/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:13:31,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:13:31,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:13:31,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:13:31,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:13:31,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:13:31,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:13:31,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:13:31,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:13:31,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:13:31,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:13:31,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:13:31,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:13:31,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:13:31,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:13:31,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:13:31,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:13:31,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:13:31,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:13:31,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:13:31,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:13:31,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:13:31,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:13:31,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:13:31,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:13:31,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:13:31,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:13:31,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:13:31,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:13:31,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:13:31,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:13:31,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:13:31,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:13:31,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:13:31,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:13:31,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:13:31,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:13:31,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:13:31,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:13:31,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:13:31,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:13:31,635 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 [2020-09-21 10:13:31,679 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:13:31,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:13:31,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:13:31,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:13:31,682 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:13:31,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:13:31,682 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:13:31,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:13:31,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:13:31,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:13:31,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:13:31,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:13:31,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:13:31,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:13:31,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:13:31,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:13:31,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:13:31,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:13:31,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:13:31,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:13:31,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:13:31,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:13:31,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:13:31,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:13:31,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:13:31,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:13:31,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:13:31,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:13:31,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:13:31,688 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 -> false [2020-09-21 10:13:32,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:13:32,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:13:32,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:13:32,181 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:13:32,182 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:13:32,183 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product33.cil.c [2020-09-21 10:13:32,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01f6079f7/cff2a11c27ab481692e3784370456c62/FLAG2950b9b71 [2020-09-21 10:13:32,852 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:13:32,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product33.cil.c [2020-09-21 10:13:32,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01f6079f7/cff2a11c27ab481692e3784370456c62/FLAG2950b9b71 [2020-09-21 10:13:33,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01f6079f7/cff2a11c27ab481692e3784370456c62 [2020-09-21 10:13:33,129 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:13:33,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:13:33,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:13:33,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:13:33,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:13:33,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:13:33" (1/1) ... [2020-09-21 10:13:33,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:33, skipping insertion in model container [2020-09-21 10:13:33,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:13:33" (1/1) ... [2020-09-21 10:13:33,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:13:33,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:13:33,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:13:33,777 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:13:33,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:13:33,899 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:13:33,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:33 WrapperNode [2020-09-21 10:13:33,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:13:33,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:13:33,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:13:33,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:13:33,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:33" (1/1) ... [2020-09-21 10:13:33,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:33" (1/1) ... [2020-09-21 10:13:33,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:33" (1/1) ... [2020-09-21 10:13:33,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:33" (1/1) ... [2020-09-21 10:13:33,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:33" (1/1) ... [2020-09-21 10:13:33,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:33" (1/1) ... [2020-09-21 10:13:33,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:33" (1/1) ... [2020-09-21 10:13:33,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:13:33,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:13:33,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:13:33,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:13:33,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:13:34,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:13:34,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:13:34,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:13:34,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:13:34,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:13:34,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:13:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:13:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:13:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:13:34,081 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:13:34,082 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:13:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:13:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:13:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:13:34,083 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:13:34,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:13:34,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:13:34,084 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:13:34,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:13:34,085 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:13:34,086 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:13:34,086 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:13:34,086 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:13:34,086 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:13:34,088 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:13:34,088 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:13:34,089 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:13:34,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:13:34,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:13:34,089 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:13:34,089 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:13:34,089 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:13:34,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:13:34,090 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:13:34,090 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:13:34,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:13:34,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-09-21 10:13:34,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-09-21 10:13:34,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-09-21 10:13:34,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:13:34,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:13:34,091 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:13:34,091 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:13:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:13:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:13:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:13:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:13:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:13:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:13:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:13:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:13:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:13:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:13:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:13:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:13:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:13:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:13:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:13:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:13:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:13:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:13:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:13:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:13:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:13:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:13:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:13:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:13:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:13:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:13:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:13:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:13:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:13:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-09-21 10:13:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-09-21 10:13:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:13:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:13:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:13:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:13:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:13:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:13:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:13:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:13:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:13:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:13:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-09-21 10:13:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:13:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:13:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:13:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:13:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:13:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:13:34,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:13:35,121 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:13:35,121 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:13:35,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:13:35 BoogieIcfgContainer [2020-09-21 10:13:35,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:13:35,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:13:35,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:13:35,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:13:35,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:13:33" (1/3) ... [2020-09-21 10:13:35,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eba9b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:13:35, skipping insertion in model container [2020-09-21 10:13:35,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:33" (2/3) ... [2020-09-21 10:13:35,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eba9b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:13:35, skipping insertion in model container [2020-09-21 10:13:35,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:13:35" (3/3) ... [2020-09-21 10:13:35,137 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product33.cil.c [2020-09-21 10:13:35,149 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:13:35,161 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:13:35,180 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:13:35,206 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:13:35,207 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:13:35,207 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:13:35,207 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:13:35,207 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:13:35,207 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:13:35,207 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:13:35,207 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:13:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-09-21 10:13:35,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-21 10:13:35,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:35,243 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] [2020-09-21 10:13:35,244 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:35,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:35,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1965832149, now seen corresponding path program 1 times [2020-09-21 10:13:35,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:35,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621477583] [2020-09-21 10:13:35,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:35,929 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:35,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:13:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:13:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:13:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:36,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621477583] [2020-09-21 10:13:36,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:36,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:13:36,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103167586] [2020-09-21 10:13:36,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:13:36,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:36,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:13:36,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:13:36,113 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 4 states. [2020-09-21 10:13:36,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:36,895 INFO L93 Difference]: Finished difference Result 255 states and 332 transitions. [2020-09-21 10:13:36,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:13:36,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-09-21 10:13:36,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:36,914 INFO L225 Difference]: With dead ends: 255 [2020-09-21 10:13:36,915 INFO L226 Difference]: Without dead ends: 141 [2020-09-21 10:13:36,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:13:36,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-09-21 10:13:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2020-09-21 10:13:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-21 10:13:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2020-09-21 10:13:37,013 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 59 [2020-09-21 10:13:37,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:37,014 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2020-09-21 10:13:37,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:13:37,014 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2020-09-21 10:13:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-21 10:13:37,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:37,018 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] [2020-09-21 10:13:37,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:13:37,019 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:37,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1025601363, now seen corresponding path program 1 times [2020-09-21 10:13:37,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:37,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254686134] [2020-09-21 10:13:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,392 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:37,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:13:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:13:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 10:13:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:37,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254686134] [2020-09-21 10:13:37,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:37,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:13:37,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475300281] [2020-09-21 10:13:37,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:13:37,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:37,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:13:37,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:13:37,473 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand 5 states. [2020-09-21 10:13:37,988 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:38,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:38,614 INFO L93 Difference]: Finished difference Result 200 states and 244 transitions. [2020-09-21 10:13:38,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:13:38,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-09-21 10:13:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:38,618 INFO L225 Difference]: With dead ends: 200 [2020-09-21 10:13:38,618 INFO L226 Difference]: Without dead ends: 131 [2020-09-21 10:13:38,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:13:38,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-21 10:13:38,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 106. [2020-09-21 10:13:38,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-21 10:13:38,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2020-09-21 10:13:38,673 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 60 [2020-09-21 10:13:38,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:38,674 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2020-09-21 10:13:38,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:13:38,674 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2020-09-21 10:13:38,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-21 10:13:38,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:38,677 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] [2020-09-21 10:13:38,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:13:38,677 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:38,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:38,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1650494658, now seen corresponding path program 1 times [2020-09-21 10:13:38,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:38,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952881662] [2020-09-21 10:13:38,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,105 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:39,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:13:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:13:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 10:13:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:39,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952881662] [2020-09-21 10:13:39,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:39,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:13:39,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019830705] [2020-09-21 10:13:39,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:13:39,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:39,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:13:39,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:13:39,254 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand 9 states. [2020-09-21 10:13:39,785 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:13:40,171 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:40,485 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:40,778 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:41,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:41,787 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2020-09-21 10:13:41,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:13:41,787 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-09-21 10:13:41,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:41,792 INFO L225 Difference]: With dead ends: 209 [2020-09-21 10:13:41,793 INFO L226 Difference]: Without dead ends: 131 [2020-09-21 10:13:41,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:13:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-21 10:13:41,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 106. [2020-09-21 10:13:41,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-21 10:13:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2020-09-21 10:13:41,847 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 64 [2020-09-21 10:13:41,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:41,850 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2020-09-21 10:13:41,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:13:41,851 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2020-09-21 10:13:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-21 10:13:41,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:41,862 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] [2020-09-21 10:13:41,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:13:41,862 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:41,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:41,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1464836383, now seen corresponding path program 1 times [2020-09-21 10:13:41,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:41,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434895827] [2020-09-21 10:13:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,296 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:42,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:13:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:13:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:13:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-21 10:13:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-21 10:13:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:42,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434895827] [2020-09-21 10:13:42,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:42,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:13:42,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379333957] [2020-09-21 10:13:42,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:13:42,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:42,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:13:42,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:13:42,416 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand 7 states. [2020-09-21 10:13:42,921 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:13:44,430 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:44,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:44,819 INFO L93 Difference]: Finished difference Result 299 states and 376 transitions. [2020-09-21 10:13:44,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 10:13:44,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-09-21 10:13:44,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:44,830 INFO L225 Difference]: With dead ends: 299 [2020-09-21 10:13:44,831 INFO L226 Difference]: Without dead ends: 221 [2020-09-21 10:13:44,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:13:44,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-09-21 10:13:44,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 178. [2020-09-21 10:13:44,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-21 10:13:44,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 207 transitions. [2020-09-21 10:13:44,917 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 207 transitions. Word has length 72 [2020-09-21 10:13:44,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:44,917 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 207 transitions. [2020-09-21 10:13:44,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:13:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 207 transitions. [2020-09-21 10:13:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-21 10:13:44,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:44,921 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] [2020-09-21 10:13:44,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:13:44,922 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:44,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:44,922 INFO L82 PathProgramCache]: Analyzing trace with hash 402114491, now seen corresponding path program 1 times [2020-09-21 10:13:44,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:44,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705530216] [2020-09-21 10:13:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,357 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:45,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:13:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:13:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:13:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:13:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:13:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 10:13:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-21 10:13:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:13:45,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705530216] [2020-09-21 10:13:45,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:45,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:13:45,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128312831] [2020-09-21 10:13:45,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:13:45,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:45,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:13:45,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:13:45,508 INFO L87 Difference]: Start difference. First operand 178 states and 207 transitions. Second operand 9 states. [2020-09-21 10:13:46,153 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:13:46,941 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:47,738 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:13:48,150 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:48,675 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:49,006 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:49,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:49,370 INFO L93 Difference]: Finished difference Result 370 states and 457 transitions. [2020-09-21 10:13:49,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:13:49,371 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-09-21 10:13:49,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:49,374 INFO L225 Difference]: With dead ends: 370 [2020-09-21 10:13:49,375 INFO L226 Difference]: Without dead ends: 220 [2020-09-21 10:13:49,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:13:49,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-21 10:13:49,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 177. [2020-09-21 10:13:49,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-21 10:13:49,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 204 transitions. [2020-09-21 10:13:49,412 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 204 transitions. Word has length 86 [2020-09-21 10:13:49,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:49,412 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 204 transitions. [2020-09-21 10:13:49,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:13:49,413 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 204 transitions. [2020-09-21 10:13:49,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-21 10:13:49,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:49,414 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] [2020-09-21 10:13:49,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:13:49,415 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:49,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:49,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1072290173, now seen corresponding path program 1 times [2020-09-21 10:13:49,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:49,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852347219] [2020-09-21 10:13:49,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,797 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:49,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:13:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:13:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:13:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:13:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:13:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-21 10:13:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 10:13:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:49,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852347219] [2020-09-21 10:13:49,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:49,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:13:49,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588697753] [2020-09-21 10:13:49,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:13:49,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:49,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:13:49,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:13:49,957 INFO L87 Difference]: Start difference. First operand 177 states and 204 transitions. Second operand 9 states. [2020-09-21 10:13:51,161 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:51,486 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:13:51,816 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:52,123 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:52,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:52,579 INFO L93 Difference]: Finished difference Result 368 states and 453 transitions. [2020-09-21 10:13:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:13:52,580 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-21 10:13:52,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:52,583 INFO L225 Difference]: With dead ends: 368 [2020-09-21 10:13:52,584 INFO L226 Difference]: Without dead ends: 219 [2020-09-21 10:13:52,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:13:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-09-21 10:13:52,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 182. [2020-09-21 10:13:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-21 10:13:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 209 transitions. [2020-09-21 10:13:52,632 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 209 transitions. Word has length 87 [2020-09-21 10:13:52,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:52,633 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 209 transitions. [2020-09-21 10:13:52,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:13:52,633 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 209 transitions. [2020-09-21 10:13:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-21 10:13:52,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:52,635 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] [2020-09-21 10:13:52,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:13:52,635 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:52,635 INFO L82 PathProgramCache]: Analyzing trace with hash 313913221, now seen corresponding path program 1 times [2020-09-21 10:13:52,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:52,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362009087] [2020-09-21 10:13:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,065 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:53,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:13:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:13:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:13:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:13:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:13:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-21 10:13:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 10:13:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:53,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362009087] [2020-09-21 10:13:53,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:53,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 10:13:53,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384755564] [2020-09-21 10:13:53,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 10:13:53,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:53,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 10:13:53,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:13:53,259 INFO L87 Difference]: Start difference. First operand 182 states and 209 transitions. Second operand 11 states. [2020-09-21 10:13:54,334 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:54,648 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:54,936 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:55,756 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:56,105 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:56,427 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:57,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:57,098 INFO L93 Difference]: Finished difference Result 380 states and 472 transitions. [2020-09-21 10:13:57,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:13:57,099 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-09-21 10:13:57,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:57,101 INFO L225 Difference]: With dead ends: 380 [2020-09-21 10:13:57,101 INFO L226 Difference]: Without dead ends: 226 [2020-09-21 10:13:57,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:13:57,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-21 10:13:57,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 186. [2020-09-21 10:13:57,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-21 10:13:57,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 213 transitions. [2020-09-21 10:13:57,135 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 213 transitions. Word has length 87 [2020-09-21 10:13:57,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:57,136 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 213 transitions. [2020-09-21 10:13:57,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 10:13:57,136 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 213 transitions. [2020-09-21 10:13:57,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-21 10:13:57,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:57,137 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] [2020-09-21 10:13:57,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:13:57,137 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:57,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:57,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1869763706, now seen corresponding path program 1 times [2020-09-21 10:13:57,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:57,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051577344] [2020-09-21 10:13:57,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,518 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:57,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:13:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:13:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:13:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:13:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:13:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-21 10:13:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 10:13:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:57,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051577344] [2020-09-21 10:13:57,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:57,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:13:57,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194207424] [2020-09-21 10:13:57,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:13:57,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:57,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:13:57,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:13:57,716 INFO L87 Difference]: Start difference. First operand 186 states and 213 transitions. Second operand 7 states. [2020-09-21 10:13:58,246 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:13:58,824 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:00,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:00,483 INFO L93 Difference]: Finished difference Result 539 states and 681 transitions. [2020-09-21 10:14:00,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 10:14:00,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-09-21 10:14:00,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:00,488 INFO L225 Difference]: With dead ends: 539 [2020-09-21 10:14:00,488 INFO L226 Difference]: Without dead ends: 381 [2020-09-21 10:14:00,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:14:00,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-09-21 10:14:00,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 343. [2020-09-21 10:14:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-09-21 10:14:00,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 404 transitions. [2020-09-21 10:14:00,570 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 404 transitions. Word has length 87 [2020-09-21 10:14:00,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:00,570 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 404 transitions. [2020-09-21 10:14:00,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:14:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 404 transitions. [2020-09-21 10:14:00,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-21 10:14:00,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:00,572 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] [2020-09-21 10:14:00,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:14:00,573 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:00,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:00,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1799982100, now seen corresponding path program 1 times [2020-09-21 10:14:00,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:00,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359511720] [2020-09-21 10:14:00,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,992 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:00,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:14:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:14:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 10:14:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 10:14:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 10:14:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:14:01,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359511720] [2020-09-21 10:14:01,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:01,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:14:01,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400410423] [2020-09-21 10:14:01,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:14:01,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:01,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:14:01,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:14:01,190 INFO L87 Difference]: Start difference. First operand 343 states and 404 transitions. Second operand 12 states. [2020-09-21 10:14:01,801 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:02,539 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:03,585 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:03,904 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:04,240 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:04,583 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:04,918 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:05,875 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:06,191 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:06,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:06,806 INFO L93 Difference]: Finished difference Result 937 states and 1174 transitions. [2020-09-21 10:14:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-21 10:14:06,807 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-09-21 10:14:06,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:06,812 INFO L225 Difference]: With dead ends: 937 [2020-09-21 10:14:06,813 INFO L226 Difference]: Without dead ends: 687 [2020-09-21 10:14:06,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=296, Invalid=964, Unknown=0, NotChecked=0, Total=1260 [2020-09-21 10:14:06,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2020-09-21 10:14:06,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 580. [2020-09-21 10:14:06,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-21 10:14:06,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 676 transitions. [2020-09-21 10:14:06,917 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 676 transitions. Word has length 91 [2020-09-21 10:14:06,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:06,918 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 676 transitions. [2020-09-21 10:14:06,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:14:06,918 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 676 transitions. [2020-09-21 10:14:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-21 10:14:06,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:06,920 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-21 10:14:06,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:14:06,921 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:06,921 INFO L82 PathProgramCache]: Analyzing trace with hash 476527769, now seen corresponding path program 1 times [2020-09-21 10:14:06,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:06,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647872097] [2020-09-21 10:14:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,292 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:07,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:14:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:14:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:14:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:14:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-21 10:14:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-21 10:14:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-21 10:14:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-09-21 10:14:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-21 10:14:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 10:14:07,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647872097] [2020-09-21 10:14:07,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:14:07,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 10:14:07,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367911487] [2020-09-21 10:14:07,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 10:14:07,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:07,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 10:14:07,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-09-21 10:14:07,596 INFO L87 Difference]: Start difference. First operand 580 states and 676 transitions. Second operand 16 states. [2020-09-21 10:14:08,335 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:08,738 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:09,070 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:09,395 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:10,116 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:10,463 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:11,303 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:11,728 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:12,781 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:13,111 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:13,447 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:13,844 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:14,371 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:14,960 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:15,237 INFO L93 Difference]: Finished difference Result 904 states and 1076 transitions. [2020-09-21 10:14:15,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-21 10:14:15,238 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 134 [2020-09-21 10:14:15,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:15,239 INFO L225 Difference]: With dead ends: 904 [2020-09-21 10:14:15,239 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:14:15,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=424, Invalid=1468, Unknown=0, NotChecked=0, Total=1892 [2020-09-21 10:14:15,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:14:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:14:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:14:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:14:15,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2020-09-21 10:14:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:15,246 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:14:15,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 10:14:15,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:14:15,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:14:15,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:14:15,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:14:15,452 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:15,629 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:15,952 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-09-21 10:14:16,125 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:16,297 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:17,826 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 239 DAG size of output: 227 [2020-09-21 10:14:18,133 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-09-21 10:14:18,301 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:18,459 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:18,636 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:18,813 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:18,992 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:19,173 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:19,336 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:19,496 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:19,666 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:19,844 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-09-21 10:14:20,012 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:20,180 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:20,349 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:20,513 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:20,674 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:20,843 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:21,010 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:21,158 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:21,321 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:21,664 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-09-21 10:14:21,832 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:21,990 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:22,289 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-09-21 10:14:22,451 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:22,749 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:23,083 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-09-21 10:14:23,241 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:23,398 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:23,562 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:23,737 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:23,905 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:24,068 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:24,237 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:24,398 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:24,735 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-09-21 10:14:25,034 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:25,194 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:25,372 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:25,530 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:25,872 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-09-21 10:14:26,032 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:26,200 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:26,359 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:26,525 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:26,687 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:26,984 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-09-21 10:14:27,325 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-09-21 10:14:27,490 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:27,791 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-09-21 10:14:27,949 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:28,120 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:28,454 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-09-21 10:14:28,612 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:28,909 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:29,071 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:29,285 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:29,451 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:29,638 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:29,796 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:29,958 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:30,120 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:30,278 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:30,441 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:30,607 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:30,905 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-09-21 10:14:31,206 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:31,364 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:31,530 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:31,869 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-09-21 10:14:32,031 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:32,193 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:32,504 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-09-21 10:14:32,667 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:33,002 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-09-21 10:14:33,162 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192