:11,335 INFO L226 Difference]: Without dead ends: 11080 [2022-07-14 00:10:11,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-14 00:10:11,344 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 593 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:11,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1827 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 00:10:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11080 states. [2022-07-14 00:10:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11080 to 10958. [2022-07-14 00:10:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10958 states, 8625 states have (on average 1.303072463768116) internal successors, (11239), 8723 states have internal predecessors, (11239), 1569 states have call successors, (1569), 680 states have call predecessors, (1569), 763 states have return successors, (1732), 1554 states have call predecessors, (1732), 1567 states have call successors, (1732) [2022-07-14 00:10:12,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10958 states to 10958 states and 14540 transitions. [2022-07-14 00:10:12,231 INFO L78 Accepts]: Start accepts. Automaton has 10958 states and 14540 transitions. Word has length 272 [2022-07-14 00:10:12,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:12,232 INFO L495 AbstractCegarLoop]: Abstraction has 10958 states and 14540 transitions. [2022-07-14 00:10:12,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 5 states have internal predecessors, (162), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-14 00:10:12,232 INFO L276 IsEmpty]: Start isEmpty. Operand 10958 states and 14540 transitions. [2022-07-14 00:10:12,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-14 00:10:12,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:12,247 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:10:12,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-14 00:10:12,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-14 00:10:12,461 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:12,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:12,461 INFO L85 PathProgramCache]: Analyzing trace with hash 644166751, now seen corresponding path program 1 times [2022-07-14 00:10:12,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:12,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982880498] [2022-07-14 00:10:12,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:12,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:10:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:10:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-14 00:10:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-14 00:10:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:10:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-14 00:10:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-14 00:10:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-14 00:10:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-14 00:10:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-14 00:10:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-14 00:10:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-14 00:10:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-14 00:10:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-14 00:10:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-14 00:10:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-14 00:10:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-14 00:10:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-14 00:10:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-14 00:10:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:10:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:10:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:10:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:10:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-07-14 00:10:12,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:12,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982880498] [2022-07-14 00:10:12,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982880498] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:10:12,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586360897] [2022-07-14 00:10:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:12,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:12,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:10:12,787 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:10:12,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-14 00:10:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:13,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 00:10:13,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:10:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-14 00:10:13,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:10:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-14 00:10:13,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586360897] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-14 00:10:13,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-14 00:10:13,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 5] total 13 [2022-07-14 00:10:13,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627443478] [2022-07-14 00:10:13,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:10:13,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:10:13,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:13,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:10:13,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-14 00:10:13,541 INFO L87 Difference]: Start difference. First operand 10958 states and 14540 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-14 00:10:14,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:14,701 INFO L93 Difference]: Finished difference Result 15171 states and 20168 transitions. [2022-07-14 00:10:14,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:10:14,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 273 [2022-07-14 00:10:14,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:14,720 INFO L225 Difference]: With dead ends: 15171 [2022-07-14 00:10:14,720 INFO L226 Difference]: Without dead ends: 10966 [2022-07-14 00:10:14,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-14 00:10:14,728 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 4 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:14,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1387 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 00:10:14,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10966 states. [2022-07-14 00:10:15,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10966 to 10966. [2022-07-14 00:10:15,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10966 states, 8633 states have (on average 1.3027916135758137) internal successors, (11247), 8731 states have internal predecessors, (11247), 1569 states have call successors, (1569), 680 states have call predecessors, (1569), 763 states have return successors, (1732), 1554 states have call predecessors, (1732), 1567 states have call successors, (1732) [2022-07-14 00:10:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10966 states to 10966 states and 14548 transitions. [2022-07-14 00:10:15,565 INFO L78 Accepts]: Start accepts. Automaton has 10966 states and 14548 transitions. Word has length 273 [2022-07-14 00:10:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:15,565 INFO L495 AbstractCegarLoop]: Abstraction has 10966 states and 14548 transitions. [2022-07-14 00:10:15,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-14 00:10:15,565 INFO L276 IsEmpty]: Start isEmpty. Operand 10966 states and 14548 transitions. [2022-07-14 00:10:15,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-14 00:10:15,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:15,578 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:10:15,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-14 00:10:15,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-14 00:10:15,778 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:15,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:15,779 INFO L85 PathProgramCache]: Analyzing trace with hash 878313927, now seen corresponding path program 1 times [2022-07-14 00:10:15,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:15,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751081689] [2022-07-14 00:10:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:15,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:15,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:15,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:15,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:15,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:10:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:15,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:10:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:15,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-14 00:10:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:15,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-14 00:10:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:15,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:15,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:10:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:15,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:15,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-14 00:10:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-14 00:10:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-14 00:10:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-14 00:10:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-14 00:10:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-14 00:10:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-14 00:10:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-14 00:10:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-14 00:10:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-14 00:10:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-14 00:10:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-14 00:10:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-14 00:10:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-14 00:10:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:10:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:10:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:10:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:10:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-14 00:10:16,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:16,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751081689] [2022-07-14 00:10:16,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751081689] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:10:16,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527677747] [2022-07-14 00:10:16,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:16,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:16,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:10:16,094 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:10:16,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-14 00:10:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:16,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 2318 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 00:10:16,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:10:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-14 00:10:16,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:10:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-14 00:10:17,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527677747] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:10:17,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:10:17,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 17 [2022-07-14 00:10:17,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232314803] [2022-07-14 00:10:17,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:10:17,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-14 00:10:17,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:17,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-14 00:10:17,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-07-14 00:10:17,021 INFO L87 Difference]: Start difference. First operand 10966 states and 14548 transitions. Second operand has 17 states, 17 states have (on average 14.941176470588236) internal successors, (254), 12 states have internal predecessors, (254), 4 states have call successors, (63), 7 states have call predecessors, (63), 3 states have return successors, (56), 2 states have call predecessors, (56), 4 states have call successors, (56) [2022-07-14 00:10:19,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:19,166 INFO L93 Difference]: Finished difference Result 22146 states and 29445 transitions. [2022-07-14 00:10:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 00:10:19,167 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.941176470588236) internal successors, (254), 12 states have internal predecessors, (254), 4 states have call successors, (63), 7 states have call predecessors, (63), 3 states have return successors, (56), 2 states have call predecessors, (56), 4 states have call successors, (56) Word has length 274 [2022-07-14 00:10:19,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:19,193 INFO L225 Difference]: With dead ends: 22146 [2022-07-14 00:10:19,193 INFO L226 Difference]: Without dead ends: 11170 [2022-07-14 00:10:19,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-07-14 00:10:19,211 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 487 mSDsluCounter, 4298 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 4965 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:19,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 4965 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-14 00:10:19,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11170 states. [2022-07-14 00:10:20,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11170 to 10975. [2022-07-14 00:10:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10975 states, 8642 states have (on average 1.302476278639204) internal successors, (11256), 8740 states have internal predecessors, (11256), 1569 states have call successors, (1569), 680 states have call predecessors, (1569), 763 states have return successors, (1732), 1554 states have call predecessors, (1732), 1567 states have call successors, (1732) [2022-07-14 00:10:20,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10975 states to 10975 states and 14557 transitions. [2022-07-14 00:10:20,067 INFO L78 Accepts]: Start accepts. Automaton has 10975 states and 14557 transitions. Word has length 274 [2022-07-14 00:10:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:20,068 INFO L495 AbstractCegarLoop]: Abstraction has 10975 states and 14557 transitions. [2022-07-14 00:10:20,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.941176470588236) internal successors, (254), 12 states have internal predecessors, (254), 4 states have call successors, (63), 7 states have call predecessors, (63), 3 states have return successors, (56), 2 states have call predecessors, (56), 4 states have call successors, (56) [2022-07-14 00:10:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 10975 states and 14557 transitions. [2022-07-14 00:10:20,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-07-14 00:10:20,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:20,081 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:10:20,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-14 00:10:20,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-14 00:10:20,285 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:20,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:20,285 INFO L85 PathProgramCache]: Analyzing trace with hash -388993438, now seen corresponding path program 2 times [2022-07-14 00:10:20,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:20,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269320969] [2022-07-14 00:10:20,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:20,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-14 00:10:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-14 00:10:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 00:10:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:10:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-14 00:10:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-14 00:10:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 00:10:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-14 00:10:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-14 00:10:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-14 00:10:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-14 00:10:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-14 00:10:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-14 00:10:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-14 00:10:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-14 00:10:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-14 00:10:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-14 00:10:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-14 00:10:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-14 00:10:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:10:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:10:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:10:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:10:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-14 00:10:20,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:20,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269320969] [2022-07-14 00:10:20,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269320969] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:10:20,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118042655] [2022-07-14 00:10:20,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 00:10:20,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:20,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:10:20,672 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:10:20,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-14 00:10:21,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 00:10:21,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:10:21,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2428 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-14 00:10:21,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:10:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-14 00:10:21,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:10:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-07-14 00:10:21,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118042655] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:10:21,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:10:21,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 21 [2022-07-14 00:10:21,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74064873] [2022-07-14 00:10:21,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:10:21,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-14 00:10:21,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:21,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-14 00:10:21,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-07-14 00:10:21,835 INFO L87 Difference]: Start difference. First operand 10975 states and 14557 transitions. Second operand has 21 states, 21 states have (on average 12.285714285714286) internal successors, (258), 16 states have internal predecessors, (258), 4 states have call successors, (63), 7 states have call predecessors, (63), 3 states have return successors, (56), 2 states have call predecessors, (56), 4 states have call successors, (56) [2022-07-14 00:10:24,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:24,797 INFO L93 Difference]: Finished difference Result 22163 states and 29462 transitions. [2022-07-14 00:10:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-14 00:10:24,797 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.285714285714286) internal successors, (258), 16 states have internal predecessors, (258), 4 states have call successors, (63), 7 states have call predecessors, (63), 3 states have return successors, (56), 2 states have call predecessors, (56), 4 states have call successors, (56) Word has length 276 [2022-07-14 00:10:24,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:24,825 INFO L225 Difference]: With dead ends: 22163 [2022-07-14 00:10:24,825 INFO L226 Difference]: Without dead ends: 11179 [2022-07-14 00:10:24,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2022-07-14 00:10:24,842 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 379 mSDsluCounter, 6552 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 7219 SdHoareTripleChecker+Invalid, 2732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:24,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 7219 Invalid, 2732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-14 00:10:24,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11179 states. [2022-07-14 00:10:25,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11179 to 10984. [2022-07-14 00:10:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10984 states, 8651 states have (on average 1.3021615998150502) internal successors, (11265), 8749 states have internal predecessors, (11265), 1569 states have call successors, (1569), 680 states have call predecessors, (1569), 763 states have return successors, (1732), 1554 states have call predecessors, (1732), 1567 states have call successors, (1732) [2022-07-14 00:10:25,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10984 states to 10984 states and 14566 transitions. [2022-07-14 00:10:25,745 INFO L78 Accepts]: Start accepts. Automaton has 10984 states and 14566 transitions. Word has length 276 [2022-07-14 00:10:25,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:25,746 INFO L495 AbstractCegarLoop]: Abstraction has 10984 states and 14566 transitions. [2022-07-14 00:10:25,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.285714285714286) internal successors, (258), 16 states have internal predecessors, (258), 4 states have call successors, (63), 7 states have call predecessors, (63), 3 states have return successors, (56), 2 states have call predecessors, (56), 4 states have call successors, (56) [2022-07-14 00:10:25,746 INFO L276 IsEmpty]: Start isEmpty. Operand 10984 states and 14566 transitions. [2022-07-14 00:10:25,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-14 00:10:25,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:25,760 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:10:25,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-14 00:10:25,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:25,976 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:25,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2139645977, now seen corresponding path program 3 times [2022-07-14 00:10:25,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:25,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77868457] [2022-07-14 00:10:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:25,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-14 00:10:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:10:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:10:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-14 00:10:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-14 00:10:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-14 00:10:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-14 00:10:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-14 00:10:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-14 00:10:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-14 00:10:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-14 00:10:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-14 00:10:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-14 00:10:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-14 00:10:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-14 00:10:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-14 00:10:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-14 00:10:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-14 00:10:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-14 00:10:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:10:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:10:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:10:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:10:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,366 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-14 00:10:26,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:26,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77868457] [2022-07-14 00:10:26,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77868457] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:10:26,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540878858] [2022-07-14 00:10:26,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 00:10:26,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:26,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:10:26,368 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:10:26,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-14 00:10:27,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-14 00:10:27,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:10:27,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 2378 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 00:10:27,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:10:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-14 00:10:27,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:10:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-07-14 00:10:27,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540878858] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:10:27,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:10:27,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 18 [2022-07-14 00:10:27,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393046214] [2022-07-14 00:10:27,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:10:27,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-14 00:10:27,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:27,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-14 00:10:27,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-14 00:10:27,331 INFO L87 Difference]: Start difference. First operand 10984 states and 14566 transitions. Second operand has 18 states, 18 states have (on average 14.055555555555555) internal successors, (253), 13 states have internal predecessors, (253), 4 states have call successors, (63), 7 states have call predecessors, (63), 3 states have return successors, (56), 2 states have call predecessors, (56), 4 states have call successors, (56) [2022-07-14 00:10:29,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:29,768 INFO L93 Difference]: Finished difference Result 22164 states and 29455 transitions. [2022-07-14 00:10:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-14 00:10:29,769 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.055555555555555) internal successors, (253), 13 states have internal predecessors, (253), 4 states have call successors, (63), 7 states have call predecessors, (63), 3 states have return successors, (56), 2 states have call predecessors, (56), 4 states have call successors, (56) Word has length 278 [2022-07-14 00:10:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:29,793 INFO L225 Difference]: With dead ends: 22164 [2022-07-14 00:10:29,794 INFO L226 Difference]: Without dead ends: 11188 [2022-07-14 00:10:29,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-07-14 00:10:29,811 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 651 mSDsluCounter, 4891 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 5559 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:29,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 5559 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-14 00:10:29,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11188 states. [2022-07-14 00:10:30,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11188 to 10993. [2022-07-14 00:10:30,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10993 states, 8660 states have (on average 1.3018475750577367) internal successors, (11274), 8758 states have internal predecessors, (11274), 1569 states have call successors, (1569), 680 states have call predecessors, (1569), 763 states have return successors, (1732), 1554 states have call predecessors, (1732), 1567 states have call successors, (1732) [2022-07-14 00:10:30,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10993 states to 10993 states and 14575 transitions. [2022-07-14 00:10:30,912 INFO L78 Accepts]: Start accepts. Automaton has 10993 states and 14575 transitions. Word has length 278 [2022-07-14 00:10:30,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:30,913 INFO L495 AbstractCegarLoop]: Abstraction has 10993 states and 14575 transitions. [2022-07-14 00:10:30,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.055555555555555) internal successors, (253), 13 states have internal predecessors, (253), 4 states have call successors, (63), 7 states have call predecessors, (63), 3 states have return successors, (56), 2 states have call predecessors, (56), 4 states have call successors, (56) [2022-07-14 00:10:30,913 INFO L276 IsEmpty]: Start isEmpty. Operand 10993 states and 14575 transitions. [2022-07-14 00:10:30,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-14 00:10:30,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:30,927 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:10:30,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-14 00:10:31,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:31,131 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:31,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:31,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2079942916, now seen corresponding path program 4 times [2022-07-14 00:10:31,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:31,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813055151] [2022-07-14 00:10:31,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:31,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-14 00:10:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-14 00:10:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:10:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-14 00:10:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-14 00:10:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-14 00:10:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-14 00:10:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-14 00:10:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-14 00:10:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-14 00:10:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-14 00:10:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-14 00:10:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-14 00:10:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-14 00:10:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-14 00:10:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-14 00:10:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-14 00:10:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-14 00:10:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-14 00:10:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:10:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:10:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:10:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:10:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-14 00:10:31,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:31,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813055151] [2022-07-14 00:10:31,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813055151] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:10:31,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833297994] [2022-07-14 00:10:31,639 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 00:10:31,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:10:31,641 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:10:31,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-14 00:10:32,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 00:10:32,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:10:32,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 2572 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-14 00:10:32,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:10:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 47 proven. 16 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-14 00:10:32,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:10:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-14 00:10:33,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833297994] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:10:33,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:10:33,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 8] total 25 [2022-07-14 00:10:33,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270813000] [2022-07-14 00:10:33,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:10:33,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-14 00:10:33,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:33,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-14 00:10:33,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2022-07-14 00:10:33,022 INFO L87 Difference]: Start difference. First operand 10993 states and 14575 transitions. Second operand has 25 states, 25 states have (on average 8.04) internal successors, (201), 20 states have internal predecessors, (201), 4 states have call successors, (58), 7 states have call predecessors, (58), 3 states have return successors, (44), 2 states have call predecessors, (44), 4 states have call successors, (44) [2022-07-14 00:10:37,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:37,106 INFO L93 Difference]: Finished difference Result 15449 states and 20568 transitions. [2022-07-14 00:10:37,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-14 00:10:37,106 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.04) internal successors, (201), 20 states have internal predecessors, (201), 4 states have call successors, (58), 7 states have call predecessors, (58), 3 states have return successors, (44), 2 states have call predecessors, (44), 4 states have call successors, (44) Word has length 280 [2022-07-14 00:10:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:37,127 INFO L225 Difference]: With dead ends: 15449 [2022-07-14 00:10:37,127 INFO L226 Difference]: Without dead ends: 11196 [2022-07-14 00:10:37,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 608 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=1098, Unknown=0, NotChecked=0, Total=1260 [2022-07-14 00:10:37,136 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 611 mSDsluCounter, 8860 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 9525 SdHoareTripleChecker+Invalid, 3600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:37,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 9525 Invalid, 3600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-14 00:10:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11196 states. [2022-07-14 00:10:38,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11196 to 11001. [2022-07-14 00:10:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11001 states, 8668 states have (on average 1.3015689893862483) internal successors, (11282), 8766 states have internal predecessors, (11282), 1569 states have call successors, (1569), 680 states have call predecessors, (1569), 763 states have return successors, (1732), 1554 states have call predecessors, (1732), 1567 states have call successors, (1732) [2022-07-14 00:10:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11001 states to 11001 states and 14583 transitions. [2022-07-14 00:10:38,062 INFO L78 Accepts]: Start accepts. Automaton has 11001 states and 14583 transitions. Word has length 280 [2022-07-14 00:10:38,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:38,062 INFO L495 AbstractCegarLoop]: Abstraction has 11001 states and 14583 transitions. [2022-07-14 00:10:38,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.04) internal successors, (201), 20 states have internal predecessors, (201), 4 states have call successors, (58), 7 states have call predecessors, (58), 3 states have return successors, (44), 2 states have call predecessors, (44), 4 states have call successors, (44) [2022-07-14 00:10:38,063 INFO L276 IsEmpty]: Start isEmpty. Operand 11001 states and 14583 transitions. [2022-07-14 00:10:38,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-07-14 00:10:38,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:38,075 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:10:38,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-14 00:10:38,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-07-14 00:10:38,276 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash -385421116, now seen corresponding path program 5 times [2022-07-14 00:10:38,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:38,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739644127] [2022-07-14 00:10:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:38,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-14 00:10:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-14 00:10:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:10:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-14 00:10:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-14 00:10:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-14 00:10:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-14 00:10:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-14 00:10:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-14 00:10:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-14 00:10:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-14 00:10:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-14 00:10:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-14 00:10:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-14 00:10:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-14 00:10:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-14 00:10:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-14 00:10:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-14 00:10:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-14 00:10:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:10:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:10:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:10:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:10:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-14 00:10:38,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:38,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739644127] [2022-07-14 00:10:38,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739644127] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:10:38,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130361020] [2022-07-14 00:10:38,791 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 00:10:38,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:38,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:10:38,793 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:10:38,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-14 00:11:58,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-07-14 00:11:58,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:11:58,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 00:11:58,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:11:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 49 proven. 11 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-14 00:11:58,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:11:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-14 00:11:59,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130361020] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:11:59,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:11:59,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 25 [2022-07-14 00:11:59,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739218321] [2022-07-14 00:11:59,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:11:59,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-14 00:11:59,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:11:59,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-14 00:11:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-07-14 00:11:59,030 INFO L87 Difference]: Start difference. First operand 11001 states and 14583 transitions. Second operand has 25 states, 25 states have (on average 7.96) internal successors, (199), 20 states have internal predecessors, (199), 3 states have call successors, (57), 7 states have call predecessors, (57), 2 states have return successors, (43), 2 states have call predecessors, (43), 3 states have call successors, (43) [2022-07-14 00:12:04,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:12:04,704 INFO L93 Difference]: Finished difference Result 15561 states and 20712 transitions. [2022-07-14 00:12:04,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-14 00:12:04,706 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.96) internal successors, (199), 20 states have internal predecessors, (199), 3 states have call successors, (57), 7 states have call predecessors, (57), 2 states have return successors, (43), 2 states have call predecessors, (43), 3 states have call successors, (43) Word has length 281 [2022-07-14 00:12:04,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:12:04,741 INFO L225 Difference]: With dead ends: 15561 [2022-07-14 00:12:04,742 INFO L226 Difference]: Without dead ends: 11236 [2022-07-14 00:12:04,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 612 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=402, Invalid=1950, Unknown=0, NotChecked=0, Total=2352 [2022-07-14 00:12:04,758 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 417 mSDsluCounter, 7507 mSDsCounter, 0 mSdLazyCounter, 2741 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 8174 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 2741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:12:04,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 8174 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 2741 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-14 00:12:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11236 states. [2022-07-14 00:12:06,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11236 to 11041. [2022-07-14 00:12:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11041 states, 8708 states have (on average 1.3001837390904916) internal successors, (11322), 8806 states have internal predecessors, (11322), 1569 states have call successors, (1569), 680 states have call predecessors, (1569), 763 states have return successors, (1732), 1554 states have call predecessors, (1732), 1567 states have call successors, (1732) [2022-07-14 00:12:06,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11041 states to 11041 states and 14623 transitions. [2022-07-14 00:12:06,170 INFO L78 Accepts]: Start accepts. Automaton has 11041 states and 14623 transitions. Word has length 281 [2022-07-14 00:12:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:12:06,171 INFO L495 AbstractCegarLoop]: Abstraction has 11041 states and 14623 transitions. [2022-07-14 00:12:06,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.96) internal successors, (199), 20 states have internal predecessors, (199), 3 states have call successors, (57), 7 states have call predecessors, (57), 2 states have return successors, (43), 2 states have call predecessors, (43), 3 states have call successors, (43) [2022-07-14 00:12:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 11041 states and 14623 transitions. [2022-07-14 00:12:06,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-07-14 00:12:06,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:12:06,191 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:12:06,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-14 00:12:06,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:12:06,408 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:12:06,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:12:06,409 INFO L85 PathProgramCache]: Analyzing trace with hash 124932356, now seen corresponding path program 6 times [2022-07-14 00:12:06,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:12:06,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68306865] [2022-07-14 00:12:06,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:12:06,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:12:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:12:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:12:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:12:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-14 00:12:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-14 00:12:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:12:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-14 00:12:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:12:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-14 00:12:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:12:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:12:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-14 00:12:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-14 00:12:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:12:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-14 00:12:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-14 00:12:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-14 00:12:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-14 00:12:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-14 00:12:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-14 00:12:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-14 00:12:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-14 00:12:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-14 00:12:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-14 00:12:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-14 00:12:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-07-14 00:12:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:12:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:12:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 00:12:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:12:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-14 00:12:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:12:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:12:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-14 00:12:07,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:12:07,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68306865] [2022-07-14 00:12:07,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68306865] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:12:07,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500569164] [2022-07-14 00:12:07,625 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-14 00:12:07,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:12:07,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:12:07,626 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:12:07,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process