/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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:02:55,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:02:55,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:02:55,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:02:55,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:02:55,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:02:55,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:02:55,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:02:55,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:02:55,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:02:55,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:02:55,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:02:55,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:02:55,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:02:55,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:02:55,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:02:55,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:02:55,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:02:55,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:02:55,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:02:55,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:02:55,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:02:55,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:02:55,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:02:55,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:02:55,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:02:55,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:02:55,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:02:55,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:02:55,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:02:55,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:02:55,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:02:55,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:02:55,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:02:55,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:02:55,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:02:55,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:02:55,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:02:55,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:02:55,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:02:55,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:02:55,624 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:02:55,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:02:55,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:02:55,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:02:55,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:02:55,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:02:55,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:02:55,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:02:55,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:02:55,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:02:55,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:02:55,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:02:55,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:02:55,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:02:55,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:02:55,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:02:55,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:02:55,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:02:55,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:02:55,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:02:55,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:02:55,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:02:56,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:02:56,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:02:56,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:02:56,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:02:56,043 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:02:56,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 09:02:56,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed96fc2d/a5fd18987dd24343af6bf6e39e0a77e0/FLAG58baa5d0f [2020-12-22 09:02:57,015 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:02:57,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 09:02:57,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed96fc2d/a5fd18987dd24343af6bf6e39e0a77e0/FLAG58baa5d0f [2020-12-22 09:02:57,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed96fc2d/a5fd18987dd24343af6bf6e39e0a77e0 [2020-12-22 09:02:57,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:02:57,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:02:57,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:02:57,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:02:57,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:02:57,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:02:57" (1/1) ... [2020-12-22 09:02:57,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c2c1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:02:57, skipping insertion in model container [2020-12-22 09:02:57,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:02:57" (1/1) ... [2020-12-22 09:02:57,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:02:57,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:02:57,735 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15209,15222] [2020-12-22 09:02:57,761 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16269,16282] [2020-12-22 09:02:57,985 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[28577,28590] [2020-12-22 09:02:58,005 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[29224,29237] [2020-12-22 09:02:58,034 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[30565,30578] [2020-12-22 09:02:58,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:02:58,125 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:02:58,287 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15209,15222] [2020-12-22 09:02:58,307 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16269,16282] [2020-12-22 09:02:58,442 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[28577,28590] [2020-12-22 09:02:58,451 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[29224,29237] [2020-12-22 09:02:58,476 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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[30565,30578] [2020-12-22 09:02:58,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:02:58,548 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:02:58,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:02:58 WrapperNode [2020-12-22 09:02:58,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:02:58,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:02:58,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:02:58,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:02:58,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:02:58" (1/1) ... [2020-12-22 09:02:58,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:02:58" (1/1) ... [2020-12-22 09:02:58,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:02:58,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:02:58,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:02:58,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:02:58,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:02:58" (1/1) ... [2020-12-22 09:02:58,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:02:58" (1/1) ... [2020-12-22 09:02:58,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:02:58" (1/1) ... [2020-12-22 09:02:58,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:02:58" (1/1) ... [2020-12-22 09:02:58,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:02:58" (1/1) ... [2020-12-22 09:02:58,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:02:58" (1/1) ... [2020-12-22 09:02:58,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:02:58" (1/1) ... [2020-12-22 09:02:58,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:02:58,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:02:58,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:02:58,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:02:58,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:02:58" (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 09:02:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:02:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:02:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:02:58,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:03:00,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:03:00,619 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:03:00,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:03:00 BoogieIcfgContainer [2020-12-22 09:03:00,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:03:00,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:03:00,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:03:00,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:03:00,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:02:57" (1/3) ... [2020-12-22 09:03:00,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc14324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:03:00, skipping insertion in model container [2020-12-22 09:03:00,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:02:58" (2/3) ... [2020-12-22 09:03:00,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc14324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:03:00, skipping insertion in model container [2020-12-22 09:03:00,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:03:00" (3/3) ... [2020-12-22 09:03:00,630 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 09:03:00,637 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:03:00,642 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 09:03:00,661 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 09:03:00,691 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:03:00,692 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:03:00,692 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:03:00,692 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:03:00,692 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:03:00,692 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:03:00,692 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:03:00,693 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:03:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-12-22 09:03:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 09:03:00,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:00,734 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 09:03:00,735 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 09:03:00,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:00,741 INFO L82 PathProgramCache]: Analyzing trace with hash -969410714, now seen corresponding path program 1 times [2020-12-22 09:03:00,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:00,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988755985] [2020-12-22 09:03:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:01,488 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 09:03:01,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988755985] [2020-12-22 09:03:01,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:01,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:03:01,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642139727] [2020-12-22 09:03:01,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:03:01,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:01,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:03:01,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:01,513 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 3 states. [2020-12-22 09:03:01,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:01,733 INFO L93 Difference]: Finished difference Result 742 states and 1300 transitions. [2020-12-22 09:03:01,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:03:01,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-22 09:03:01,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:01,780 INFO L225 Difference]: With dead ends: 742 [2020-12-22 09:03:01,780 INFO L226 Difference]: Without dead ends: 595 [2020-12-22 09:03:01,785 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 09:03:01,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2020-12-22 09:03:01,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 593. [2020-12-22 09:03:01,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-12-22 09:03:01,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 872 transitions. [2020-12-22 09:03:01,904 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 872 transitions. Word has length 148 [2020-12-22 09:03:01,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:01,905 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 872 transitions. [2020-12-22 09:03:01,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 872 transitions. [2020-12-22 09:03:01,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 09:03:01,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:01,910 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 09:03:01,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:03:01,911 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 09:03:01,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:01,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1257328890, now seen corresponding path program 1 times [2020-12-22 09:03:01,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:01,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170554416] [2020-12-22 09:03:01,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:02,417 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 09:03:02,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170554416] [2020-12-22 09:03:02,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:02,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:03:02,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706282762] [2020-12-22 09:03:02,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:03:02,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:02,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:03:02,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:03:02,423 INFO L87 Difference]: Start difference. First operand 593 states and 872 transitions. Second operand 4 states. [2020-12-22 09:03:02,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:02,608 INFO L93 Difference]: Finished difference Result 1733 states and 2539 transitions. [2020-12-22 09:03:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:02,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-12-22 09:03:02,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:02,615 INFO L225 Difference]: With dead ends: 1733 [2020-12-22 09:03:02,616 INFO L226 Difference]: Without dead ends: 1149 [2020-12-22 09:03:02,620 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 09:03:02,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2020-12-22 09:03:02,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1123. [2020-12-22 09:03:02,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-12-22 09:03:02,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1643 transitions. [2020-12-22 09:03:02,680 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1643 transitions. Word has length 148 [2020-12-22 09:03:02,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:02,681 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1643 transitions. [2020-12-22 09:03:02,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:03:02,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1643 transitions. [2020-12-22 09:03:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 09:03:02,687 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:02,687 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 09:03:02,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:03:02,688 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 09:03:02,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:02,688 INFO L82 PathProgramCache]: Analyzing trace with hash 56469786, now seen corresponding path program 1 times [2020-12-22 09:03:02,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:02,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611542062] [2020-12-22 09:03:02,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:02,767 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 09:03:02,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611542062] [2020-12-22 09:03:02,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:02,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:03:02,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313281796] [2020-12-22 09:03:02,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:03:02,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:02,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:03:02,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:02,771 INFO L87 Difference]: Start difference. First operand 1123 states and 1643 transitions. Second operand 3 states. [2020-12-22 09:03:02,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:02,869 INFO L93 Difference]: Finished difference Result 3331 states and 4867 transitions. [2020-12-22 09:03:02,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:03:02,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-12-22 09:03:02,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:02,883 INFO L225 Difference]: With dead ends: 3331 [2020-12-22 09:03:02,883 INFO L226 Difference]: Without dead ends: 2236 [2020-12-22 09:03:02,886 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 09:03:02,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2020-12-22 09:03:02,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1125. [2020-12-22 09:03:02,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-12-22 09:03:02,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1645 transitions. [2020-12-22 09:03:02,985 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1645 transitions. Word has length 149 [2020-12-22 09:03:02,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:02,986 INFO L481 AbstractCegarLoop]: Abstraction has 1125 states and 1645 transitions. [2020-12-22 09:03:02,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:02,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1645 transitions. [2020-12-22 09:03:02,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 09:03:02,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:02,994 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 09:03:02,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:03:02,995 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 09:03:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:02,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1493517127, now seen corresponding path program 1 times [2020-12-22 09:03:02,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:02,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811856574] [2020-12-22 09:03:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:03,473 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 09:03:03,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811856574] [2020-12-22 09:03:03,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:03,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:03:03,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628917320] [2020-12-22 09:03:03,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:03:03,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:03,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:03:03,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:03:03,481 INFO L87 Difference]: Start difference. First operand 1125 states and 1645 transitions. Second operand 4 states. [2020-12-22 09:03:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:03,709 INFO L93 Difference]: Finished difference Result 3257 states and 4739 transitions. [2020-12-22 09:03:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:03,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-12-22 09:03:03,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:03,726 INFO L225 Difference]: With dead ends: 3257 [2020-12-22 09:03:03,726 INFO L226 Difference]: Without dead ends: 2162 [2020-12-22 09:03:03,731 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 09:03:03,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2020-12-22 09:03:03,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 2136. [2020-12-22 09:03:03,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-12-22 09:03:03,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3093 transitions. [2020-12-22 09:03:03,908 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3093 transitions. Word has length 150 [2020-12-22 09:03:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:03,909 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3093 transitions. [2020-12-22 09:03:03,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:03:03,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3093 transitions. [2020-12-22 09:03:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 09:03:03,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:03,934 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 09:03:03,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:03:03,936 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 09:03:03,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:03,936 INFO L82 PathProgramCache]: Analyzing trace with hash 403786939, now seen corresponding path program 1 times [2020-12-22 09:03:03,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:03,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698359846] [2020-12-22 09:03:03,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:04,006 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 09:03:04,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698359846] [2020-12-22 09:03:04,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:04,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:03:04,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328376442] [2020-12-22 09:03:04,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:03:04,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:04,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:03:04,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:04,009 INFO L87 Difference]: Start difference. First operand 2136 states and 3093 transitions. Second operand 3 states. [2020-12-22 09:03:04,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:04,270 INFO L93 Difference]: Finished difference Result 6332 states and 9159 transitions. [2020-12-22 09:03:04,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:03:04,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2020-12-22 09:03:04,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:04,297 INFO L225 Difference]: With dead ends: 6332 [2020-12-22 09:03:04,297 INFO L226 Difference]: Without dead ends: 4240 [2020-12-22 09:03:04,304 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 09:03:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4240 states. [2020-12-22 09:03:04,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4240 to 2140. [2020-12-22 09:03:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2140 states. [2020-12-22 09:03:04,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 3097 transitions. [2020-12-22 09:03:04,543 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 3097 transitions. Word has length 151 [2020-12-22 09:03:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:04,545 INFO L481 AbstractCegarLoop]: Abstraction has 2140 states and 3097 transitions. [2020-12-22 09:03:04,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:04,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 3097 transitions. [2020-12-22 09:03:04,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 09:03:04,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:04,549 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 09:03:04,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:03:04,550 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 09:03:04,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:04,551 INFO L82 PathProgramCache]: Analyzing trace with hash -865780987, now seen corresponding path program 1 times [2020-12-22 09:03:04,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:04,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546399578] [2020-12-22 09:03:04,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:04,694 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 09:03:04,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546399578] [2020-12-22 09:03:04,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:04,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:03:04,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618078632] [2020-12-22 09:03:04,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:03:04,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:04,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:03:04,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:04,698 INFO L87 Difference]: Start difference. First operand 2140 states and 3097 transitions. Second operand 3 states. [2020-12-22 09:03:05,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:05,008 INFO L93 Difference]: Finished difference Result 5573 states and 8064 transitions. [2020-12-22 09:03:05,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:03:05,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2020-12-22 09:03:05,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:05,025 INFO L225 Difference]: With dead ends: 5573 [2020-12-22 09:03:05,026 INFO L226 Difference]: Without dead ends: 3769 [2020-12-22 09:03:05,029 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 09:03:05,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2020-12-22 09:03:05,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3743. [2020-12-22 09:03:05,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3743 states. [2020-12-22 09:03:05,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 5340 transitions. [2020-12-22 09:03:05,291 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 5340 transitions. Word has length 152 [2020-12-22 09:03:05,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:05,292 INFO L481 AbstractCegarLoop]: Abstraction has 3743 states and 5340 transitions. [2020-12-22 09:03:05,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 5340 transitions. [2020-12-22 09:03:05,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 09:03:05,301 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:05,302 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 09:03:05,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:03:05,302 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 09:03:05,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:05,303 INFO L82 PathProgramCache]: Analyzing trace with hash 471058402, now seen corresponding path program 1 times [2020-12-22 09:03:05,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:05,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110431359] [2020-12-22 09:03:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:05,534 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 09:03:05,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110431359] [2020-12-22 09:03:05,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:05,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:03:05,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703459314] [2020-12-22 09:03:05,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:03:05,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:05,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:03:05,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:03:05,538 INFO L87 Difference]: Start difference. First operand 3743 states and 5340 transitions. Second operand 5 states. [2020-12-22 09:03:06,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:06,338 INFO L93 Difference]: Finished difference Result 10650 states and 15175 transitions. [2020-12-22 09:03:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:06,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-12-22 09:03:06,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:06,375 INFO L225 Difference]: With dead ends: 10650 [2020-12-22 09:03:06,375 INFO L226 Difference]: Without dead ends: 6944 [2020-12-22 09:03:06,384 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 09:03:06,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6944 states. [2020-12-22 09:03:06,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6944 to 6923. [2020-12-22 09:03:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6923 states. [2020-12-22 09:03:06,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6923 states to 6923 states and 9781 transitions. [2020-12-22 09:03:06,974 INFO L78 Accepts]: Start accepts. Automaton has 6923 states and 9781 transitions. Word has length 152 [2020-12-22 09:03:06,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:06,974 INFO L481 AbstractCegarLoop]: Abstraction has 6923 states and 9781 transitions. [2020-12-22 09:03:06,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:03:06,975 INFO L276 IsEmpty]: Start isEmpty. Operand 6923 states and 9781 transitions. [2020-12-22 09:03:06,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 09:03:06,986 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:06,986 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 09:03:06,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:03:06,987 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 09:03:06,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:06,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1318458360, now seen corresponding path program 1 times [2020-12-22 09:03:06,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:06,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399482678] [2020-12-22 09:03:06,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:07,251 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 09:03:07,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399482678] [2020-12-22 09:03:07,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:07,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:03:07,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699446503] [2020-12-22 09:03:07,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:03:07,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:07,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:03:07,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:03:07,259 INFO L87 Difference]: Start difference. First operand 6923 states and 9781 transitions. Second operand 4 states. [2020-12-22 09:03:07,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:07,801 INFO L93 Difference]: Finished difference Result 14142 states and 19881 transitions. [2020-12-22 09:03:07,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:07,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-12-22 09:03:07,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:07,895 INFO L225 Difference]: With dead ends: 14142 [2020-12-22 09:03:07,895 INFO L226 Difference]: Without dead ends: 7336 [2020-12-22 09:03:07,904 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 09:03:07,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7336 states. [2020-12-22 09:03:08,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7336 to 7151. [2020-12-22 09:03:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7151 states. [2020-12-22 09:03:08,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7151 states to 7151 states and 10037 transitions. [2020-12-22 09:03:08,369 INFO L78 Accepts]: Start accepts. Automaton has 7151 states and 10037 transitions. Word has length 152 [2020-12-22 09:03:08,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:08,370 INFO L481 AbstractCegarLoop]: Abstraction has 7151 states and 10037 transitions. [2020-12-22 09:03:08,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:03:08,370 INFO L276 IsEmpty]: Start isEmpty. Operand 7151 states and 10037 transitions. [2020-12-22 09:03:08,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 09:03:08,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:08,385 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] [2020-12-22 09:03:08,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:03:08,385 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 09:03:08,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:08,386 INFO L82 PathProgramCache]: Analyzing trace with hash -756425508, now seen corresponding path program 1 times [2020-12-22 09:03:08,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:08,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949877812] [2020-12-22 09:03:08,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:08,512 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 09:03:08,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949877812] [2020-12-22 09:03:08,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:08,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:03:08,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605514512] [2020-12-22 09:03:08,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:03:08,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:08,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:03:08,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:08,515 INFO L87 Difference]: Start difference. First operand 7151 states and 10037 transitions. Second operand 3 states. [2020-12-22 09:03:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:09,357 INFO L93 Difference]: Finished difference Result 20719 states and 29169 transitions. [2020-12-22 09:03:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:03:09,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-12-22 09:03:09,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:09,391 INFO L225 Difference]: With dead ends: 20719 [2020-12-22 09:03:09,391 INFO L226 Difference]: Without dead ends: 14177 [2020-12-22 09:03:09,404 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 09:03:09,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14177 states. [2020-12-22 09:03:10,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14177 to 7167. [2020-12-22 09:03:10,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2020-12-22 09:03:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10053 transitions. [2020-12-22 09:03:10,025 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10053 transitions. Word has length 153 [2020-12-22 09:03:10,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:10,025 INFO L481 AbstractCegarLoop]: Abstraction has 7167 states and 10053 transitions. [2020-12-22 09:03:10,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:10,026 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10053 transitions. [2020-12-22 09:03:10,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 09:03:10,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:10,037 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] [2020-12-22 09:03:10,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:03:10,037 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 09:03:10,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:10,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1459255993, now seen corresponding path program 1 times [2020-12-22 09:03:10,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:10,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211305162] [2020-12-22 09:03:10,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:10,262 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 09:03:10,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211305162] [2020-12-22 09:03:10,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:10,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:03:10,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989430511] [2020-12-22 09:03:10,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:03:10,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:10,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:03:10,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:03:10,265 INFO L87 Difference]: Start difference. First operand 7167 states and 10053 transitions. Second operand 5 states. [2020-12-22 09:03:11,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:11,176 INFO L93 Difference]: Finished difference Result 20866 states and 29140 transitions. [2020-12-22 09:03:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:11,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-12-22 09:03:11,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:11,204 INFO L225 Difference]: With dead ends: 20866 [2020-12-22 09:03:11,204 INFO L226 Difference]: Without dead ends: 13816 [2020-12-22 09:03:11,216 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 09:03:11,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13816 states. [2020-12-22 09:03:12,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13816 to 13786. [2020-12-22 09:03:12,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13786 states. [2020-12-22 09:03:12,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13786 states to 13786 states and 19048 transitions. [2020-12-22 09:03:12,354 INFO L78 Accepts]: Start accepts. Automaton has 13786 states and 19048 transitions. Word has length 154 [2020-12-22 09:03:12,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:12,354 INFO L481 AbstractCegarLoop]: Abstraction has 13786 states and 19048 transitions. [2020-12-22 09:03:12,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:03:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 13786 states and 19048 transitions. [2020-12-22 09:03:12,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 09:03:12,384 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:12,384 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] [2020-12-22 09:03:12,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:03:12,385 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 09:03:12,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:12,386 INFO L82 PathProgramCache]: Analyzing trace with hash 2098194761, now seen corresponding path program 1 times [2020-12-22 09:03:12,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:12,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103900069] [2020-12-22 09:03:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:12,601 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 09:03:12,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103900069] [2020-12-22 09:03:12,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:12,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:03:12,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134656959] [2020-12-22 09:03:12,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:03:12,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:12,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:03:12,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:03:12,606 INFO L87 Difference]: Start difference. First operand 13786 states and 19048 transitions. Second operand 4 states. [2020-12-22 09:03:13,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:13,408 INFO L93 Difference]: Finished difference Result 24262 states and 33508 transitions. [2020-12-22 09:03:13,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:13,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-12-22 09:03:13,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:13,429 INFO L225 Difference]: With dead ends: 24262 [2020-12-22 09:03:13,430 INFO L226 Difference]: Without dead ends: 10567 [2020-12-22 09:03:13,446 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 09:03:13,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10567 states. [2020-12-22 09:03:14,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10567 to 10567. [2020-12-22 09:03:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10567 states. [2020-12-22 09:03:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10567 states to 10567 states and 14577 transitions. [2020-12-22 09:03:14,222 INFO L78 Accepts]: Start accepts. Automaton has 10567 states and 14577 transitions. Word has length 154 [2020-12-22 09:03:14,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:14,226 INFO L481 AbstractCegarLoop]: Abstraction has 10567 states and 14577 transitions. [2020-12-22 09:03:14,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:03:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 10567 states and 14577 transitions. [2020-12-22 09:03:14,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 09:03:14,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:14,241 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] [2020-12-22 09:03:14,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:03:14,242 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 09:03:14,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:14,243 INFO L82 PathProgramCache]: Analyzing trace with hash 2135177219, now seen corresponding path program 1 times [2020-12-22 09:03:14,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:14,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481142754] [2020-12-22 09:03:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:14,321 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 09:03:14,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481142754] [2020-12-22 09:03:14,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:14,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:03:14,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811444024] [2020-12-22 09:03:14,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:03:14,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:14,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:03:14,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:14,324 INFO L87 Difference]: Start difference. First operand 10567 states and 14577 transitions. Second operand 3 states. [2020-12-22 09:03:15,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:15,264 INFO L93 Difference]: Finished difference Result 24469 states and 34596 transitions. [2020-12-22 09:03:15,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:03:15,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2020-12-22 09:03:15,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:15,297 INFO L225 Difference]: With dead ends: 24469 [2020-12-22 09:03:15,297 INFO L226 Difference]: Without dead ends: 15072 [2020-12-22 09:03:15,310 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 09:03:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15072 states. [2020-12-22 09:03:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15072 to 13229. [2020-12-22 09:03:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13229 states. [2020-12-22 09:03:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13229 states to 13229 states and 18821 transitions. [2020-12-22 09:03:16,133 INFO L78 Accepts]: Start accepts. Automaton has 13229 states and 18821 transitions. Word has length 156 [2020-12-22 09:03:16,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:16,134 INFO L481 AbstractCegarLoop]: Abstraction has 13229 states and 18821 transitions. [2020-12-22 09:03:16,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:16,134 INFO L276 IsEmpty]: Start isEmpty. Operand 13229 states and 18821 transitions. [2020-12-22 09:03:16,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 09:03:16,149 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:16,149 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] [2020-12-22 09:03:16,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:03:16,150 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 09:03:16,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:16,150 INFO L82 PathProgramCache]: Analyzing trace with hash 787037030, now seen corresponding path program 1 times [2020-12-22 09:03:16,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:16,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464011013] [2020-12-22 09:03:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:16,255 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 09:03:16,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464011013] [2020-12-22 09:03:16,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:16,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:03:16,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389064526] [2020-12-22 09:03:16,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:03:16,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:16,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:03:16,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:16,258 INFO L87 Difference]: Start difference. First operand 13229 states and 18821 transitions. Second operand 3 states. [2020-12-22 09:03:17,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:17,639 INFO L93 Difference]: Finished difference Result 28929 states and 42160 transitions. [2020-12-22 09:03:17,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:03:17,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2020-12-22 09:03:17,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:17,669 INFO L225 Difference]: With dead ends: 28929 [2020-12-22 09:03:17,670 INFO L226 Difference]: Without dead ends: 18979 [2020-12-22 09:03:17,682 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 09:03:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18979 states. [2020-12-22 09:03:18,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18979 to 17341. [2020-12-22 09:03:18,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17341 states. [2020-12-22 09:03:18,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17341 states to 17341 states and 25303 transitions. [2020-12-22 09:03:18,761 INFO L78 Accepts]: Start accepts. Automaton has 17341 states and 25303 transitions. Word has length 158 [2020-12-22 09:03:18,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:18,762 INFO L481 AbstractCegarLoop]: Abstraction has 17341 states and 25303 transitions. [2020-12-22 09:03:18,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:18,762 INFO L276 IsEmpty]: Start isEmpty. Operand 17341 states and 25303 transitions. [2020-12-22 09:03:18,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 09:03:18,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:18,777 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] [2020-12-22 09:03:18,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:03:18,777 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 09:03:18,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:18,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1606523445, now seen corresponding path program 1 times [2020-12-22 09:03:18,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:18,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055052575] [2020-12-22 09:03:18,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:18,970 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 09:03:18,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055052575] [2020-12-22 09:03:18,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:18,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:03:18,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480722605] [2020-12-22 09:03:18,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:03:18,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:18,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:03:18,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:03:18,973 INFO L87 Difference]: Start difference. First operand 17341 states and 25303 transitions. Second operand 4 states. [2020-12-22 09:03:20,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:20,682 INFO L93 Difference]: Finished difference Result 45048 states and 65700 transitions. [2020-12-22 09:03:20,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:20,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-12-22 09:03:20,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:20,730 INFO L225 Difference]: With dead ends: 45048 [2020-12-22 09:03:20,730 INFO L226 Difference]: Without dead ends: 28052 [2020-12-22 09:03:20,757 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 09:03:20,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28052 states. [2020-12-22 09:03:22,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28052 to 28028. [2020-12-22 09:03:22,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28028 states. [2020-12-22 09:03:22,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28028 states to 28028 states and 40326 transitions. [2020-12-22 09:03:22,525 INFO L78 Accepts]: Start accepts. Automaton has 28028 states and 40326 transitions. Word has length 159 [2020-12-22 09:03:22,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:22,526 INFO L481 AbstractCegarLoop]: Abstraction has 28028 states and 40326 transitions. [2020-12-22 09:03:22,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:03:22,526 INFO L276 IsEmpty]: Start isEmpty. Operand 28028 states and 40326 transitions. [2020-12-22 09:03:22,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 09:03:22,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:22,541 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 09:03:22,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:03:22,542 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 09:03:22,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:22,542 INFO L82 PathProgramCache]: Analyzing trace with hash 883442860, now seen corresponding path program 1 times [2020-12-22 09:03:22,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:22,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155921106] [2020-12-22 09:03:22,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:22,912 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 09:03:22,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155921106] [2020-12-22 09:03:22,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:22,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:03:22,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781996852] [2020-12-22 09:03:22,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:03:22,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:22,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:03:22,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:03:22,915 INFO L87 Difference]: Start difference. First operand 28028 states and 40326 transitions. Second operand 4 states. [2020-12-22 09:03:24,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:24,435 INFO L93 Difference]: Finished difference Result 44477 states and 64087 transitions. [2020-12-22 09:03:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:24,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-12-22 09:03:24,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:24,466 INFO L225 Difference]: With dead ends: 44477 [2020-12-22 09:03:24,466 INFO L226 Difference]: Without dead ends: 22873 [2020-12-22 09:03:24,490 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 09:03:24,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22873 states. [2020-12-22 09:03:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22873 to 22873. [2020-12-22 09:03:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22873 states. [2020-12-22 09:03:25,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22873 states to 22873 states and 32842 transitions. [2020-12-22 09:03:25,928 INFO L78 Accepts]: Start accepts. Automaton has 22873 states and 32842 transitions. Word has length 161 [2020-12-22 09:03:25,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:25,928 INFO L481 AbstractCegarLoop]: Abstraction has 22873 states and 32842 transitions. [2020-12-22 09:03:25,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:03:25,928 INFO L276 IsEmpty]: Start isEmpty. Operand 22873 states and 32842 transitions. [2020-12-22 09:03:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 09:03:25,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:25,940 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] [2020-12-22 09:03:25,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:03:25,940 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 09:03:25,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:25,941 INFO L82 PathProgramCache]: Analyzing trace with hash -424216235, now seen corresponding path program 1 times [2020-12-22 09:03:25,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:25,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972820462] [2020-12-22 09:03:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:26,217 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 09:03:26,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972820462] [2020-12-22 09:03:26,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:26,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:03:26,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804747280] [2020-12-22 09:03:26,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:03:26,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:26,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:03:26,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:26,222 INFO L87 Difference]: Start difference. First operand 22873 states and 32842 transitions. Second operand 3 states. [2020-12-22 09:03:28,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:28,100 INFO L93 Difference]: Finished difference Result 52067 states and 76255 transitions. [2020-12-22 09:03:28,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:03:28,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-12-22 09:03:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:28,136 INFO L225 Difference]: With dead ends: 52067 [2020-12-22 09:03:28,137 INFO L226 Difference]: Without dead ends: 34271 [2020-12-22 09:03:28,152 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 09:03:28,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34271 states. [2020-12-22 09:03:30,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34271 to 31753. [2020-12-22 09:03:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31753 states. [2020-12-22 09:03:30,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31753 states to 31753 states and 46662 transitions. [2020-12-22 09:03:30,498 INFO L78 Accepts]: Start accepts. Automaton has 31753 states and 46662 transitions. Word has length 165 [2020-12-22 09:03:30,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:30,498 INFO L481 AbstractCegarLoop]: Abstraction has 31753 states and 46662 transitions. [2020-12-22 09:03:30,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:30,498 INFO L276 IsEmpty]: Start isEmpty. Operand 31753 states and 46662 transitions. [2020-12-22 09:03:30,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-12-22 09:03:30,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:30,506 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 09:03:30,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:03:30,507 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 09:03:30,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:30,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1525395194, now seen corresponding path program 1 times [2020-12-22 09:03:30,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:30,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025340708] [2020-12-22 09:03:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:30,911 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 09:03:30,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025340708] [2020-12-22 09:03:30,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:30,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 09:03:30,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371175230] [2020-12-22 09:03:30,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 09:03:30,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:30,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 09:03:30,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-22 09:03:30,914 INFO L87 Difference]: Start difference. First operand 31753 states and 46662 transitions. Second operand 10 states. [2020-12-22 09:03:41,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:41,212 INFO L93 Difference]: Finished difference Result 154377 states and 231123 transitions. [2020-12-22 09:03:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 09:03:41,213 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-12-22 09:03:41,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:41,429 INFO L225 Difference]: With dead ends: 154377 [2020-12-22 09:03:41,430 INFO L226 Difference]: Without dead ends: 126451 [2020-12-22 09:03:41,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2020-12-22 09:03:41,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126451 states. [2020-12-22 09:03:48,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126451 to 85305. [2020-12-22 09:03:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85305 states. [2020-12-22 09:03:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85305 states to 85305 states and 126235 transitions. [2020-12-22 09:03:48,819 INFO L78 Accepts]: Start accepts. Automaton has 85305 states and 126235 transitions. Word has length 166 [2020-12-22 09:03:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:48,819 INFO L481 AbstractCegarLoop]: Abstraction has 85305 states and 126235 transitions. [2020-12-22 09:03:48,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 09:03:48,820 INFO L276 IsEmpty]: Start isEmpty. Operand 85305 states and 126235 transitions. [2020-12-22 09:03:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-12-22 09:03:48,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:48,833 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 09:03:48,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 09:03:48,834 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 09:03:48,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:48,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1116845734, now seen corresponding path program 1 times [2020-12-22 09:03:48,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:48,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603475312] [2020-12-22 09:03:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:49,004 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 09:03:49,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603475312] [2020-12-22 09:03:49,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:49,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:03:49,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672415246] [2020-12-22 09:03:49,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:03:49,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:49,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:03:49,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:03:49,007 INFO L87 Difference]: Start difference. First operand 85305 states and 126235 transitions. Second operand 4 states. [2020-12-22 09:03:57,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:57,700 INFO L93 Difference]: Finished difference Result 172268 states and 261338 transitions. [2020-12-22 09:03:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:57,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-12-22 09:03:57,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:57,884 INFO L225 Difference]: With dead ends: 172268 [2020-12-22 09:03:57,884 INFO L226 Difference]: Without dead ends: 106417 [2020-12-22 09:03:57,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:03:58,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106417 states. [2020-12-22 09:04:06,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106417 to 106415. [2020-12-22 09:04:06,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106415 states. [2020-12-22 09:04:06,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106415 states to 106415 states and 158570 transitions. [2020-12-22 09:04:06,543 INFO L78 Accepts]: Start accepts. Automaton has 106415 states and 158570 transitions. Word has length 166 [2020-12-22 09:04:06,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:06,543 INFO L481 AbstractCegarLoop]: Abstraction has 106415 states and 158570 transitions. [2020-12-22 09:04:06,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:06,544 INFO L276 IsEmpty]: Start isEmpty. Operand 106415 states and 158570 transitions. [2020-12-22 09:04:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-12-22 09:04:06,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:06,563 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 09:04:06,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 09:04:06,563 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 09:04:06,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:06,564 INFO L82 PathProgramCache]: Analyzing trace with hash 575303427, now seen corresponding path program 1 times [2020-12-22 09:04:06,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:06,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127462196] [2020-12-22 09:04:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:06,965 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 09:04:06,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127462196] [2020-12-22 09:04:06,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:06,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:06,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053512520] [2020-12-22 09:04:06,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:06,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:06,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:06,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:06,969 INFO L87 Difference]: Start difference. First operand 106415 states and 158570 transitions. Second operand 4 states. [2020-12-22 09:04:13,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:13,684 INFO L93 Difference]: Finished difference Result 192338 states and 286871 transitions. [2020-12-22 09:04:13,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:13,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-12-22 09:04:13,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:13,936 INFO L225 Difference]: With dead ends: 192338 [2020-12-22 09:04:13,936 INFO L226 Difference]: Without dead ends: 86331 [2020-12-22 09:04:13,997 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 09:04:14,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86331 states. [2020-12-22 09:04:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86331 to 86331. [2020-12-22 09:04:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86331 states. [2020-12-22 09:04:21,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86331 states to 86331 states and 128749 transitions. [2020-12-22 09:04:21,019 INFO L78 Accepts]: Start accepts. Automaton has 86331 states and 128749 transitions. Word has length 166 [2020-12-22 09:04:21,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:21,019 INFO L481 AbstractCegarLoop]: Abstraction has 86331 states and 128749 transitions. [2020-12-22 09:04:21,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:21,020 INFO L276 IsEmpty]: Start isEmpty. Operand 86331 states and 128749 transitions. [2020-12-22 09:04:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-12-22 09:04:21,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:21,037 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:04:21,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 09:04:21,038 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 09:04:21,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:21,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1400730614, now seen corresponding path program 1 times [2020-12-22 09:04:21,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:21,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151523985] [2020-12-22 09:04:21,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:21,347 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 09:04:21,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151523985] [2020-12-22 09:04:21,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:21,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 09:04:21,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198632318] [2020-12-22 09:04:21,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 09:04:21,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:21,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 09:04:21,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-12-22 09:04:21,350 INFO L87 Difference]: Start difference. First operand 86331 states and 128749 transitions. Second operand 13 states. [2020-12-22 09:05:01,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:01,550 INFO L93 Difference]: Finished difference Result 431166 states and 637111 transitions. [2020-12-22 09:05:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 09:05:01,551 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 173 [2020-12-22 09:05:01,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:02,484 INFO L225 Difference]: With dead ends: 431166 [2020-12-22 09:05:02,484 INFO L226 Difference]: Without dead ends: 389574 [2020-12-22 09:05:02,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=371, Invalid=819, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 09:05:02,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389574 states.