/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:03:30,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:03:30,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:03:30,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:03:30,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:03:30,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:03:30,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:03:30,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:03:30,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:03:30,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:03:30,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:03:30,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:03:30,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:03:30,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:03:30,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:03:30,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:03:30,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:03:30,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:03:30,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:03:30,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:03:30,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:03:30,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:03:30,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:03:30,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:03:31,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:03:31,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:03:31,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:03:31,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:03:31,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:03:31,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:03:31,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:03:31,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:03:31,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:03:31,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:03:31,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:03:31,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:03:31,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:03:31,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:03:31,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:03:31,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:03:31,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:03:31,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:03:31,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:03:31,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:03:31,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:03:31,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:03:31,060 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:03:31,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:03:31,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:03:31,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:03:31,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:03:31,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:03:31,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:03:31,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:03:31,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:03:31,063 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:03:31,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:03:31,064 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:03:31,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:03:31,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:03:31,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:03:31,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:03:31,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:03:31,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:03:31,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:03:31,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:03:31,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:03:31,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:03:31,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:03:31,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:03:31,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:03:31,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 18:03:31,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:03:31,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:03:31,394 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:03:31,395 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:03:31,396 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:03:31,397 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 18:03:31,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c70cb265a/6b2c1ec5c35443eb85222fd3ce155cff/FLAG9112c9d25 [2020-08-18 18:03:32,082 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:03:32,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 18:03:32,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c70cb265a/6b2c1ec5c35443eb85222fd3ce155cff/FLAG9112c9d25 [2020-08-18 18:03:32,310 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c70cb265a/6b2c1ec5c35443eb85222fd3ce155cff [2020-08-18 18:03:32,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:03:32,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:03:32,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:03:32,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:03:32,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:03:32,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:03:32" (1/1) ... [2020-08-18 18:03:32,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593f5466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:03:32, skipping insertion in model container [2020-08-18 18:03:32,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:03:32" (1/1) ... [2020-08-18 18:03:32,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:03:32,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:03:33,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:03:33,066 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:03:33,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:03:33,597 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:03:33,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:03:33 WrapperNode [2020-08-18 18:03:33,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:03:33,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:03:33,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:03:33,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:03:33,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:03:33" (1/1) ... [2020-08-18 18:03:33,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:03:33" (1/1) ... [2020-08-18 18:03:33,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:03:33" (1/1) ... [2020-08-18 18:03:33,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:03:33" (1/1) ... [2020-08-18 18:03:33,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:03:33" (1/1) ... [2020-08-18 18:03:33,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:03:33" (1/1) ... [2020-08-18 18:03:33,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:03:33" (1/1) ... [2020-08-18 18:03:33,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:03:33,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:03:33,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:03:33,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:03:33,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:03:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 18:03:33,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:03:33,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:03:33,883 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 18:03:33,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:03:33,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:03:33,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 18:03:33,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 18:03:33,884 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 18:03:33,884 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 18:03:33,884 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 18:03:33,884 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 18:03:33,884 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 18:03:33,885 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-18 18:03:33,885 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-18 18:03:33,885 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-18 18:03:33,885 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 18:03:33,886 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 18:03:33,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:03:33,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:03:33,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:03:35,673 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:03:35,674 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 18:03:35,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:03:35 BoogieIcfgContainer [2020-08-18 18:03:35,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:03:35,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:03:35,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:03:35,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:03:35,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:03:32" (1/3) ... [2020-08-18 18:03:35,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3159fab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:03:35, skipping insertion in model container [2020-08-18 18:03:35,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:03:33" (2/3) ... [2020-08-18 18:03:35,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3159fab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:03:35, skipping insertion in model container [2020-08-18 18:03:35,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:03:35" (3/3) ... [2020-08-18 18:03:35,691 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 18:03:35,702 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:03:35,711 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-18 18:03:35,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-18 18:03:35,756 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:03:35,756 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:03:35,756 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:03:35,756 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:03:35,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:03:35,757 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:03:35,757 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:03:35,757 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:03:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states. [2020-08-18 18:03:35,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 18:03:35,806 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:03:35,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:03:35,808 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:03:35,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:03:35,813 INFO L82 PathProgramCache]: Analyzing trace with hash 604537660, now seen corresponding path program 1 times [2020-08-18 18:03:35,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:03:35,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139714193] [2020-08-18 18:03:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:03:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:03:36,902 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 18:03:36,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:03:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:03:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:03:37,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139714193] [2020-08-18 18:03:37,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:03:37,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:03:37,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639276262] [2020-08-18 18:03:37,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:03:37,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:03:37,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:03:37,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:03:37,063 INFO L87 Difference]: Start difference. First operand 412 states. Second operand 4 states. [2020-08-18 18:03:37,396 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-18 18:03:40,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:03:40,088 INFO L93 Difference]: Finished difference Result 754 states and 1320 transitions. [2020-08-18 18:03:40,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:03:40,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-18 18:03:40,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:03:40,112 INFO L225 Difference]: With dead ends: 754 [2020-08-18 18:03:40,112 INFO L226 Difference]: Without dead ends: 593 [2020-08-18 18:03:40,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:03:40,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-08-18 18:03:40,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-08-18 18:03:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-08-18 18:03:40,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 870 transitions. [2020-08-18 18:03:40,211 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 870 transitions. Word has length 146 [2020-08-18 18:03:40,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:03:40,212 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 870 transitions. [2020-08-18 18:03:40,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:03:40,213 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 870 transitions. [2020-08-18 18:03:40,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 18:03:40,218 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:03:40,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:03:40,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:03:40,219 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:03:40,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:03:40,219 INFO L82 PathProgramCache]: Analyzing trace with hash 694944860, now seen corresponding path program 1 times [2020-08-18 18:03:40,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:03:40,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079333186] [2020-08-18 18:03:40,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:03:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:03:40,700 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 18:03:40,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:03:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:03:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:03:40,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079333186] [2020-08-18 18:03:40,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:03:40,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:03:40,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220025444] [2020-08-18 18:03:40,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:03:40,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:03:40,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:03:40,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:03:40,782 INFO L87 Difference]: Start difference. First operand 591 states and 870 transitions. Second operand 4 states. [2020-08-18 18:03:41,025 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-18 18:03:43,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:03:43,286 INFO L93 Difference]: Finished difference Result 1190 states and 1805 transitions. [2020-08-18 18:03:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:03:43,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-18 18:03:43,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:03:43,296 INFO L225 Difference]: With dead ends: 1190 [2020-08-18 18:03:43,297 INFO L226 Difference]: Without dead ends: 961 [2020-08-18 18:03:43,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:03:43,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-08-18 18:03:43,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2020-08-18 18:03:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-08-18 18:03:43,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1434 transitions. [2020-08-18 18:03:43,388 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1434 transitions. Word has length 146 [2020-08-18 18:03:43,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:03:43,389 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1434 transitions. [2020-08-18 18:03:43,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:03:43,390 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1434 transitions. [2020-08-18 18:03:43,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 18:03:43,397 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:03:43,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:03:43,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:03:43,402 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:03:43,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:03:43,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1369993092, now seen corresponding path program 1 times [2020-08-18 18:03:43,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:03:43,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587514579] [2020-08-18 18:03:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:03:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:03:43,791 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 18:03:43,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:03:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:03:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:03:43,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587514579] [2020-08-18 18:03:43,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:03:43,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:03:43,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501165819] [2020-08-18 18:03:43,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:03:43,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:03:43,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:03:43,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:03:43,862 INFO L87 Difference]: Start difference. First operand 959 states and 1434 transitions. Second operand 4 states. [2020-08-18 18:03:44,159 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-18 18:03:46,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:03:46,455 INFO L93 Difference]: Finished difference Result 2090 states and 3210 transitions. [2020-08-18 18:03:46,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:03:46,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-18 18:03:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:03:46,472 INFO L225 Difference]: With dead ends: 2090 [2020-08-18 18:03:46,472 INFO L226 Difference]: Without dead ends: 1701 [2020-08-18 18:03:46,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:03:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-08-18 18:03:46,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2020-08-18 18:03:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-08-18 18:03:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2566 transitions. [2020-08-18 18:03:46,571 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2566 transitions. Word has length 146 [2020-08-18 18:03:46,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:03:46,572 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2566 transitions. [2020-08-18 18:03:46,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:03:46,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2566 transitions. [2020-08-18 18:03:46,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 18:03:46,578 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:03:46,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:03:46,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:03:46,580 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:03:46,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:03:46,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1370331716, now seen corresponding path program 1 times [2020-08-18 18:03:46,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:03:46,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446998464] [2020-08-18 18:03:46,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:03:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:03:47,094 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 18:03:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:03:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:03:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:03:47,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446998464] [2020-08-18 18:03:47,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:03:47,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:03:47,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238182665] [2020-08-18 18:03:47,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:03:47,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:03:47,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:03:47,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:03:47,195 INFO L87 Difference]: Start difference. First operand 1699 states and 2566 transitions. Second operand 5 states. [2020-08-18 18:03:50,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:03:50,615 INFO L93 Difference]: Finished difference Result 4967 states and 7485 transitions. [2020-08-18 18:03:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:03:50,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-18 18:03:50,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:03:50,639 INFO L225 Difference]: With dead ends: 4967 [2020-08-18 18:03:50,640 INFO L226 Difference]: Without dead ends: 3281 [2020-08-18 18:03:50,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:03:50,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2020-08-18 18:03:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3235. [2020-08-18 18:03:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2020-08-18 18:03:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4851 transitions. [2020-08-18 18:03:50,775 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4851 transitions. Word has length 146 [2020-08-18 18:03:50,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:03:50,775 INFO L479 AbstractCegarLoop]: Abstraction has 3235 states and 4851 transitions. [2020-08-18 18:03:50,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:03:50,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4851 transitions. [2020-08-18 18:03:50,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 18:03:50,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:03:50,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:03:50,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:03:50,784 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:03:50,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:03:50,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1648495204, now seen corresponding path program 1 times [2020-08-18 18:03:50,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:03:50,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524052898] [2020-08-18 18:03:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:03:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:03:51,101 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 18:03:51,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:03:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:03:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:03:51,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524052898] [2020-08-18 18:03:51,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:03:51,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:03:51,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032041763] [2020-08-18 18:03:51,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:03:51,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:03:51,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:03:51,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:03:51,157 INFO L87 Difference]: Start difference. First operand 3235 states and 4851 transitions. Second operand 4 states. [2020-08-18 18:03:53,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:03:53,608 INFO L93 Difference]: Finished difference Result 9659 states and 14483 transitions. [2020-08-18 18:03:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:03:53,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-18 18:03:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:03:53,640 INFO L225 Difference]: With dead ends: 9659 [2020-08-18 18:03:53,640 INFO L226 Difference]: Without dead ends: 6456 [2020-08-18 18:03:53,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:03:53,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2020-08-18 18:03:53,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 3237. [2020-08-18 18:03:53,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-08-18 18:03:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4853 transitions. [2020-08-18 18:03:53,821 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4853 transitions. Word has length 147 [2020-08-18 18:03:53,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:03:53,821 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 4853 transitions. [2020-08-18 18:03:53,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:03:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4853 transitions. [2020-08-18 18:03:53,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 18:03:53,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:03:53,827 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] [2020-08-18 18:03:53,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:03:53,828 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:03:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:03:53,830 INFO L82 PathProgramCache]: Analyzing trace with hash 921116989, now seen corresponding path program 1 times [2020-08-18 18:03:53,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:03:53,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975272160] [2020-08-18 18:03:53,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:03:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:03:54,339 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 18:03:54,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:03:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:03:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:03:54,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975272160] [2020-08-18 18:03:54,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:03:54,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:03:54,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080500379] [2020-08-18 18:03:54,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:03:54,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:03:54,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:03:54,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:03:54,433 INFO L87 Difference]: Start difference. First operand 3237 states and 4853 transitions. Second operand 5 states. [2020-08-18 18:03:57,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:03:57,999 INFO L93 Difference]: Finished difference Result 9441 states and 14115 transitions. [2020-08-18 18:03:58,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:03:58,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-18 18:03:58,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:03:58,025 INFO L225 Difference]: With dead ends: 9441 [2020-08-18 18:03:58,025 INFO L226 Difference]: Without dead ends: 6238 [2020-08-18 18:03:58,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:03:58,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-08-18 18:03:58,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6192. [2020-08-18 18:03:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6192 states. [2020-08-18 18:03:58,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9193 transitions. [2020-08-18 18:03:58,307 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9193 transitions. Word has length 148 [2020-08-18 18:03:58,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:03:58,307 INFO L479 AbstractCegarLoop]: Abstraction has 6192 states and 9193 transitions. [2020-08-18 18:03:58,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:03:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9193 transitions. [2020-08-18 18:03:58,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 18:03:58,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:03:58,319 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] [2020-08-18 18:03:58,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:03:58,320 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:03:58,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:03:58,320 INFO L82 PathProgramCache]: Analyzing trace with hash 239618117, now seen corresponding path program 1 times [2020-08-18 18:03:58,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:03:58,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318232199] [2020-08-18 18:03:58,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:03:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:03:58,608 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 18:03:58,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:03:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:03:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:03:58,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318232199] [2020-08-18 18:03:58,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:03:58,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:03:58,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415920523] [2020-08-18 18:03:58,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:03:58,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:03:58,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:03:58,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:03:58,649 INFO L87 Difference]: Start difference. First operand 6192 states and 9193 transitions. Second operand 4 states. [2020-08-18 18:04:02,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:04:02,029 INFO L93 Difference]: Finished difference Result 18492 states and 27451 transitions. [2020-08-18 18:04:02,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:04:02,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-08-18 18:04:02,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:04:02,075 INFO L225 Difference]: With dead ends: 18492 [2020-08-18 18:04:02,075 INFO L226 Difference]: Without dead ends: 12348 [2020-08-18 18:04:02,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:04:02,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2020-08-18 18:04:02,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 6196. [2020-08-18 18:04:02,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6196 states. [2020-08-18 18:04:02,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 9197 transitions. [2020-08-18 18:04:02,465 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 9197 transitions. Word has length 149 [2020-08-18 18:04:02,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:04:02,466 INFO L479 AbstractCegarLoop]: Abstraction has 6196 states and 9197 transitions. [2020-08-18 18:04:02,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:04:02,466 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 9197 transitions. [2020-08-18 18:04:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 18:04:02,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:04:02,476 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] [2020-08-18 18:04:02,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:04:02,476 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:04:02,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:04:02,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1772203169, now seen corresponding path program 1 times [2020-08-18 18:04:02,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:04:02,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577411326] [2020-08-18 18:04:02,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:04:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:04:02,890 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 18:04:02,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:04:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:04:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:04:02,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577411326] [2020-08-18 18:04:02,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:04:02,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:04:02,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214694828] [2020-08-18 18:04:02,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:04:02,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:04:02,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:04:02,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:04:02,978 INFO L87 Difference]: Start difference. First operand 6196 states and 9197 transitions. Second operand 4 states. [2020-08-18 18:04:06,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:04:06,267 INFO L93 Difference]: Finished difference Result 16495 states and 24448 transitions. [2020-08-18 18:04:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:04:06,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-08-18 18:04:06,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:04:06,296 INFO L225 Difference]: With dead ends: 16495 [2020-08-18 18:04:06,297 INFO L226 Difference]: Without dead ends: 10615 [2020-08-18 18:04:06,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:04:06,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2020-08-18 18:04:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10569. [2020-08-18 18:04:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-18 18:04:06,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15484 transitions. [2020-08-18 18:04:06,924 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15484 transitions. Word has length 150 [2020-08-18 18:04:06,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:04:06,924 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15484 transitions. [2020-08-18 18:04:06,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:04:06,925 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15484 transitions. [2020-08-18 18:04:06,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 18:04:06,942 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:04:06,942 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] [2020-08-18 18:04:06,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:04:06,943 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:04:06,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:04:06,943 INFO L82 PathProgramCache]: Analyzing trace with hash 251552574, now seen corresponding path program 1 times [2020-08-18 18:04:06,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:04:06,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554534020] [2020-08-18 18:04:06,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:04:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:04:07,293 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 18:04:07,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:04:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:04:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:04:07,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554534020] [2020-08-18 18:04:07,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:04:07,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:04:07,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715168202] [2020-08-18 18:04:07,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:04:07,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:04:07,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:04:07,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:04:07,332 INFO L87 Difference]: Start difference. First operand 10569 states and 15484 transitions. Second operand 5 states. [2020-08-18 18:04:09,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:04:09,712 INFO L93 Difference]: Finished difference Result 21564 states and 31467 transitions. [2020-08-18 18:04:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:04:09,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-18 18:04:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:04:09,734 INFO L225 Difference]: With dead ends: 21564 [2020-08-18 18:04:09,734 INFO L226 Difference]: Without dead ends: 10851 [2020-08-18 18:04:09,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:04:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-18 18:04:10,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10805. [2020-08-18 18:04:10,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10805 states. [2020-08-18 18:04:10,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 15660 transitions. [2020-08-18 18:04:10,187 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 15660 transitions. Word has length 150 [2020-08-18 18:04:10,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:04:10,187 INFO L479 AbstractCegarLoop]: Abstraction has 10805 states and 15660 transitions. [2020-08-18 18:04:10,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:04:10,188 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 15660 transitions. [2020-08-18 18:04:10,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 18:04:10,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:04:10,203 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] [2020-08-18 18:04:10,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:04:10,203 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:04:10,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:04:10,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1535594178, now seen corresponding path program 1 times [2020-08-18 18:04:10,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:04:10,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423804082] [2020-08-18 18:04:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:04:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:04:10,586 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 18:04:10,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:04:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:04:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:04:10,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423804082] [2020-08-18 18:04:10,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:04:10,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:04:10,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996393136] [2020-08-18 18:04:10,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:04:10,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:04:10,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:04:10,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:04:10,662 INFO L87 Difference]: Start difference. First operand 10805 states and 15660 transitions. Second operand 5 states. [2020-08-18 18:04:13,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:04:13,878 INFO L93 Difference]: Finished difference Result 15230 states and 22013 transitions. [2020-08-18 18:04:13,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:04:13,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-18 18:04:13,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:04:13,894 INFO L225 Difference]: With dead ends: 15230 [2020-08-18 18:04:13,894 INFO L226 Difference]: Without dead ends: 10851 [2020-08-18 18:04:13,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:04:13,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-18 18:04:14,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10569. [2020-08-18 18:04:14,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-18 18:04:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15362 transitions. [2020-08-18 18:04:14,898 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15362 transitions. Word has length 150 [2020-08-18 18:04:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:04:14,898 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15362 transitions. [2020-08-18 18:04:14,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:04:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15362 transitions. [2020-08-18 18:04:14,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 18:04:14,910 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:04:14,910 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, 1, 1, 1] [2020-08-18 18:04:14,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:04:14,911 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:04:14,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:04:14,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1232731994, now seen corresponding path program 1 times [2020-08-18 18:04:14,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:04:14,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792636704] [2020-08-18 18:04:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:04:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:04:15,194 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 18:04:15,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:04:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:04:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:04:15,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792636704] [2020-08-18 18:04:15,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:04:15,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:04:15,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075071946] [2020-08-18 18:04:15,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:04:15,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:04:15,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:04:15,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:04:15,232 INFO L87 Difference]: Start difference. First operand 10569 states and 15362 transitions. Second operand 4 states. [2020-08-18 18:04:18,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:04:18,829 INFO L93 Difference]: Finished difference Result 25409 states and 36872 transitions. [2020-08-18 18:04:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:04:18,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-18 18:04:18,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:04:18,850 INFO L225 Difference]: With dead ends: 25409 [2020-08-18 18:04:18,851 INFO L226 Difference]: Without dead ends: 21030 [2020-08-18 18:04:18,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:04:18,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-08-18 18:04:19,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 10577. [2020-08-18 18:04:19,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10577 states. [2020-08-18 18:04:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10577 states to 10577 states and 15370 transitions. [2020-08-18 18:04:19,305 INFO L78 Accepts]: Start accepts. Automaton has 10577 states and 15370 transitions. Word has length 151 [2020-08-18 18:04:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:04:19,306 INFO L479 AbstractCegarLoop]: Abstraction has 10577 states and 15370 transitions. [2020-08-18 18:04:19,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:04:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 10577 states and 15370 transitions. [2020-08-18 18:04:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 18:04:19,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:04:19,317 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] [2020-08-18 18:04:19,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:04:19,317 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:04:19,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:04:19,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1234425885, now seen corresponding path program 1 times [2020-08-18 18:04:19,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:04:19,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324861635] [2020-08-18 18:04:19,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:04:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:04:19,648 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 18:04:19,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:04:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:04:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:04:19,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324861635] [2020-08-18 18:04:19,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:04:19,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:04:19,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001703036] [2020-08-18 18:04:19,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:04:19,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:04:19,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:04:19,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:04:19,750 INFO L87 Difference]: Start difference. First operand 10577 states and 15370 transitions. Second operand 5 states. [2020-08-18 18:04:23,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:04:23,011 INFO L93 Difference]: Finished difference Result 30843 states and 44647 transitions. [2020-08-18 18:04:23,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:04:23,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-18 18:04:23,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:04:23,028 INFO L225 Difference]: With dead ends: 30843 [2020-08-18 18:04:23,029 INFO L226 Difference]: Without dead ends: 20313 [2020-08-18 18:04:23,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:04:23,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20313 states. [2020-08-18 18:04:23,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20313 to 20283. [2020-08-18 18:04:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20283 states. [2020-08-18 18:04:23,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20283 states to 20283 states and 29041 transitions. [2020-08-18 18:04:23,787 INFO L78 Accepts]: Start accepts. Automaton has 20283 states and 29041 transitions. Word has length 152 [2020-08-18 18:04:23,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:04:23,787 INFO L479 AbstractCegarLoop]: Abstraction has 20283 states and 29041 transitions. [2020-08-18 18:04:23,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:04:23,787 INFO L276 IsEmpty]: Start isEmpty. Operand 20283 states and 29041 transitions. [2020-08-18 18:04:23,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 18:04:23,803 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:04:23,804 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] [2020-08-18 18:04:23,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 18:04:23,804 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:04:23,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:04:23,804 INFO L82 PathProgramCache]: Analyzing trace with hash -695536157, now seen corresponding path program 1 times [2020-08-18 18:04:23,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:04:23,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387882805] [2020-08-18 18:04:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:04:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:04:24,235 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 18:04:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:04:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:04:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:04:24,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387882805] [2020-08-18 18:04:24,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:04:24,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:04:24,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751140925] [2020-08-18 18:04:24,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:04:24,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:04:24,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:04:24,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:04:24,316 INFO L87 Difference]: Start difference. First operand 20283 states and 29041 transitions. Second operand 5 states.