/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:54:43,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:54:43,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:54:43,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:54:43,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:54:43,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:54:43,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:54:43,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:54:43,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:54:43,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:54:43,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:54:43,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:54:43,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:54:43,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:54:43,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:54:43,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:54:43,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:54:43,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:54:43,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:54:43,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:54:43,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:54:43,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:54:43,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:54:43,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:54:43,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:54:43,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:54:43,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:54:43,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:54:43,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:54:43,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:54:43,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:54:43,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:54:43,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:54:43,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:54:43,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:54:43,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:54:43,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:54:43,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:54:43,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:54:43,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:54:43,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:54:43,842 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 11:54:43,883 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:54:43,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:54:43,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:54:43,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:54:43,885 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:54:43,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:54:43,886 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:54:43,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:54:43,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:54:43,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:54:43,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:54:43,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:54:43,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:54:43,888 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:54:43,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:54:43,889 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:54:43,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:54:43,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:54:43,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:54:43,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:54:43,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:54:43,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:54:43,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:54:43,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:54:43,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:54:43,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:54:43,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:54:43,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:54:43,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:54:43,892 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:54:44,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:54:44,198 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:54:44,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:54:44,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:54:44,204 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:54:44,205 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c [2020-08-18 11:54:44,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b906c3c7b/c6280c1164754b978fe0ca73accd0209/FLAG03ed3e422 [2020-08-18 11:54:44,805 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:54:44,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c [2020-08-18 11:54:44,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b906c3c7b/c6280c1164754b978fe0ca73accd0209/FLAG03ed3e422 [2020-08-18 11:54:45,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b906c3c7b/c6280c1164754b978fe0ca73accd0209 [2020-08-18 11:54:45,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:54:45,122 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:54:45,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:54:45,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:54:45,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:54:45,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:54:45" (1/1) ... [2020-08-18 11:54:45,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e6aecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:45, skipping insertion in model container [2020-08-18 11:54:45,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:54:45" (1/1) ... [2020-08-18 11:54:45,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:54:45,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:54:45,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:54:45,548 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:54:45,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:54:45,819 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:54:45,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:45 WrapperNode [2020-08-18 11:54:45,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:54:45,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:54:45,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:54:45,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:54:45,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:45" (1/1) ... [2020-08-18 11:54:45,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:45" (1/1) ... [2020-08-18 11:54:45,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:45" (1/1) ... [2020-08-18 11:54:45,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:45" (1/1) ... [2020-08-18 11:54:45,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:45" (1/1) ... [2020-08-18 11:54:45,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:45" (1/1) ... [2020-08-18 11:54:45,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:45" (1/1) ... [2020-08-18 11:54:45,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:54:45,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:54:45,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:54:45,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:54:45,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:45" (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 11:54:45,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:54:45,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:54:45,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:54:45,990 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:54:45,991 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:54:45,991 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:54:45,991 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 11:54:45,991 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:54:45,991 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 11:54:45,991 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:54:45,992 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:54:45,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:54:45,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:54:45,993 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:54:45,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:54:45,994 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 11:54:45,994 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:54:45,994 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:54:45,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:54:45,994 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:54:45,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:54:45,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:54:45,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:54:45,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:54:45,995 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:54:45,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:54:45,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 11:54:45,996 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:54:45,996 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:54:45,996 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:54:45,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:54:45,997 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:54:45,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:54:45,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:54:45,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:54:45,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:54:45,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:54:45,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:54:45,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:54:45,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:54:45,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:54:45,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:54:46,000 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:54:46,000 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:54:46,000 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:54:46,000 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 11:54:46,000 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:54:46,000 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:54:46,001 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:54:46,001 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:54:46,001 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:54:46,001 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:54:46,001 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:54:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:54:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:54:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:54:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:54:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 11:54:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:54:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:54:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:54:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 11:54:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:54:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 11:54:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:54:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:54:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:54:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:54:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:54:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:54:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:54:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:54:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:54:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:54:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:54:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:54:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:54:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:54:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:54:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:54:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:54:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:54:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:54:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:54:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:54:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:54:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:54:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:54:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:54:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:54:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:54:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:54:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:54:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:54:47,085 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:54:47,086 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:54:47,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:54:47 BoogieIcfgContainer [2020-08-18 11:54:47,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:54:47,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:54:47,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:54:47,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:54:47,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:54:45" (1/3) ... [2020-08-18 11:54:47,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d07f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:54:47, skipping insertion in model container [2020-08-18 11:54:47,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:45" (2/3) ... [2020-08-18 11:54:47,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d07f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:54:47, skipping insertion in model container [2020-08-18 11:54:47,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:54:47" (3/3) ... [2020-08-18 11:54:47,101 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product46.cil.c [2020-08-18 11:54:47,112 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:54:47,121 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:54:47,132 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:54:47,155 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:54:47,155 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:54:47,155 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:54:47,155 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:54:47,155 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:54:47,156 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:54:47,156 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:54:47,156 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:54:47,180 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-18 11:54:47,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 11:54:47,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:47,192 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] [2020-08-18 11:54:47,193 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:47,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:47,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1417441614, now seen corresponding path program 1 times [2020-08-18 11:54:47,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:47,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958143794] [2020-08-18 11:54:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:47,958 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:47,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:54:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:54:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:48,034 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 11:54:48,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958143794] [2020-08-18 11:54:48,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:48,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 11:54:48,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596444421] [2020-08-18 11:54:48,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 11:54:48,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:48,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 11:54:48,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:54:48,064 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-08-18 11:54:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:49,278 INFO L93 Difference]: Finished difference Result 312 states and 408 transitions. [2020-08-18 11:54:49,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 11:54:49,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 11:54:49,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:49,296 INFO L225 Difference]: With dead ends: 312 [2020-08-18 11:54:49,297 INFO L226 Difference]: Without dead ends: 169 [2020-08-18 11:54:49,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:54:49,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-18 11:54:49,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 134. [2020-08-18 11:54:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-18 11:54:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-18 11:54:49,398 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2020-08-18 11:54:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:49,398 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-18 11:54:49,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 11:54:49,399 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-18 11:54:49,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 11:54:49,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:49,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:49,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:54:49,403 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:49,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:49,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1689810546, now seen corresponding path program 1 times [2020-08-18 11:54:49,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:49,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940833836] [2020-08-18 11:54:49,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:49,791 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:49,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:49,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:49,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:49,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:49,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:49,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:54:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:49,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:54:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:49,872 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 11:54:49,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940833836] [2020-08-18 11:54:49,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:49,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:54:49,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585310461] [2020-08-18 11:54:49,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:54:49,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:49,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:54:49,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:54:49,877 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 4 states. [2020-08-18 11:54:50,358 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:51,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:51,186 INFO L93 Difference]: Finished difference Result 241 states and 295 transitions. [2020-08-18 11:54:51,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:54:51,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 11:54:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:51,190 INFO L225 Difference]: With dead ends: 241 [2020-08-18 11:54:51,190 INFO L226 Difference]: Without dead ends: 153 [2020-08-18 11:54:51,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 11:54:51,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-18 11:54:51,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 125. [2020-08-18 11:54:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 11:54:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-08-18 11:54:51,230 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 47 [2020-08-18 11:54:51,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:51,230 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-08-18 11:54:51,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:54:51,231 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-08-18 11:54:51,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:54:51,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:51,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:51,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:54:51,233 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:51,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:51,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1011180464, now seen corresponding path program 1 times [2020-08-18 11:54:51,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:51,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114339644] [2020-08-18 11:54:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,559 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:51,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:54:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:54:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:51,631 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 11:54:51,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114339644] [2020-08-18 11:54:51,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:51,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:54:51,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984703277] [2020-08-18 11:54:51,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:54:51,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:51,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:54:51,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:54:51,634 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 8 states. [2020-08-18 11:54:52,046 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:52,388 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:52,645 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:52,887 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:54,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:54,149 INFO L93 Difference]: Finished difference Result 254 states and 313 transitions. [2020-08-18 11:54:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:54:54,150 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 11:54:54,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:54,152 INFO L225 Difference]: With dead ends: 254 [2020-08-18 11:54:54,152 INFO L226 Difference]: Without dead ends: 153 [2020-08-18 11:54:54,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:54:54,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-18 11:54:54,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 125. [2020-08-18 11:54:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 11:54:54,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 145 transitions. [2020-08-18 11:54:54,191 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 145 transitions. Word has length 52 [2020-08-18 11:54:54,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:54,191 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 145 transitions. [2020-08-18 11:54:54,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:54:54,192 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 145 transitions. [2020-08-18 11:54:54,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 11:54:54,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:54,194 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] [2020-08-18 11:54:54,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:54:54,195 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:54,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:54,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1017334303, now seen corresponding path program 1 times [2020-08-18 11:54:54,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:54,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160835830] [2020-08-18 11:54:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,482 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:54,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 11:54:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 11:54:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 11:54:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:54,604 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 11:54:54,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160835830] [2020-08-18 11:54:54,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:54,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:54:54,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50360389] [2020-08-18 11:54:54,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:54:54,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:54,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:54:54,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:54:54,607 INFO L87 Difference]: Start difference. First operand 125 states and 145 transitions. Second operand 6 states. [2020-08-18 11:54:54,974 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:56,089 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:56,823 INFO L93 Difference]: Finished difference Result 356 states and 440 transitions. [2020-08-18 11:54:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:54:56,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 11:54:56,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:56,827 INFO L225 Difference]: With dead ends: 356 [2020-08-18 11:54:56,828 INFO L226 Difference]: Without dead ends: 255 [2020-08-18 11:54:56,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:54:56,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-08-18 11:54:56,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 212. [2020-08-18 11:54:56,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-08-18 11:54:56,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 241 transitions. [2020-08-18 11:54:56,894 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 241 transitions. Word has length 65 [2020-08-18 11:54:56,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:56,894 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 241 transitions. [2020-08-18 11:54:56,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:54:56,895 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 241 transitions. [2020-08-18 11:54:56,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 11:54:56,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:56,897 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] [2020-08-18 11:54:56,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:54:56,897 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:56,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:56,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1244154125, now seen corresponding path program 1 times [2020-08-18 11:54:56,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:56,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389880793] [2020-08-18 11:54:56,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,251 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:57,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 11:54:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 11:54:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 11:54:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:57,376 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 11:54:57,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389880793] [2020-08-18 11:54:57,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:57,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:54:57,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698060078] [2020-08-18 11:54:57,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:54:57,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:57,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:54:57,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:54:57,379 INFO L87 Difference]: Start difference. First operand 212 states and 241 transitions. Second operand 8 states. [2020-08-18 11:54:57,884 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:58,824 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:59,154 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:59,673 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:59,911 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:00,174 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:01,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:01,144 INFO L93 Difference]: Finished difference Result 634 states and 779 transitions. [2020-08-18 11:55:01,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:55:01,145 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-18 11:55:01,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:01,150 INFO L225 Difference]: With dead ends: 634 [2020-08-18 11:55:01,151 INFO L226 Difference]: Without dead ends: 446 [2020-08-18 11:55:01,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 11:55:01,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-08-18 11:55:01,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 379. [2020-08-18 11:55:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 11:55:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 432 transitions. [2020-08-18 11:55:01,249 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 432 transitions. Word has length 79 [2020-08-18 11:55:01,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:01,250 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 432 transitions. [2020-08-18 11:55:01,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:55:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 432 transitions. [2020-08-18 11:55:01,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 11:55:01,252 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:01,252 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] [2020-08-18 11:55:01,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:55:01,253 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:01,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:01,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1996569391, now seen corresponding path program 1 times [2020-08-18 11:55:01,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:01,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914976888] [2020-08-18 11:55:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:01,517 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:01,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:01,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:01,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:01,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:01,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:01,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:55:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:01,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:55:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:01,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:01,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:01,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:01,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 11:55:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:01,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 11:55:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:01,642 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 11:55:01,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914976888] [2020-08-18 11:55:01,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:01,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:55:01,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506226447] [2020-08-18 11:55:01,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:55:01,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:01,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:55:01,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:55:01,645 INFO L87 Difference]: Start difference. First operand 379 states and 432 transitions. Second operand 9 states. [2020-08-18 11:55:02,084 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:03,258 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:03,555 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:04,626 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:04,888 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:05,122 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:05,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:05,501 INFO L93 Difference]: Finished difference Result 488 states and 612 transitions. [2020-08-18 11:55:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 11:55:05,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 11:55:05,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:05,506 INFO L225 Difference]: With dead ends: 488 [2020-08-18 11:55:05,507 INFO L226 Difference]: Without dead ends: 485 [2020-08-18 11:55:05,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 11:55:05,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-18 11:55:05,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 379. [2020-08-18 11:55:05,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 11:55:05,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 431 transitions. [2020-08-18 11:55:05,616 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 431 transitions. Word has length 83 [2020-08-18 11:55:05,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:05,616 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 431 transitions. [2020-08-18 11:55:05,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:55:05,617 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 431 transitions. [2020-08-18 11:55:05,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 11:55:05,618 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:05,619 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:05,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:55:05,619 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:05,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:05,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1098775200, now seen corresponding path program 1 times [2020-08-18 11:55:05,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:05,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261931047] [2020-08-18 11:55:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:05,857 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:05,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:05,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:05,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:05,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:05,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:05,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:55:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:05,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:55:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:05,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:05,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:06,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:06,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:06,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:06,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:06,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 11:55:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:06,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 11:55:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 11:55:06,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261931047] [2020-08-18 11:55:06,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:06,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:55:06,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610183940] [2020-08-18 11:55:06,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:55:06,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:06,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:55:06,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:55:06,051 INFO L87 Difference]: Start difference. First operand 379 states and 431 transitions. Second operand 9 states. [2020-08-18 11:55:07,083 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:07,333 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:55:07,578 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:07,833 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:08,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:08,887 INFO L93 Difference]: Finished difference Result 848 states and 1052 transitions. [2020-08-18 11:55:08,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:55:08,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-08-18 11:55:08,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:08,893 INFO L225 Difference]: With dead ends: 848 [2020-08-18 11:55:08,893 INFO L226 Difference]: Without dead ends: 493 [2020-08-18 11:55:08,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:55:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-08-18 11:55:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 389. [2020-08-18 11:55:08,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-08-18 11:55:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 441 transitions. [2020-08-18 11:55:08,974 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 441 transitions. Word has length 99 [2020-08-18 11:55:08,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:08,974 INFO L479 AbstractCegarLoop]: Abstraction has 389 states and 441 transitions. [2020-08-18 11:55:08,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:55:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 441 transitions. [2020-08-18 11:55:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 11:55:08,977 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:08,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:08,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 11:55:08,978 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:08,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:08,979 INFO L82 PathProgramCache]: Analyzing trace with hash -205288862, now seen corresponding path program 1 times [2020-08-18 11:55:08,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:08,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625419827] [2020-08-18 11:55:08,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,220 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:09,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:55:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:55:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 11:55:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 11:55:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 11:55:09,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625419827] [2020-08-18 11:55:09,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:09,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 11:55:09,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320163533] [2020-08-18 11:55:09,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 11:55:09,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:09,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 11:55:09,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:55:09,364 INFO L87 Difference]: Start difference. First operand 389 states and 441 transitions. Second operand 11 states. [2020-08-18 11:55:09,933 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:10,163 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:10,375 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:10,971 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:11,211 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:11,454 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:12,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:12,666 INFO L93 Difference]: Finished difference Result 868 states and 1074 transitions. [2020-08-18 11:55:12,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:55:12,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 99 [2020-08-18 11:55:12,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:12,677 INFO L225 Difference]: With dead ends: 868 [2020-08-18 11:55:12,678 INFO L226 Difference]: Without dead ends: 503 [2020-08-18 11:55:12,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:55:12,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-08-18 11:55:12,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 397. [2020-08-18 11:55:12,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-18 11:55:12,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 449 transitions. [2020-08-18 11:55:12,790 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 449 transitions. Word has length 99 [2020-08-18 11:55:12,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:12,791 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 449 transitions. [2020-08-18 11:55:12,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 11:55:12,791 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 449 transitions. [2020-08-18 11:55:12,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 11:55:12,794 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:12,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:12,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 11:55:12,795 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:12,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:12,795 INFO L82 PathProgramCache]: Analyzing trace with hash -213048221, now seen corresponding path program 1 times [2020-08-18 11:55:12,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:12,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11387894] [2020-08-18 11:55:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,057 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:13,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:55:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:55:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 11:55:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 11:55:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:13,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 11:55:13,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11387894] [2020-08-18 11:55:13,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:13,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 11:55:13,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296561639] [2020-08-18 11:55:13,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:55:13,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:13,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:55:13,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:55:13,213 INFO L87 Difference]: Start difference. First operand 397 states and 449 transitions. Second operand 7 states. [2020-08-18 11:55:13,745 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:14,297 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:16,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:16,532 INFO L93 Difference]: Finished difference Result 1210 states and 1548 transitions. [2020-08-18 11:55:16,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 11:55:16,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-08-18 11:55:16,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:16,539 INFO L225 Difference]: With dead ends: 1210 [2020-08-18 11:55:16,540 INFO L226 Difference]: Without dead ends: 837 [2020-08-18 11:55:16,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 11:55:16,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-08-18 11:55:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 717. [2020-08-18 11:55:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-08-18 11:55:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 843 transitions. [2020-08-18 11:55:16,704 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 843 transitions. Word has length 99 [2020-08-18 11:55:16,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:16,705 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 843 transitions. [2020-08-18 11:55:16,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:55:16,706 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 843 transitions. [2020-08-18 11:55:16,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 11:55:16,709 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:16,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:16,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 11:55:16,709 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:16,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:16,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1140072279, now seen corresponding path program 1 times [2020-08-18 11:55:16,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:16,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333688515] [2020-08-18 11:55:16,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:16,975 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:16,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:16,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:16,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:16,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:17,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:17,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:55:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:17,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:55:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:17,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:55:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:17,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:17,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:17,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:17,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:17,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:17,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:17,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:17,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 11:55:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:17,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 11:55:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 11:55:17,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333688515] [2020-08-18 11:55:17,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:55:17,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 11:55:17,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172293002] [2020-08-18 11:55:17,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 11:55:17,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:17,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 11:55:17,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 11:55:17,326 INFO L87 Difference]: Start difference. First operand 717 states and 843 transitions. Second operand 17 states. [2020-08-18 11:55:18,119 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:18,435 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:18,721 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:18,961 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:19,595 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:20,667 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:20,990 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:21,274 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:21,552 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:21,864 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:22,128 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:22,693 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 11:55:23,254 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 11:55:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:25,452 INFO L93 Difference]: Finished difference Result 1499 states and 1843 transitions. [2020-08-18 11:55:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 11:55:25,452 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 103 [2020-08-18 11:55:25,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:25,461 INFO L225 Difference]: With dead ends: 1499 [2020-08-18 11:55:25,462 INFO L226 Difference]: Without dead ends: 806 [2020-08-18 11:55:25,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2020-08-18 11:55:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-08-18 11:55:25,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 689. [2020-08-18 11:55:25,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-08-18 11:55:25,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 797 transitions. [2020-08-18 11:55:25,603 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 797 transitions. Word has length 103 [2020-08-18 11:55:25,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:25,604 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 797 transitions. [2020-08-18 11:55:25,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 11:55:25,604 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 797 transitions. [2020-08-18 11:55:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 11:55:25,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:25,608 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:25,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 11:55:25,609 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:25,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:25,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1934361844, now seen corresponding path program 1 times [2020-08-18 11:55:25,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:25,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706934970] [2020-08-18 11:55:25,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:25,946 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:25,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:25,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:25,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:25,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:25,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:55:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 11:55:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:55:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 11:55:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 11:55:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 11:55:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 11:55:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 11:55:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 11:55:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 11:55:26,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706934970] [2020-08-18 11:55:26,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:55:26,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 11:55:26,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183397255] [2020-08-18 11:55:26,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 11:55:26,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:26,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 11:55:26,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:55:26,286 INFO L87 Difference]: Start difference. First operand 689 states and 797 transitions. Second operand 18 states. [2020-08-18 11:55:27,037 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:27,385 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:27,655 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:27,916 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:28,593 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:29,655 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:29,976 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:30,244 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:30,517 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:30,846 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:31,108 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:32,191 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:32,421 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:32,685 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:32,925 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:33,784 INFO L93 Difference]: Finished difference Result 1274 states and 1566 transitions. [2020-08-18 11:55:33,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-18 11:55:33,785 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 155 [2020-08-18 11:55:33,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:33,786 INFO L225 Difference]: With dead ends: 1274 [2020-08-18 11:55:33,786 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 11:55:33,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=378, Invalid=1692, Unknown=0, NotChecked=0, Total=2070 [2020-08-18 11:55:33,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 11:55:33,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 11:55:33,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 11:55:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 11:55:33,791 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2020-08-18 11:55:33,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:33,792 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 11:55:33,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 11:55:33,792 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 11:55:33,792 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 11:55:33,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 11:55:33,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 11:55:34,790 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-18 11:55:35,353 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 197 [2020-08-18 11:55:35,468 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-18 11:55:35,632 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 197 [2020-08-18 11:55:36,761 WARN L193 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 262 [2020-08-18 11:55:38,130 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 263 [2020-08-18 11:55:39,617 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 263 [2020-08-18 11:55:40,591 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 262 [2020-08-18 11:55:41,099 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 262 [2020-08-18 11:55:41,277 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 18 [2020-08-18 11:55:41,755 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 16 [2020-08-18 11:55:42,272 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 24 [2020-08-18 11:55:42,444 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-18 11:55:42,619 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-18 11:55:42,811 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-18 11:55:43,396 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 24