./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 03:12:13,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 03:12:13,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 03:12:13,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 03:12:13,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 03:12:13,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 03:12:13,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 03:12:13,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 03:12:13,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 03:12:13,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 03:12:13,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 03:12:13,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 03:12:13,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 03:12:13,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 03:12:13,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 03:12:13,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 03:12:13,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 03:12:13,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 03:12:13,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 03:12:13,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 03:12:13,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 03:12:13,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 03:12:13,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 03:12:13,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 03:12:13,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 03:12:13,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 03:12:13,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 03:12:13,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 03:12:13,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 03:12:13,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 03:12:13,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 03:12:13,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 03:12:13,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 03:12:13,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 03:12:13,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 03:12:13,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 03:12:13,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 03:12:13,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 03:12:13,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 03:12:13,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 03:12:13,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 03:12:13,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 03:12:13,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 03:12:13,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 03:12:13,173 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 03:12:13,173 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 03:12:13,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 03:12:13,174 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 03:12:13,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 03:12:13,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 03:12:13,174 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 03:12:13,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 03:12:13,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 03:12:13,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 03:12:13,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 03:12:13,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 03:12:13,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 03:12:13,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 03:12:13,176 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 03:12:13,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 03:12:13,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 03:12:13,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 03:12:13,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 03:12:13,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 03:12:13,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 03:12:13,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 03:12:13,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 03:12:13,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 03:12:13,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 03:12:13,178 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 03:12:13,178 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 03:12:13,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 03:12:13,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 03:12:13,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 [2021-12-18 03:12:13,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 03:12:13,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 03:12:13,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 03:12:13,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 03:12:13,430 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 03:12:13,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-12-18 03:12:13,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a32448b1e/71d0813f732c40b9bbc245519a2de312/FLAG61a184986 [2021-12-18 03:12:14,057 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 03:12:14,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-12-18 03:12:14,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a32448b1e/71d0813f732c40b9bbc245519a2de312/FLAG61a184986 [2021-12-18 03:12:14,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a32448b1e/71d0813f732c40b9bbc245519a2de312 [2021-12-18 03:12:14,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 03:12:14,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 03:12:14,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 03:12:14,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 03:12:14,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 03:12:14,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:12:14" (1/1) ... [2021-12-18 03:12:14,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a05f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:12:14, skipping insertion in model container [2021-12-18 03:12:14,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:12:14" (1/1) ... [2021-12-18 03:12:14,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 03:12:14,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 03:12:15,298 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2021-12-18 03:12:15,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 03:12:15,481 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 03:12:15,650 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2021-12-18 03:12:15,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 03:12:15,824 INFO L208 MainTranslator]: Completed translation [2021-12-18 03:12:15,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:12:15 WrapperNode [2021-12-18 03:12:15,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 03:12:15,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 03:12:15,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 03:12:15,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 03:12:15,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:12:15" (1/1) ... [2021-12-18 03:12:15,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:12:15" (1/1) ... [2021-12-18 03:12:16,106 INFO L137 Inliner]: procedures = 133, calls = 4943, calls flagged for inlining = 57, calls inlined = 51, statements flattened = 6018 [2021-12-18 03:12:16,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 03:12:16,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 03:12:16,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 03:12:16,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 03:12:16,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:12:15" (1/1) ... [2021-12-18 03:12:16,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:12:15" (1/1) ... [2021-12-18 03:12:16,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:12:15" (1/1) ... [2021-12-18 03:12:16,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:12:15" (1/1) ... [2021-12-18 03:12:16,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:12:15" (1/1) ... [2021-12-18 03:12:16,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:12:15" (1/1) ... [2021-12-18 03:12:16,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:12:15" (1/1) ... [2021-12-18 03:12:16,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 03:12:16,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 03:12:16,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 03:12:16,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 03:12:16,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:12:15" (1/1) ... [2021-12-18 03:12:16,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 03:12:16,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:12:16,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 03:12:16,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 03:12:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2021-12-18 03:12:16,405 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2021-12-18 03:12:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-18 03:12:16,405 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-18 03:12:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2021-12-18 03:12:16,405 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2021-12-18 03:12:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-18 03:12:16,406 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-18 03:12:16,406 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2021-12-18 03:12:16,406 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2021-12-18 03:12:16,406 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2021-12-18 03:12:16,406 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2021-12-18 03:12:16,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 03:12:16,406 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2021-12-18 03:12:16,406 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2021-12-18 03:12:16,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 03:12:16,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 03:12:16,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 03:12:16,407 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 03:12:16,407 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 03:12:16,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 03:12:16,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 03:12:16,407 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-18 03:12:16,407 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-18 03:12:16,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2021-12-18 03:12:16,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2021-12-18 03:12:16,408 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2021-12-18 03:12:16,408 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2021-12-18 03:12:16,408 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2021-12-18 03:12:16,408 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2021-12-18 03:12:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 03:12:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2021-12-18 03:12:16,451 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2021-12-18 03:12:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-18 03:12:16,451 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-18 03:12:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 03:12:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 03:12:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 03:12:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2021-12-18 03:12:16,452 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2021-12-18 03:12:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 03:12:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 03:12:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2021-12-18 03:12:16,452 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2021-12-18 03:12:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 03:12:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2021-12-18 03:12:16,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2021-12-18 03:12:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-12-18 03:12:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-18 03:12:16,452 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-18 03:12:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-18 03:12:16,452 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-18 03:12:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 03:12:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-18 03:12:16,452 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-18 03:12:16,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 03:12:16,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 03:12:16,453 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2021-12-18 03:12:16,453 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2021-12-18 03:12:16,453 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-18 03:12:16,453 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-18 03:12:16,657 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 03:12:16,658 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 03:12:22,169 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 03:12:22,177 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 03:12:22,191 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 03:12:22,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:12:22 BoogieIcfgContainer [2021-12-18 03:12:22,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 03:12:22,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 03:12:22,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 03:12:22,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 03:12:22,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:12:14" (1/3) ... [2021-12-18 03:12:22,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f87c4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:12:22, skipping insertion in model container [2021-12-18 03:12:22,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:12:15" (2/3) ... [2021-12-18 03:12:22,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f87c4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:12:22, skipping insertion in model container [2021-12-18 03:12:22,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:12:22" (3/3) ... [2021-12-18 03:12:22,208 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-12-18 03:12:22,214 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 03:12:22,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 03:12:22,299 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 03:12:22,318 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 03:12:22,319 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 03:12:22,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 499 states, 395 states have (on average 1.4329113924050634) internal successors, (566), 404 states have internal predecessors, (566), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-12-18 03:12:22,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-18 03:12:22,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:22,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:12:22,367 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:22,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:22,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1860140379, now seen corresponding path program 1 times [2021-12-18 03:12:22,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:22,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869044871] [2021-12-18 03:12:22,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:22,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:23,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 03:12:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:12:23,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:23,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869044871] [2021-12-18 03:12:23,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869044871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:23,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:23,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:12:23,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36553494] [2021-12-18 03:12:23,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:23,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:12:23,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:23,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:12:23,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:12:23,064 INFO L87 Difference]: Start difference. First operand has 499 states, 395 states have (on average 1.4329113924050634) internal successors, (566), 404 states have internal predecessors, (566), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 03:12:23,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:23,457 INFO L93 Difference]: Finished difference Result 1407 states and 2087 transitions. [2021-12-18 03:12:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:12:23,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-12-18 03:12:23,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:23,471 INFO L225 Difference]: With dead ends: 1407 [2021-12-18 03:12:23,472 INFO L226 Difference]: Without dead ends: 907 [2021-12-18 03:12:23,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:12:23,479 INFO L933 BasicCegarLoop]: 1029 mSDtfsCounter, 682 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:23,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 1642 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 03:12:23,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-12-18 03:12:23,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 903. [2021-12-18 03:12:23,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 714 states have (on average 1.4341736694677871) internal successors, (1024), 724 states have internal predecessors, (1024), 143 states have call successors, (143), 46 states have call predecessors, (143), 45 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) [2021-12-18 03:12:23,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1305 transitions. [2021-12-18 03:12:23,550 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1305 transitions. Word has length 21 [2021-12-18 03:12:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:23,550 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 1305 transitions. [2021-12-18 03:12:23,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 03:12:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1305 transitions. [2021-12-18 03:12:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-18 03:12:23,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:23,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:12:23,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 03:12:23,553 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:23,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:23,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1341252181, now seen corresponding path program 1 times [2021-12-18 03:12:23,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:23,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539500060] [2021-12-18 03:12:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:23,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:23,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:12:23,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:23,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539500060] [2021-12-18 03:12:23,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539500060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:23,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:23,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:12:23,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784554723] [2021-12-18 03:12:23,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:23,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:12:23,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:23,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:12:23,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:12:23,949 INFO L87 Difference]: Start difference. First operand 903 states and 1305 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 03:12:24,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:24,951 INFO L93 Difference]: Finished difference Result 2674 states and 3857 transitions. [2021-12-18 03:12:24,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:12:24,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2021-12-18 03:12:24,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:24,961 INFO L225 Difference]: With dead ends: 2674 [2021-12-18 03:12:24,961 INFO L226 Difference]: Without dead ends: 1774 [2021-12-18 03:12:24,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:12:24,965 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 700 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:24,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 1867 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-18 03:12:24,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2021-12-18 03:12:25,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1577. [2021-12-18 03:12:25,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1235 states have (on average 1.4008097165991902) internal successors, (1730), 1251 states have internal predecessors, (1730), 256 states have call successors, (256), 86 states have call predecessors, (256), 85 states have return successors, (251), 251 states have call predecessors, (251), 251 states have call successors, (251) [2021-12-18 03:12:25,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2237 transitions. [2021-12-18 03:12:25,022 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2237 transitions. Word has length 28 [2021-12-18 03:12:25,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:25,023 INFO L470 AbstractCegarLoop]: Abstraction has 1577 states and 2237 transitions. [2021-12-18 03:12:25,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 03:12:25,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2237 transitions. [2021-12-18 03:12:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 03:12:25,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:25,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:12:25,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 03:12:25,025 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:25,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:25,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1231327051, now seen corresponding path program 1 times [2021-12-18 03:12:25,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:25,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929518753] [2021-12-18 03:12:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:25,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:25,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:25,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:12:25,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:25,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929518753] [2021-12-18 03:12:25,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929518753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:25,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:25,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 03:12:25,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752608606] [2021-12-18 03:12:25,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:25,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 03:12:25,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:25,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 03:12:25,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:12:25,548 INFO L87 Difference]: Start difference. First operand 1577 states and 2237 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 03:12:27,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:27,286 INFO L93 Difference]: Finished difference Result 5284 states and 7954 transitions. [2021-12-18 03:12:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:12:27,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-12-18 03:12:27,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:27,304 INFO L225 Difference]: With dead ends: 5284 [2021-12-18 03:12:27,319 INFO L226 Difference]: Without dead ends: 3710 [2021-12-18 03:12:27,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-18 03:12:27,348 INFO L933 BasicCegarLoop]: 1422 mSDtfsCounter, 1648 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 6416 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:27,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1723 Valid, 6416 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-18 03:12:27,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2021-12-18 03:12:27,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 1599. [2021-12-18 03:12:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1253 states have (on average 1.3998403830806065) internal successors, (1754), 1269 states have internal predecessors, (1754), 260 states have call successors, (260), 86 states have call predecessors, (260), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2021-12-18 03:12:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2269 transitions. [2021-12-18 03:12:27,503 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2269 transitions. Word has length 33 [2021-12-18 03:12:27,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:27,503 INFO L470 AbstractCegarLoop]: Abstraction has 1599 states and 2269 transitions. [2021-12-18 03:12:27,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 03:12:27,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2269 transitions. [2021-12-18 03:12:27,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 03:12:27,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:27,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:12:27,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 03:12:27,518 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:27,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:27,519 INFO L85 PathProgramCache]: Analyzing trace with hash -574111283, now seen corresponding path program 1 times [2021-12-18 03:12:27,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:27,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436369761] [2021-12-18 03:12:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:27,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:12:27,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:27,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436369761] [2021-12-18 03:12:27,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436369761] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:27,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:27,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:12:27,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084772593] [2021-12-18 03:12:27,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:27,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:12:27,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:27,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:12:27,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:12:27,971 INFO L87 Difference]: Start difference. First operand 1599 states and 2269 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 03:12:28,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:28,572 INFO L93 Difference]: Finished difference Result 1779 states and 2570 transitions. [2021-12-18 03:12:28,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 03:12:28,577 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), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-12-18 03:12:28,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:28,587 INFO L225 Difference]: With dead ends: 1779 [2021-12-18 03:12:28,587 INFO L226 Difference]: Without dead ends: 1776 [2021-12-18 03:12:28,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:12:28,595 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 818 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:28,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 1101 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 03:12:28,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2021-12-18 03:12:28,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1598. [2021-12-18 03:12:28,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1253 states have (on average 1.3990422984836393) internal successors, (1753), 1268 states have internal predecessors, (1753), 259 states have call successors, (259), 86 states have call predecessors, (259), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2021-12-18 03:12:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2267 transitions. [2021-12-18 03:12:28,659 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2267 transitions. Word has length 33 [2021-12-18 03:12:28,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:28,660 INFO L470 AbstractCegarLoop]: Abstraction has 1598 states and 2267 transitions. [2021-12-18 03:12:28,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 03:12:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2267 transitions. [2021-12-18 03:12:28,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-18 03:12:28,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:28,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:12:28,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 03:12:28,664 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:28,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash -617764655, now seen corresponding path program 1 times [2021-12-18 03:12:28,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:28,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000983993] [2021-12-18 03:12:28,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:28,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:29,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:29,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:12:29,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:29,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000983993] [2021-12-18 03:12:29,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000983993] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:29,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:29,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:12:29,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799913582] [2021-12-18 03:12:29,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:29,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:12:29,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:29,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:12:29,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:12:29,081 INFO L87 Difference]: Start difference. First operand 1598 states and 2267 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 03:12:29,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:29,693 INFO L93 Difference]: Finished difference Result 1778 states and 2568 transitions. [2021-12-18 03:12:29,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 03:12:29,693 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), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-12-18 03:12:29,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:29,701 INFO L225 Difference]: With dead ends: 1778 [2021-12-18 03:12:29,702 INFO L226 Difference]: Without dead ends: 1775 [2021-12-18 03:12:29,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:12:29,704 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 815 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:29,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 1098 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 03:12:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2021-12-18 03:12:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1597. [2021-12-18 03:12:29,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1253 states have (on average 1.398244213886672) internal successors, (1752), 1267 states have internal predecessors, (1752), 258 states have call successors, (258), 86 states have call predecessors, (258), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2021-12-18 03:12:29,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2265 transitions. [2021-12-18 03:12:29,777 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2265 transitions. Word has length 34 [2021-12-18 03:12:29,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:29,777 INFO L470 AbstractCegarLoop]: Abstraction has 1597 states and 2265 transitions. [2021-12-18 03:12:29,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 03:12:29,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2265 transitions. [2021-12-18 03:12:29,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-18 03:12:29,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:29,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:12:29,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 03:12:29,779 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:29,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:29,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1971014320, now seen corresponding path program 1 times [2021-12-18 03:12:29,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:29,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741744469] [2021-12-18 03:12:29,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:29,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:30,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:30,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:12:30,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:30,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741744469] [2021-12-18 03:12:30,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741744469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:30,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:30,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:12:30,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019520105] [2021-12-18 03:12:30,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:30,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:12:30,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:30,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:12:30,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:12:30,159 INFO L87 Difference]: Start difference. First operand 1597 states and 2265 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 03:12:31,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:31,059 INFO L93 Difference]: Finished difference Result 4611 states and 6639 transitions. [2021-12-18 03:12:31,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:12:31,060 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), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2021-12-18 03:12:31,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:31,074 INFO L225 Difference]: With dead ends: 4611 [2021-12-18 03:12:31,074 INFO L226 Difference]: Without dead ends: 3005 [2021-12-18 03:12:31,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:12:31,081 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 896 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:31,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [955 Valid, 1602 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-18 03:12:31,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2021-12-18 03:12:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2778. [2021-12-18 03:12:31,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2185 states have (on average 1.3977116704805492) internal successors, (3054), 2222 states have internal predecessors, (3054), 455 states have call successors, (455), 151 states have call predecessors, (455), 137 states have return successors, (445), 428 states have call predecessors, (445), 445 states have call successors, (445) [2021-12-18 03:12:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 3954 transitions. [2021-12-18 03:12:31,202 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 3954 transitions. Word has length 35 [2021-12-18 03:12:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:31,203 INFO L470 AbstractCegarLoop]: Abstraction has 2778 states and 3954 transitions. [2021-12-18 03:12:31,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 03:12:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 3954 transitions. [2021-12-18 03:12:31,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-18 03:12:31,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:31,206 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-18 03:12:31,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 03:12:31,206 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:31,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:31,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2101219672, now seen corresponding path program 1 times [2021-12-18 03:12:31,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:31,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484422134] [2021-12-18 03:12:31,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:31,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:31,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:31,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:12:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:31,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-18 03:12:31,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:31,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484422134] [2021-12-18 03:12:31,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484422134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:31,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:31,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:12:31,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639439428] [2021-12-18 03:12:31,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:31,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:12:31,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:31,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:12:31,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:12:31,631 INFO L87 Difference]: Start difference. First operand 2778 states and 3954 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-18 03:12:32,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:32,682 INFO L93 Difference]: Finished difference Result 7242 states and 10447 transitions. [2021-12-18 03:12:32,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:12:32,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2021-12-18 03:12:32,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:32,701 INFO L225 Difference]: With dead ends: 7242 [2021-12-18 03:12:32,702 INFO L226 Difference]: Without dead ends: 4467 [2021-12-18 03:12:32,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:12:32,712 INFO L933 BasicCegarLoop]: 977 mSDtfsCounter, 846 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1974 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:32,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 1974 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-18 03:12:32,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2021-12-18 03:12:32,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 4138. [2021-12-18 03:12:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 3275 states have (on average 1.3880916030534352) internal successors, (4546), 3324 states have internal predecessors, (4546), 659 states have call successors, (659), 221 states have call predecessors, (659), 203 states have return successors, (649), 628 states have call predecessors, (649), 649 states have call successors, (649) [2021-12-18 03:12:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 5854 transitions. [2021-12-18 03:12:32,845 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 5854 transitions. Word has length 55 [2021-12-18 03:12:32,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:32,846 INFO L470 AbstractCegarLoop]: Abstraction has 4138 states and 5854 transitions. [2021-12-18 03:12:32,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-18 03:12:32,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 5854 transitions. [2021-12-18 03:12:32,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-18 03:12:32,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:32,850 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-18 03:12:32,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 03:12:32,850 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:32,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:32,850 INFO L85 PathProgramCache]: Analyzing trace with hash 196374771, now seen corresponding path program 1 times [2021-12-18 03:12:32,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:32,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840872657] [2021-12-18 03:12:32,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:32,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:33,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:33,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 03:12:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:33,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-18 03:12:33,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:33,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840872657] [2021-12-18 03:12:33,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840872657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:33,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:33,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:12:33,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099046498] [2021-12-18 03:12:33,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:33,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:12:33,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:33,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:12:33,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:12:33,365 INFO L87 Difference]: Start difference. First operand 4138 states and 5854 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-18 03:12:34,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:34,424 INFO L93 Difference]: Finished difference Result 10056 states and 14407 transitions. [2021-12-18 03:12:34,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:12:34,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2021-12-18 03:12:34,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:34,508 INFO L225 Difference]: With dead ends: 10056 [2021-12-18 03:12:34,508 INFO L226 Difference]: Without dead ends: 5921 [2021-12-18 03:12:34,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:12:34,518 INFO L933 BasicCegarLoop]: 1267 mSDtfsCounter, 763 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 2394 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:34,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 2394 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-18 03:12:34,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5921 states. [2021-12-18 03:12:34,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5921 to 5498. [2021-12-18 03:12:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5498 states, 4365 states have (on average 1.3832760595647193) internal successors, (6038), 4426 states have internal predecessors, (6038), 863 states have call successors, (863), 291 states have call predecessors, (863), 269 states have return successors, (853), 828 states have call predecessors, (853), 853 states have call successors, (853) [2021-12-18 03:12:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5498 states to 5498 states and 7754 transitions. [2021-12-18 03:12:34,674 INFO L78 Accepts]: Start accepts. Automaton has 5498 states and 7754 transitions. Word has length 75 [2021-12-18 03:12:34,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:34,675 INFO L470 AbstractCegarLoop]: Abstraction has 5498 states and 7754 transitions. [2021-12-18 03:12:34,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-18 03:12:34,675 INFO L276 IsEmpty]: Start isEmpty. Operand 5498 states and 7754 transitions. [2021-12-18 03:12:34,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-18 03:12:34,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:34,677 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:12:34,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 03:12:34,678 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:34,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:34,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1785936298, now seen corresponding path program 1 times [2021-12-18 03:12:34,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:34,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073466705] [2021-12-18 03:12:34,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:34,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:12:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:35,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 03:12:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:35,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 03:12:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:35,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 03:12:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:35,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:12:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:35,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:35,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:12:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:35,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 03:12:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:35,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 03:12:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 03:12:35,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:35,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073466705] [2021-12-18 03:12:35,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073466705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:35,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:35,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:12:35,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141338426] [2021-12-18 03:12:35,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:35,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:12:35,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:35,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:12:35,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:12:35,087 INFO L87 Difference]: Start difference. First operand 5498 states and 7754 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-18 03:12:37,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:12:38,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:38,465 INFO L93 Difference]: Finished difference Result 13582 states and 19486 transitions. [2021-12-18 03:12:38,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 03:12:38,466 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2021-12-18 03:12:38,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:38,505 INFO L225 Difference]: With dead ends: 13582 [2021-12-18 03:12:38,509 INFO L226 Difference]: Without dead ends: 8087 [2021-12-18 03:12:38,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:12:38,528 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 1066 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 551 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:38,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 2373 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 643 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2021-12-18 03:12:38,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8087 states. [2021-12-18 03:12:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8087 to 7208. [2021-12-18 03:12:38,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7208 states, 5881 states have (on average 1.4057133140622342) internal successors, (8267), 5952 states have internal predecessors, (8267), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2021-12-18 03:12:38,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 10229 transitions. [2021-12-18 03:12:38,751 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 10229 transitions. Word has length 92 [2021-12-18 03:12:38,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:38,752 INFO L470 AbstractCegarLoop]: Abstraction has 7208 states and 10229 transitions. [2021-12-18 03:12:38,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-18 03:12:38,753 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 10229 transitions. [2021-12-18 03:12:38,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-18 03:12:38,757 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:38,757 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-12-18 03:12:38,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 03:12:38,758 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:38,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2081938916, now seen corresponding path program 1 times [2021-12-18 03:12:38,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:38,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456066181] [2021-12-18 03:12:38,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:38,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:39,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:39,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:39,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 03:12:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:39,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:39,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:39,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:12:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:39,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 03:12:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-18 03:12:39,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:39,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456066181] [2021-12-18 03:12:39,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456066181] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:12:39,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436782215] [2021-12-18 03:12:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:39,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:12:39,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:12:39,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:12:39,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 03:12:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 12129 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 03:12:40,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:12:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-18 03:12:40,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:12:40,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436782215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:40,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:12:40,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2021-12-18 03:12:40,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934245620] [2021-12-18 03:12:40,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:40,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 03:12:40,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:40,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 03:12:40,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-18 03:12:40,938 INFO L87 Difference]: Start difference. First operand 7208 states and 10229 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-18 03:12:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:41,817 INFO L93 Difference]: Finished difference Result 18050 states and 26050 transitions. [2021-12-18 03:12:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:12:41,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 107 [2021-12-18 03:12:41,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:41,863 INFO L225 Difference]: With dead ends: 18050 [2021-12-18 03:12:41,864 INFO L226 Difference]: Without dead ends: 10805 [2021-12-18 03:12:41,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-12-18 03:12:41,883 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 717 mSDsluCounter, 5279 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 6254 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:41,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 6254 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 03:12:41,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10805 states. [2021-12-18 03:12:42,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10805 to 7213. [2021-12-18 03:12:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7213 states, 5886 states have (on average 1.401291199456337) internal successors, (8248), 5957 states have internal predecessors, (8248), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2021-12-18 03:12:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7213 states to 7213 states and 10210 transitions. [2021-12-18 03:12:42,089 INFO L78 Accepts]: Start accepts. Automaton has 7213 states and 10210 transitions. Word has length 107 [2021-12-18 03:12:42,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:42,089 INFO L470 AbstractCegarLoop]: Abstraction has 7213 states and 10210 transitions. [2021-12-18 03:12:42,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-18 03:12:42,089 INFO L276 IsEmpty]: Start isEmpty. Operand 7213 states and 10210 transitions. [2021-12-18 03:12:42,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-18 03:12:42,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:42,093 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-12-18 03:12:42,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 03:12:42,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-18 03:12:42,308 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:42,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:42,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1609003934, now seen corresponding path program 1 times [2021-12-18 03:12:42,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:42,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328651538] [2021-12-18 03:12:42,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:42,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:12:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:42,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 03:12:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:42,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:42,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:42,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:42,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:12:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:12:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-18 03:12:42,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:42,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328651538] [2021-12-18 03:12:42,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328651538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:42,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:42,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 03:12:42,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830041217] [2021-12-18 03:12:42,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:42,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 03:12:42,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:42,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 03:12:42,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:12:42,850 INFO L87 Difference]: Start difference. First operand 7213 states and 10210 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 03:12:44,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:44,351 INFO L93 Difference]: Finished difference Result 23671 states and 35308 transitions. [2021-12-18 03:12:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 03:12:44,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 133 [2021-12-18 03:12:44,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:44,399 INFO L225 Difference]: With dead ends: 23671 [2021-12-18 03:12:44,400 INFO L226 Difference]: Without dead ends: 16461 [2021-12-18 03:12:44,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:12:44,424 INFO L933 BasicCegarLoop]: 1090 mSDtfsCounter, 1418 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:44,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 3922 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-18 03:12:44,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16461 states. [2021-12-18 03:12:44,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16461 to 7189. [2021-12-18 03:12:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7189 states, 5862 states have (on average 1.3974752644148756) internal successors, (8192), 5933 states have internal predecessors, (8192), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2021-12-18 03:12:44,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 10154 transitions. [2021-12-18 03:12:44,731 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 10154 transitions. Word has length 133 [2021-12-18 03:12:44,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:44,732 INFO L470 AbstractCegarLoop]: Abstraction has 7189 states and 10154 transitions. [2021-12-18 03:12:44,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 03:12:44,733 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 10154 transitions. [2021-12-18 03:12:44,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-18 03:12:44,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:44,739 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-12-18 03:12:44,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 03:12:44,739 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:44,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:44,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1955838800, now seen corresponding path program 1 times [2021-12-18 03:12:44,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:44,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503297322] [2021-12-18 03:12:44,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:44,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:45,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:45,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:12:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:45,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:12:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:45,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:45,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:12:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:45,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:45,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:45,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:45,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:12:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:45,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 03:12:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-18 03:12:45,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:45,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503297322] [2021-12-18 03:12:45,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503297322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:45,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:45,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 03:12:45,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993879223] [2021-12-18 03:12:45,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:45,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 03:12:45,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:45,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 03:12:45,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:12:45,117 INFO L87 Difference]: Start difference. First operand 7189 states and 10154 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-18 03:12:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:47,031 INFO L93 Difference]: Finished difference Result 24324 states and 36225 transitions. [2021-12-18 03:12:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 03:12:47,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 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 136 [2021-12-18 03:12:47,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:47,089 INFO L225 Difference]: With dead ends: 24324 [2021-12-18 03:12:47,090 INFO L226 Difference]: Without dead ends: 17138 [2021-12-18 03:12:47,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:12:47,113 INFO L933 BasicCegarLoop]: 1718 mSDtfsCounter, 832 mSDsluCounter, 5590 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 7308 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:47,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 7308 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-18 03:12:47,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17138 states. [2021-12-18 03:12:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17138 to 7205. [2021-12-18 03:12:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7205 states, 5878 states have (on average 1.396393331064988) internal successors, (8208), 5949 states have internal predecessors, (8208), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2021-12-18 03:12:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7205 states to 7205 states and 10170 transitions. [2021-12-18 03:12:47,472 INFO L78 Accepts]: Start accepts. Automaton has 7205 states and 10170 transitions. Word has length 136 [2021-12-18 03:12:47,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:47,473 INFO L470 AbstractCegarLoop]: Abstraction has 7205 states and 10170 transitions. [2021-12-18 03:12:47,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-18 03:12:47,473 INFO L276 IsEmpty]: Start isEmpty. Operand 7205 states and 10170 transitions. [2021-12-18 03:12:47,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-18 03:12:47,481 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:47,481 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-12-18 03:12:47,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 03:12:47,482 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:47,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:47,482 INFO L85 PathProgramCache]: Analyzing trace with hash 250270820, now seen corresponding path program 1 times [2021-12-18 03:12:47,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:47,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181652554] [2021-12-18 03:12:47,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:47,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:47,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:12:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:47,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:12:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:47,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:47,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 03:12:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:47,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:47,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:12:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:47,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 03:12:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:47,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-18 03:12:47,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:47,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181652554] [2021-12-18 03:12:47,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181652554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:47,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:47,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 03:12:47,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571630748] [2021-12-18 03:12:47,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:47,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 03:12:47,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:47,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 03:12:47,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:12:47,924 INFO L87 Difference]: Start difference. First operand 7205 states and 10170 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-18 03:12:49,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:49,214 INFO L93 Difference]: Finished difference Result 12008 states and 16881 transitions. [2021-12-18 03:12:49,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 03:12:49,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 146 [2021-12-18 03:12:49,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:49,228 INFO L225 Difference]: With dead ends: 12008 [2021-12-18 03:12:49,229 INFO L226 Difference]: Without dead ends: 4734 [2021-12-18 03:12:49,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-18 03:12:49,241 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 429 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:49,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 3138 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 03:12:49,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2021-12-18 03:12:49,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 3276. [2021-12-18 03:12:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3276 states, 2653 states have (on average 1.4089709762532983) internal successors, (3738), 2693 states have internal predecessors, (3738), 460 states have call successors, (460), 177 states have call predecessors, (460), 162 states have return successors, (450), 429 states have call predecessors, (450), 450 states have call successors, (450) [2021-12-18 03:12:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 4648 transitions. [2021-12-18 03:12:49,340 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 4648 transitions. Word has length 146 [2021-12-18 03:12:49,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:49,341 INFO L470 AbstractCegarLoop]: Abstraction has 3276 states and 4648 transitions. [2021-12-18 03:12:49,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-18 03:12:49,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 4648 transitions. [2021-12-18 03:12:49,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-18 03:12:49,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:49,344 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 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] [2021-12-18 03:12:49,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 03:12:49,344 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:49,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1352934803, now seen corresponding path program 1 times [2021-12-18 03:12:49,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:49,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145080917] [2021-12-18 03:12:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:49,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:49,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:49,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:49,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:12:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:49,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:12:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:49,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 03:12:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:49,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:49,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:49,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:49,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:12:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:49,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 03:12:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:49,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-18 03:12:49,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:49,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145080917] [2021-12-18 03:12:49,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145080917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:49,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:49,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:12:49,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197820083] [2021-12-18 03:12:49,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:49,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:12:49,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:49,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:12:49,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:12:49,728 INFO L87 Difference]: Start difference. First operand 3276 states and 4648 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:12:50,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:50,962 INFO L93 Difference]: Finished difference Result 7833 states and 11214 transitions. [2021-12-18 03:12:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:12:50,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 162 [2021-12-18 03:12:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:50,976 INFO L225 Difference]: With dead ends: 7833 [2021-12-18 03:12:50,977 INFO L226 Difference]: Without dead ends: 4575 [2021-12-18 03:12:50,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:12:50,984 INFO L933 BasicCegarLoop]: 1288 mSDtfsCounter, 711 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 3825 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:50,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 3825 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 03:12:50,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2021-12-18 03:12:51,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 3991. [2021-12-18 03:12:51,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3991 states, 3244 states have (on average 1.408446362515413) internal successors, (4569), 3290 states have internal predecessors, (4569), 553 states have call successors, (553), 210 states have call predecessors, (553), 193 states have return successors, (543), 520 states have call predecessors, (543), 543 states have call successors, (543) [2021-12-18 03:12:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 5665 transitions. [2021-12-18 03:12:51,102 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 5665 transitions. Word has length 162 [2021-12-18 03:12:51,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:51,103 INFO L470 AbstractCegarLoop]: Abstraction has 3991 states and 5665 transitions. [2021-12-18 03:12:51,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:12:51,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 5665 transitions. [2021-12-18 03:12:51,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-18 03:12:51,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:51,106 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2021-12-18 03:12:51,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 03:12:51,106 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:51,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:51,107 INFO L85 PathProgramCache]: Analyzing trace with hash 549721486, now seen corresponding path program 1 times [2021-12-18 03:12:51,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:51,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179077622] [2021-12-18 03:12:51,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:51,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:51,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:51,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:51,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:12:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:51,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:12:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:51,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 03:12:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:51,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:51,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:51,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:12:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:51,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 03:12:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-18 03:12:51,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:51,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179077622] [2021-12-18 03:12:51,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179077622] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:12:51,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552395241] [2021-12-18 03:12:51,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:51,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:12:51,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:12:51,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:12:51,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 03:12:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:53,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 12382 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 03:12:53,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:12:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-18 03:12:53,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:12:53,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552395241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:53,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:12:53,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2021-12-18 03:12:53,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404316706] [2021-12-18 03:12:53,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:53,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:12:53,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:53,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:12:53,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:12:53,476 INFO L87 Difference]: Start difference. First operand 3991 states and 5665 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-18 03:12:54,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:54,250 INFO L93 Difference]: Finished difference Result 11936 states and 16943 transitions. [2021-12-18 03:12:54,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 03:12:54,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 152 [2021-12-18 03:12:54,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:54,301 INFO L225 Difference]: With dead ends: 11936 [2021-12-18 03:12:54,302 INFO L226 Difference]: Without dead ends: 11921 [2021-12-18 03:12:54,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:12:54,314 INFO L933 BasicCegarLoop]: 1330 mSDtfsCounter, 1391 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:54,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 2570 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 03:12:54,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11921 states. [2021-12-18 03:12:54,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11921 to 11797. [2021-12-18 03:12:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11797 states, 9592 states have (on average 1.411697247706422) internal successors, (13541), 9722 states have internal predecessors, (13541), 1635 states have call successors, (1635), 614 states have call predecessors, (1635), 569 states have return successors, (1619), 1550 states have call predecessors, (1619), 1619 states have call successors, (1619) [2021-12-18 03:12:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11797 states to 11797 states and 16795 transitions. [2021-12-18 03:12:54,695 INFO L78 Accepts]: Start accepts. Automaton has 11797 states and 16795 transitions. Word has length 152 [2021-12-18 03:12:54,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:54,696 INFO L470 AbstractCegarLoop]: Abstraction has 11797 states and 16795 transitions. [2021-12-18 03:12:54,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-18 03:12:54,696 INFO L276 IsEmpty]: Start isEmpty. Operand 11797 states and 16795 transitions. [2021-12-18 03:12:54,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-18 03:12:54,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:54,703 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 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] [2021-12-18 03:12:54,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 03:12:54,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-18 03:12:54,916 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:54,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:54,916 INFO L85 PathProgramCache]: Analyzing trace with hash 826931836, now seen corresponding path program 1 times [2021-12-18 03:12:54,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:54,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596434368] [2021-12-18 03:12:54,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:54,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:55,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:55,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:12:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:55,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:55,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:12:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:55,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 03:12:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:55,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:55,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:55,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:55,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:12:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:55,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 03:12:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:55,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-18 03:12:55,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:55,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596434368] [2021-12-18 03:12:55,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596434368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:55,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:55,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:12:55,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705593998] [2021-12-18 03:12:55,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:55,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:12:55,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:55,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:12:55,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:12:55,287 INFO L87 Difference]: Start difference. First operand 11797 states and 16795 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:12:56,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:56,902 INFO L93 Difference]: Finished difference Result 27523 states and 39528 transitions. [2021-12-18 03:12:56,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:12:56,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 161 [2021-12-18 03:12:56,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:56,954 INFO L225 Difference]: With dead ends: 27523 [2021-12-18 03:12:56,954 INFO L226 Difference]: Without dead ends: 15744 [2021-12-18 03:12:56,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:12:56,982 INFO L933 BasicCegarLoop]: 1288 mSDtfsCounter, 880 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:56,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 3193 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-18 03:12:56,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15744 states. [2021-12-18 03:12:57,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15744 to 13938. [2021-12-18 03:12:57,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13938 states, 11361 states have (on average 1.410791303582431) internal successors, (16028), 11509 states have internal predecessors, (16028), 1914 states have call successors, (1914), 713 states have call predecessors, (1914), 662 states have return successors, (1898), 1823 states have call predecessors, (1898), 1898 states have call successors, (1898) [2021-12-18 03:12:57,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13938 states to 13938 states and 19840 transitions. [2021-12-18 03:12:57,425 INFO L78 Accepts]: Start accepts. Automaton has 13938 states and 19840 transitions. Word has length 161 [2021-12-18 03:12:57,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:57,426 INFO L470 AbstractCegarLoop]: Abstraction has 13938 states and 19840 transitions. [2021-12-18 03:12:57,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:12:57,426 INFO L276 IsEmpty]: Start isEmpty. Operand 13938 states and 19840 transitions. [2021-12-18 03:12:57,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-18 03:12:57,431 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:57,432 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2021-12-18 03:12:57,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 03:12:57,432 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:57,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:57,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1995685530, now seen corresponding path program 1 times [2021-12-18 03:12:57,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:57,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272963641] [2021-12-18 03:12:57,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:57,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:57,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:57,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:12:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:57,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:57,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:12:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 03:12:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:57,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:12:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 03:12:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:57,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-18 03:12:57,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:57,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272963641] [2021-12-18 03:12:57,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272963641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:57,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:57,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:12:57,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116255428] [2021-12-18 03:12:57,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:57,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:12:57,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:57,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:12:57,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:12:57,798 INFO L87 Difference]: Start difference. First operand 13938 states and 19840 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:12:59,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:59,571 INFO L93 Difference]: Finished difference Result 31937 states and 45834 transitions. [2021-12-18 03:12:59,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:12:59,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 160 [2021-12-18 03:12:59,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:59,627 INFO L225 Difference]: With dead ends: 31937 [2021-12-18 03:12:59,628 INFO L226 Difference]: Without dead ends: 18017 [2021-12-18 03:12:59,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:12:59,659 INFO L933 BasicCegarLoop]: 1266 mSDtfsCounter, 713 mSDsluCounter, 2484 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 3750 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:59,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 3750 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-18 03:12:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18017 states. [2021-12-18 03:13:00,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18017 to 16079. [2021-12-18 03:13:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16079 states, 13130 states have (on average 1.41012947448591) internal successors, (18515), 13296 states have internal predecessors, (18515), 2193 states have call successors, (2193), 812 states have call predecessors, (2193), 755 states have return successors, (2177), 2096 states have call predecessors, (2177), 2177 states have call successors, (2177) [2021-12-18 03:13:00,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16079 states to 16079 states and 22885 transitions. [2021-12-18 03:13:00,164 INFO L78 Accepts]: Start accepts. Automaton has 16079 states and 22885 transitions. Word has length 160 [2021-12-18 03:13:00,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:00,165 INFO L470 AbstractCegarLoop]: Abstraction has 16079 states and 22885 transitions. [2021-12-18 03:13:00,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:13:00,165 INFO L276 IsEmpty]: Start isEmpty. Operand 16079 states and 22885 transitions. [2021-12-18 03:13:00,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-18 03:13:00,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:00,171 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:13:00,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-18 03:13:00,171 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:00,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:00,172 INFO L85 PathProgramCache]: Analyzing trace with hash -722518652, now seen corresponding path program 1 times [2021-12-18 03:13:00,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:00,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442886384] [2021-12-18 03:13:00,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:00,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:13:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:13:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:13:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:13:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 03:13:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-18 03:13:00,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:00,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442886384] [2021-12-18 03:13:00,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442886384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:00,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:00,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 03:13:00,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912070828] [2021-12-18 03:13:00,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:00,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 03:13:00,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:00,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 03:13:00,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:13:00,602 INFO L87 Difference]: Start difference. First operand 16079 states and 22885 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 03:13:02,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:02,021 INFO L93 Difference]: Finished difference Result 33260 states and 47579 transitions. [2021-12-18 03:13:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:13:02,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 161 [2021-12-18 03:13:02,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:02,071 INFO L225 Difference]: With dead ends: 33260 [2021-12-18 03:13:02,072 INFO L226 Difference]: Without dead ends: 17199 [2021-12-18 03:13:02,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:13:02,104 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 994 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:02,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 2567 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-18 03:13:02,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17199 states. [2021-12-18 03:13:02,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17199 to 16079. [2021-12-18 03:13:02,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16079 states, 13130 states have (on average 1.4096725057121098) internal successors, (18509), 13296 states have internal predecessors, (18509), 2193 states have call successors, (2193), 812 states have call predecessors, (2193), 755 states have return successors, (2177), 2096 states have call predecessors, (2177), 2177 states have call successors, (2177) [2021-12-18 03:13:02,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16079 states to 16079 states and 22879 transitions. [2021-12-18 03:13:02,585 INFO L78 Accepts]: Start accepts. Automaton has 16079 states and 22879 transitions. Word has length 161 [2021-12-18 03:13:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:02,586 INFO L470 AbstractCegarLoop]: Abstraction has 16079 states and 22879 transitions. [2021-12-18 03:13:02,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 03:13:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 16079 states and 22879 transitions. [2021-12-18 03:13:02,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-18 03:13:02,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:02,591 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 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] [2021-12-18 03:13:02,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-18 03:13:02,592 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:02,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash 195866773, now seen corresponding path program 1 times [2021-12-18 03:13:02,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:02,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15461715] [2021-12-18 03:13:02,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:02,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:02,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:02,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:02,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:13:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:02,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:13:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:02,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 03:13:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:02,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:02,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:02,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:13:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:02,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-18 03:13:02,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:02,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15461715] [2021-12-18 03:13:02,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15461715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:02,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:02,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 03:13:02,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141913204] [2021-12-18 03:13:02,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:02,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 03:13:02,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:02,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 03:13:02,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:13:02,943 INFO L87 Difference]: Start difference. First operand 16079 states and 22879 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:13:04,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:04,412 INFO L93 Difference]: Finished difference Result 33260 states and 47567 transitions. [2021-12-18 03:13:04,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:13:04,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 158 [2021-12-18 03:13:04,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:04,463 INFO L225 Difference]: With dead ends: 33260 [2021-12-18 03:13:04,463 INFO L226 Difference]: Without dead ends: 17199 [2021-12-18 03:13:04,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:13:04,495 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 825 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:04,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 2958 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-18 03:13:04,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17199 states. [2021-12-18 03:13:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17199 to 16079. [2021-12-18 03:13:04,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16079 states, 13130 states have (on average 1.4092155369383093) internal successors, (18503), 13296 states have internal predecessors, (18503), 2193 states have call successors, (2193), 812 states have call predecessors, (2193), 755 states have return successors, (2177), 2096 states have call predecessors, (2177), 2177 states have call successors, (2177) [2021-12-18 03:13:05,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16079 states to 16079 states and 22873 transitions. [2021-12-18 03:13:05,013 INFO L78 Accepts]: Start accepts. Automaton has 16079 states and 22873 transitions. Word has length 158 [2021-12-18 03:13:05,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:05,014 INFO L470 AbstractCegarLoop]: Abstraction has 16079 states and 22873 transitions. [2021-12-18 03:13:05,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:13:05,014 INFO L276 IsEmpty]: Start isEmpty. Operand 16079 states and 22873 transitions. [2021-12-18 03:13:05,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-18 03:13:05,019 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:05,020 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:13:05,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-18 03:13:05,020 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:05,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:05,020 INFO L85 PathProgramCache]: Analyzing trace with hash 353912177, now seen corresponding path program 1 times [2021-12-18 03:13:05,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:05,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659016013] [2021-12-18 03:13:05,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:05,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:13:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:13:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:13:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 03:13:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 03:13:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-18 03:13:05,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:05,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659016013] [2021-12-18 03:13:05,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659016013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:05,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:05,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 03:13:05,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840505289] [2021-12-18 03:13:05,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:05,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 03:13:05,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:05,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 03:13:05,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:13:05,377 INFO L87 Difference]: Start difference. First operand 16079 states and 22873 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 03:13:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:07,087 INFO L93 Difference]: Finished difference Result 33260 states and 47555 transitions. [2021-12-18 03:13:07,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:13:07,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 159 [2021-12-18 03:13:07,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:07,155 INFO L225 Difference]: With dead ends: 33260 [2021-12-18 03:13:07,155 INFO L226 Difference]: Without dead ends: 17199 [2021-12-18 03:13:07,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:13:07,190 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 824 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:07,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 2956 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-18 03:13:07,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17199 states. [2021-12-18 03:13:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17199 to 16079. [2021-12-18 03:13:07,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16079 states, 13130 states have (on average 1.4087585681645087) internal successors, (18497), 13296 states have internal predecessors, (18497), 2193 states have call successors, (2193), 812 states have call predecessors, (2193), 755 states have return successors, (2177), 2096 states have call predecessors, (2177), 2177 states have call successors, (2177) [2021-12-18 03:13:07,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16079 states to 16079 states and 22867 transitions. [2021-12-18 03:13:07,785 INFO L78 Accepts]: Start accepts. Automaton has 16079 states and 22867 transitions. Word has length 159 [2021-12-18 03:13:07,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:07,786 INFO L470 AbstractCegarLoop]: Abstraction has 16079 states and 22867 transitions. [2021-12-18 03:13:07,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 03:13:07,786 INFO L276 IsEmpty]: Start isEmpty. Operand 16079 states and 22867 transitions. [2021-12-18 03:13:07,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-18 03:13:07,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:07,791 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-18 03:13:07,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-18 03:13:07,792 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:07,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:07,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1860091776, now seen corresponding path program 1 times [2021-12-18 03:13:07,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:07,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809988576] [2021-12-18 03:13:07,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:07,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:13:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:13:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 03:13:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 03:13:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 03:13:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 03:13:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:13:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:13:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:13:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 03:13:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:08,171 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-18 03:13:08,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:08,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809988576] [2021-12-18 03:13:08,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809988576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:08,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:08,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:13:08,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393837306] [2021-12-18 03:13:08,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:08,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:13:08,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:08,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:13:08,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:13:08,176 INFO L87 Difference]: Start difference. First operand 16079 states and 22867 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-18 03:13:10,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:13:11,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:11,947 INFO L93 Difference]: Finished difference Result 34184 states and 49244 transitions. [2021-12-18 03:13:11,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 03:13:11,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 161 [2021-12-18 03:13:11,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:12,024 INFO L225 Difference]: With dead ends: 34184 [2021-12-18 03:13:12,024 INFO L226 Difference]: Without dead ends: 18123 [2021-12-18 03:13:12,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-18 03:13:12,057 INFO L933 BasicCegarLoop]: 682 mSDtfsCounter, 626 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 383 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:12,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [643 Valid, 2330 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 576 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2021-12-18 03:13:12,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18123 states. [2021-12-18 03:13:12,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18123 to 16100. [2021-12-18 03:13:12,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16100 states, 13151 states have (on average 1.408105847464071) internal successors, (18518), 13317 states have internal predecessors, (18518), 2193 states have call successors, (2193), 812 states have call predecessors, (2193), 755 states have return successors, (2177), 2096 states have call predecessors, (2177), 2177 states have call successors, (2177) [2021-12-18 03:13:12,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16100 states to 16100 states and 22888 transitions. [2021-12-18 03:13:12,576 INFO L78 Accepts]: Start accepts. Automaton has 16100 states and 22888 transitions. Word has length 161 [2021-12-18 03:13:12,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:12,576 INFO L470 AbstractCegarLoop]: Abstraction has 16100 states and 22888 transitions. [2021-12-18 03:13:12,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-18 03:13:12,577 INFO L276 IsEmpty]: Start isEmpty. Operand 16100 states and 22888 transitions. [2021-12-18 03:13:12,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-18 03:13:12,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:12,582 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 03:13:12,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-18 03:13:12,582 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:12,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash -319314196, now seen corresponding path program 1 times [2021-12-18 03:13:12,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:12,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263149659] [2021-12-18 03:13:12,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:12,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:13:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:13:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:13:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:13:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-18 03:13:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 03:13:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 03:13:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:13:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 03:13:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 03:13:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 03:13:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-18 03:13:12,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:12,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263149659] [2021-12-18 03:13:12,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263149659] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:12,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:12,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:13:12,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24681481] [2021-12-18 03:13:12,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:12,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:13:12,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:12,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:13:12,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:13:12,958 INFO L87 Difference]: Start difference. First operand 16100 states and 22888 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 03:13:16,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:13:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:17,113 INFO L93 Difference]: Finished difference Result 34207 states and 49101 transitions. [2021-12-18 03:13:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 03:13:17,114 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 162 [2021-12-18 03:13:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:17,196 INFO L225 Difference]: With dead ends: 34207 [2021-12-18 03:13:17,197 INFO L226 Difference]: Without dead ends: 18125 [2021-12-18 03:13:17,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-18 03:13:17,231 INFO L933 BasicCegarLoop]: 1064 mSDtfsCounter, 1174 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 628 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 3144 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:17,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1210 Valid, 3144 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 758 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-12-18 03:13:17,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18125 states. [2021-12-18 03:13:17,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18125 to 15954. [2021-12-18 03:13:17,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15954 states, 13048 states have (on average 1.4074954015941141) internal successors, (18365), 13231 states have internal predecessors, (18365), 2156 states have call successors, (2156), 781 states have call predecessors, (2156), 749 states have return successors, (2105), 2067 states have call predecessors, (2105), 2105 states have call successors, (2105) [2021-12-18 03:13:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15954 states to 15954 states and 22626 transitions. [2021-12-18 03:13:17,766 INFO L78 Accepts]: Start accepts. Automaton has 15954 states and 22626 transitions. Word has length 162 [2021-12-18 03:13:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:17,769 INFO L470 AbstractCegarLoop]: Abstraction has 15954 states and 22626 transitions. [2021-12-18 03:13:17,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 03:13:17,769 INFO L276 IsEmpty]: Start isEmpty. Operand 15954 states and 22626 transitions. [2021-12-18 03:13:17,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-18 03:13:17,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:17,775 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 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] [2021-12-18 03:13:17,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-18 03:13:17,776 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:17,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2022388061, now seen corresponding path program 1 times [2021-12-18 03:13:17,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:17,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453591724] [2021-12-18 03:13:17,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:17,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:18,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:18,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:13:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:18,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:18,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:13:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:18,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 03:13:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:18,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:18,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:18,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:18,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 03:13:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:18,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-18 03:13:18,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:18,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453591724] [2021-12-18 03:13:18,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453591724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:18,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:18,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:13:18,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703253551] [2021-12-18 03:13:18,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:18,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:13:18,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:18,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:13:18,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:13:18,110 INFO L87 Difference]: Start difference. First operand 15954 states and 22626 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-18 03:13:19,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:19,558 INFO L93 Difference]: Finished difference Result 32276 states and 46048 transitions. [2021-12-18 03:13:19,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 03:13:19,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 162 [2021-12-18 03:13:19,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:19,626 INFO L225 Difference]: With dead ends: 32276 [2021-12-18 03:13:19,626 INFO L226 Difference]: Without dead ends: 15256 [2021-12-18 03:13:19,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:13:19,676 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 702 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:19,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 2021 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-18 03:13:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15256 states. [2021-12-18 03:13:20,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15256 to 14212. [2021-12-18 03:13:20,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14212 states, 11650 states have (on average 1.4020600858369099) internal successors, (16334), 11812 states have internal predecessors, (16334), 1911 states have call successors, (1911), 682 states have call predecessors, (1911), 650 states have return successors, (1860), 1834 states have call predecessors, (1860), 1860 states have call successors, (1860) [2021-12-18 03:13:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14212 states to 14212 states and 20105 transitions. [2021-12-18 03:13:20,306 INFO L78 Accepts]: Start accepts. Automaton has 14212 states and 20105 transitions. Word has length 162 [2021-12-18 03:13:20,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:20,308 INFO L470 AbstractCegarLoop]: Abstraction has 14212 states and 20105 transitions. [2021-12-18 03:13:20,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-18 03:13:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 14212 states and 20105 transitions. [2021-12-18 03:13:20,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-18 03:13:20,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:20,319 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-18 03:13:20,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-18 03:13:20,319 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:20,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:20,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1566091331, now seen corresponding path program 1 times [2021-12-18 03:13:20,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:20,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46423361] [2021-12-18 03:13:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:20,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:20,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:20,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:13:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:20,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:13:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:20,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 03:13:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:20,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:20,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:20,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:20,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 03:13:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:20,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-18 03:13:20,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:20,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46423361] [2021-12-18 03:13:20,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46423361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:20,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:20,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:13:20,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257394218] [2021-12-18 03:13:20,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:20,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:13:20,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:20,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:13:20,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:13:20,792 INFO L87 Difference]: Start difference. First operand 14212 states and 20105 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:13:22,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:22,385 INFO L93 Difference]: Finished difference Result 31500 states and 44990 transitions. [2021-12-18 03:13:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:13:22,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 176 [2021-12-18 03:13:22,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:22,436 INFO L225 Difference]: With dead ends: 31500 [2021-12-18 03:13:22,437 INFO L226 Difference]: Without dead ends: 17409 [2021-12-18 03:13:22,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:13:22,469 INFO L933 BasicCegarLoop]: 1174 mSDtfsCounter, 791 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 2817 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:22,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [855 Valid, 2817 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-18 03:13:22,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17409 states. [2021-12-18 03:13:23,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17409 to 16344. [2021-12-18 03:13:23,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16344 states, 13413 states have (on average 1.4005069708491762) internal successors, (18785), 13596 states have internal predecessors, (18785), 2187 states have call successors, (2187), 778 states have call predecessors, (2187), 743 states have return successors, (2133), 2104 states have call predecessors, (2133), 2133 states have call successors, (2133) [2021-12-18 03:13:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16344 states to 16344 states and 23105 transitions. [2021-12-18 03:13:23,079 INFO L78 Accepts]: Start accepts. Automaton has 16344 states and 23105 transitions. Word has length 176 [2021-12-18 03:13:23,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:23,080 INFO L470 AbstractCegarLoop]: Abstraction has 16344 states and 23105 transitions. [2021-12-18 03:13:23,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:13:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 16344 states and 23105 transitions. [2021-12-18 03:13:23,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-18 03:13:23,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:23,087 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:13:23,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-18 03:13:23,088 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:23,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:23,088 INFO L85 PathProgramCache]: Analyzing trace with hash 275783491, now seen corresponding path program 1 times [2021-12-18 03:13:23,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:23,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148209995] [2021-12-18 03:13:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:23,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:23,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:13:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:23,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:13:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 03:13:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:23,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:23,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:23,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-18 03:13:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:23,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-18 03:13:23,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:23,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148209995] [2021-12-18 03:13:23,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148209995] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:23,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:23,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:13:23,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801933131] [2021-12-18 03:13:23,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:23,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:13:23,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:23,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:13:23,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:13:23,444 INFO L87 Difference]: Start difference. First operand 16344 states and 23105 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:13:24,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:24,931 INFO L93 Difference]: Finished difference Result 35893 states and 51197 transitions. [2021-12-18 03:13:24,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:13:24,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 179 [2021-12-18 03:13:24,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:24,995 INFO L225 Difference]: With dead ends: 35893 [2021-12-18 03:13:24,995 INFO L226 Difference]: Without dead ends: 19670 [2021-12-18 03:13:25,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:13:25,036 INFO L933 BasicCegarLoop]: 1173 mSDtfsCounter, 792 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:25,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 2814 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-18 03:13:25,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19670 states. [2021-12-18 03:13:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19670 to 18476. [2021-12-18 03:13:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18476 states, 15176 states have (on average 1.3993147074327885) internal successors, (21236), 15380 states have internal predecessors, (21236), 2463 states have call successors, (2463), 874 states have call predecessors, (2463), 836 states have return successors, (2406), 2374 states have call predecessors, (2406), 2406 states have call successors, (2406) [2021-12-18 03:13:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18476 states to 18476 states and 26105 transitions. [2021-12-18 03:13:25,782 INFO L78 Accepts]: Start accepts. Automaton has 18476 states and 26105 transitions. Word has length 179 [2021-12-18 03:13:25,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:25,782 INFO L470 AbstractCegarLoop]: Abstraction has 18476 states and 26105 transitions. [2021-12-18 03:13:25,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:13:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 18476 states and 26105 transitions. [2021-12-18 03:13:25,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-18 03:13:25,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:25,805 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:13:25,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-18 03:13:25,806 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:25,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:25,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1241683776, now seen corresponding path program 1 times [2021-12-18 03:13:25,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:25,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221165153] [2021-12-18 03:13:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:25,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:13:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:13:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 03:13:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 03:13:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:26,160 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-18 03:13:26,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:26,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221165153] [2021-12-18 03:13:26,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221165153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:26,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:26,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:13:26,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774796643] [2021-12-18 03:13:26,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:26,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:13:26,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:26,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:13:26,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:13:26,163 INFO L87 Difference]: Start difference. First operand 18476 states and 26105 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:13:27,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:27,849 INFO L93 Difference]: Finished difference Result 40286 states and 57404 transitions. [2021-12-18 03:13:27,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:13:27,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 180 [2021-12-18 03:13:27,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:27,921 INFO L225 Difference]: With dead ends: 40286 [2021-12-18 03:13:27,921 INFO L226 Difference]: Without dead ends: 21931 [2021-12-18 03:13:27,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:13:27,963 INFO L933 BasicCegarLoop]: 1174 mSDtfsCounter, 625 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 3424 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:27,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 3424 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-18 03:13:27,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21931 states. [2021-12-18 03:13:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21931 to 20608. [2021-12-18 03:13:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20608 states, 16939 states have (on average 1.3983706240037783) internal successors, (23687), 17164 states have internal predecessors, (23687), 2739 states have call successors, (2739), 970 states have call predecessors, (2739), 929 states have return successors, (2679), 2644 states have call predecessors, (2679), 2679 states have call successors, (2679) [2021-12-18 03:13:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20608 states to 20608 states and 29105 transitions. [2021-12-18 03:13:28,820 INFO L78 Accepts]: Start accepts. Automaton has 20608 states and 29105 transitions. Word has length 180 [2021-12-18 03:13:28,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:28,820 INFO L470 AbstractCegarLoop]: Abstraction has 20608 states and 29105 transitions. [2021-12-18 03:13:28,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:13:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 20608 states and 29105 transitions. [2021-12-18 03:13:28,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-18 03:13:28,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:28,829 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 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] [2021-12-18 03:13:28,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-18 03:13:28,829 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:28,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:28,830 INFO L85 PathProgramCache]: Analyzing trace with hash 59527469, now seen corresponding path program 1 times [2021-12-18 03:13:28,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:28,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56940837] [2021-12-18 03:13:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:28,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:13:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:13:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:13:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 03:13:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 03:13:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-18 03:13:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-18 03:13:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-18 03:13:29,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:29,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56940837] [2021-12-18 03:13:29,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56940837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:29,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:29,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:13:29,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151551239] [2021-12-18 03:13:29,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:29,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:13:29,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:29,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:13:29,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:13:29,173 INFO L87 Difference]: Start difference. First operand 20608 states and 29105 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-18 03:13:30,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:30,588 INFO L93 Difference]: Finished difference Result 45023 states and 63526 transitions. [2021-12-18 03:13:30,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:13:30,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 182 [2021-12-18 03:13:30,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:30,657 INFO L225 Difference]: With dead ends: 45023 [2021-12-18 03:13:30,657 INFO L226 Difference]: Without dead ends: 24536 [2021-12-18 03:13:30,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:13:30,697 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 1076 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:30,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1111 Valid, 1988 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 03:13:30,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24536 states. [2021-12-18 03:13:31,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24536 to 22935. [2021-12-18 03:13:31,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22935 states, 19052 states have (on average 1.3963363426411926) internal successors, (26603), 19289 states have internal predecessors, (26603), 2763 states have call successors, (2763), 1164 states have call predecessors, (2763), 1119 states have return successors, (2691), 2652 states have call predecessors, (2691), 2691 states have call successors, (2691) [2021-12-18 03:13:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22935 states to 22935 states and 32057 transitions. [2021-12-18 03:13:31,531 INFO L78 Accepts]: Start accepts. Automaton has 22935 states and 32057 transitions. Word has length 182 [2021-12-18 03:13:31,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:31,531 INFO L470 AbstractCegarLoop]: Abstraction has 22935 states and 32057 transitions. [2021-12-18 03:13:31,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-18 03:13:31,531 INFO L276 IsEmpty]: Start isEmpty. Operand 22935 states and 32057 transitions. [2021-12-18 03:13:31,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-18 03:13:31,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:31,538 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:13:31,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-18 03:13:31,538 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:31,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:31,539 INFO L85 PathProgramCache]: Analyzing trace with hash -791574275, now seen corresponding path program 1 times [2021-12-18 03:13:31,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:31,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818287589] [2021-12-18 03:13:31,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:31,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:13:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:13:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:13:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 03:13:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 03:13:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-18 03:13:31,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:31,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818287589] [2021-12-18 03:13:31,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818287589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:31,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:31,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:13:31,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167969268] [2021-12-18 03:13:31,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:31,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:13:31,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:31,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:13:31,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:13:31,889 INFO L87 Difference]: Start difference. First operand 22935 states and 32057 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 03:13:33,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:33,964 INFO L93 Difference]: Finished difference Result 49751 states and 69969 transitions. [2021-12-18 03:13:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:13:33,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 182 [2021-12-18 03:13:33,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:34,052 INFO L225 Difference]: With dead ends: 49751 [2021-12-18 03:13:34,052 INFO L226 Difference]: Without dead ends: 26937 [2021-12-18 03:13:34,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:13:34,087 INFO L933 BasicCegarLoop]: 1088 mSDtfsCounter, 658 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:34,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 3161 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-18 03:13:34,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26937 states. [2021-12-18 03:13:34,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26937 to 25273. [2021-12-18 03:13:34,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25273 states, 21001 states have (on average 1.3952668920527593) internal successors, (29302), 21259 states have internal predecessors, (29302), 3039 states have call successors, (3039), 1280 states have call predecessors, (3039), 1232 states have return successors, (2964), 2922 states have call predecessors, (2964), 2964 states have call successors, (2964) [2021-12-18 03:13:34,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25273 states to 25273 states and 35305 transitions. [2021-12-18 03:13:34,890 INFO L78 Accepts]: Start accepts. Automaton has 25273 states and 35305 transitions. Word has length 182 [2021-12-18 03:13:34,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:34,891 INFO L470 AbstractCegarLoop]: Abstraction has 25273 states and 35305 transitions. [2021-12-18 03:13:34,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 03:13:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 25273 states and 35305 transitions. [2021-12-18 03:13:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-18 03:13:34,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:34,897 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:13:34,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-18 03:13:34,897 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:34,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:34,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1820929364, now seen corresponding path program 1 times [2021-12-18 03:13:34,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:34,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5994115] [2021-12-18 03:13:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:34,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:35,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:35,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:35,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:13:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:35,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:35,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:13:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:35,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 03:13:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:35,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:35,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:35,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:35,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 03:13:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-18 03:13:35,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:35,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5994115] [2021-12-18 03:13:35,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5994115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:35,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:35,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:13:35,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106941723] [2021-12-18 03:13:35,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:35,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:13:35,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:13:35,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:13:35,219 INFO L87 Difference]: Start difference. First operand 25273 states and 35305 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:13:37,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:37,372 INFO L93 Difference]: Finished difference Result 54576 states and 76686 transitions. [2021-12-18 03:13:37,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:13:37,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 183 [2021-12-18 03:13:37,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:37,446 INFO L225 Difference]: With dead ends: 54576 [2021-12-18 03:13:37,446 INFO L226 Difference]: Without dead ends: 29424 [2021-12-18 03:13:37,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:13:37,483 INFO L933 BasicCegarLoop]: 1088 mSDtfsCounter, 657 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:37,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 3161 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 03:13:37,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29424 states. [2021-12-18 03:13:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29424 to 27611. [2021-12-18 03:13:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27611 states, 22950 states have (on average 1.3943790849673203) internal successors, (32001), 23229 states have internal predecessors, (32001), 3315 states have call successors, (3315), 1396 states have call predecessors, (3315), 1345 states have return successors, (3237), 3192 states have call predecessors, (3237), 3237 states have call successors, (3237) [2021-12-18 03:13:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27611 states to 27611 states and 38553 transitions. [2021-12-18 03:13:38,397 INFO L78 Accepts]: Start accepts. Automaton has 27611 states and 38553 transitions. Word has length 183 [2021-12-18 03:13:38,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:38,397 INFO L470 AbstractCegarLoop]: Abstraction has 27611 states and 38553 transitions. [2021-12-18 03:13:38,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:13:38,398 INFO L276 IsEmpty]: Start isEmpty. Operand 27611 states and 38553 transitions. [2021-12-18 03:13:38,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-18 03:13:38,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:38,404 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:13:38,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-18 03:13:38,404 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:38,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:38,405 INFO L85 PathProgramCache]: Analyzing trace with hash 243059156, now seen corresponding path program 1 times [2021-12-18 03:13:38,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:38,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384573315] [2021-12-18 03:13:38,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:38,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:13:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:13:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:13:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:13:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 03:13:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-12-18 03:13:38,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:38,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384573315] [2021-12-18 03:13:38,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384573315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:38,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:38,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:13:38,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500557859] [2021-12-18 03:13:38,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:38,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:13:38,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:38,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:13:38,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:13:38,760 INFO L87 Difference]: Start difference. First operand 27611 states and 38553 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 03:13:41,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:41,057 INFO L93 Difference]: Finished difference Result 59401 states and 83403 transitions. [2021-12-18 03:13:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:13:41,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 187 [2021-12-18 03:13:41,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:41,134 INFO L225 Difference]: With dead ends: 59401 [2021-12-18 03:13:41,134 INFO L226 Difference]: Without dead ends: 31911 [2021-12-18 03:13:41,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:13:41,177 INFO L933 BasicCegarLoop]: 1090 mSDtfsCounter, 995 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:41,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1060 Valid, 2621 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-18 03:13:41,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31911 states. [2021-12-18 03:13:42,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31911 to 29949. [2021-12-18 03:13:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29949 states, 24899 states have (on average 1.393630266275754) internal successors, (34700), 25199 states have internal predecessors, (34700), 3591 states have call successors, (3591), 1512 states have call predecessors, (3591), 1458 states have return successors, (3510), 3462 states have call predecessors, (3510), 3510 states have call successors, (3510) [2021-12-18 03:13:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29949 states to 29949 states and 41801 transitions. [2021-12-18 03:13:42,137 INFO L78 Accepts]: Start accepts. Automaton has 29949 states and 41801 transitions. Word has length 187 [2021-12-18 03:13:42,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:42,137 INFO L470 AbstractCegarLoop]: Abstraction has 29949 states and 41801 transitions. [2021-12-18 03:13:42,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 03:13:42,137 INFO L276 IsEmpty]: Start isEmpty. Operand 29949 states and 41801 transitions. [2021-12-18 03:13:42,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-12-18 03:13:42,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:42,144 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:13:42,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-18 03:13:42,145 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:42,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:42,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1683307263, now seen corresponding path program 1 times [2021-12-18 03:13:42,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:42,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294634777] [2021-12-18 03:13:42,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:42,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:13:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:13:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:13:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:13:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 03:13:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-18 03:13:42,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:42,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294634777] [2021-12-18 03:13:42,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294634777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:42,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:42,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:13:42,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025142820] [2021-12-18 03:13:42,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:42,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:13:42,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:42,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:13:42,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:13:42,478 INFO L87 Difference]: Start difference. First operand 29949 states and 41801 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 03:13:44,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:44,967 INFO L93 Difference]: Finished difference Result 64441 states and 90364 transitions. [2021-12-18 03:13:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:13:44,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 192 [2021-12-18 03:13:44,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:45,059 INFO L225 Difference]: With dead ends: 64441 [2021-12-18 03:13:45,059 INFO L226 Difference]: Without dead ends: 34613 [2021-12-18 03:13:45,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:13:45,106 INFO L933 BasicCegarLoop]: 1140 mSDtfsCounter, 805 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:45,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 2773 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-18 03:13:45,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34613 states. [2021-12-18 03:13:46,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34613 to 32183. [2021-12-18 03:13:46,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32183 states, 26693 states have (on average 1.3910013861311954) internal successors, (37130), 27014 states have internal predecessors, (37130), 3897 states have call successors, (3897), 1654 states have call predecessors, (3897), 1592 states have return successors, (3813), 3757 states have call predecessors, (3813), 3813 states have call successors, (3813) [2021-12-18 03:13:46,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32183 states to 32183 states and 44840 transitions. [2021-12-18 03:13:46,243 INFO L78 Accepts]: Start accepts. Automaton has 32183 states and 44840 transitions. Word has length 192 [2021-12-18 03:13:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:46,243 INFO L470 AbstractCegarLoop]: Abstraction has 32183 states and 44840 transitions. [2021-12-18 03:13:46,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 03:13:46,244 INFO L276 IsEmpty]: Start isEmpty. Operand 32183 states and 44840 transitions. [2021-12-18 03:13:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-18 03:13:46,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:46,251 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:13:46,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-18 03:13:46,251 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:46,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:46,252 INFO L85 PathProgramCache]: Analyzing trace with hash 127661349, now seen corresponding path program 1 times [2021-12-18 03:13:46,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:46,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935568596] [2021-12-18 03:13:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:46,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:13:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:13:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:13:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:13:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:13:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 03:13:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 03:13:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 03:13:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-18 03:13:46,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:46,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935568596] [2021-12-18 03:13:46,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935568596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:46,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:46,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 03:13:46,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289719145] [2021-12-18 03:13:46,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:46,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 03:13:46,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:46,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 03:13:46,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:13:46,638 INFO L87 Difference]: Start difference. First operand 32183 states and 44840 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-18 03:13:50,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:50,065 INFO L93 Difference]: Finished difference Result 91305 states and 127453 transitions. [2021-12-18 03:13:50,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 03:13:50,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 197 [2021-12-18 03:13:50,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:50,397 INFO L225 Difference]: With dead ends: 91305 [2021-12-18 03:13:50,397 INFO L226 Difference]: Without dead ends: 59243 [2021-12-18 03:13:50,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-18 03:13:50,454 INFO L933 BasicCegarLoop]: 1179 mSDtfsCounter, 918 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 4226 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:50,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 4226 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-18 03:13:50,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59243 states. [2021-12-18 03:13:51,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59243 to 32345. [2021-12-18 03:13:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32345 states, 26855 states have (on average 1.3886427108545896) internal successors, (37292), 27176 states have internal predecessors, (37292), 3897 states have call successors, (3897), 1654 states have call predecessors, (3897), 1592 states have return successors, (3813), 3757 states have call predecessors, (3813), 3813 states have call successors, (3813) [2021-12-18 03:13:51,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32345 states to 32345 states and 45002 transitions. [2021-12-18 03:13:51,879 INFO L78 Accepts]: Start accepts. Automaton has 32345 states and 45002 transitions. Word has length 197 [2021-12-18 03:13:51,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:51,880 INFO L470 AbstractCegarLoop]: Abstraction has 32345 states and 45002 transitions. [2021-12-18 03:13:51,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-18 03:13:51,880 INFO L276 IsEmpty]: Start isEmpty. Operand 32345 states and 45002 transitions. [2021-12-18 03:13:51,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-18 03:13:51,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:51,886 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:13:51,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-18 03:13:51,886 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:51,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:51,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1418600144, now seen corresponding path program 1 times [2021-12-18 03:13:51,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:51,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407092143] [2021-12-18 03:13:51,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:51,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:13:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:13:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:13:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 03:13:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-18 03:13:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-18 03:13:52,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:52,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407092143] [2021-12-18 03:13:52,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407092143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:52,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:52,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:13:52,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613860461] [2021-12-18 03:13:52,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:52,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:13:52,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:52,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:13:52,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:13:52,226 INFO L87 Difference]: Start difference. First operand 32345 states and 45002 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 03:13:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:13:54,825 INFO L93 Difference]: Finished difference Result 69446 states and 97068 transitions. [2021-12-18 03:13:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:13:54,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 201 [2021-12-18 03:13:54,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:13:54,931 INFO L225 Difference]: With dead ends: 69446 [2021-12-18 03:13:54,932 INFO L226 Difference]: Without dead ends: 37222 [2021-12-18 03:13:54,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:13:54,986 INFO L933 BasicCegarLoop]: 1141 mSDtfsCounter, 972 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:13:54,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1038 Valid, 2708 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-18 03:13:55,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37222 states. [2021-12-18 03:13:56,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37222 to 34591. [2021-12-18 03:13:56,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34591 states, 28661 states have (on average 1.3863438121489131) internal successors, (39734), 29003 states have internal predecessors, (39734), 4203 states have call successors, (4203), 1796 states have call predecessors, (4203), 1726 states have return successors, (4116), 4052 states have call predecessors, (4116), 4116 states have call successors, (4116) [2021-12-18 03:13:56,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34591 states to 34591 states and 48053 transitions. [2021-12-18 03:13:56,351 INFO L78 Accepts]: Start accepts. Automaton has 34591 states and 48053 transitions. Word has length 201 [2021-12-18 03:13:56,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:13:56,352 INFO L470 AbstractCegarLoop]: Abstraction has 34591 states and 48053 transitions. [2021-12-18 03:13:56,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 03:13:56,352 INFO L276 IsEmpty]: Start isEmpty. Operand 34591 states and 48053 transitions. [2021-12-18 03:13:56,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-18 03:13:56,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:13:56,358 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:13:56,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-18 03:13:56,358 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:13:56,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:13:56,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1871947559, now seen corresponding path program 1 times [2021-12-18 03:13:56,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:13:56,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245388069] [2021-12-18 03:13:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:13:56,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:13:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:13:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:13:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 03:13:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:13:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:13:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 03:13:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 03:13:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 03:13:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:13:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:13:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-18 03:13:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:13:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:13:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-18 03:13:56,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:13:56,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245388069] [2021-12-18 03:13:56,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245388069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:13:56,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:13:56,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 03:13:56,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424305099] [2021-12-18 03:13:56,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:13:56,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 03:13:56,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:13:56,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 03:13:56,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-18 03:13:56,794 INFO L87 Difference]: Start difference. First operand 34591 states and 48053 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 03:13:59,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:14:01,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:14:03,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:14:03,176 INFO L93 Difference]: Finished difference Result 73980 states and 104633 transitions. [2021-12-18 03:14:03,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 03:14:03,178 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 206 [2021-12-18 03:14:03,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:14:03,299 INFO L225 Difference]: With dead ends: 73980 [2021-12-18 03:14:03,299 INFO L226 Difference]: Without dead ends: 39510 [2021-12-18 03:14:03,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-12-18 03:14:03,362 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 462 mSDsluCounter, 3659 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 300 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 4281 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-18 03:14:03,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 4281 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 1650 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-12-18 03:14:03,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39510 states. [2021-12-18 03:14:04,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39510 to 35113. [2021-12-18 03:14:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35113 states, 29096 states have (on average 1.3805677756392631) internal successors, (40169), 29438 states have internal predecessors, (40169), 4203 states have call successors, (4203), 1796 states have call predecessors, (4203), 1813 states have return successors, (4329), 4139 states have call predecessors, (4329), 4116 states have call successors, (4329) [2021-12-18 03:14:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35113 states to 35113 states and 48701 transitions. [2021-12-18 03:14:04,825 INFO L78 Accepts]: Start accepts. Automaton has 35113 states and 48701 transitions. Word has length 206 [2021-12-18 03:14:04,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:14:04,826 INFO L470 AbstractCegarLoop]: Abstraction has 35113 states and 48701 transitions. [2021-12-18 03:14:04,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 03:14:04,827 INFO L276 IsEmpty]: Start isEmpty. Operand 35113 states and 48701 transitions. [2021-12-18 03:14:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-18 03:14:04,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:14:04,831 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-12-18 03:14:04,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-18 03:14:04,832 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:14:04,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:14:04,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2090718611, now seen corresponding path program 1 times [2021-12-18 03:14:04,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:14:04,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123640052] [2021-12-18 03:14:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:04,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:14:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:05,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:05,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:05,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:14:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:05,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:14:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:05,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 03:14:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:05,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:05,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:05,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:05,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 03:14:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:05,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 44 proven. 20 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-18 03:14:05,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:14:05,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123640052] [2021-12-18 03:14:05,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123640052] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:14:05,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873222089] [2021-12-18 03:14:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:05,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:14:05,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:14:05,223 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:14:05,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 03:14:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:07,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 12535 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 03:14:07,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:14:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-18 03:14:07,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:14:07,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873222089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:14:07,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:14:07,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-18 03:14:07,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988395769] [2021-12-18 03:14:07,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:14:07,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:14:07,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:14:07,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:14:07,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:14:07,413 INFO L87 Difference]: Start difference. First operand 35113 states and 48701 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-18 03:14:08,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:14:08,325 INFO L93 Difference]: Finished difference Result 57566 states and 79939 transitions. [2021-12-18 03:14:08,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:14:08,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 200 [2021-12-18 03:14:08,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:14:08,382 INFO L225 Difference]: With dead ends: 57566 [2021-12-18 03:14:08,383 INFO L226 Difference]: Without dead ends: 22574 [2021-12-18 03:14:08,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:14:08,623 INFO L933 BasicCegarLoop]: 1150 mSDtfsCounter, 513 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 03:14:08,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 1747 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 03:14:08,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22574 states. [2021-12-18 03:14:09,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22574 to 22554. [2021-12-18 03:14:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22554 states, 18764 states have (on average 1.3753997015561714) internal successors, (25808), 19013 states have internal predecessors, (25808), 2655 states have call successors, (2655), 1144 states have call predecessors, (2655), 1134 states have return successors, (2673), 2567 states have call predecessors, (2673), 2571 states have call successors, (2673) [2021-12-18 03:14:09,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22554 states to 22554 states and 31136 transitions. [2021-12-18 03:14:09,274 INFO L78 Accepts]: Start accepts. Automaton has 22554 states and 31136 transitions. Word has length 200 [2021-12-18 03:14:09,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:14:09,275 INFO L470 AbstractCegarLoop]: Abstraction has 22554 states and 31136 transitions. [2021-12-18 03:14:09,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-18 03:14:09,275 INFO L276 IsEmpty]: Start isEmpty. Operand 22554 states and 31136 transitions. [2021-12-18 03:14:09,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-18 03:14:09,282 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:14:09,282 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-18 03:14:09,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 03:14:09,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:14:09,492 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:14:09,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:14:09,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1893320017, now seen corresponding path program 1 times [2021-12-18 03:14:09,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:14:09,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461550086] [2021-12-18 03:14:09,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:09,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:14:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:09,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:09,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:09,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:14:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:09,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:09,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:14:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:09,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 03:14:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:09,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:09,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:09,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:09,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-12-18 03:14:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-18 03:14:09,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:14:09,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461550086] [2021-12-18 03:14:09,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461550086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:14:09,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:14:09,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:14:09,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367893544] [2021-12-18 03:14:09,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:14:09,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:14:09,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:14:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:14:09,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:14:09,930 INFO L87 Difference]: Start difference. First operand 22554 states and 31136 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:14:11,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:14:11,738 INFO L93 Difference]: Finished difference Result 46482 states and 64314 transitions. [2021-12-18 03:14:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:14:11,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 218 [2021-12-18 03:14:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:14:11,810 INFO L225 Difference]: With dead ends: 46482 [2021-12-18 03:14:11,811 INFO L226 Difference]: Without dead ends: 24049 [2021-12-18 03:14:11,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:14:11,868 INFO L933 BasicCegarLoop]: 1126 mSDtfsCounter, 810 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:14:11,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 2752 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-18 03:14:11,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24049 states. [2021-12-18 03:14:12,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24049 to 22189. [2021-12-18 03:14:12,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22189 states, 18345 states have (on average 1.3708367402562005) internal successors, (25148), 18582 states have internal predecessors, (25148), 2704 states have call successors, (2704), 1141 states have call predecessors, (2704), 1139 states have return successors, (2725), 2648 states have call predecessors, (2725), 2645 states have call successors, (2725) [2021-12-18 03:14:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22189 states to 22189 states and 30577 transitions. [2021-12-18 03:14:12,756 INFO L78 Accepts]: Start accepts. Automaton has 22189 states and 30577 transitions. Word has length 218 [2021-12-18 03:14:12,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:14:12,757 INFO L470 AbstractCegarLoop]: Abstraction has 22189 states and 30577 transitions. [2021-12-18 03:14:12,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-18 03:14:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 22189 states and 30577 transitions. [2021-12-18 03:14:12,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-12-18 03:14:12,793 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:14:12,793 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 03:14:12,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-18 03:14:12,793 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:14:12,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:14:12,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1485035883, now seen corresponding path program 1 times [2021-12-18 03:14:12,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:14:12,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685650224] [2021-12-18 03:14:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:12,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:14:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:14:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:14:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 03:14:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 03:14:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-18 03:14:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-12-18 03:14:13,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:14:13,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685650224] [2021-12-18 03:14:13,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685650224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:14:13,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:14:13,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:14:13,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594260803] [2021-12-18 03:14:13,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:14:13,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:14:13,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:14:13,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:14:13,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:14:13,178 INFO L87 Difference]: Start difference. First operand 22189 states and 30577 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-18 03:14:15,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:14:15,035 INFO L93 Difference]: Finished difference Result 45487 states and 62809 transitions. [2021-12-18 03:14:15,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:14:15,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 229 [2021-12-18 03:14:15,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:14:15,101 INFO L225 Difference]: With dead ends: 45487 [2021-12-18 03:14:15,102 INFO L226 Difference]: Without dead ends: 23419 [2021-12-18 03:14:15,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:14:15,145 INFO L933 BasicCegarLoop]: 1073 mSDtfsCounter, 812 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:14:15,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 2591 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-18 03:14:15,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23419 states. [2021-12-18 03:14:15,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23419 to 22188. [2021-12-18 03:14:15,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22188 states, 18344 states have (on average 1.3693305713039685) internal successors, (25119), 18581 states have internal predecessors, (25119), 2704 states have call successors, (2704), 1141 states have call predecessors, (2704), 1139 states have return successors, (2725), 2648 states have call predecessors, (2725), 2645 states have call successors, (2725) [2021-12-18 03:14:16,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22188 states to 22188 states and 30548 transitions. [2021-12-18 03:14:16,019 INFO L78 Accepts]: Start accepts. Automaton has 22188 states and 30548 transitions. Word has length 229 [2021-12-18 03:14:16,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:14:16,035 INFO L470 AbstractCegarLoop]: Abstraction has 22188 states and 30548 transitions. [2021-12-18 03:14:16,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-18 03:14:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand 22188 states and 30548 transitions. [2021-12-18 03:14:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-12-18 03:14:16,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:14:16,044 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 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, 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] [2021-12-18 03:14:16,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-18 03:14:16,044 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:14:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:14:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash 459704368, now seen corresponding path program 1 times [2021-12-18 03:14:16,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:14:16,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349541583] [2021-12-18 03:14:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:16,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:14:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:14:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:14:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 03:14:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-18 03:14:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-18 03:14:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-12-18 03:14:16,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:14:16,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349541583] [2021-12-18 03:14:16,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349541583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:14:16,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:14:16,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 03:14:16,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114807761] [2021-12-18 03:14:16,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:14:16,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 03:14:16,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:14:16,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 03:14:16,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:14:16,426 INFO L87 Difference]: Start difference. First operand 22188 states and 30548 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-18 03:14:17,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:14:17,983 INFO L93 Difference]: Finished difference Result 23722 states and 32715 transitions. [2021-12-18 03:14:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:14:17,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 231 [2021-12-18 03:14:17,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:14:18,059 INFO L225 Difference]: With dead ends: 23722 [2021-12-18 03:14:18,059 INFO L226 Difference]: Without dead ends: 22025 [2021-12-18 03:14:18,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:14:18,075 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 1177 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 03:14:18,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1223 Valid, 2316 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-18 03:14:18,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22025 states. [2021-12-18 03:14:18,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22025 to 20919. [2021-12-18 03:14:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20919 states, 17309 states have (on average 1.3688254665203075) internal successors, (23693), 17531 states have internal predecessors, (23693), 2534 states have call successors, (2534), 1075 states have call predecessors, (2534), 1075 states have return successors, (2549), 2486 states have call predecessors, (2549), 2481 states have call successors, (2549) [2021-12-18 03:14:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20919 states to 20919 states and 28776 transitions. [2021-12-18 03:14:18,899 INFO L78 Accepts]: Start accepts. Automaton has 20919 states and 28776 transitions. Word has length 231 [2021-12-18 03:14:18,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:14:18,900 INFO L470 AbstractCegarLoop]: Abstraction has 20919 states and 28776 transitions. [2021-12-18 03:14:18,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-18 03:14:18,900 INFO L276 IsEmpty]: Start isEmpty. Operand 20919 states and 28776 transitions. [2021-12-18 03:14:18,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-18 03:14:18,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:14:18,931 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:14:18,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-18 03:14:18,931 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:14:18,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:14:18,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1795424421, now seen corresponding path program 1 times [2021-12-18 03:14:18,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:14:18,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380705966] [2021-12-18 03:14:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:18,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:14:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:14:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:14:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:14:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 03:14:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 03:14:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 03:14:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-12-18 03:14:19,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:14:19,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380705966] [2021-12-18 03:14:19,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380705966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:14:19,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:14:19,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 03:14:19,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493200405] [2021-12-18 03:14:19,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:14:19,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 03:14:19,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:14:19,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 03:14:19,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:14:19,284 INFO L87 Difference]: Start difference. First operand 20919 states and 28776 transitions. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 03:14:21,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:14:21,053 INFO L93 Difference]: Finished difference Result 22329 states and 30742 transitions. [2021-12-18 03:14:21,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:14:21,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 235 [2021-12-18 03:14:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:14:21,100 INFO L225 Difference]: With dead ends: 22329 [2021-12-18 03:14:21,100 INFO L226 Difference]: Without dead ends: 20632 [2021-12-18 03:14:21,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:14:21,116 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 1176 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:14:21,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 2311 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-18 03:14:21,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20632 states. [2021-12-18 03:14:21,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20632 to 19650. [2021-12-18 03:14:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19650 states, 16274 states have (on average 1.368256114046946) internal successors, (22267), 16481 states have internal predecessors, (22267), 2364 states have call successors, (2364), 1009 states have call predecessors, (2364), 1011 states have return successors, (2373), 2324 states have call predecessors, (2373), 2317 states have call successors, (2373) [2021-12-18 03:14:21,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19650 states to 19650 states and 27004 transitions. [2021-12-18 03:14:21,954 INFO L78 Accepts]: Start accepts. Automaton has 19650 states and 27004 transitions. Word has length 235 [2021-12-18 03:14:21,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:14:21,954 INFO L470 AbstractCegarLoop]: Abstraction has 19650 states and 27004 transitions. [2021-12-18 03:14:21,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 03:14:21,955 INFO L276 IsEmpty]: Start isEmpty. Operand 19650 states and 27004 transitions. [2021-12-18 03:14:21,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-18 03:14:21,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:14:21,963 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2021-12-18 03:14:21,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-18 03:14:21,964 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:14:21,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:14:21,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2144248759, now seen corresponding path program 1 times [2021-12-18 03:14:21,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:14:21,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861723773] [2021-12-18 03:14:21,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:21,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:14:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:14:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:14:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 03:14:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-18 03:14:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-18 03:14:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:22,411 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-12-18 03:14:22,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:14:22,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861723773] [2021-12-18 03:14:22,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861723773] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:14:22,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:14:22,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 03:14:22,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591362259] [2021-12-18 03:14:22,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:14:22,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 03:14:22,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:14:22,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 03:14:22,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:14:22,413 INFO L87 Difference]: Start difference. First operand 19650 states and 27004 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-18 03:14:23,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:14:23,921 INFO L93 Difference]: Finished difference Result 20905 states and 28737 transitions. [2021-12-18 03:14:23,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:14:23,921 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), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 233 [2021-12-18 03:14:23,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:14:23,966 INFO L225 Difference]: With dead ends: 20905 [2021-12-18 03:14:23,966 INFO L226 Difference]: Without dead ends: 18132 [2021-12-18 03:14:23,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:14:23,980 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 1003 mSDsluCounter, 1697 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 03:14:23,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1049 Valid, 2338 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-18 03:14:23,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18132 states. [2021-12-18 03:14:24,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18132 to 17325. [2021-12-18 03:14:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17325 states, 14241 states have (on average 1.3614914682957657) internal successors, (19389), 14433 states have internal predecessors, (19389), 2163 states have call successors, (2163), 914 states have call predecessors, (2163), 920 states have return successors, (2168), 2133 states have call predecessors, (2168), 2124 states have call successors, (2168) [2021-12-18 03:14:24,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17325 states to 17325 states and 23720 transitions. [2021-12-18 03:14:24,672 INFO L78 Accepts]: Start accepts. Automaton has 17325 states and 23720 transitions. Word has length 233 [2021-12-18 03:14:24,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:14:24,672 INFO L470 AbstractCegarLoop]: Abstraction has 17325 states and 23720 transitions. [2021-12-18 03:14:24,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-18 03:14:24,673 INFO L276 IsEmpty]: Start isEmpty. Operand 17325 states and 23720 transitions. [2021-12-18 03:14:24,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-12-18 03:14:24,679 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:14:24,680 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 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, 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] [2021-12-18 03:14:24,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-18 03:14:24,680 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:14:24,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:14:24,680 INFO L85 PathProgramCache]: Analyzing trace with hash -622315199, now seen corresponding path program 1 times [2021-12-18 03:14:24,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:14:24,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414925788] [2021-12-18 03:14:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:24,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:14:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:24,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:24,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:24,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:14:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:24,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:14:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:24,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:24,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:14:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:24,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:14:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-18 03:14:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 03:14:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 03:14:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-18 03:14:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 03:14:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-18 03:14:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 03:14:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-12-18 03:14:25,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:14:25,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414925788] [2021-12-18 03:14:25,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414925788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:14:25,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:14:25,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 03:14:25,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461634436] [2021-12-18 03:14:25,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:14:25,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 03:14:25,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:14:25,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 03:14:25,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:14:25,067 INFO L87 Difference]: Start difference. First operand 17325 states and 23720 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 03:14:28,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:14:28,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:14:28,916 INFO L93 Difference]: Finished difference Result 36464 states and 50199 transitions. [2021-12-18 03:14:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:14:28,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 249 [2021-12-18 03:14:28,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:14:28,962 INFO L225 Difference]: With dead ends: 36464 [2021-12-18 03:14:28,963 INFO L226 Difference]: Without dead ends: 19260 [2021-12-18 03:14:28,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-18 03:14:28,986 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 846 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 558 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:14:28,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 2021 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 635 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2021-12-18 03:14:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19260 states. [2021-12-18 03:14:29,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19260 to 17401. [2021-12-18 03:14:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17401 states, 14317 states have (on average 1.3601313124257874) internal successors, (19473), 14509 states have internal predecessors, (19473), 2163 states have call successors, (2163), 914 states have call predecessors, (2163), 920 states have return successors, (2168), 2133 states have call predecessors, (2168), 2124 states have call successors, (2168) [2021-12-18 03:14:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17401 states to 17401 states and 23804 transitions. [2021-12-18 03:14:29,622 INFO L78 Accepts]: Start accepts. Automaton has 17401 states and 23804 transitions. Word has length 249 [2021-12-18 03:14:29,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:14:29,623 INFO L470 AbstractCegarLoop]: Abstraction has 17401 states and 23804 transitions. [2021-12-18 03:14:29,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 03:14:29,623 INFO L276 IsEmpty]: Start isEmpty. Operand 17401 states and 23804 transitions. [2021-12-18 03:14:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-12-18 03:14:29,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:14:29,630 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 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, 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] [2021-12-18 03:14:29,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-18 03:14:29,631 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:14:29,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:14:29,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2046584040, now seen corresponding path program 1 times [2021-12-18 03:14:29,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:14:29,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640640848] [2021-12-18 03:14:29,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:29,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:14:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:29,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:29,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:14:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:14:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:14:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:14:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-18 03:14:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 03:14:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 03:14:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 03:14:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-18 03:14:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-18 03:14:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-18 03:14:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 03:14:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-12-18 03:14:30,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:14:30,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640640848] [2021-12-18 03:14:30,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640640848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:14:30,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:14:30,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 03:14:30,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606045901] [2021-12-18 03:14:30,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:14:30,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 03:14:30,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:14:30,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 03:14:30,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:14:30,068 INFO L87 Difference]: Start difference. First operand 17401 states and 23804 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-12-18 03:14:33,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:14:33,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:14:33,756 INFO L93 Difference]: Finished difference Result 36364 states and 49985 transitions. [2021-12-18 03:14:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:14:33,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 3 states have internal predecessors, (156), 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 253 [2021-12-18 03:14:33,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:14:33,807 INFO L225 Difference]: With dead ends: 36364 [2021-12-18 03:14:33,808 INFO L226 Difference]: Without dead ends: 19084 [2021-12-18 03:14:33,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-18 03:14:33,849 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 638 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 413 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:14:33,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 2116 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 598 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2021-12-18 03:14:33,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19084 states. [2021-12-18 03:14:34,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19084 to 17431. [2021-12-18 03:14:34,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17431 states, 14347 states have (on average 1.359378267233568) internal successors, (19503), 14539 states have internal predecessors, (19503), 2163 states have call successors, (2163), 914 states have call predecessors, (2163), 920 states have return successors, (2168), 2133 states have call predecessors, (2168), 2124 states have call successors, (2168) [2021-12-18 03:14:34,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17431 states to 17431 states and 23834 transitions. [2021-12-18 03:14:34,588 INFO L78 Accepts]: Start accepts. Automaton has 17431 states and 23834 transitions. Word has length 253 [2021-12-18 03:14:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:14:34,588 INFO L470 AbstractCegarLoop]: Abstraction has 17431 states and 23834 transitions. [2021-12-18 03:14:34,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-12-18 03:14:34,591 INFO L276 IsEmpty]: Start isEmpty. Operand 17431 states and 23834 transitions. [2021-12-18 03:14:34,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-12-18 03:14:34,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:14:34,599 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 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, 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] [2021-12-18 03:14:34,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-18 03:14:34,600 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:14:34,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:14:34,600 INFO L85 PathProgramCache]: Analyzing trace with hash 928772617, now seen corresponding path program 1 times [2021-12-18 03:14:34,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:14:34,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777767374] [2021-12-18 03:14:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:34,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:14:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:14:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:14:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:14:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:14:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-18 03:14:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 03:14:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 03:14:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 03:14:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 03:14:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-18 03:14:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-18 03:14:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-12-18 03:14:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 03:14:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-12-18 03:14:35,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:14:35,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777767374] [2021-12-18 03:14:35,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777767374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:14:35,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:14:35,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 03:14:35,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610378130] [2021-12-18 03:14:35,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:14:35,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 03:14:35,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:14:35,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 03:14:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:14:35,085 INFO L87 Difference]: Start difference. First operand 17431 states and 23834 transitions. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 5 states have internal predecessors, (160), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 03:14:38,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:14:41,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:14:42,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:14:42,723 INFO L93 Difference]: Finished difference Result 56877 states and 79102 transitions. [2021-12-18 03:14:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-18 03:14:42,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 5 states have internal predecessors, (160), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 261 [2021-12-18 03:14:42,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:14:42,832 INFO L225 Difference]: With dead ends: 56877 [2021-12-18 03:14:42,832 INFO L226 Difference]: Without dead ends: 39567 [2021-12-18 03:14:42,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-12-18 03:14:42,875 INFO L933 BasicCegarLoop]: 1276 mSDtfsCounter, 1394 mSDsluCounter, 4867 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 631 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 6143 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:14:42,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1457 Valid, 6143 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 2068 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2021-12-18 03:14:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39567 states. [2021-12-18 03:14:43,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39567 to 17447. [2021-12-18 03:14:43,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17447 states, 14347 states have (on average 1.357984247577891) internal successors, (19483), 14539 states have internal predecessors, (19483), 2179 states have call successors, (2179), 914 states have call predecessors, (2179), 920 states have return successors, (2184), 2149 states have call predecessors, (2184), 2140 states have call successors, (2184) [2021-12-18 03:14:43,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17447 states to 17447 states and 23846 transitions. [2021-12-18 03:14:43,798 INFO L78 Accepts]: Start accepts. Automaton has 17447 states and 23846 transitions. Word has length 261 [2021-12-18 03:14:43,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:14:43,798 INFO L470 AbstractCegarLoop]: Abstraction has 17447 states and 23846 transitions. [2021-12-18 03:14:43,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 5 states have internal predecessors, (160), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 03:14:43,799 INFO L276 IsEmpty]: Start isEmpty. Operand 17447 states and 23846 transitions. [2021-12-18 03:14:43,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-12-18 03:14:43,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:14:43,805 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:14:43,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-18 03:14:43,806 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:14:43,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:14:43,806 INFO L85 PathProgramCache]: Analyzing trace with hash -144101961, now seen corresponding path program 1 times [2021-12-18 03:14:43,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:14:43,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364386979] [2021-12-18 03:14:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:43,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:14:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:14:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:14:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:14:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 03:14:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 03:14:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 03:14:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 03:14:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:14:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 03:14:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:14:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 03:14:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 03:14:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 03:14:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 03:14:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 03:14:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 03:14:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-18 03:14:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2021-12-18 03:14:44,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:14:44,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364386979] [2021-12-18 03:14:44,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364386979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:14:44,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:14:44,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 03:14:44,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095095228] [2021-12-18 03:14:44,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:14:44,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 03:14:44,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:14:44,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 03:14:44,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:14:44,293 INFO L87 Difference]: Start difference. First operand 17447 states and 23846 transitions. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-18 03:14:47,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:14:48,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:14:48,646 INFO L93 Difference]: Finished difference Result 36380 states and 50091 transitions. [2021-12-18 03:14:48,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 03:14:48,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 311 [2021-12-18 03:14:48,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:14:48,698 INFO L225 Difference]: With dead ends: 36380 [2021-12-18 03:14:48,699 INFO L226 Difference]: Without dead ends: 19054 [2021-12-18 03:14:48,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:14:48,729 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 685 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 426 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-18 03:14:48,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 2607 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 788 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-12-18 03:14:48,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19054 states. [2021-12-18 03:14:49,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19054 to 17447. [2021-12-18 03:14:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17447 states, 14347 states have (on average 1.3543597964731302) internal successors, (19431), 14539 states have internal predecessors, (19431), 2179 states have call successors, (2179), 914 states have call predecessors, (2179), 920 states have return successors, (2184), 2149 states have call predecessors, (2184), 2140 states have call successors, (2184) [2021-12-18 03:14:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17447 states to 17447 states and 23794 transitions. [2021-12-18 03:14:49,548 INFO L78 Accepts]: Start accepts. Automaton has 17447 states and 23794 transitions. Word has length 311 [2021-12-18 03:14:49,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:14:49,549 INFO L470 AbstractCegarLoop]: Abstraction has 17447 states and 23794 transitions. [2021-12-18 03:14:49,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-18 03:14:49,549 INFO L276 IsEmpty]: Start isEmpty. Operand 17447 states and 23794 transitions. [2021-12-18 03:14:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2021-12-18 03:14:49,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:14:49,565 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:14:49,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-18 03:14:49,565 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:14:49,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:14:49,565 INFO L85 PathProgramCache]: Analyzing trace with hash 859190550, now seen corresponding path program 1 times [2021-12-18 03:14:49,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:14:49,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472492685] [2021-12-18 03:14:49,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:49,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:14:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:14:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:14:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:14:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 03:14:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 03:14:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 03:14:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 03:14:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:49,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 03:14:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 03:14:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:14:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 03:14:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 03:14:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 03:14:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 03:14:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 03:14:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 03:14:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:14:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 03:14:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:14:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 03:14:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-18 03:14:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 03:14:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-18 03:14:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 03:14:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-12-18 03:14:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2021-12-18 03:14:50,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:14:50,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472492685] [2021-12-18 03:14:50,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472492685] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:14:50,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916750080] [2021-12-18 03:14:50,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:50,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:14:50,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:14:50,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:14:50,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 03:14:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:51,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 13472 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 03:14:51,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:14:52,456 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2021-12-18 03:14:52,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:14:52,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916750080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:14:52,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:14:52,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2021-12-18 03:14:52,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038856554] [2021-12-18 03:14:52,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:14:52,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:14:52,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:14:52,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:14:52,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-18 03:14:52,458 INFO L87 Difference]: Start difference. First operand 17447 states and 23794 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-18 03:14:54,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:14:55,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:14:55,372 INFO L93 Difference]: Finished difference Result 36005 states and 49177 transitions. [2021-12-18 03:14:55,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 03:14:55,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) Word has length 418 [2021-12-18 03:14:55,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:14:55,409 INFO L225 Difference]: With dead ends: 36005 [2021-12-18 03:14:55,409 INFO L226 Difference]: Without dead ends: 18679 [2021-12-18 03:14:55,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:14:55,432 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 35 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:14:55,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 3335 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 121 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-12-18 03:14:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18679 states. [2021-12-18 03:14:56,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18679 to 17711. [2021-12-18 03:14:56,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17711 states, 14567 states have (on average 1.3580696093910893) internal successors, (19783), 14759 states have internal predecessors, (19783), 2223 states have call successors, (2223), 914 states have call predecessors, (2223), 920 states have return successors, (2228), 2193 states have call predecessors, (2228), 2184 states have call successors, (2228) [2021-12-18 03:14:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17711 states to 17711 states and 24234 transitions. [2021-12-18 03:14:56,105 INFO L78 Accepts]: Start accepts. Automaton has 17711 states and 24234 transitions. Word has length 418 [2021-12-18 03:14:56,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:14:56,105 INFO L470 AbstractCegarLoop]: Abstraction has 17711 states and 24234 transitions. [2021-12-18 03:14:56,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-18 03:14:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 17711 states and 24234 transitions. [2021-12-18 03:14:56,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-12-18 03:14:56,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:14:56,113 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:14:56,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 03:14:56,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:14:56,340 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:14:56,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:14:56,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1807347799, now seen corresponding path program 1 times [2021-12-18 03:14:56,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:14:56,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894479] [2021-12-18 03:14:56,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:56,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:14:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:14:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:14:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 03:14:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:14:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:14:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 03:14:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 03:14:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 03:14:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 03:14:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 03:14:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:14:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 03:14:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 03:14:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 03:14:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 03:14:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 03:14:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 03:14:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:14:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 03:14:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:14:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 03:14:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-18 03:14:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 03:14:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-18 03:14:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 03:14:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 03:14:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:14:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-18 03:14:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2021-12-18 03:14:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:14:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2021-12-18 03:14:56,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:14:56,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894479] [2021-12-18 03:14:56,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894479] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:14:56,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016958936] [2021-12-18 03:14:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:14:56,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:14:56,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:14:56,876 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:14:56,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 03:14:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:14:58,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 13573 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 03:14:58,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:14:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2021-12-18 03:14:59,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 03:14:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2021-12-18 03:14:59,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016958936] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 03:14:59,968 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 03:14:59,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 11 [2021-12-18 03:14:59,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176023825] [2021-12-18 03:14:59,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 03:14:59,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 03:14:59,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:14:59,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 03:14:59,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-18 03:14:59,969 INFO L87 Difference]: Start difference. First operand 17711 states and 24234 transitions. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 6 states have internal predecessors, (181), 3 states have call successors, (53), 6 states have call predecessors, (53), 3 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2021-12-18 03:15:03,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:15:04,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:15:04,382 INFO L93 Difference]: Finished difference Result 37788 states and 51975 transitions. [2021-12-18 03:15:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 03:15:04,384 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 6 states have internal predecessors, (181), 3 states have call successors, (53), 6 states have call predecessors, (53), 3 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) Word has length 443 [2021-12-18 03:15:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:15:04,438 INFO L225 Difference]: With dead ends: 37788 [2021-12-18 03:15:04,439 INFO L226 Difference]: Without dead ends: 20198 [2021-12-18 03:15:04,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1012 GetRequests, 994 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-12-18 03:15:04,473 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 701 mSDsluCounter, 2801 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 450 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 3414 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-18 03:15:04,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 3414 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 1544 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-12-18 03:15:04,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20198 states. [2021-12-18 03:15:05,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20198 to 17975. [2021-12-18 03:15:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17975 states, 14743 states have (on average 1.3597639557756223) internal successors, (20047), 14935 states have internal predecessors, (20047), 2311 states have call successors, (2311), 914 states have call predecessors, (2311), 920 states have return successors, (2316), 2281 states have call predecessors, (2316), 2272 states have call successors, (2316) [2021-12-18 03:15:05,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17975 states to 17975 states and 24674 transitions. [2021-12-18 03:15:05,328 INFO L78 Accepts]: Start accepts. Automaton has 17975 states and 24674 transitions. Word has length 443 [2021-12-18 03:15:05,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:15:05,329 INFO L470 AbstractCegarLoop]: Abstraction has 17975 states and 24674 transitions. [2021-12-18 03:15:05,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 6 states have internal predecessors, (181), 3 states have call successors, (53), 6 states have call predecessors, (53), 3 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2021-12-18 03:15:05,329 INFO L276 IsEmpty]: Start isEmpty. Operand 17975 states and 24674 transitions. [2021-12-18 03:15:05,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2021-12-18 03:15:05,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:15:05,339 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 4, 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, 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, 1, 1, 1, 1] [2021-12-18 03:15:05,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 03:15:05,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-12-18 03:15:05,541 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:15:05,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:15:05,548 INFO L85 PathProgramCache]: Analyzing trace with hash 3714361, now seen corresponding path program 1 times [2021-12-18 03:15:05,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:15:05,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937323624] [2021-12-18 03:15:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:15:05,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:15:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:15:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:15:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:15:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 03:15:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:15:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:15:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 03:15:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 03:15:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 03:15:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 03:15:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 03:15:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:15:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 03:15:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 03:15:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 03:15:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 03:15:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 03:15:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 03:15:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:15:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 03:15:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:15:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 03:15:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-18 03:15:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 03:15:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-18 03:15:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 03:15:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 03:15:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-18 03:15:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-18 03:15:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 03:15:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2021-12-18 03:15:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2021-12-18 03:15:06,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:15:06,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937323624] [2021-12-18 03:15:06,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937323624] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:15:06,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656474667] [2021-12-18 03:15:06,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:15:06,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:15:06,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:15:06,307 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:15:06,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 03:15:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:08,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 13668 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-18 03:15:08,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:15:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2021-12-18 03:15:09,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:15:09,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656474667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:15:09,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:15:09,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 14 [2021-12-18 03:15:09,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333599377] [2021-12-18 03:15:09,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:15:09,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:15:09,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:15:09,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:15:09,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:15:09,127 INFO L87 Difference]: Start difference. First operand 17975 states and 24674 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-18 03:15:10,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:15:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:15:11,275 INFO L93 Difference]: Finished difference Result 39122 states and 54079 transitions. [2021-12-18 03:15:11,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 03:15:11,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) Word has length 472 [2021-12-18 03:15:11,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:15:11,325 INFO L225 Difference]: With dead ends: 39122 [2021-12-18 03:15:11,326 INFO L226 Difference]: Without dead ends: 21268 [2021-12-18 03:15:11,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 584 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-18 03:15:11,360 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 355 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 3814 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-18 03:15:11,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 3814 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-18 03:15:11,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21268 states. [2021-12-18 03:15:12,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21268 to 18195. [2021-12-18 03:15:12,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18195 states, 14919 states have (on average 1.355519806957571) internal successors, (20223), 15111 states have internal predecessors, (20223), 2311 states have call successors, (2311), 914 states have call predecessors, (2311), 964 states have return successors, (2456), 2325 states have call predecessors, (2456), 2272 states have call successors, (2456) [2021-12-18 03:15:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18195 states to 18195 states and 24990 transitions. [2021-12-18 03:15:12,147 INFO L78 Accepts]: Start accepts. Automaton has 18195 states and 24990 transitions. Word has length 472 [2021-12-18 03:15:12,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:15:12,148 INFO L470 AbstractCegarLoop]: Abstraction has 18195 states and 24990 transitions. [2021-12-18 03:15:12,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-18 03:15:12,148 INFO L276 IsEmpty]: Start isEmpty. Operand 18195 states and 24990 transitions. [2021-12-18 03:15:12,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-12-18 03:15:12,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:15:12,157 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 13, 13, 13, 13, 13, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:15:12,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 03:15:12,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:15:12,382 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:15:12,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:15:12,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1083257460, now seen corresponding path program 1 times [2021-12-18 03:15:12,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:15:12,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992606449] [2021-12-18 03:15:12,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:15:12,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:15:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:15:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:15:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:15:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:15:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 03:15:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:15:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:15:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 03:15:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 03:15:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 03:15:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 03:15:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 03:15:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:15:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 03:15:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 03:15:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 03:15:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 03:15:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 03:15:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 03:15:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:15:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 03:15:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:15:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 03:15:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:12,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-18 03:15:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 03:15:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-18 03:15:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 03:15:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 03:15:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-18 03:15:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-18 03:15:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 03:15:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-12-18 03:15:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2021-12-18 03:15:13,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:15:13,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992606449] [2021-12-18 03:15:13,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992606449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:15:13,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:15:13,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 03:15:13,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024751443] [2021-12-18 03:15:13,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:15:13,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 03:15:13,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:15:13,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 03:15:13,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:15:13,054 INFO L87 Difference]: Start difference. First operand 18195 states and 24990 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (41), 6 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-12-18 03:15:15,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:15:16,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:15:16,790 INFO L93 Difference]: Finished difference Result 37506 states and 51558 transitions. [2021-12-18 03:15:16,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:15:16,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (41), 6 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 479 [2021-12-18 03:15:16,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:15:16,841 INFO L225 Difference]: With dead ends: 37506 [2021-12-18 03:15:16,841 INFO L226 Difference]: Without dead ends: 19338 [2021-12-18 03:15:16,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-12-18 03:15:16,876 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 1258 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 569 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-18 03:15:16,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 1647 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 341 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2021-12-18 03:15:16,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19338 states. [2021-12-18 03:15:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19338 to 18187. [2021-12-18 03:15:17,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18187 states, 14913 states have (on average 1.355327566552672) internal successors, (20212), 15105 states have internal predecessors, (20212), 2309 states have call successors, (2309), 914 states have call predecessors, (2309), 964 states have return successors, (2454), 2323 states have call predecessors, (2454), 2270 states have call successors, (2454) [2021-12-18 03:15:17,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18187 states to 18187 states and 24975 transitions. [2021-12-18 03:15:17,758 INFO L78 Accepts]: Start accepts. Automaton has 18187 states and 24975 transitions. Word has length 479 [2021-12-18 03:15:17,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:15:17,759 INFO L470 AbstractCegarLoop]: Abstraction has 18187 states and 24975 transitions. [2021-12-18 03:15:17,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (41), 6 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-12-18 03:15:17,759 INFO L276 IsEmpty]: Start isEmpty. Operand 18187 states and 24975 transitions. [2021-12-18 03:15:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-12-18 03:15:17,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:15:17,768 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:15:17,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-18 03:15:17,768 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:15:17,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:15:17,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1880365276, now seen corresponding path program 1 times [2021-12-18 03:15:17,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:15:17,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820273673] [2021-12-18 03:15:17,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:15:17,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:15:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:15:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:15:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:15:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 03:15:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:15:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:15:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 03:15:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 03:15:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 03:15:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 03:15:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 03:15:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:15:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 03:15:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 03:15:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 03:15:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 03:15:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 03:15:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 03:15:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:15:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 03:15:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:15:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 03:15:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-18 03:15:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 03:15:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-18 03:15:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 03:15:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 03:15:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-18 03:15:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-18 03:15:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 03:15:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-12-18 03:15:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:18,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1094 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 1069 trivial. 0 not checked. [2021-12-18 03:15:18,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:15:18,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820273673] [2021-12-18 03:15:18,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820273673] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:15:18,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095389414] [2021-12-18 03:15:18,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:15:18,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:15:18,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:15:18,476 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) [2021-12-18 03:15:18,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 03:15:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:20,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 13715 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-18 03:15:20,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:15:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1094 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 1041 trivial. 0 not checked. [2021-12-18 03:15:21,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:15:21,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095389414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:15:21,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:15:21,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 13 [2021-12-18 03:15:21,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626652431] [2021-12-18 03:15:21,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:15:21,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 03:15:21,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:15:21,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 03:15:21,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-18 03:15:21,263 INFO L87 Difference]: Start difference. First operand 18187 states and 24975 transitions. Second operand has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 5 states have internal predecessors, (184), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) [2021-12-18 03:15:22,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:15:22,011 INFO L93 Difference]: Finished difference Result 36407 states and 49975 transitions. [2021-12-18 03:15:22,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 03:15:22,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 5 states have internal predecessors, (184), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) Word has length 479 [2021-12-18 03:15:22,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:15:22,063 INFO L225 Difference]: With dead ends: 36407 [2021-12-18 03:15:22,063 INFO L226 Difference]: Without dead ends: 18262 [2021-12-18 03:15:22,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 592 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-18 03:15:22,099 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 0 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:15:22,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4037 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 03:15:22,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18262 states. [2021-12-18 03:15:22,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18262 to 18192. [2021-12-18 03:15:22,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18192 states, 14916 states have (on average 1.355256100831322) internal successors, (20215), 15109 states have internal predecessors, (20215), 2309 states have call successors, (2309), 914 states have call predecessors, (2309), 966 states have return successors, (2456), 2324 states have call predecessors, (2456), 2270 states have call successors, (2456) [2021-12-18 03:15:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18192 states to 18192 states and 24980 transitions. [2021-12-18 03:15:22,970 INFO L78 Accepts]: Start accepts. Automaton has 18192 states and 24980 transitions. Word has length 479 [2021-12-18 03:15:22,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:15:22,970 INFO L470 AbstractCegarLoop]: Abstraction has 18192 states and 24980 transitions. [2021-12-18 03:15:22,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 5 states have internal predecessors, (184), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) [2021-12-18 03:15:22,970 INFO L276 IsEmpty]: Start isEmpty. Operand 18192 states and 24980 transitions. [2021-12-18 03:15:22,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2021-12-18 03:15:22,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:15:22,986 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:15:23,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 03:15:23,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:15:23,198 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:15:23,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:15:23,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2134187854, now seen corresponding path program 1 times [2021-12-18 03:15:23,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:15:23,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651442759] [2021-12-18 03:15:23,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:15:23,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:15:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:15:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:15:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:15:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 03:15:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:15:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:15:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 03:15:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 03:15:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 03:15:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 03:15:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 03:15:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:15:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 03:15:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 03:15:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 03:15:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 03:15:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 03:15:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 03:15:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:15:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 03:15:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:15:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 03:15:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-18 03:15:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 03:15:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-18 03:15:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 03:15:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 03:15:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-18 03:15:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-18 03:15:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 03:15:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2021-12-18 03:15:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2021-12-18 03:15:23,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:15:23,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651442759] [2021-12-18 03:15:23,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651442759] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:15:23,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048496289] [2021-12-18 03:15:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:15:23,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:15:23,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:15:23,834 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) [2021-12-18 03:15:23,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 03:15:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:25,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 13762 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-18 03:15:26,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:15:26,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 03:15:26,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 03:15:26,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 03:15:26,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 03:15:26,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 03:15:26,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 03:15:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2021-12-18 03:15:27,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:15:27,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048496289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:15:27,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:15:27,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2021-12-18 03:15:27,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2787717] [2021-12-18 03:15:27,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:15:27,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 03:15:27,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:15:27,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 03:15:27,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-18 03:15:27,101 INFO L87 Difference]: Start difference. First operand 18192 states and 24980 transitions. Second operand has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 6 states have internal predecessors, (187), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-12-18 03:15:29,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:15:31,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:15:32,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:15:32,599 INFO L93 Difference]: Finished difference Result 36381 states and 49959 transitions. [2021-12-18 03:15:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 03:15:32,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 6 states have internal predecessors, (187), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 486 [2021-12-18 03:15:32,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:15:32,642 INFO L225 Difference]: With dead ends: 36381 [2021-12-18 03:15:32,643 INFO L226 Difference]: Without dead ends: 18243 [2021-12-18 03:15:32,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-12-18 03:15:32,672 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 287 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:15:32,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2717 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 143 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2021-12-18 03:15:32,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18243 states. [2021-12-18 03:15:33,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18243 to 18197. [2021-12-18 03:15:33,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18197 states, 14921 states have (on average 1.3552040747939147) internal successors, (20221), 15114 states have internal predecessors, (20221), 2309 states have call successors, (2309), 914 states have call predecessors, (2309), 966 states have return successors, (2456), 2324 states have call predecessors, (2456), 2270 states have call successors, (2456) [2021-12-18 03:15:33,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18197 states to 18197 states and 24986 transitions. [2021-12-18 03:15:33,414 INFO L78 Accepts]: Start accepts. Automaton has 18197 states and 24986 transitions. Word has length 486 [2021-12-18 03:15:33,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:15:33,415 INFO L470 AbstractCegarLoop]: Abstraction has 18197 states and 24986 transitions. [2021-12-18 03:15:33,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 6 states have internal predecessors, (187), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-12-18 03:15:33,415 INFO L276 IsEmpty]: Start isEmpty. Operand 18197 states and 24986 transitions. [2021-12-18 03:15:33,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2021-12-18 03:15:33,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:15:33,424 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:15:33,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 03:15:33,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-12-18 03:15:33,640 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:15:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:15:33,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1528365002, now seen corresponding path program 1 times [2021-12-18 03:15:33,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:15:33,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191430402] [2021-12-18 03:15:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:15:33,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:15:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:33,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:15:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:15:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 03:15:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:15:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:15:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 03:15:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 03:15:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 03:15:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-18 03:15:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-18 03:15:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 03:15:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 03:15:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 03:15:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 03:15:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 03:15:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 03:15:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 03:15:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 03:15:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 03:15:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 03:15:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:15:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 03:15:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-18 03:15:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 03:15:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-18 03:15:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 03:15:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 03:15:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-18 03:15:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-18 03:15:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:15:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 03:15:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2021-12-18 03:15:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:15:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:34,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-12-18 03:15:34,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:15:34,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191430402] [2021-12-18 03:15:34,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191430402] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:15:34,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392068295] [2021-12-18 03:15:34,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:15:34,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:15:34,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:15:34,220 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) [2021-12-18 03:15:34,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 03:15:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:15:36,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 13781 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-18 03:15:36,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:15:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2021-12-18 03:15:37,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:15:37,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392068295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:15:37,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:15:37,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 14 [2021-12-18 03:15:37,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121764430] [2021-12-18 03:15:37,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:15:37,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:15:37,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:15:37,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:15:37,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:15:37,105 INFO L87 Difference]: Start difference. First operand 18197 states and 24986 transitions. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38)