/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:15:15,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:15:15,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:15:15,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:15:15,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:15:15,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:15:15,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:15:15,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:15:15,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:15:15,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:15:15,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:15:15,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:15:15,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:15:15,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:15:15,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:15:15,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:15:15,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:15:15,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:15:15,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:15:15,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:15:15,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:15:15,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:15:15,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:15:15,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:15:15,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:15:15,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:15:15,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:15:15,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:15:15,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:15:16,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:15:16,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:15:16,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:15:16,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:15:16,028 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:15:16,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:15:16,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:15:16,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:15:16,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:15:16,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:15:16,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:15:16,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:15:16,030 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:15:16,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:15:16,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:15:16,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:15:16,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:15:16,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:15:16,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:15:16,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:15:16,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:15:16,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:15:16,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:15:16,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:15:16,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:15:16,033 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:15:16,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:15:16,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:15:16,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:15:16,487 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:15:16,488 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:15:16,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-12-22 08:15:16,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41ebf59f0/ef34fff4532c4d40826e2229abcff405/FLAGc6535d520 [2020-12-22 08:15:17,403 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:15:17,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-12-22 08:15:17,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41ebf59f0/ef34fff4532c4d40826e2229abcff405/FLAGc6535d520 [2020-12-22 08:15:17,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41ebf59f0/ef34fff4532c4d40826e2229abcff405 [2020-12-22 08:15:17,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:15:17,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:15:17,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:15:17,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:15:17,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:15:17,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:15:17" (1/1) ... [2020-12-22 08:15:17,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2747c2bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:17, skipping insertion in model container [2020-12-22 08:15:17,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:15:17" (1/1) ... [2020-12-22 08:15:17,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:15:17,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:15:18,170 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8022,8035] [2020-12-22 08:15:18,225 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12589,12602] [2020-12-22 08:15:18,304 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20359,20372] [2020-12-22 08:15:18,368 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27490,27503] [2020-12-22 08:15:18,448 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[48814,48827] [2020-12-22 08:15:18,635 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80045,80058] [2020-12-22 08:15:18,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:15:18,883 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:15:18,942 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8022,8035] [2020-12-22 08:15:18,970 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12589,12602] [2020-12-22 08:15:19,009 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20359,20372] [2020-12-22 08:15:19,044 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27490,27503] [2020-12-22 08:15:19,104 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[48814,48827] [2020-12-22 08:15:19,179 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80045,80058] [2020-12-22 08:15:19,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:15:19,352 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:15:19,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:19 WrapperNode [2020-12-22 08:15:19,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:15:19,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:15:19,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:15:19,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:15:19,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:19" (1/1) ... [2020-12-22 08:15:19,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:19" (1/1) ... [2020-12-22 08:15:19,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:15:19,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:15:19,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:15:19,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:15:19,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:19" (1/1) ... [2020-12-22 08:15:19,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:19" (1/1) ... [2020-12-22 08:15:19,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:19" (1/1) ... [2020-12-22 08:15:19,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:19" (1/1) ... [2020-12-22 08:15:19,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:19" (1/1) ... [2020-12-22 08:15:19,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:19" (1/1) ... [2020-12-22 08:15:19,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:19" (1/1) ... [2020-12-22 08:15:19,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:15:19,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:15:19,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:15:19,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:15:19,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:15:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:15:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:15:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:15:20,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:15:23,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:15:23,667 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:15:23,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:15:23 BoogieIcfgContainer [2020-12-22 08:15:23,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:15:23,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:15:23,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:15:23,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:15:23,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:15:17" (1/3) ... [2020-12-22 08:15:23,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d59465d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:15:23, skipping insertion in model container [2020-12-22 08:15:23,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:19" (2/3) ... [2020-12-22 08:15:23,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d59465d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:15:23, skipping insertion in model container [2020-12-22 08:15:23,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:15:23" (3/3) ... [2020-12-22 08:15:23,681 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-12-22 08:15:23,691 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:15:23,697 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 08:15:23,717 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 08:15:23,765 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:15:23,766 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:15:23,766 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:15:23,766 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:15:23,766 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:15:23,766 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:15:23,766 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:15:23,767 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:15:23,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states. [2020-12-22 08:15:23,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:15:23,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:23,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:23,837 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:23,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:23,843 INFO L82 PathProgramCache]: Analyzing trace with hash 692081489, now seen corresponding path program 1 times [2020-12-22 08:15:23,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:23,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919216382] [2020-12-22 08:15:23,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:24,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919216382] [2020-12-22 08:15:24,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:24,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:15:24,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303321987] [2020-12-22 08:15:24,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:15:24,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:24,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:15:24,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:15:24,300 INFO L87 Difference]: Start difference. First operand 1290 states. Second operand 5 states. [2020-12-22 08:15:26,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:26,356 INFO L93 Difference]: Finished difference Result 2522 states and 4334 transitions. [2020-12-22 08:15:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:15:26,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-12-22 08:15:26,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:26,385 INFO L225 Difference]: With dead ends: 2522 [2020-12-22 08:15:26,386 INFO L226 Difference]: Without dead ends: 1598 [2020-12-22 08:15:26,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:15:26,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2020-12-22 08:15:26,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1592. [2020-12-22 08:15:26,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1592 states. [2020-12-22 08:15:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2074 transitions. [2020-12-22 08:15:26,547 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2074 transitions. Word has length 52 [2020-12-22 08:15:26,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:26,548 INFO L481 AbstractCegarLoop]: Abstraction has 1592 states and 2074 transitions. [2020-12-22 08:15:26,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:15:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2074 transitions. [2020-12-22 08:15:26,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:15:26,553 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:26,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:26,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:15:26,554 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:26,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:26,555 INFO L82 PathProgramCache]: Analyzing trace with hash -736362272, now seen corresponding path program 1 times [2020-12-22 08:15:26,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:26,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750735448] [2020-12-22 08:15:26,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:26,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750735448] [2020-12-22 08:15:26,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:26,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:15:26,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105225203] [2020-12-22 08:15:26,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:15:26,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:26,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:15:26,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:15:26,782 INFO L87 Difference]: Start difference. First operand 1592 states and 2074 transitions. Second operand 6 states. [2020-12-22 08:15:28,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:28,258 INFO L93 Difference]: Finished difference Result 3601 states and 4743 transitions. [2020-12-22 08:15:28,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:15:28,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-12-22 08:15:28,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:28,273 INFO L225 Difference]: With dead ends: 3601 [2020-12-22 08:15:28,273 INFO L226 Difference]: Without dead ends: 2607 [2020-12-22 08:15:28,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:15:28,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2020-12-22 08:15:28,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2584. [2020-12-22 08:15:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2584 states. [2020-12-22 08:15:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 3418 transitions. [2020-12-22 08:15:28,400 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 3418 transitions. Word has length 53 [2020-12-22 08:15:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:28,401 INFO L481 AbstractCegarLoop]: Abstraction has 2584 states and 3418 transitions. [2020-12-22 08:15:28,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:15:28,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 3418 transitions. [2020-12-22 08:15:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:15:28,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:28,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:28,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:15:28,406 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:28,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:28,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1386389066, now seen corresponding path program 1 times [2020-12-22 08:15:28,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:28,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947806531] [2020-12-22 08:15:28,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:28,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947806531] [2020-12-22 08:15:28,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:28,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:15:28,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920825520] [2020-12-22 08:15:28,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:15:28,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:28,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:15:28,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:15:28,598 INFO L87 Difference]: Start difference. First operand 2584 states and 3418 transitions. Second operand 6 states. [2020-12-22 08:15:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:30,049 INFO L93 Difference]: Finished difference Result 6108 states and 8187 transitions. [2020-12-22 08:15:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:15:30,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-12-22 08:15:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:30,073 INFO L225 Difference]: With dead ends: 6108 [2020-12-22 08:15:30,073 INFO L226 Difference]: Without dead ends: 4456 [2020-12-22 08:15:30,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:15:30,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4456 states. [2020-12-22 08:15:30,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4456 to 4440. [2020-12-22 08:15:30,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4440 states. [2020-12-22 08:15:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 5923 transitions. [2020-12-22 08:15:30,286 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 5923 transitions. Word has length 53 [2020-12-22 08:15:30,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:30,287 INFO L481 AbstractCegarLoop]: Abstraction has 4440 states and 5923 transitions. [2020-12-22 08:15:30,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:15:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 5923 transitions. [2020-12-22 08:15:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:15:30,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:30,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:30,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:15:30,292 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:30,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:30,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1763239895, now seen corresponding path program 1 times [2020-12-22 08:15:30,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:30,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493275059] [2020-12-22 08:15:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:30,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493275059] [2020-12-22 08:15:30,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:30,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:15:30,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265596606] [2020-12-22 08:15:30,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:15:30,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:30,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:15:30,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:15:30,487 INFO L87 Difference]: Start difference. First operand 4440 states and 5923 transitions. Second operand 8 states. [2020-12-22 08:15:33,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:33,382 INFO L93 Difference]: Finished difference Result 9648 states and 13823 transitions. [2020-12-22 08:15:33,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:15:33,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-12-22 08:15:33,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:33,421 INFO L225 Difference]: With dead ends: 9648 [2020-12-22 08:15:33,421 INFO L226 Difference]: Without dead ends: 8255 [2020-12-22 08:15:33,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:15:33,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8255 states. [2020-12-22 08:15:33,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8255 to 4440. [2020-12-22 08:15:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4440 states. [2020-12-22 08:15:33,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 5922 transitions. [2020-12-22 08:15:33,724 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 5922 transitions. Word has length 55 [2020-12-22 08:15:33,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:33,724 INFO L481 AbstractCegarLoop]: Abstraction has 4440 states and 5922 transitions. [2020-12-22 08:15:33,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:15:33,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 5922 transitions. [2020-12-22 08:15:33,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:15:33,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:33,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:33,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:15:33,729 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:33,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:33,730 INFO L82 PathProgramCache]: Analyzing trace with hash 622296368, now seen corresponding path program 1 times [2020-12-22 08:15:33,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:33,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436804995] [2020-12-22 08:15:33,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:33,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:33,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436804995] [2020-12-22 08:15:33,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:33,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:15:33,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691984049] [2020-12-22 08:15:33,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:15:33,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:33,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:15:33,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:15:33,952 INFO L87 Difference]: Start difference. First operand 4440 states and 5922 transitions. Second operand 9 states. [2020-12-22 08:15:38,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:38,070 INFO L93 Difference]: Finished difference Result 12230 states and 17309 transitions. [2020-12-22 08:15:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:15:38,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-12-22 08:15:38,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:38,118 INFO L225 Difference]: With dead ends: 12230 [2020-12-22 08:15:38,118 INFO L226 Difference]: Without dead ends: 11087 [2020-12-22 08:15:38,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:15:38,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11087 states. [2020-12-22 08:15:38,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11087 to 4440. [2020-12-22 08:15:38,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4440 states. [2020-12-22 08:15:38,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 5921 transitions. [2020-12-22 08:15:38,519 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 5921 transitions. Word has length 55 [2020-12-22 08:15:38,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:38,521 INFO L481 AbstractCegarLoop]: Abstraction has 4440 states and 5921 transitions. [2020-12-22 08:15:38,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:15:38,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 5921 transitions. [2020-12-22 08:15:38,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:15:38,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:38,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:38,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:15:38,527 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:38,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:38,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1268497001, now seen corresponding path program 1 times [2020-12-22 08:15:38,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:38,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532841994] [2020-12-22 08:15:38,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:38,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532841994] [2020-12-22 08:15:38,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:38,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:15:38,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243764430] [2020-12-22 08:15:38,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:15:38,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:38,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:15:38,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:15:38,756 INFO L87 Difference]: Start difference. First operand 4440 states and 5921 transitions. Second operand 9 states. [2020-12-22 08:15:42,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:42,996 INFO L93 Difference]: Finished difference Result 8494 states and 12034 transitions. [2020-12-22 08:15:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:15:42,997 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-12-22 08:15:42,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:43,016 INFO L225 Difference]: With dead ends: 8494 [2020-12-22 08:15:43,016 INFO L226 Difference]: Without dead ends: 8488 [2020-12-22 08:15:43,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:15:43,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8488 states. [2020-12-22 08:15:43,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8488 to 4440. [2020-12-22 08:15:43,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4440 states. [2020-12-22 08:15:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 5920 transitions. [2020-12-22 08:15:43,375 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 5920 transitions. Word has length 55 [2020-12-22 08:15:43,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:43,376 INFO L481 AbstractCegarLoop]: Abstraction has 4440 states and 5920 transitions. [2020-12-22 08:15:43,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:15:43,376 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 5920 transitions. [2020-12-22 08:15:43,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:15:43,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:43,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:43,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:15:43,390 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:43,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:43,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1662572980, now seen corresponding path program 1 times [2020-12-22 08:15:43,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:43,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038999395] [2020-12-22 08:15:43,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:43,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038999395] [2020-12-22 08:15:43,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:43,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:43,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409905437] [2020-12-22 08:15:43,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:43,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:43,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:43,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:43,493 INFO L87 Difference]: Start difference. First operand 4440 states and 5920 transitions. Second operand 3 states. [2020-12-22 08:15:44,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:44,027 INFO L93 Difference]: Finished difference Result 6442 states and 8967 transitions. [2020-12-22 08:15:44,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:44,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:15:44,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:44,038 INFO L225 Difference]: With dead ends: 6442 [2020-12-22 08:15:44,038 INFO L226 Difference]: Without dead ends: 4868 [2020-12-22 08:15:44,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:44,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2020-12-22 08:15:44,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4528. [2020-12-22 08:15:44,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4528 states. [2020-12-22 08:15:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4528 states to 4528 states and 6104 transitions. [2020-12-22 08:15:44,412 INFO L78 Accepts]: Start accepts. Automaton has 4528 states and 6104 transitions. Word has length 56 [2020-12-22 08:15:44,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:44,412 INFO L481 AbstractCegarLoop]: Abstraction has 4528 states and 6104 transitions. [2020-12-22 08:15:44,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:44,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4528 states and 6104 transitions. [2020-12-22 08:15:44,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:15:44,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:44,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:44,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:15:44,417 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:44,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:44,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1775531576, now seen corresponding path program 1 times [2020-12-22 08:15:44,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:44,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577969888] [2020-12-22 08:15:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:44,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577969888] [2020-12-22 08:15:44,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:44,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:44,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260734933] [2020-12-22 08:15:44,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:44,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:44,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:44,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:44,484 INFO L87 Difference]: Start difference. First operand 4528 states and 6104 transitions. Second operand 3 states. [2020-12-22 08:15:44,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:44,988 INFO L93 Difference]: Finished difference Result 7498 states and 10603 transitions. [2020-12-22 08:15:44,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:44,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:15:44,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:45,004 INFO L225 Difference]: With dead ends: 7498 [2020-12-22 08:15:45,005 INFO L226 Difference]: Without dead ends: 5502 [2020-12-22 08:15:45,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:45,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5502 states. [2020-12-22 08:15:45,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5502 to 4990. [2020-12-22 08:15:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4990 states. [2020-12-22 08:15:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4990 states to 4990 states and 6837 transitions. [2020-12-22 08:15:45,481 INFO L78 Accepts]: Start accepts. Automaton has 4990 states and 6837 transitions. Word has length 56 [2020-12-22 08:15:45,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:45,482 INFO L481 AbstractCegarLoop]: Abstraction has 4990 states and 6837 transitions. [2020-12-22 08:15:45,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:45,482 INFO L276 IsEmpty]: Start isEmpty. Operand 4990 states and 6837 transitions. [2020-12-22 08:15:45,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:15:45,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:45,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:45,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:15:45,486 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:45,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:45,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1498951000, now seen corresponding path program 1 times [2020-12-22 08:15:45,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:45,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74643236] [2020-12-22 08:15:45,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:45,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74643236] [2020-12-22 08:15:45,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:45,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:45,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022187968] [2020-12-22 08:15:45,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:45,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:45,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:45,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:45,547 INFO L87 Difference]: Start difference. First operand 4990 states and 6837 transitions. Second operand 3 states. [2020-12-22 08:15:46,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:46,391 INFO L93 Difference]: Finished difference Result 11043 states and 15421 transitions. [2020-12-22 08:15:46,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:46,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:15:46,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:46,408 INFO L225 Difference]: With dead ends: 11043 [2020-12-22 08:15:46,409 INFO L226 Difference]: Without dead ends: 7491 [2020-12-22 08:15:46,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:46,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7491 states. [2020-12-22 08:15:47,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7491 to 7485. [2020-12-22 08:15:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7485 states. [2020-12-22 08:15:47,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7485 states to 7485 states and 10149 transitions. [2020-12-22 08:15:47,137 INFO L78 Accepts]: Start accepts. Automaton has 7485 states and 10149 transitions. Word has length 56 [2020-12-22 08:15:47,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:47,137 INFO L481 AbstractCegarLoop]: Abstraction has 7485 states and 10149 transitions. [2020-12-22 08:15:47,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:47,137 INFO L276 IsEmpty]: Start isEmpty. Operand 7485 states and 10149 transitions. [2020-12-22 08:15:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:15:47,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:47,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:47,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:15:47,142 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:47,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:47,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1118792296, now seen corresponding path program 1 times [2020-12-22 08:15:47,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:47,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856114654] [2020-12-22 08:15:47,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:47,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856114654] [2020-12-22 08:15:47,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:47,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:15:47,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163993753] [2020-12-22 08:15:47,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:15:47,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:47,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:15:47,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:15:47,571 INFO L87 Difference]: Start difference. First operand 7485 states and 10149 transitions. Second operand 12 states. [2020-12-22 08:15:52,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:52,395 INFO L93 Difference]: Finished difference Result 16257 states and 22470 transitions. [2020-12-22 08:15:52,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:15:52,396 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-12-22 08:15:52,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:52,421 INFO L225 Difference]: With dead ends: 16257 [2020-12-22 08:15:52,421 INFO L226 Difference]: Without dead ends: 15866 [2020-12-22 08:15:52,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:15:52,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15866 states. [2020-12-22 08:15:53,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15866 to 7472. [2020-12-22 08:15:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7472 states. [2020-12-22 08:15:53,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7472 states to 7472 states and 10134 transitions. [2020-12-22 08:15:53,950 INFO L78 Accepts]: Start accepts. Automaton has 7472 states and 10134 transitions. Word has length 57 [2020-12-22 08:15:53,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:53,950 INFO L481 AbstractCegarLoop]: Abstraction has 7472 states and 10134 transitions. [2020-12-22 08:15:53,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:15:53,951 INFO L276 IsEmpty]: Start isEmpty. Operand 7472 states and 10134 transitions. [2020-12-22 08:15:53,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:15:53,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:53,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:53,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:15:53,955 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:53,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:53,956 INFO L82 PathProgramCache]: Analyzing trace with hash -677466950, now seen corresponding path program 1 times [2020-12-22 08:15:53,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:53,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309323757] [2020-12-22 08:15:53,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:54,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309323757] [2020-12-22 08:15:54,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:54,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:54,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101757129] [2020-12-22 08:15:54,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:54,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:54,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:54,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:54,027 INFO L87 Difference]: Start difference. First operand 7472 states and 10134 transitions. Second operand 3 states. [2020-12-22 08:15:55,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:55,272 INFO L93 Difference]: Finished difference Result 15727 states and 22111 transitions. [2020-12-22 08:15:55,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:55,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 08:15:55,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:55,283 INFO L225 Difference]: With dead ends: 15727 [2020-12-22 08:15:55,283 INFO L226 Difference]: Without dead ends: 9983 [2020-12-22 08:15:55,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9983 states. [2020-12-22 08:15:56,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9983 to 8141. [2020-12-22 08:15:56,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8141 states. [2020-12-22 08:15:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8141 states to 8141 states and 11343 transitions. [2020-12-22 08:15:56,420 INFO L78 Accepts]: Start accepts. Automaton has 8141 states and 11343 transitions. Word has length 57 [2020-12-22 08:15:56,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:56,420 INFO L481 AbstractCegarLoop]: Abstraction has 8141 states and 11343 transitions. [2020-12-22 08:15:56,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:56,420 INFO L276 IsEmpty]: Start isEmpty. Operand 8141 states and 11343 transitions. [2020-12-22 08:15:56,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:15:56,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:56,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:56,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:15:56,424 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:56,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:56,425 INFO L82 PathProgramCache]: Analyzing trace with hash -611117000, now seen corresponding path program 1 times [2020-12-22 08:15:56,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:56,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740189656] [2020-12-22 08:15:56,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:56,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740189656] [2020-12-22 08:15:56,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:56,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:56,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773450537] [2020-12-22 08:15:56,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:56,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:56,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:56,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:56,473 INFO L87 Difference]: Start difference. First operand 8141 states and 11343 transitions. Second operand 3 states. [2020-12-22 08:15:58,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:58,571 INFO L93 Difference]: Finished difference Result 18941 states and 27138 transitions. [2020-12-22 08:15:58,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:58,572 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 08:15:58,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:58,583 INFO L225 Difference]: With dead ends: 18941 [2020-12-22 08:15:58,584 INFO L226 Difference]: Without dead ends: 12075 [2020-12-22 08:15:58,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12075 states. [2020-12-22 08:15:59,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12075 to 9557. [2020-12-22 08:15:59,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9557 states. [2020-12-22 08:15:59,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9557 states to 9557 states and 13589 transitions. [2020-12-22 08:15:59,708 INFO L78 Accepts]: Start accepts. Automaton has 9557 states and 13589 transitions. Word has length 57 [2020-12-22 08:15:59,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:59,708 INFO L481 AbstractCegarLoop]: Abstraction has 9557 states and 13589 transitions. [2020-12-22 08:15:59,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:59,709 INFO L276 IsEmpty]: Start isEmpty. Operand 9557 states and 13589 transitions. [2020-12-22 08:15:59,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:15:59,711 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:59,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:59,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:15:59,711 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:59,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:59,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1274837938, now seen corresponding path program 1 times [2020-12-22 08:15:59,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:59,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358684864] [2020-12-22 08:15:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:59,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:59,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358684864] [2020-12-22 08:15:59,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:59,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:59,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930952999] [2020-12-22 08:15:59,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:59,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:59,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:59,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:59,757 INFO L87 Difference]: Start difference. First operand 9557 states and 13589 transitions. Second operand 3 states. [2020-12-22 08:16:01,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:01,393 INFO L93 Difference]: Finished difference Result 20062 states and 28797 transitions. [2020-12-22 08:16:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:01,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 08:16:01,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:01,410 INFO L225 Difference]: With dead ends: 20062 [2020-12-22 08:16:01,411 INFO L226 Difference]: Without dead ends: 10927 [2020-12-22 08:16:01,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:01,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10927 states. [2020-12-22 08:16:02,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10927 to 8852. [2020-12-22 08:16:02,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8852 states. [2020-12-22 08:16:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8852 states to 8852 states and 12670 transitions. [2020-12-22 08:16:02,513 INFO L78 Accepts]: Start accepts. Automaton has 8852 states and 12670 transitions. Word has length 57 [2020-12-22 08:16:02,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:02,514 INFO L481 AbstractCegarLoop]: Abstraction has 8852 states and 12670 transitions. [2020-12-22 08:16:02,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:02,514 INFO L276 IsEmpty]: Start isEmpty. Operand 8852 states and 12670 transitions. [2020-12-22 08:16:02,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:16:02,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:02,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:02,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:16:02,516 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:02,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:02,517 INFO L82 PathProgramCache]: Analyzing trace with hash -410378211, now seen corresponding path program 1 times [2020-12-22 08:16:02,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:02,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569247582] [2020-12-22 08:16:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:03,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569247582] [2020-12-22 08:16:03,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:03,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:16:03,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421881453] [2020-12-22 08:16:03,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:16:03,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:03,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:16:03,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:16:03,282 INFO L87 Difference]: Start difference. First operand 8852 states and 12670 transitions. Second operand 19 states. [2020-12-22 08:16:03,528 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-12-22 08:16:03,859 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-22 08:16:04,134 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 08:16:04,497 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-22 08:16:04,752 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-22 08:16:05,079 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:16:05,291 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:16:05,532 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-22 08:16:06,456 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:16:06,774 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-12-22 08:16:07,316 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 08:16:09,851 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-12-22 08:16:10,507 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-22 08:16:11,398 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:16:16,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:16,823 INFO L93 Difference]: Finished difference Result 33863 states and 49279 transitions. [2020-12-22 08:16:16,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:16:16,824 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-12-22 08:16:16,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:16,861 INFO L225 Difference]: With dead ends: 33863 [2020-12-22 08:16:16,862 INFO L226 Difference]: Without dead ends: 33859 [2020-12-22 08:16:16,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=310, Invalid=1412, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 08:16:16,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33859 states. [2020-12-22 08:16:18,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33859 to 8852. [2020-12-22 08:16:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8852 states. [2020-12-22 08:16:18,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8852 states to 8852 states and 12669 transitions. [2020-12-22 08:16:18,281 INFO L78 Accepts]: Start accepts. Automaton has 8852 states and 12669 transitions. Word has length 58 [2020-12-22 08:16:18,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:18,281 INFO L481 AbstractCegarLoop]: Abstraction has 8852 states and 12669 transitions. [2020-12-22 08:16:18,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:16:18,281 INFO L276 IsEmpty]: Start isEmpty. Operand 8852 states and 12669 transitions. [2020-12-22 08:16:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:16:18,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:18,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:18,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:16:18,283 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:18,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:18,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1645651769, now seen corresponding path program 1 times [2020-12-22 08:16:18,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:18,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307342879] [2020-12-22 08:16:18,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:18,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:18,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307342879] [2020-12-22 08:16:18,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:18,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:16:18,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136278652] [2020-12-22 08:16:18,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:16:18,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:18,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:16:18,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:16:18,989 INFO L87 Difference]: Start difference. First operand 8852 states and 12669 transitions. Second operand 19 states. [2020-12-22 08:16:19,211 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-22 08:16:20,025 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:16:20,929 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:16:30,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:30,183 INFO L93 Difference]: Finished difference Result 24595 states and 35686 transitions. [2020-12-22 08:16:30,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:16:30,184 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-12-22 08:16:30,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:30,207 INFO L225 Difference]: With dead ends: 24595 [2020-12-22 08:16:30,207 INFO L226 Difference]: Without dead ends: 24591 [2020-12-22 08:16:30,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=273, Invalid=987, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 08:16:30,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24591 states. [2020-12-22 08:16:31,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24591 to 8852. [2020-12-22 08:16:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8852 states. [2020-12-22 08:16:31,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8852 states to 8852 states and 12668 transitions. [2020-12-22 08:16:31,719 INFO L78 Accepts]: Start accepts. Automaton has 8852 states and 12668 transitions. Word has length 58 [2020-12-22 08:16:31,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:31,720 INFO L481 AbstractCegarLoop]: Abstraction has 8852 states and 12668 transitions. [2020-12-22 08:16:31,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:16:31,720 INFO L276 IsEmpty]: Start isEmpty. Operand 8852 states and 12668 transitions. [2020-12-22 08:16:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 08:16:31,722 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:31,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:31,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:16:31,722 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:31,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:31,723 INFO L82 PathProgramCache]: Analyzing trace with hash 3906094, now seen corresponding path program 1 times [2020-12-22 08:16:31,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:31,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919418821] [2020-12-22 08:16:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:32,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:32,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919418821] [2020-12-22 08:16:32,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:32,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:16:32,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917773180] [2020-12-22 08:16:32,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:16:32,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:32,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:16:32,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:16:32,323 INFO L87 Difference]: Start difference. First operand 8852 states and 12668 transitions. Second operand 16 states. [2020-12-22 08:16:33,100 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-12-22 08:16:33,281 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-22 08:16:33,605 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-22 08:16:34,003 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-22 08:16:41,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:41,956 INFO L93 Difference]: Finished difference Result 27142 states and 39292 transitions. [2020-12-22 08:16:41,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:16:41,957 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2020-12-22 08:16:41,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:41,986 INFO L225 Difference]: With dead ends: 27142 [2020-12-22 08:16:41,986 INFO L226 Difference]: Without dead ends: 27138 [2020-12-22 08:16:41,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:16:42,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27138 states. [2020-12-22 08:16:43,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27138 to 8848. [2020-12-22 08:16:43,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8848 states. [2020-12-22 08:16:43,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 12664 transitions. [2020-12-22 08:16:43,633 INFO L78 Accepts]: Start accepts. Automaton has 8848 states and 12664 transitions. Word has length 59 [2020-12-22 08:16:43,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:43,634 INFO L481 AbstractCegarLoop]: Abstraction has 8848 states and 12664 transitions. [2020-12-22 08:16:43,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:16:43,634 INFO L276 IsEmpty]: Start isEmpty. Operand 8848 states and 12664 transitions. [2020-12-22 08:16:43,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 08:16:43,635 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:43,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:43,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:16:43,635 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:43,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:43,636 INFO L82 PathProgramCache]: Analyzing trace with hash 467681014, now seen corresponding path program 1 times [2020-12-22 08:16:43,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:43,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100990019] [2020-12-22 08:16:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:44,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100990019] [2020-12-22 08:16:44,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:44,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 08:16:44,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881171210] [2020-12-22 08:16:44,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 08:16:44,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:44,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 08:16:44,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:16:44,345 INFO L87 Difference]: Start difference. First operand 8848 states and 12664 transitions. Second operand 15 states. [2020-12-22 08:16:44,871 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-12-22 08:16:45,019 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-12-22 08:16:45,244 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:16:45,532 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:16:45,771 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:16:46,069 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-22 08:16:46,852 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-12-22 08:16:47,309 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-22 08:16:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:53,504 INFO L93 Difference]: Finished difference Result 19055 states and 27437 transitions. [2020-12-22 08:16:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:16:53,505 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-12-22 08:16:53,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:53,525 INFO L225 Difference]: With dead ends: 19055 [2020-12-22 08:16:53,525 INFO L226 Difference]: Without dead ends: 18624 [2020-12-22 08:16:53,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-12-22 08:16:53,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18624 states. [2020-12-22 08:16:55,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18624 to 8803. [2020-12-22 08:16:55,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8803 states. [2020-12-22 08:16:55,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8803 states to 8803 states and 12604 transitions. [2020-12-22 08:16:55,352 INFO L78 Accepts]: Start accepts. Automaton has 8803 states and 12604 transitions. Word has length 59 [2020-12-22 08:16:55,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:55,352 INFO L481 AbstractCegarLoop]: Abstraction has 8803 states and 12604 transitions. [2020-12-22 08:16:55,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 08:16:55,352 INFO L276 IsEmpty]: Start isEmpty. Operand 8803 states and 12604 transitions. [2020-12-22 08:16:55,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:16:55,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:55,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:55,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:16:55,355 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:55,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:55,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1327663405, now seen corresponding path program 1 times [2020-12-22 08:16:55,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:55,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863580081] [2020-12-22 08:16:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:55,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:55,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863580081] [2020-12-22 08:16:55,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:55,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:55,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536263855] [2020-12-22 08:16:55,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:55,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:55,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:55,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:55,417 INFO L87 Difference]: Start difference. First operand 8803 states and 12604 transitions. Second operand 3 states. [2020-12-22 08:16:58,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:58,467 INFO L93 Difference]: Finished difference Result 22385 states and 32285 transitions. [2020-12-22 08:16:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:58,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 08:16:58,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:58,484 INFO L225 Difference]: With dead ends: 22385 [2020-12-22 08:16:58,484 INFO L226 Difference]: Without dead ends: 14557 [2020-12-22 08:16:58,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:58,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14557 states. [2020-12-22 08:17:01,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14557 to 14555. [2020-12-22 08:17:01,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14555 states. [2020-12-22 08:17:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14555 states to 14555 states and 20607 transitions. [2020-12-22 08:17:01,508 INFO L78 Accepts]: Start accepts. Automaton has 14555 states and 20607 transitions. Word has length 66 [2020-12-22 08:17:01,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:01,508 INFO L481 AbstractCegarLoop]: Abstraction has 14555 states and 20607 transitions. [2020-12-22 08:17:01,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:01,508 INFO L276 IsEmpty]: Start isEmpty. Operand 14555 states and 20607 transitions. [2020-12-22 08:17:01,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:17:01,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:01,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:01,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:17:01,511 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:01,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:01,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2106166862, now seen corresponding path program 1 times [2020-12-22 08:17:01,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:01,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598657553] [2020-12-22 08:17:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:01,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598657553] [2020-12-22 08:17:01,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:01,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:17:01,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504666780] [2020-12-22 08:17:01,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:17:01,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:01,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:17:01,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:17:01,675 INFO L87 Difference]: Start difference. First operand 14555 states and 20607 transitions. Second operand 5 states. [2020-12-22 08:17:04,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:04,787 INFO L93 Difference]: Finished difference Result 26301 states and 37390 transitions. [2020-12-22 08:17:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:17:04,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 08:17:04,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:04,799 INFO L225 Difference]: With dead ends: 26301 [2020-12-22 08:17:04,799 INFO L226 Difference]: Without dead ends: 12723 [2020-12-22 08:17:04,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:17:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12723 states. [2020-12-22 08:17:07,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12723 to 12719. [2020-12-22 08:17:07,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12719 states. [2020-12-22 08:17:07,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12719 states to 12719 states and 17905 transitions. [2020-12-22 08:17:07,782 INFO L78 Accepts]: Start accepts. Automaton has 12719 states and 17905 transitions. Word has length 67 [2020-12-22 08:17:07,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:07,782 INFO L481 AbstractCegarLoop]: Abstraction has 12719 states and 17905 transitions. [2020-12-22 08:17:07,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:17:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 12719 states and 17905 transitions. [2020-12-22 08:17:07,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:17:07,786 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:07,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:07,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:17:07,786 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:07,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:07,787 INFO L82 PathProgramCache]: Analyzing trace with hash -565252104, now seen corresponding path program 1 times [2020-12-22 08:17:07,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:07,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870482295] [2020-12-22 08:17:07,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:07,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870482295] [2020-12-22 08:17:07,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:07,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:07,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596960361] [2020-12-22 08:17:07,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:07,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:07,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:07,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:07,852 INFO L87 Difference]: Start difference. First operand 12719 states and 17905 transitions. Second operand 3 states. [2020-12-22 08:17:13,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:13,184 INFO L93 Difference]: Finished difference Result 33927 states and 48003 transitions. [2020-12-22 08:17:13,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:13,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:17:13,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:13,207 INFO L225 Difference]: With dead ends: 33927 [2020-12-22 08:17:13,208 INFO L226 Difference]: Without dead ends: 22185 [2020-12-22 08:17:13,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22185 states. [2020-12-22 08:17:18,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22185 to 20883. [2020-12-22 08:17:18,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20883 states. [2020-12-22 08:17:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20883 states to 20883 states and 29229 transitions. [2020-12-22 08:17:18,304 INFO L78 Accepts]: Start accepts. Automaton has 20883 states and 29229 transitions. Word has length 69 [2020-12-22 08:17:18,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:18,304 INFO L481 AbstractCegarLoop]: Abstraction has 20883 states and 29229 transitions. [2020-12-22 08:17:18,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:18,304 INFO L276 IsEmpty]: Start isEmpty. Operand 20883 states and 29229 transitions. [2020-12-22 08:17:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:17:18,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:18,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:18,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:17:18,308 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:18,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:18,309 INFO L82 PathProgramCache]: Analyzing trace with hash -195732182, now seen corresponding path program 1 times [2020-12-22 08:17:18,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:18,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339362878] [2020-12-22 08:17:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:18,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339362878] [2020-12-22 08:17:18,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:18,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:18,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504079863] [2020-12-22 08:17:18,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:18,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:18,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:18,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:18,372 INFO L87 Difference]: Start difference. First operand 20883 states and 29229 transitions. Second operand 3 states. [2020-12-22 08:17:27,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:27,831 INFO L93 Difference]: Finished difference Result 56691 states and 79359 transitions. [2020-12-22 08:17:27,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:27,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 08:17:27,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:27,883 INFO L225 Difference]: With dead ends: 56691 [2020-12-22 08:17:27,884 INFO L226 Difference]: Without dead ends: 36745 [2020-12-22 08:17:27,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:27,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36745 states. [2020-12-22 08:17:36,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36745 to 34307. [2020-12-22 08:17:36,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34307 states. [2020-12-22 08:17:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34307 states to 34307 states and 47461 transitions. [2020-12-22 08:17:36,359 INFO L78 Accepts]: Start accepts. Automaton has 34307 states and 47461 transitions. Word has length 72 [2020-12-22 08:17:36,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:36,360 INFO L481 AbstractCegarLoop]: Abstraction has 34307 states and 47461 transitions. [2020-12-22 08:17:36,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 34307 states and 47461 transitions. [2020-12-22 08:17:36,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:17:36,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:36,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:36,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:17:36,363 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:36,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:36,363 INFO L82 PathProgramCache]: Analyzing trace with hash 950824169, now seen corresponding path program 1 times [2020-12-22 08:17:36,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:36,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027846743] [2020-12-22 08:17:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:36,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:36,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027846743] [2020-12-22 08:17:36,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:36,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:17:36,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568409602] [2020-12-22 08:17:36,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:17:36,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:36,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:17:36,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:17:36,467 INFO L87 Difference]: Start difference. First operand 34307 states and 47461 transitions. Second operand 6 states. [2020-12-22 08:17:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:53,805 INFO L93 Difference]: Finished difference Result 61671 states and 83873 transitions. [2020-12-22 08:17:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:17:53,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-12-22 08:17:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:53,875 INFO L225 Difference]: With dead ends: 61671 [2020-12-22 08:17:53,875 INFO L226 Difference]: Without dead ends: 61669 [2020-12-22 08:17:53,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:17:53,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61669 states. [2020-12-22 08:18:03,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61669 to 35849. [2020-12-22 08:18:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35849 states. [2020-12-22 08:18:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35849 states to 35849 states and 49003 transitions. [2020-12-22 08:18:03,642 INFO L78 Accepts]: Start accepts. Automaton has 35849 states and 49003 transitions. Word has length 72 [2020-12-22 08:18:03,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:03,642 INFO L481 AbstractCegarLoop]: Abstraction has 35849 states and 49003 transitions. [2020-12-22 08:18:03,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:18:03,642 INFO L276 IsEmpty]: Start isEmpty. Operand 35849 states and 49003 transitions. [2020-12-22 08:18:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:18:03,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:03,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:03,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:18:03,645 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:03,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:03,645 INFO L82 PathProgramCache]: Analyzing trace with hash -467379378, now seen corresponding path program 1 times [2020-12-22 08:18:03,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:03,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265174996] [2020-12-22 08:18:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:03,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265174996] [2020-12-22 08:18:03,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:03,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:03,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512951813] [2020-12-22 08:18:03,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:03,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:03,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:03,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:03,702 INFO L87 Difference]: Start difference. First operand 35849 states and 49003 transitions. Second operand 3 states. [2020-12-22 08:18:20,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:20,674 INFO L93 Difference]: Finished difference Result 94953 states and 128944 transitions. [2020-12-22 08:18:20,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:20,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:18:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:20,735 INFO L225 Difference]: With dead ends: 94953 [2020-12-22 08:18:20,736 INFO L226 Difference]: Without dead ends: 60045 [2020-12-22 08:18:20,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:20,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60045 states. [2020-12-22 08:18:37,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60045 to 60043. [2020-12-22 08:18:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60043 states. [2020-12-22 08:18:37,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60043 states to 60043 states and 80498 transitions. [2020-12-22 08:18:37,298 INFO L78 Accepts]: Start accepts. Automaton has 60043 states and 80498 transitions. Word has length 73 [2020-12-22 08:18:37,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:37,298 INFO L481 AbstractCegarLoop]: Abstraction has 60043 states and 80498 transitions. [2020-12-22 08:18:37,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:37,298 INFO L276 IsEmpty]: Start isEmpty. Operand 60043 states and 80498 transitions. [2020-12-22 08:18:37,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:18:37,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:37,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:37,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:18:37,303 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:37,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:37,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1003850221, now seen corresponding path program 1 times [2020-12-22 08:18:37,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:37,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629236688] [2020-12-22 08:18:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:37,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:37,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629236688] [2020-12-22 08:18:37,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:37,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:18:37,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267412714] [2020-12-22 08:18:37,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:18:37,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:37,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:18:37,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:18:37,459 INFO L87 Difference]: Start difference. First operand 60043 states and 80498 transitions. Second operand 6 states. [2020-12-22 08:19:09,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:09,555 INFO L93 Difference]: Finished difference Result 136795 states and 182701 transitions. [2020-12-22 08:19:09,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:19:09,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 08:19:09,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:09,704 INFO L225 Difference]: With dead ends: 136795 [2020-12-22 08:19:09,704 INFO L226 Difference]: Without dead ends: 110729 [2020-12-22 08:19:09,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:19:09,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110729 states.