/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:48:23,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:48:23,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:48:23,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:48:23,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:48:23,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:48:23,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:48:23,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:48:23,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:48:23,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:48:23,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:48:23,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:48:23,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:48:23,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:48:23,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:48:23,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:48:23,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:48:23,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:48:23,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:48:23,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:48:23,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:48:23,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:48:23,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:48:23,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:48:23,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:48:23,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:48:23,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:48:23,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:48:23,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:48:23,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:48:23,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:48:23,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:48:23,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:48:23,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:48:23,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:48:23,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:48:23,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:48:23,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:48:23,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:48:23,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:48:23,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:48:23,852 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 [2020-08-22 02:48:23,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:48:23,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:48:23,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:48:23,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:48:23,875 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:48:23,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:48:23,876 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:48:23,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:48:23,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:48:23,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:48:23,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:48:23,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:48:23,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:48:23,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:48:23,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:48:23,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:48:23,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:48:23,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:48:23,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:48:23,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:48:23,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:48:23,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:48:23,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:48:23,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:48:23,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:48:23,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:48:23,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:48:23,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:48:23,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:48:23,880 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 02:48:24,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:48:24,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:48:24,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:48:24,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:48:24,186 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:48:24,186 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-22 02:48:24,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b74346266/e11cea2d2ac64bb2901f7e141033ff54/FLAG0e24f16c0 [2020-08-22 02:48:24,751 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:48:24,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-22 02:48:24,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b74346266/e11cea2d2ac64bb2901f7e141033ff54/FLAG0e24f16c0 [2020-08-22 02:48:25,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b74346266/e11cea2d2ac64bb2901f7e141033ff54 [2020-08-22 02:48:25,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:48:25,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:48:25,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:48:25,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:48:25,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:48:25,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:48:25" (1/1) ... [2020-08-22 02:48:25,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a00533e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:25, skipping insertion in model container [2020-08-22 02:48:25,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:48:25" (1/1) ... [2020-08-22 02:48:25,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:48:25,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:48:25,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:48:25,698 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:48:25,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:48:25,821 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:48:25,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:25 WrapperNode [2020-08-22 02:48:25,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:48:25,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:48:25,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:48:25,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:48:25,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:25" (1/1) ... [2020-08-22 02:48:25,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:25" (1/1) ... [2020-08-22 02:48:25,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:25" (1/1) ... [2020-08-22 02:48:25,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:25" (1/1) ... [2020-08-22 02:48:25,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:25" (1/1) ... [2020-08-22 02:48:25,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:25" (1/1) ... [2020-08-22 02:48:25,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:25" (1/1) ... [2020-08-22 02:48:25,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:48:25,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:48:25,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:48:25,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:48:25,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:25" (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 [2020-08-22 02:48:25,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:48:25,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:48:25,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:48:25,989 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:48:25,989 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:48:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:48:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:48:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:48:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:48:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:48:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:48:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:48:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:48:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 02:48:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:48:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:48:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:48:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:48:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:48:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:48:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:48:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:48:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:48:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 02:48:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:48:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:48:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:48:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:48:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:48:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:48:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:48:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:48:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:48:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:48:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:48:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:48:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:48:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:48:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:48:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:48:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:48:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:48:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:48:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:48:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:48:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:48:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:48:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:48:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:48:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:48:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:48:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:48:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:48:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:48:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:48:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:48:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 02:48:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:48:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:48:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:48:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 02:48:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:48:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:48:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:48:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:48:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:48:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:48:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:48:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:48:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:48:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:48:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:48:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:48:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:48:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:48:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:48:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:48:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:48:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:48:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:48:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:48:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:48:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:48:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:48:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:48:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:48:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:48:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:48:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:48:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:48:26,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:48:26,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:48:27,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:48:27,105 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:48:27,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:48:27 BoogieIcfgContainer [2020-08-22 02:48:27,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:48:27,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:48:27,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:48:27,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:48:27,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:48:25" (1/3) ... [2020-08-22 02:48:27,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3e6014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:48:27, skipping insertion in model container [2020-08-22 02:48:27,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:25" (2/3) ... [2020-08-22 02:48:27,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3e6014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:48:27, skipping insertion in model container [2020-08-22 02:48:27,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:48:27" (3/3) ... [2020-08-22 02:48:27,125 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product43.cil.c [2020-08-22 02:48:27,136 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:48:27,146 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:48:27,160 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:48:27,188 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:48:27,188 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:48:27,188 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:48:27,188 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:48:27,189 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:48:27,189 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:48:27,189 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:48:27,189 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:48:27,211 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-22 02:48:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 02:48:27,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:27,222 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] [2020-08-22 02:48:27,223 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:27,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:27,229 INFO L82 PathProgramCache]: Analyzing trace with hash 2058113087, now seen corresponding path program 1 times [2020-08-22 02:48:27,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:27,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091016255] [2020-08-22 02:48:27,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:27,934 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:27,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:28,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:28,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:28,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:28,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:28,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:48:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:28,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:48:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:28,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091016255] [2020-08-22 02:48:28,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:28,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:48:28,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844573030] [2020-08-22 02:48:28,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:48:28,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:28,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:48:28,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:48:28,095 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 3 states. [2020-08-22 02:48:29,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:29,272 INFO L93 Difference]: Finished difference Result 295 states and 384 transitions. [2020-08-22 02:48:29,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:48:29,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 02:48:29,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:29,289 INFO L225 Difference]: With dead ends: 295 [2020-08-22 02:48:29,290 INFO L226 Difference]: Without dead ends: 160 [2020-08-22 02:48:29,294 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 [2020-08-22 02:48:29,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-22 02:48:29,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 126. [2020-08-22 02:48:29,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-22 02:48:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-22 02:48:29,382 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 46 [2020-08-22 02:48:29,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:29,383 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-22 02:48:29,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:48:29,383 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-22 02:48:29,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 02:48:29,387 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:29,387 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] [2020-08-22 02:48:29,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:48:29,388 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:29,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:29,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1232914971, now seen corresponding path program 1 times [2020-08-22 02:48:29,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:29,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444178442] [2020-08-22 02:48:29,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:29,746 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:29,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:29,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:29,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:29,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:29,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:29,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:48:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:29,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:48:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:29,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444178442] [2020-08-22 02:48:29,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:29,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:48:29,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782674552] [2020-08-22 02:48:29,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:48:29,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:29,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:48:29,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:48:29,805 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 4 states. [2020-08-22 02:48:30,223 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:30,923 INFO L93 Difference]: Finished difference Result 219 states and 265 transitions. [2020-08-22 02:48:30,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:48:30,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 02:48:30,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:30,926 INFO L225 Difference]: With dead ends: 219 [2020-08-22 02:48:30,926 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 02:48:30,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:48:30,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 02:48:30,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 117. [2020-08-22 02:48:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-22 02:48:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-08-22 02:48:30,967 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 47 [2020-08-22 02:48:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:30,969 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-08-22 02:48:30,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:48:30,970 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-08-22 02:48:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 02:48:30,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:30,976 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] [2020-08-22 02:48:30,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:48:30,976 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:30,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1264843506, now seen corresponding path program 1 times [2020-08-22 02:48:30,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:30,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750799210] [2020-08-22 02:48:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:31,311 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:31,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:31,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:31,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:31,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:31,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:31,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:48:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:31,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:48:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:31,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750799210] [2020-08-22 02:48:31,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:31,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:48:31,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704003981] [2020-08-22 02:48:31,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:48:31,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:31,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:48:31,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:48:31,402 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 8 states. [2020-08-22 02:48:31,820 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:32,158 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:32,419 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:32,654 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:33,391 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:34,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:34,990 INFO L93 Difference]: Finished difference Result 403 states and 495 transitions. [2020-08-22 02:48:34,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:48:34,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 02:48:34,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:34,997 INFO L225 Difference]: With dead ends: 403 [2020-08-22 02:48:34,997 INFO L226 Difference]: Without dead ends: 310 [2020-08-22 02:48:34,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:48:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-08-22 02:48:35,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 240. [2020-08-22 02:48:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-22 02:48:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 286 transitions. [2020-08-22 02:48:35,092 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 286 transitions. Word has length 51 [2020-08-22 02:48:35,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:35,093 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 286 transitions. [2020-08-22 02:48:35,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:48:35,093 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 286 transitions. [2020-08-22 02:48:35,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 02:48:35,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:35,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:48:35,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:48:35,102 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:35,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:35,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1557328557, now seen corresponding path program 1 times [2020-08-22 02:48:35,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:35,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281610562] [2020-08-22 02:48:35,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:35,466 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:35,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:35,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:35,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:35,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:35,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:35,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:48:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:35,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:48:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:35,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 02:48:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:35,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:35,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281610562] [2020-08-22 02:48:35,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:35,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:48:35,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976053092] [2020-08-22 02:48:35,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:48:35,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:35,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:48:35,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:48:35,557 INFO L87 Difference]: Start difference. First operand 240 states and 286 transitions. Second operand 8 states. [2020-08-22 02:48:35,974 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:37,084 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:37,392 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:37,649 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:37,913 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:38,251 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:39,272 INFO L93 Difference]: Finished difference Result 778 states and 999 transitions. [2020-08-22 02:48:39,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:48:39,273 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 02:48:39,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:39,285 INFO L225 Difference]: With dead ends: 778 [2020-08-22 02:48:39,285 INFO L226 Difference]: Without dead ends: 562 [2020-08-22 02:48:39,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:48:39,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-08-22 02:48:39,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 435. [2020-08-22 02:48:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-22 02:48:39,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 522 transitions. [2020-08-22 02:48:39,416 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 522 transitions. Word has length 57 [2020-08-22 02:48:39,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:39,416 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 522 transitions. [2020-08-22 02:48:39,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:48:39,417 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 522 transitions. [2020-08-22 02:48:39,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 02:48:39,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:39,418 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] [2020-08-22 02:48:39,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:48:39,419 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:39,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:39,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2005186865, now seen corresponding path program 1 times [2020-08-22 02:48:39,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:39,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972243777] [2020-08-22 02:48:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:39,689 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:39,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:39,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:39,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:39,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:39,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:39,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:48:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:39,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:48:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:39,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:48:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:39,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:48:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:39,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972243777] [2020-08-22 02:48:39,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:39,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:48:39,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661532625] [2020-08-22 02:48:39,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:48:39,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:39,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:48:39,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:48:39,800 INFO L87 Difference]: Start difference. First operand 435 states and 522 transitions. Second operand 9 states. [2020-08-22 02:48:40,289 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:41,287 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:41,591 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:41,855 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:42,512 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:42,781 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:43,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:43,561 INFO L93 Difference]: Finished difference Result 1224 states and 1608 transitions. [2020-08-22 02:48:43,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:48:43,562 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-22 02:48:43,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:43,569 INFO L225 Difference]: With dead ends: 1224 [2020-08-22 02:48:43,569 INFO L226 Difference]: Without dead ends: 813 [2020-08-22 02:48:43,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:48:43,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-08-22 02:48:43,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 655. [2020-08-22 02:48:43,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-08-22 02:48:43,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 799 transitions. [2020-08-22 02:48:43,723 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 799 transitions. Word has length 61 [2020-08-22 02:48:43,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:43,724 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 799 transitions. [2020-08-22 02:48:43,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:48:43,724 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 799 transitions. [2020-08-22 02:48:43,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 02:48:43,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:43,728 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] [2020-08-22 02:48:43,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:48:43,728 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:43,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:43,729 INFO L82 PathProgramCache]: Analyzing trace with hash 90269024, now seen corresponding path program 1 times [2020-08-22 02:48:43,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:43,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634969750] [2020-08-22 02:48:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,035 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:44,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:48:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:48:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:48:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 02:48:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 02:48:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:48:44,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634969750] [2020-08-22 02:48:44,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:44,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:48:44,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533600793] [2020-08-22 02:48:44,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:48:44,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:44,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:48:44,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:48:44,212 INFO L87 Difference]: Start difference. First operand 655 states and 799 transitions. Second operand 9 states. [2020-08-22 02:48:44,728 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:45,609 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:45,877 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:48:46,138 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:46,408 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:48:48,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:48,326 INFO L93 Difference]: Finished difference Result 2244 states and 3141 transitions. [2020-08-22 02:48:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:48:48,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-22 02:48:48,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:48,338 INFO L225 Difference]: With dead ends: 2244 [2020-08-22 02:48:48,338 INFO L226 Difference]: Without dead ends: 1613 [2020-08-22 02:48:48,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:48:48,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2020-08-22 02:48:48,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1239. [2020-08-22 02:48:48,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-08-22 02:48:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1508 transitions. [2020-08-22 02:48:48,621 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1508 transitions. Word has length 93 [2020-08-22 02:48:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:48,622 INFO L479 AbstractCegarLoop]: Abstraction has 1239 states and 1508 transitions. [2020-08-22 02:48:48,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:48:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1508 transitions. [2020-08-22 02:48:48,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 02:48:48,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:48,630 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] [2020-08-22 02:48:48,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:48:48,632 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:48,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:48,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1880670433, now seen corresponding path program 1 times [2020-08-22 02:48:48,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:48,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63787025] [2020-08-22 02:48:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:48,983 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:48,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:48:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:48:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:48:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 02:48:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 02:48:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:48:49,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63787025] [2020-08-22 02:48:49,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:49,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:48:49,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753001352] [2020-08-22 02:48:49,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:48:49,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:49,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:48:49,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:48:49,273 INFO L87 Difference]: Start difference. First operand 1239 states and 1508 transitions. Second operand 9 states. [2020-08-22 02:48:50,400 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:50,668 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:48:50,931 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:51,162 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:52,223 INFO L93 Difference]: Finished difference Result 2857 states and 3834 transitions. [2020-08-22 02:48:52,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:48:52,224 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-22 02:48:52,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:52,236 INFO L225 Difference]: With dead ends: 2857 [2020-08-22 02:48:52,236 INFO L226 Difference]: Without dead ends: 1642 [2020-08-22 02:48:52,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:48:52,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-08-22 02:48:52,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1279. [2020-08-22 02:48:52,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-22 02:48:52,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1548 transitions. [2020-08-22 02:48:52,462 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1548 transitions. Word has length 93 [2020-08-22 02:48:52,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:52,462 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1548 transitions. [2020-08-22 02:48:52,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:48:52,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1548 transitions. [2020-08-22 02:48:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 02:48:52,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:52,466 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] [2020-08-22 02:48:52,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:48:52,467 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:52,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1516903585, now seen corresponding path program 1 times [2020-08-22 02:48:52,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:52,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552089920] [2020-08-22 02:48:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,769 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:52,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:48:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:48:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:48:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 02:48:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 02:48:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:48:52,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552089920] [2020-08-22 02:48:52,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:52,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:48:52,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119391121] [2020-08-22 02:48:52,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:48:52,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:52,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:48:52,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:48:52,907 INFO L87 Difference]: Start difference. First operand 1279 states and 1548 transitions. Second operand 11 states. [2020-08-22 02:48:53,476 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:53,709 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:53,943 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:54,568 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:54,812 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:55,054 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:56,143 INFO L93 Difference]: Finished difference Result 2491 states and 3236 transitions. [2020-08-22 02:48:56,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:48:56,144 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 02:48:56,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:56,154 INFO L225 Difference]: With dead ends: 2491 [2020-08-22 02:48:56,154 INFO L226 Difference]: Without dead ends: 1236 [2020-08-22 02:48:56,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:48:56,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2020-08-22 02:48:56,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1005. [2020-08-22 02:48:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-08-22 02:48:56,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1188 transitions. [2020-08-22 02:48:56,340 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1188 transitions. Word has length 93 [2020-08-22 02:48:56,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:56,342 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1188 transitions. [2020-08-22 02:48:56,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:48:56,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1188 transitions. [2020-08-22 02:48:56,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-22 02:48:56,345 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:56,345 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] [2020-08-22 02:48:56,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:48:56,345 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:56,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:56,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1451570632, now seen corresponding path program 1 times [2020-08-22 02:48:56,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:56,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148308452] [2020-08-22 02:48:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,661 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:56,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:48:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:48:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:48:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:48:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 02:48:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 02:48:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 02:48:56,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148308452] [2020-08-22 02:48:56,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:48:56,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 02:48:56,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009470456] [2020-08-22 02:48:56,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 02:48:56,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:56,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 02:48:56,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-22 02:48:56,973 INFO L87 Difference]: Start difference. First operand 1005 states and 1188 transitions. Second operand 17 states. [2020-08-22 02:48:57,682 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:58,020 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:48:58,280 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:48:58,515 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:48:59,115 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:59,692 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:00,068 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:01,063 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:01,339 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:01,730 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:02,026 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:02,557 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-22 02:49:03,064 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-22 02:49:04,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:04,304 INFO L93 Difference]: Finished difference Result 2201 states and 2748 transitions. [2020-08-22 02:49:04,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 02:49:04,305 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-22 02:49:04,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:04,312 INFO L225 Difference]: With dead ends: 2201 [2020-08-22 02:49:04,312 INFO L226 Difference]: Without dead ends: 1220 [2020-08-22 02:49:04,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=328, Invalid=1312, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 02:49:04,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-08-22 02:49:04,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 983. [2020-08-22 02:49:04,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-08-22 02:49:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1139 transitions. [2020-08-22 02:49:04,522 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1139 transitions. Word has length 97 [2020-08-22 02:49:04,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:04,523 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1139 transitions. [2020-08-22 02:49:04,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 02:49:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1139 transitions. [2020-08-22 02:49:04,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 02:49:04,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:04,532 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-22 02:49:04,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:49:04,533 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:04,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:04,533 INFO L82 PathProgramCache]: Analyzing trace with hash -914965907, now seen corresponding path program 1 times [2020-08-22 02:49:04,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:04,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715066309] [2020-08-22 02:49:04,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,877 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:04,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:49:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:49:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:49:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 02:49:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:04,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 02:49:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:05,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-22 02:49:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:05,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 02:49:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:05,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 02:49:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 02:49:05,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715066309] [2020-08-22 02:49:05,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:49:05,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 02:49:05,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394341121] [2020-08-22 02:49:05,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:49:05,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:05,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:49:05,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:49:05,037 INFO L87 Difference]: Start difference. First operand 983 states and 1139 transitions. Second operand 9 states. [2020-08-22 02:49:05,946 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:07,492 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:08,221 INFO L93 Difference]: Finished difference Result 2643 states and 3463 transitions. [2020-08-22 02:49:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 02:49:08,221 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-08-22 02:49:08,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:08,232 INFO L225 Difference]: With dead ends: 2643 [2020-08-22 02:49:08,232 INFO L226 Difference]: Without dead ends: 1980 [2020-08-22 02:49:08,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-08-22 02:49:08,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-08-22 02:49:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1593. [2020-08-22 02:49:08,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-08-22 02:49:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 1869 transitions. [2020-08-22 02:49:08,577 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 1869 transitions. Word has length 132 [2020-08-22 02:49:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:08,578 INFO L479 AbstractCegarLoop]: Abstraction has 1593 states and 1869 transitions. [2020-08-22 02:49:08,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:49:08,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 1869 transitions. [2020-08-22 02:49:08,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 02:49:08,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:08,583 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-22 02:49:08,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:49:08,584 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:08,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:08,584 INFO L82 PathProgramCache]: Analyzing trace with hash -405492817, now seen corresponding path program 1 times [2020-08-22 02:49:08,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:08,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974407352] [2020-08-22 02:49:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:49:08,662 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:49:08,662 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:49:08,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:49:08,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:49:08 BoogieIcfgContainer [2020-08-22 02:49:08,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:49:08,721 INFO L168 Benchmark]: Toolchain (without parser) took 43603.04 ms. Allocated memory was 148.4 MB in the beginning and 746.1 MB in the end (delta: 597.7 MB). Free memory was 103.2 MB in the beginning and 613.5 MB in the end (delta: -510.3 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:08,722 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:49:08,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.83 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 103.0 MB in the beginning and 172.6 MB in the end (delta: -69.6 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:08,724 INFO L168 Benchmark]: Boogie Preprocessor took 91.09 ms. Allocated memory is still 205.0 MB. Free memory was 172.6 MB in the beginning and 168.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:08,727 INFO L168 Benchmark]: RCFGBuilder took 1201.35 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 168.8 MB in the beginning and 193.5 MB in the end (delta: -24.7 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:08,727 INFO L168 Benchmark]: TraceAbstraction took 41593.23 ms. Allocated memory was 234.9 MB in the beginning and 746.1 MB in the end (delta: 511.2 MB). Free memory was 193.5 MB in the beginning and 613.5 MB in the end (delta: -420.0 MB). Peak memory consumption was 91.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:08,741 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.83 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 103.0 MB in the beginning and 172.6 MB in the end (delta: -69.6 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.09 ms. Allocated memory is still 205.0 MB. Free memory was 172.6 MB in the beginning and 168.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1201.35 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 168.8 MB in the beginning and 193.5 MB in the end (delta: -24.7 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41593.23 ms. Allocated memory was 234.9 MB in the beginning and 746.1 MB in the end (delta: 511.2 MB). Free memory was 193.5 MB in the beginning and 613.5 MB in the end (delta: -420.0 MB). Peak memory consumption was 91.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 405]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L147] int pumpRunning = 0; [L148] int systemActive = 1; [L436] int cleanupTimeShifts = 4; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L512] int retValue_acc ; [L513] int tmp ; [L517] FCALL select_helpers() [L518] FCALL select_features() [L519] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L519] RET, EXPR valid_product() [L519] tmp = valid_product() [L521] COND TRUE \read(tmp) [L523] FCALL setup() [L524] CALL runTest() [L503] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND FALSE !(\read(tmp___0)) [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND FALSE !(\read(pumpRunning)) [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND TRUE ! pumpRunning [L189] CALL, EXPR isHighWaterLevel() [L299] int retValue_acc ; [L300] int tmp ; [L301] int tmp___0 ; [L305] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L305] RET, EXPR isHighWaterSensorDry() [L305] tmp = isHighWaterSensorDry() [L307] COND FALSE !(\read(tmp)) [L310] tmp___0 = 1 [L312] retValue_acc = tmp___0 [L313] return (retValue_acc); [L189] RET, EXPR isHighWaterLevel() [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) [L193] CALL activatePump() [L218] int tmp ; [L222] CALL, EXPR isMethaneAlarm() [L243] int retValue_acc ; [L247] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L247] RET, EXPR isMethaneLevelCritical() [L247] retValue_acc = isMethaneLevelCritical() [L249] return (retValue_acc); [L222] RET, EXPR isMethaneAlarm() [L222] tmp = isMethaneAlarm() [L224] COND FALSE !(\read(tmp)) [L228] CALL activatePump__wrappee__highWaterSensor() [L212] pumpRunning = 1 [L228] RET activatePump__wrappee__highWaterSensor() [L193] RET activatePump() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND FALSE !(\read(tmp)) [L170] RET __utac_acc__Specification1_spec__1() [L389] RET timeShift() [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND FALSE !(\read(tmp)) [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND TRUE \read(tmp) [L420] CALL, EXPR isPumpRunning() [L254] int retValue_acc ; [L257] retValue_acc = pumpRunning [L258] return (retValue_acc); [L420] RET, EXPR isPumpRunning() [L420] tmp___0 = isPumpRunning() [L422] COND TRUE \read(tmp___0) [L424] CALL __automaton_fail() [L405] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.4s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 34.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1227 SDtfs, 2978 SDslu, 1540 SDs, 0 SdLazy, 8005 SolverSat, 2017 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 430 GetRequests, 279 SyntacticMatches, 5 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 14.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1593occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 2008 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 760 ConstructedInterpolants, 0 QuantifiedInterpolants, 247082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 37/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...