/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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:03:57,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:03:57,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:03:57,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:03:57,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:03:57,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:03:57,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:03:57,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:03:57,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:03:57,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:03:57,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:03:57,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:03:57,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:03:57,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:03:57,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:03:57,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:03:57,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:03:57,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:03:57,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:03:57,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:03:57,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:03:57,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:03:57,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:03:57,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:03:57,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:03:58,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:03:58,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:03:58,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:03:58,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:03:58,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:03:58,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:03:58,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:03:58,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:03:58,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:03:58,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:03:58,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:03:58,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:03:58,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:03:58,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:03:58,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:03:58,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:03:58,095 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:03:58,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:03:58,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:03:58,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:03:58,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:03:58,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:03:58,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:03:58,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:03:58,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:03:58,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:03:58,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:03:58,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:03:58,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:03:58,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:03:58,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:03:58,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:03:58,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:03:58,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:03:58,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:03:58,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:03:58,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:03:58,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:03:58,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:03:58,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:03:58,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:03:58,591 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:03:58,591 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:03:58,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 09:03:58,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d11aad896/4c16b0f84f2c4c25987af0bdc4640f3f/FLAGf66c393e6 [2020-12-22 09:03:59,586 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:03:59,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 09:03:59,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d11aad896/4c16b0f84f2c4c25987af0bdc4640f3f/FLAGf66c393e6 [2020-12-22 09:03:59,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d11aad896/4c16b0f84f2c4c25987af0bdc4640f3f [2020-12-22 09:03:59,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:03:59,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:03:59,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:03:59,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:03:59,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:03:59,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:03:59" (1/1) ... [2020-12-22 09:03:59,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4977a62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:03:59, skipping insertion in model container [2020-12-22 09:03:59,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:03:59" (1/1) ... [2020-12-22 09:03:59,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:03:59,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:04:00,351 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14783,14796] [2020-12-22 09:04:00,379 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15430,15443] [2020-12-22 09:04:00,411 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16771,16784] [2020-12-22 09:04:00,425 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17831,17844] [2020-12-22 09:04:00,500 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27116,27129] [2020-12-22 09:04:00,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:04:00,586 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:04:00,770 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14783,14796] [2020-12-22 09:04:00,778 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15430,15443] [2020-12-22 09:04:00,791 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16771,16784] [2020-12-22 09:04:00,802 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17831,17844] [2020-12-22 09:04:00,890 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27116,27129] [2020-12-22 09:04:00,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:04:01,015 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:04:01,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:01 WrapperNode [2020-12-22 09:04:01,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:04:01,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:04:01,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:04:01,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:04:01,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:01" (1/1) ... [2020-12-22 09:04:01,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:01" (1/1) ... [2020-12-22 09:04:01,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:04:01,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:04:01,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:04:01,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:04:01,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:01" (1/1) ... [2020-12-22 09:04:01,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:01" (1/1) ... [2020-12-22 09:04:01,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:01" (1/1) ... [2020-12-22 09:04:01,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:01" (1/1) ... [2020-12-22 09:04:01,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:01" (1/1) ... [2020-12-22 09:04:01,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:01" (1/1) ... [2020-12-22 09:04:01,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:01" (1/1) ... [2020-12-22 09:04:01,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:04:01,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:04:01,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:04:01,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:04:01,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:01" (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 09:04:01,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:04:01,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:04:01,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:04:01,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:04:03,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:04:03,301 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:04:03,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:04:03 BoogieIcfgContainer [2020-12-22 09:04:03,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:04:03,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:04:03,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:04:03,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:04:03,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:03:59" (1/3) ... [2020-12-22 09:04:03,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc54dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:04:03, skipping insertion in model container [2020-12-22 09:04:03,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:01" (2/3) ... [2020-12-22 09:04:03,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc54dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:04:03, skipping insertion in model container [2020-12-22 09:04:03,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:04:03" (3/3) ... [2020-12-22 09:04:03,315 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 09:04:03,323 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:04:03,329 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 09:04:03,350 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 09:04:03,386 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:04:03,386 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:04:03,386 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:04:03,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:04:03,387 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:04:03,387 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:04:03,387 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:04:03,387 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:04:03,419 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states. [2020-12-22 09:04:03,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 09:04:03,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:03,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:03,455 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:03,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:03,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1495225560, now seen corresponding path program 1 times [2020-12-22 09:04:03,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:03,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064883956] [2020-12-22 09:04:03,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:04,183 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 09:04:04,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064883956] [2020-12-22 09:04:04,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:04,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:04,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229129939] [2020-12-22 09:04:04,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:04,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:04,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:04,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:04,211 INFO L87 Difference]: Start difference. First operand 400 states. Second operand 3 states. [2020-12-22 09:04:04,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:04,601 INFO L93 Difference]: Finished difference Result 737 states and 1302 transitions. [2020-12-22 09:04:04,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:04,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2020-12-22 09:04:04,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:04,642 INFO L225 Difference]: With dead ends: 737 [2020-12-22 09:04:04,642 INFO L226 Difference]: Without dead ends: 603 [2020-12-22 09:04:04,647 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 09:04:04,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-12-22 09:04:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 601. [2020-12-22 09:04:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2020-12-22 09:04:04,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 883 transitions. [2020-12-22 09:04:04,790 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 883 transitions. Word has length 145 [2020-12-22 09:04:04,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:04,791 INFO L481 AbstractCegarLoop]: Abstraction has 601 states and 883 transitions. [2020-12-22 09:04:04,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:04,791 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 883 transitions. [2020-12-22 09:04:04,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 09:04:04,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:04,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:04,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:04:04,796 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:04,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:04,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1494794584, now seen corresponding path program 1 times [2020-12-22 09:04:04,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:04,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599494062] [2020-12-22 09:04:04,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:05,241 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 09:04:05,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599494062] [2020-12-22 09:04:05,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:05,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:05,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653174991] [2020-12-22 09:04:05,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:05,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:05,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:05,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:05,248 INFO L87 Difference]: Start difference. First operand 601 states and 883 transitions. Second operand 4 states. [2020-12-22 09:04:05,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:05,463 INFO L93 Difference]: Finished difference Result 1766 states and 2586 transitions. [2020-12-22 09:04:05,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:05,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-12-22 09:04:05,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:05,472 INFO L225 Difference]: With dead ends: 1766 [2020-12-22 09:04:05,472 INFO L226 Difference]: Without dead ends: 1174 [2020-12-22 09:04:05,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:05,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2020-12-22 09:04:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1134. [2020-12-22 09:04:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1134 states. [2020-12-22 09:04:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1662 transitions. [2020-12-22 09:04:05,563 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1662 transitions. Word has length 145 [2020-12-22 09:04:05,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:05,567 INFO L481 AbstractCegarLoop]: Abstraction has 1134 states and 1662 transitions. [2020-12-22 09:04:05,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1662 transitions. [2020-12-22 09:04:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-22 09:04:05,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:05,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:05,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:04:05,578 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:05,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:05,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1642675868, now seen corresponding path program 1 times [2020-12-22 09:04:05,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:05,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125015626] [2020-12-22 09:04:05,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:05,739 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 09:04:05,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125015626] [2020-12-22 09:04:05,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:05,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:05,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870968459] [2020-12-22 09:04:05,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:05,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:05,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:05,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:05,750 INFO L87 Difference]: Start difference. First operand 1134 states and 1662 transitions. Second operand 3 states. [2020-12-22 09:04:05,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:05,891 INFO L93 Difference]: Finished difference Result 3364 states and 4924 transitions. [2020-12-22 09:04:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:05,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2020-12-22 09:04:05,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:05,922 INFO L225 Difference]: With dead ends: 3364 [2020-12-22 09:04:05,930 INFO L226 Difference]: Without dead ends: 2258 [2020-12-22 09:04:05,936 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 09:04:05,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2020-12-22 09:04:06,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1136. [2020-12-22 09:04:06,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1136 states. [2020-12-22 09:04:06,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1664 transitions. [2020-12-22 09:04:06,050 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1664 transitions. Word has length 146 [2020-12-22 09:04:06,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:06,050 INFO L481 AbstractCegarLoop]: Abstraction has 1136 states and 1664 transitions. [2020-12-22 09:04:06,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:06,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1664 transitions. [2020-12-22 09:04:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 09:04:06,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:06,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:06,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:04:06,059 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:06,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:06,062 INFO L82 PathProgramCache]: Analyzing trace with hash -341862217, now seen corresponding path program 1 times [2020-12-22 09:04:06,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:06,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243495253] [2020-12-22 09:04:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:06,473 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 09:04:06,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243495253] [2020-12-22 09:04:06,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:06,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:06,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442228899] [2020-12-22 09:04:06,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:06,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:06,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:06,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:06,479 INFO L87 Difference]: Start difference. First operand 1136 states and 1664 transitions. Second operand 4 states. [2020-12-22 09:04:06,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:06,742 INFO L93 Difference]: Finished difference Result 3294 states and 4804 transitions. [2020-12-22 09:04:06,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:06,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-12-22 09:04:06,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:06,757 INFO L225 Difference]: With dead ends: 3294 [2020-12-22 09:04:06,757 INFO L226 Difference]: Without dead ends: 2188 [2020-12-22 09:04:06,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:06,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2020-12-22 09:04:06,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2148. [2020-12-22 09:04:06,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2148 states. [2020-12-22 09:04:06,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 3121 transitions. [2020-12-22 09:04:06,924 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 3121 transitions. Word has length 147 [2020-12-22 09:04:06,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:06,925 INFO L481 AbstractCegarLoop]: Abstraction has 2148 states and 3121 transitions. [2020-12-22 09:04:06,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:06,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 3121 transitions. [2020-12-22 09:04:06,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 09:04:06,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:06,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:06,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:04:06,931 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:06,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:06,931 INFO L82 PathProgramCache]: Analyzing trace with hash -396436125, now seen corresponding path program 1 times [2020-12-22 09:04:06,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:06,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267703255] [2020-12-22 09:04:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:07,010 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 09:04:07,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267703255] [2020-12-22 09:04:07,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:07,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:07,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369825030] [2020-12-22 09:04:07,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:07,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:07,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:07,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:07,013 INFO L87 Difference]: Start difference. First operand 2148 states and 3121 transitions. Second operand 3 states. [2020-12-22 09:04:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:07,273 INFO L93 Difference]: Finished difference Result 6368 states and 9243 transitions. [2020-12-22 09:04:07,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:07,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-22 09:04:07,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:07,300 INFO L225 Difference]: With dead ends: 6368 [2020-12-22 09:04:07,301 INFO L226 Difference]: Without dead ends: 4264 [2020-12-22 09:04:07,306 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 09:04:07,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2020-12-22 09:04:07,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 2152. [2020-12-22 09:04:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2152 states. [2020-12-22 09:04:07,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3125 transitions. [2020-12-22 09:04:07,511 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3125 transitions. Word has length 148 [2020-12-22 09:04:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:07,512 INFO L481 AbstractCegarLoop]: Abstraction has 2152 states and 3125 transitions. [2020-12-22 09:04:07,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:07,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3125 transitions. [2020-12-22 09:04:07,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 09:04:07,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:07,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:07,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:04:07,518 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:07,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1864651882, now seen corresponding path program 1 times [2020-12-22 09:04:07,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:07,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451000095] [2020-12-22 09:04:07,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:07,763 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 09:04:07,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451000095] [2020-12-22 09:04:07,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:07,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:07,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366297722] [2020-12-22 09:04:07,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:07,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:07,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:07,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:07,766 INFO L87 Difference]: Start difference. First operand 2152 states and 3125 transitions. Second operand 4 states. [2020-12-22 09:04:08,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:08,154 INFO L93 Difference]: Finished difference Result 6244 states and 9035 transitions. [2020-12-22 09:04:08,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:08,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-12-22 09:04:08,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:08,177 INFO L225 Difference]: With dead ends: 6244 [2020-12-22 09:04:08,177 INFO L226 Difference]: Without dead ends: 4140 [2020-12-22 09:04:08,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:08,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2020-12-22 09:04:08,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 4100. [2020-12-22 09:04:08,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4100 states. [2020-12-22 09:04:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 5891 transitions. [2020-12-22 09:04:08,530 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 5891 transitions. Word has length 149 [2020-12-22 09:04:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:08,532 INFO L481 AbstractCegarLoop]: Abstraction has 4100 states and 5891 transitions. [2020-12-22 09:04:08,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:08,536 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 5891 transitions. [2020-12-22 09:04:08,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 09:04:08,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:08,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:08,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:04:08,547 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:08,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:08,547 INFO L82 PathProgramCache]: Analyzing trace with hash -43098910, now seen corresponding path program 1 times [2020-12-22 09:04:08,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:08,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487693576] [2020-12-22 09:04:08,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:08,621 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 09:04:08,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487693576] [2020-12-22 09:04:08,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:08,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:08,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591510188] [2020-12-22 09:04:08,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:08,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:08,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:08,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:08,625 INFO L87 Difference]: Start difference. First operand 4100 states and 5891 transitions. Second operand 3 states. [2020-12-22 09:04:09,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:09,345 INFO L93 Difference]: Finished difference Result 11864 states and 17091 transitions. [2020-12-22 09:04:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:09,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2020-12-22 09:04:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:09,399 INFO L225 Difference]: With dead ends: 11864 [2020-12-22 09:04:09,400 INFO L226 Difference]: Without dead ends: 8108 [2020-12-22 09:04:09,411 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 09:04:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8108 states. [2020-12-22 09:04:09,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8108 to 4108. [2020-12-22 09:04:09,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4108 states. [2020-12-22 09:04:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 5899 transitions. [2020-12-22 09:04:09,952 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 5899 transitions. Word has length 150 [2020-12-22 09:04:09,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:09,953 INFO L481 AbstractCegarLoop]: Abstraction has 4108 states and 5899 transitions. [2020-12-22 09:04:09,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:09,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 5899 transitions. [2020-12-22 09:04:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 09:04:09,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:09,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:09,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:04:09,963 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:09,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:09,964 INFO L82 PathProgramCache]: Analyzing trace with hash 352323364, now seen corresponding path program 1 times [2020-12-22 09:04:09,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:09,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113598343] [2020-12-22 09:04:09,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:10,255 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 09:04:10,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113598343] [2020-12-22 09:04:10,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:10,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:04:10,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873998588] [2020-12-22 09:04:10,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:04:10,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:10,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:04:10,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:10,263 INFO L87 Difference]: Start difference. First operand 4108 states and 5899 transitions. Second operand 5 states. [2020-12-22 09:04:10,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:10,974 INFO L93 Difference]: Finished difference Result 11938 states and 17074 transitions. [2020-12-22 09:04:10,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:10,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-12-22 09:04:10,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:11,023 INFO L225 Difference]: With dead ends: 11938 [2020-12-22 09:04:11,023 INFO L226 Difference]: Without dead ends: 7918 [2020-12-22 09:04:11,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:11,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2020-12-22 09:04:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7878. [2020-12-22 09:04:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7878 states. [2020-12-22 09:04:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7878 states to 7878 states and 11156 transitions. [2020-12-22 09:04:11,686 INFO L78 Accepts]: Start accepts. Automaton has 7878 states and 11156 transitions. Word has length 151 [2020-12-22 09:04:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:11,687 INFO L481 AbstractCegarLoop]: Abstraction has 7878 states and 11156 transitions. [2020-12-22 09:04:11,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:04:11,687 INFO L276 IsEmpty]: Start isEmpty. Operand 7878 states and 11156 transitions. [2020-12-22 09:04:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 09:04:11,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:11,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:11,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:04:11,699 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:11,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:11,700 INFO L82 PathProgramCache]: Analyzing trace with hash 2046933493, now seen corresponding path program 1 times [2020-12-22 09:04:11,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:11,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400526412] [2020-12-22 09:04:11,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:11,931 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 09:04:11,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400526412] [2020-12-22 09:04:11,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:11,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:11,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495370134] [2020-12-22 09:04:11,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:11,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:11,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:11,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:11,934 INFO L87 Difference]: Start difference. First operand 7878 states and 11156 transitions. Second operand 4 states. [2020-12-22 09:04:12,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:12,499 INFO L93 Difference]: Finished difference Result 13828 states and 19563 transitions. [2020-12-22 09:04:12,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:12,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-12-22 09:04:12,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:12,516 INFO L225 Difference]: With dead ends: 13828 [2020-12-22 09:04:12,516 INFO L226 Difference]: Without dead ends: 6024 [2020-12-22 09:04:12,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:12,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2020-12-22 09:04:13,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 6024. [2020-12-22 09:04:13,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6024 states. [2020-12-22 09:04:13,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 8510 transitions. [2020-12-22 09:04:13,091 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 8510 transitions. Word has length 151 [2020-12-22 09:04:13,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:13,092 INFO L481 AbstractCegarLoop]: Abstraction has 6024 states and 8510 transitions. [2020-12-22 09:04:13,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:13,092 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 8510 transitions. [2020-12-22 09:04:13,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 09:04:13,104 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:13,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:13,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:04:13,105 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:13,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:13,106 INFO L82 PathProgramCache]: Analyzing trace with hash 491709017, now seen corresponding path program 1 times [2020-12-22 09:04:13,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:13,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215556221] [2020-12-22 09:04:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:13,194 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 09:04:13,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215556221] [2020-12-22 09:04:13,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:13,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:13,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238544266] [2020-12-22 09:04:13,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:13,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:13,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:13,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:13,197 INFO L87 Difference]: Start difference. First operand 6024 states and 8510 transitions. Second operand 3 states. [2020-12-22 09:04:13,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:13,789 INFO L93 Difference]: Finished difference Result 13066 states and 18995 transitions. [2020-12-22 09:04:13,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:13,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2020-12-22 09:04:13,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:13,811 INFO L225 Difference]: With dead ends: 13066 [2020-12-22 09:04:13,811 INFO L226 Difference]: Without dead ends: 7666 [2020-12-22 09:04:13,821 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 09:04:13,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7666 states. [2020-12-22 09:04:14,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7666 to 7568. [2020-12-22 09:04:14,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7568 states. [2020-12-22 09:04:14,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7568 states to 7568 states and 10998 transitions. [2020-12-22 09:04:14,474 INFO L78 Accepts]: Start accepts. Automaton has 7568 states and 10998 transitions. Word has length 152 [2020-12-22 09:04:14,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:14,475 INFO L481 AbstractCegarLoop]: Abstraction has 7568 states and 10998 transitions. [2020-12-22 09:04:14,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:14,475 INFO L276 IsEmpty]: Start isEmpty. Operand 7568 states and 10998 transitions. [2020-12-22 09:04:14,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 09:04:14,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:14,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:14,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:04:14,485 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:14,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:14,486 INFO L82 PathProgramCache]: Analyzing trace with hash 587839742, now seen corresponding path program 1 times [2020-12-22 09:04:14,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:14,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546694567] [2020-12-22 09:04:14,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:14,757 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 09:04:14,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546694567] [2020-12-22 09:04:14,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:14,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:04:14,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033696645] [2020-12-22 09:04:14,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 09:04:14,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:14,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 09:04:14,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:04:14,762 INFO L87 Difference]: Start difference. First operand 7568 states and 10998 transitions. Second operand 8 states. [2020-12-22 09:04:17,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:17,508 INFO L93 Difference]: Finished difference Result 22626 states and 34146 transitions. [2020-12-22 09:04:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 09:04:17,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 155 [2020-12-22 09:04:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:17,549 INFO L225 Difference]: With dead ends: 22626 [2020-12-22 09:04:17,549 INFO L226 Difference]: Without dead ends: 15820 [2020-12-22 09:04:17,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:04:17,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15820 states. [2020-12-22 09:04:18,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15820 to 9124. [2020-12-22 09:04:18,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9124 states. [2020-12-22 09:04:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9124 states to 9124 states and 13212 transitions. [2020-12-22 09:04:18,353 INFO L78 Accepts]: Start accepts. Automaton has 9124 states and 13212 transitions. Word has length 155 [2020-12-22 09:04:18,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:18,354 INFO L481 AbstractCegarLoop]: Abstraction has 9124 states and 13212 transitions. [2020-12-22 09:04:18,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 09:04:18,354 INFO L276 IsEmpty]: Start isEmpty. Operand 9124 states and 13212 transitions. [2020-12-22 09:04:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 09:04:18,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:18,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:18,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:04:18,364 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:18,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:18,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1193349574, now seen corresponding path program 1 times [2020-12-22 09:04:18,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:18,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830916579] [2020-12-22 09:04:18,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:18,557 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 09:04:18,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830916579] [2020-12-22 09:04:18,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:18,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:18,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442520754] [2020-12-22 09:04:18,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:18,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:18,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:18,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:18,560 INFO L87 Difference]: Start difference. First operand 9124 states and 13212 transitions. Second operand 4 states. [2020-12-22 09:04:19,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:19,910 INFO L93 Difference]: Finished difference Result 24262 states and 35109 transitions. [2020-12-22 09:04:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:19,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-12-22 09:04:19,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:19,951 INFO L225 Difference]: With dead ends: 24262 [2020-12-22 09:04:19,951 INFO L226 Difference]: Without dead ends: 15272 [2020-12-22 09:04:19,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:19,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15272 states. [2020-12-22 09:04:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15272 to 15238. [2020-12-22 09:04:21,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15238 states. [2020-12-22 09:04:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15238 states to 15238 states and 21794 transitions. [2020-12-22 09:04:21,385 INFO L78 Accepts]: Start accepts. Automaton has 15238 states and 21794 transitions. Word has length 155 [2020-12-22 09:04:21,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:21,385 INFO L481 AbstractCegarLoop]: Abstraction has 15238 states and 21794 transitions. [2020-12-22 09:04:21,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:21,385 INFO L276 IsEmpty]: Start isEmpty. Operand 15238 states and 21794 transitions. [2020-12-22 09:04:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 09:04:21,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:21,402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:21,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:04:21,402 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:21,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:21,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1194235350, now seen corresponding path program 1 times [2020-12-22 09:04:21,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:21,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329830736] [2020-12-22 09:04:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:21,617 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 09:04:21,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329830736] [2020-12-22 09:04:21,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:21,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:21,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333246597] [2020-12-22 09:04:21,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:21,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:21,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:21,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:21,620 INFO L87 Difference]: Start difference. First operand 15238 states and 21794 transitions. Second operand 4 states. [2020-12-22 09:04:22,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:22,873 INFO L93 Difference]: Finished difference Result 27768 states and 39815 transitions. [2020-12-22 09:04:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:22,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-12-22 09:04:22,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:22,912 INFO L225 Difference]: With dead ends: 27768 [2020-12-22 09:04:22,912 INFO L226 Difference]: Without dead ends: 15238 [2020-12-22 09:04:22,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:22,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15238 states. [2020-12-22 09:04:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15238 to 15238. [2020-12-22 09:04:24,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15238 states. [2020-12-22 09:04:24,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15238 states to 15238 states and 21793 transitions. [2020-12-22 09:04:24,426 INFO L78 Accepts]: Start accepts. Automaton has 15238 states and 21793 transitions. Word has length 157 [2020-12-22 09:04:24,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:24,426 INFO L481 AbstractCegarLoop]: Abstraction has 15238 states and 21793 transitions. [2020-12-22 09:04:24,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:24,426 INFO L276 IsEmpty]: Start isEmpty. Operand 15238 states and 21793 transitions. [2020-12-22 09:04:24,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 09:04:24,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:24,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:24,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:04:24,453 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:24,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:24,454 INFO L82 PathProgramCache]: Analyzing trace with hash 930860647, now seen corresponding path program 1 times [2020-12-22 09:04:24,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:24,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130920865] [2020-12-22 09:04:24,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:24,574 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 09:04:24,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130920865] [2020-12-22 09:04:24,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:24,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:24,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707421869] [2020-12-22 09:04:24,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:24,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:24,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:24,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:24,576 INFO L87 Difference]: Start difference. First operand 15238 states and 21793 transitions. Second operand 3 states. [2020-12-22 09:04:26,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:26,474 INFO L93 Difference]: Finished difference Result 37005 states and 53276 transitions. [2020-12-22 09:04:26,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:26,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-12-22 09:04:26,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:26,528 INFO L225 Difference]: With dead ends: 37005 [2020-12-22 09:04:26,528 INFO L226 Difference]: Without dead ends: 23221 [2020-12-22 09:04:26,561 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 09:04:26,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23221 states. [2020-12-22 09:04:28,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23221 to 23191. [2020-12-22 09:04:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23191 states. [2020-12-22 09:04:28,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23191 states to 23191 states and 32740 transitions. [2020-12-22 09:04:28,271 INFO L78 Accepts]: Start accepts. Automaton has 23191 states and 32740 transitions. Word has length 157 [2020-12-22 09:04:28,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:28,271 INFO L481 AbstractCegarLoop]: Abstraction has 23191 states and 32740 transitions. [2020-12-22 09:04:28,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:28,271 INFO L276 IsEmpty]: Start isEmpty. Operand 23191 states and 32740 transitions. [2020-12-22 09:04:28,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 09:04:28,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:28,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:28,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:04:28,290 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:28,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:28,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1036498047, now seen corresponding path program 1 times [2020-12-22 09:04:28,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:28,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521037689] [2020-12-22 09:04:28,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:28,377 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 09:04:28,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521037689] [2020-12-22 09:04:28,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:28,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:28,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996506840] [2020-12-22 09:04:28,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:28,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:28,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:28,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:28,380 INFO L87 Difference]: Start difference. First operand 23191 states and 32740 transitions. Second operand 3 states. [2020-12-22 09:04:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:31,120 INFO L93 Difference]: Finished difference Result 53069 states and 76203 transitions. [2020-12-22 09:04:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:31,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-12-22 09:04:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:31,188 INFO L225 Difference]: With dead ends: 53069 [2020-12-22 09:04:31,189 INFO L226 Difference]: Without dead ends: 35071 [2020-12-22 09:04:31,210 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 09:04:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35071 states. [2020-12-22 09:04:33,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35071 to 32037. [2020-12-22 09:04:33,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32037 states. [2020-12-22 09:04:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32037 states to 32037 states and 46456 transitions. [2020-12-22 09:04:34,026 INFO L78 Accepts]: Start accepts. Automaton has 32037 states and 46456 transitions. Word has length 161 [2020-12-22 09:04:34,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:34,026 INFO L481 AbstractCegarLoop]: Abstraction has 32037 states and 46456 transitions. [2020-12-22 09:04:34,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:34,026 INFO L276 IsEmpty]: Start isEmpty. Operand 32037 states and 46456 transitions. [2020-12-22 09:04:34,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 09:04:34,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:34,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:34,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:04:34,046 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:34,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:34,047 INFO L82 PathProgramCache]: Analyzing trace with hash -2040023043, now seen corresponding path program 1 times [2020-12-22 09:04:34,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:34,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683634251] [2020-12-22 09:04:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:34,365 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 09:04:34,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683634251] [2020-12-22 09:04:34,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:34,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 09:04:34,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926182681] [2020-12-22 09:04:34,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 09:04:34,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:34,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 09:04:34,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-22 09:04:34,370 INFO L87 Difference]: Start difference. First operand 32037 states and 46456 transitions. Second operand 10 states. [2020-12-22 09:04:34,528 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-12-22 09:04:44,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:44,402 INFO L93 Difference]: Finished difference Result 126861 states and 188903 transitions. [2020-12-22 09:04:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 09:04:44,403 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2020-12-22 09:04:44,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:44,600 INFO L225 Difference]: With dead ends: 126861 [2020-12-22 09:04:44,600 INFO L226 Difference]: Without dead ends: 99278 [2020-12-22 09:04:44,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2020-12-22 09:04:44,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99278 states. [2020-12-22 09:04:51,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99278 to 66186. [2020-12-22 09:04:51,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66186 states. [2020-12-22 09:04:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66186 states to 66186 states and 97329 transitions. [2020-12-22 09:04:51,342 INFO L78 Accepts]: Start accepts. Automaton has 66186 states and 97329 transitions. Word has length 161 [2020-12-22 09:04:51,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:51,342 INFO L481 AbstractCegarLoop]: Abstraction has 66186 states and 97329 transitions. [2020-12-22 09:04:51,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 09:04:51,342 INFO L276 IsEmpty]: Start isEmpty. Operand 66186 states and 97329 transitions. [2020-12-22 09:04:51,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 09:04:51,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:51,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:51,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:04:51,356 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:04:51,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:51,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1753304748, now seen corresponding path program 1 times [2020-12-22 09:04:51,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:51,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098812851] [2020-12-22 09:04:51,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:51,717 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 09:04:51,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098812851] [2020-12-22 09:04:51,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:51,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:51,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334550510] [2020-12-22 09:04:51,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:51,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:51,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:51,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:51,720 INFO L87 Difference]: Start difference. First operand 66186 states and 97329 transitions. Second operand 4 states. [2020-12-22 09:04:56,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:56,468 INFO L93 Difference]: Finished difference Result 117926 states and 173124 transitions. [2020-12-22 09:04:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:56,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-12-22 09:04:56,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:56,539 INFO L225 Difference]: With dead ends: 117926 [2020-12-22 09:04:56,539 INFO L226 Difference]: Without dead ends: 51798 [2020-12-22 09:04:56,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:56,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51798 states. [2020-12-22 09:05:01,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51798 to 51798. [2020-12-22 09:05:01,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51798 states. [2020-12-22 09:05:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51798 states to 51798 states and 75868 transitions. [2020-12-22 09:05:01,786 INFO L78 Accepts]: Start accepts. Automaton has 51798 states and 75868 transitions. Word has length 161 [2020-12-22 09:05:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:01,786 INFO L481 AbstractCegarLoop]: Abstraction has 51798 states and 75868 transitions. [2020-12-22 09:05:01,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:01,787 INFO L276 IsEmpty]: Start isEmpty. Operand 51798 states and 75868 transitions. [2020-12-22 09:05:01,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 09:05:01,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:01,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:01,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 09:05:01,796 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:01,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:01,797 INFO L82 PathProgramCache]: Analyzing trace with hash 283859823, now seen corresponding path program 1 times [2020-12-22 09:05:01,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:01,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012868336] [2020-12-22 09:05:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:01,878 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 09:05:01,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012868336] [2020-12-22 09:05:01,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:01,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:01,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015377391] [2020-12-22 09:05:01,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:01,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:01,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:01,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:01,881 INFO L87 Difference]: Start difference. First operand 51798 states and 75868 transitions. Second operand 3 states. [2020-12-22 09:05:09,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:09,314 INFO L93 Difference]: Finished difference Result 124726 states and 184051 transitions. [2020-12-22 09:05:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:09,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-12-22 09:05:09,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:09,430 INFO L225 Difference]: With dead ends: 124726 [2020-12-22 09:05:09,430 INFO L226 Difference]: Without dead ends: 81101 [2020-12-22 09:05:09,468 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 09:05:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81101 states. [2020-12-22 09:05:16,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81101 to 76604. [2020-12-22 09:05:16,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76604 states. [2020-12-22 09:05:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76604 states to 76604 states and 113413 transitions. [2020-12-22 09:05:16,803 INFO L78 Accepts]: Start accepts. Automaton has 76604 states and 113413 transitions. Word has length 163 [2020-12-22 09:05:16,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:16,804 INFO L481 AbstractCegarLoop]: Abstraction has 76604 states and 113413 transitions. [2020-12-22 09:05:16,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:16,804 INFO L276 IsEmpty]: Start isEmpty. Operand 76604 states and 113413 transitions. [2020-12-22 09:05:16,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-12-22 09:05:16,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:16,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:16,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 09:05:16,811 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:16,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:16,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1424386545, now seen corresponding path program 1 times [2020-12-22 09:05:16,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:16,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6502389] [2020-12-22 09:05:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:17,033 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 09:05:17,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6502389] [2020-12-22 09:05:17,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:17,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 09:05:17,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290576490] [2020-12-22 09:05:17,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 09:05:17,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:17,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 09:05:17,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:05:17,037 INFO L87 Difference]: Start difference. First operand 76604 states and 113413 transitions. Second operand 9 states. [2020-12-22 09:05:50,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:50,596 INFO L93 Difference]: Finished difference Result 391051 states and 575679 transitions. [2020-12-22 09:05:50,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 09:05:50,596 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-12-22 09:05:50,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:51,518 INFO L225 Difference]: With dead ends: 391051 [2020-12-22 09:05:51,518 INFO L226 Difference]: Without dead ends: 315309 [2020-12-22 09:05:51,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2020-12-22 09:05:51,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315309 states. [2020-12-22 09:06:12,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315309 to 184499. [2020-12-22 09:06:12,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184499 states. [2020-12-22 09:06:13,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184499 states to 184499 states and 272333 transitions. [2020-12-22 09:06:13,594 INFO L78 Accepts]: Start accepts. Automaton has 184499 states and 272333 transitions. Word has length 166 [2020-12-22 09:06:13,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:13,594 INFO L481 AbstractCegarLoop]: Abstraction has 184499 states and 272333 transitions. [2020-12-22 09:06:13,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 09:06:13,594 INFO L276 IsEmpty]: Start isEmpty. Operand 184499 states and 272333 transitions. [2020-12-22 09:06:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-12-22 09:06:13,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:13,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:13,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 09:06:13,617 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:13,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:13,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1436792708, now seen corresponding path program 1 times [2020-12-22 09:06:13,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:13,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582866827] [2020-12-22 09:06:13,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:13,834 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 09:06:13,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582866827] [2020-12-22 09:06:13,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:13,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:06:13,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104946193] [2020-12-22 09:06:13,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:06:13,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:13,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:06:13,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:06:13,837 INFO L87 Difference]: Start difference. First operand 184499 states and 272333 transitions. Second operand 4 states.