/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_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:38:56,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:38:56,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:38:56,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:38:56,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:38:56,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:38:56,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:38:56,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:38:56,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:38:56,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:38:56,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:38:56,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:38:56,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:38:56,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:38:56,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:38:56,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:38:56,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:38:56,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:38:56,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:38:56,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:38:56,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:38:56,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:38:56,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:38:56,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:38:56,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:38:56,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:38:56,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:38:56,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:38:56,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:38:56,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:38:56,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:38:56,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:38:56,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:38:56,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:38:56,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:38:56,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:38:56,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:38:56,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:38:56,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:38:56,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:38:56,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:38:56,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-27 21:38:56,205 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:38:56,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:38:56,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:38:56,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:38:56,208 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:38:56,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:38:56,209 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:38:56,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:38:56,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:38:56,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:38:56,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:38:56,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:38:56,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:38:56,211 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:38:56,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:38:56,212 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:38:56,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:38:56,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:38:56,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:38:56,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:38:56,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:38:56,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:38:56,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:38:56,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:38:56,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:38:56,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:38:56,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:38:56,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:38:56,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:38:56,215 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 [2020-08-27 21:38:56,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:38:56,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:38:56,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:38:56,671 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:38:56,671 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:38:56,673 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-27 21:38:56,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/beef5e0e4/af3e004c7a6e4b2f968fd688286489d1/FLAG1f3eb4eda [2020-08-27 21:38:57,366 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:38:57,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-27 21:38:57,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/beef5e0e4/af3e004c7a6e4b2f968fd688286489d1/FLAG1f3eb4eda [2020-08-27 21:38:57,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/beef5e0e4/af3e004c7a6e4b2f968fd688286489d1 [2020-08-27 21:38:57,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:38:57,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:38:57,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:38:57,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:38:57,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:38:57,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:38:57" (1/1) ... [2020-08-27 21:38:57,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277364e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:57, skipping insertion in model container [2020-08-27 21:38:57,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:38:57" (1/1) ... [2020-08-27 21:38:57,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:38:57,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:38:58,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:38:58,378 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:38:58,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:38:58,512 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:38:58,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:58 WrapperNode [2020-08-27 21:38:58,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:38:58,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:38:58,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:38:58,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:38:58,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:58" (1/1) ... [2020-08-27 21:38:58,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:58" (1/1) ... [2020-08-27 21:38:58,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:58" (1/1) ... [2020-08-27 21:38:58,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:58" (1/1) ... [2020-08-27 21:38:58,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:58" (1/1) ... [2020-08-27 21:38:58,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:58" (1/1) ... [2020-08-27 21:38:58,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:58" (1/1) ... [2020-08-27 21:38:58,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:38:58,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:38:58,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:38:58,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:38:58,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:38:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:38:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:38:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:38:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:38:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:38:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:38:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:38:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:38:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:38:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:38:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-27 21:38:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:38:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:38:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:38:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:38:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:38:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:38:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-27 21:38:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:38:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:38:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:38:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:38:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:38:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:38:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:38:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:38:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:38:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:38:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:38:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:38:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:38:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:38:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-27 21:38:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:38:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:38:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:38:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:38:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:38:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:38:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:38:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-27 21:38:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-27 21:38:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:38:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:38:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:38:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:38:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:38:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:38:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:38:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:38:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:38:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:38:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-27 21:38:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:38:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:38:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:38:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:38:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:38:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:38:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:38:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:38:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:38:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:38:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:38:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:38:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:38:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:38:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-27 21:38:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:38:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:38:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:38:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:38:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:38:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:38:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:38:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:38:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:38:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:38:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:38:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:38:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:38:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:38:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:38:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:38:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:38:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-27 21:38:58,751 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:38:58,751 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:38:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:38:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:38:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:38:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:38:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-27 21:38:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-27 21:38:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:38:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:38:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:38:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:38:59,879 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:38:59,880 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:38:59,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:38:59 BoogieIcfgContainer [2020-08-27 21:38:59,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:38:59,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:38:59,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:38:59,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:38:59,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:38:57" (1/3) ... [2020-08-27 21:38:59,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bec391d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:38:59, skipping insertion in model container [2020-08-27 21:38:59,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:58" (2/3) ... [2020-08-27 21:38:59,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bec391d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:38:59, skipping insertion in model container [2020-08-27 21:38:59,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:38:59" (3/3) ... [2020-08-27 21:38:59,903 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-08-27 21:38:59,915 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:38:59,928 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:38:59,950 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:38:59,985 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:38:59,985 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:38:59,985 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:38:59,985 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:38:59,985 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:38:59,986 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:38:59,986 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:38:59,986 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:39:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-27 21:39:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-27 21:39:00,027 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:00,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:00,029 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:00,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:00,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-08-27 21:39:00,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:00,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378061488] [2020-08-27 21:39:00,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:00,753 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:00,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:00,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:00,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:00,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:00,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:00,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:39:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:00,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:39:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:00,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:39:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:00,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378061488] [2020-08-27 21:39:00,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:00,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:39:00,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771608814] [2020-08-27 21:39:00,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:39:00,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:00,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:39:00,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:39:00,953 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-08-27 21:39:02,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:02,278 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-08-27 21:39:02,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:39:02,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-27 21:39:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:02,304 INFO L225 Difference]: With dead ends: 350 [2020-08-27 21:39:02,304 INFO L226 Difference]: Without dead ends: 188 [2020-08-27 21:39:02,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:39:02,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-27 21:39:02,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-27 21:39:02,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-27 21:39:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-08-27 21:39:02,534 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-08-27 21:39:02,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:02,534 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-08-27 21:39:02,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:39:02,535 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-08-27 21:39:02,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-27 21:39:02,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:02,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:02,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:39:02,549 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:02,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:02,549 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-08-27 21:39:02,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:02,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906797096] [2020-08-27 21:39:02,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:02,938 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:02,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:02,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:02,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:02,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:02,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:02,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:39:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:02,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:39:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:02,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:39:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:03,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:03,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906797096] [2020-08-27 21:39:03,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:03,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:39:03,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353037103] [2020-08-27 21:39:03,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:39:03,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:03,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:39:03,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:39:03,004 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-08-27 21:39:03,451 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:04,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:04,555 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-27 21:39:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 21:39:04,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-27 21:39:04,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:04,560 INFO L225 Difference]: With dead ends: 279 [2020-08-27 21:39:04,560 INFO L226 Difference]: Without dead ends: 172 [2020-08-27 21:39:04,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:39:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-27 21:39:04,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-27 21:39:04,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-27 21:39:04,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-27 21:39:04,620 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-08-27 21:39:04,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:04,621 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-27 21:39:04,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:39:04,621 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-27 21:39:04,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-27 21:39:04,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:04,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:04,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:39:04,624 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:04,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:04,624 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-08-27 21:39:04,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:04,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031542436] [2020-08-27 21:39:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:05,035 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:05,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:05,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:05,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:05,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:05,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:05,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:39:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:05,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:39:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:05,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:39:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:05,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031542436] [2020-08-27 21:39:05,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:05,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:39:05,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266275745] [2020-08-27 21:39:05,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:39:05,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:05,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:39:05,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:39:05,199 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-08-27 21:39:05,615 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:05,976 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:06,297 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:06,596 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:08,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:08,310 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-08-27 21:39:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-27 21:39:08,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-27 21:39:08,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:08,317 INFO L225 Difference]: With dead ends: 292 [2020-08-27 21:39:08,317 INFO L226 Difference]: Without dead ends: 172 [2020-08-27 21:39:08,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:39:08,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-27 21:39:08,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-27 21:39:08,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-27 21:39:08,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-27 21:39:08,360 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-08-27 21:39:08,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:08,361 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-27 21:39:08,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:39:08,361 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-27 21:39:08,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-27 21:39:08,362 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:08,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:08,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:39:08,363 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:08,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:08,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-08-27 21:39:08,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:08,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097501005] [2020-08-27 21:39:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,758 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:08,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:39:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 21:39:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-27 21:39:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-27 21:39:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:08,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097501005] [2020-08-27 21:39:08,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:08,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:39:08,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824447010] [2020-08-27 21:39:08,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:39:08,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:08,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:39:08,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:39:08,887 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-08-27 21:39:09,268 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:10,616 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:11,599 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-08-27 21:39:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:39:11,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-08-27 21:39:11,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:11,604 INFO L225 Difference]: With dead ends: 407 [2020-08-27 21:39:11,604 INFO L226 Difference]: Without dead ends: 287 [2020-08-27 21:39:11,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:39:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-27 21:39:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-08-27 21:39:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-27 21:39:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-08-27 21:39:11,659 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-08-27 21:39:11,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:11,659 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-08-27 21:39:11,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:39:11,660 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-08-27 21:39:11,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-27 21:39:11,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:11,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:11,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:39:11,662 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:11,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:11,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-08-27 21:39:11,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:11,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246867324] [2020-08-27 21:39:11,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,052 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:12,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:39:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 21:39:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-27 21:39:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-27 21:39:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:12,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246867324] [2020-08-27 21:39:12,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:12,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:39:12,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409965557] [2020-08-27 21:39:12,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:39:12,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:12,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:39:12,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:39:12,246 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-08-27 21:39:12,636 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:14,202 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:14,585 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:14,918 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:15,223 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:16,286 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-08-27 21:39:16,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-27 21:39:16,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-27 21:39:16,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:16,290 INFO L225 Difference]: With dead ends: 641 [2020-08-27 21:39:16,291 INFO L226 Difference]: Without dead ends: 421 [2020-08-27 21:39:16,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:39:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-27 21:39:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-08-27 21:39:16,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-27 21:39:16,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-08-27 21:39:16,376 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-08-27 21:39:16,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:16,377 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-08-27 21:39:16,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:39:16,377 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-08-27 21:39:16,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-27 21:39:16,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:16,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:16,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:39:16,380 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:16,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:16,380 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-08-27 21:39:16,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:16,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065843846] [2020-08-27 21:39:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,739 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:16,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:39:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:39:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-27 21:39:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-27 21:39:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:16,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065843846] [2020-08-27 21:39:16,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:16,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:39:16,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785281709] [2020-08-27 21:39:16,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:39:16,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:16,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:39:16,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:39:16,931 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-08-27 21:39:17,350 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:17,997 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:19,866 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:22,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:22,443 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-08-27 21:39:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-27 21:39:22,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-27 21:39:22,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:22,451 INFO L225 Difference]: With dead ends: 980 [2020-08-27 21:39:22,452 INFO L226 Difference]: Without dead ends: 749 [2020-08-27 21:39:22,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-27 21:39:22,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-27 21:39:22,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-08-27 21:39:22,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-27 21:39:22,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-08-27 21:39:22,604 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-08-27 21:39:22,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:22,604 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-08-27 21:39:22,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:39:22,605 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-08-27 21:39:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-27 21:39:22,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:22,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:22,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:39:22,607 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:22,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:22,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-08-27 21:39:22,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:22,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064218358] [2020-08-27 21:39:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,932 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:22,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:39:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:22,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:23,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:23,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:23,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:39:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:23,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-27 21:39:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:23,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-27 21:39:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:23,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064218358] [2020-08-27 21:39:23,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:23,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:39:23,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986019898] [2020-08-27 21:39:23,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:39:23,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:23,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:39:23,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:39:23,087 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-08-27 21:39:24,036 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:24,320 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:24,637 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:26,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:26,109 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-08-27 21:39:26,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 21:39:26,110 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-27 21:39:26,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:26,116 INFO L225 Difference]: With dead ends: 1250 [2020-08-27 21:39:26,116 INFO L226 Difference]: Without dead ends: 723 [2020-08-27 21:39:26,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:39:26,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-08-27 21:39:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-08-27 21:39:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-27 21:39:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-08-27 21:39:26,315 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-08-27 21:39:26,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:26,316 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-08-27 21:39:26,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:39:26,316 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-08-27 21:39:26,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-27 21:39:26,321 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:26,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:26,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:39:26,322 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:26,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:26,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-08-27 21:39:26,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:26,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510472901] [2020-08-27 21:39:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,658 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:26,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:39:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:39:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-27 21:39:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-27 21:39:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:26,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510472901] [2020-08-27 21:39:26,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:26,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:39:26,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186780708] [2020-08-27 21:39:26,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:39:26,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:26,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:39:26,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:39:26,842 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-08-27 21:39:27,450 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:27,774 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:28,070 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:28,889 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:29,199 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:39:29,540 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:29,841 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:31,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:31,243 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-08-27 21:39:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-27 21:39:31,244 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-27 21:39:31,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:31,249 INFO L225 Difference]: With dead ends: 1343 [2020-08-27 21:39:31,249 INFO L226 Difference]: Without dead ends: 689 [2020-08-27 21:39:31,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-27 21:39:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-08-27 21:39:31,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-08-27 21:39:31,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-27 21:39:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-08-27 21:39:31,369 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-08-27 21:39:31,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:31,369 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-08-27 21:39:31,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:39:31,369 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-08-27 21:39:31,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-27 21:39:31,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:31,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:31,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:39:31,373 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:31,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:31,374 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-08-27 21:39:31,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:31,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990398215] [2020-08-27 21:39:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,709 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:31,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:39:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-27 21:39:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:39:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-27 21:39:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:31,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990398215] [2020-08-27 21:39:31,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:31,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-27 21:39:31,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627234823] [2020-08-27 21:39:31,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 21:39:31,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:31,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 21:39:31,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:39:31,887 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-08-27 21:39:32,451 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:32,784 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:33,076 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:34,326 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:35,099 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:35,534 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:35,885 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:36,770 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:37,160 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:37,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:37,845 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-08-27 21:39:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-27 21:39:37,846 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-08-27 21:39:37,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:37,852 INFO L225 Difference]: With dead ends: 1307 [2020-08-27 21:39:37,852 INFO L226 Difference]: Without dead ends: 682 [2020-08-27 21:39:37,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-27 21:39:37,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-27 21:39:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-08-27 21:39:37,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-27 21:39:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-08-27 21:39:38,002 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-08-27 21:39:38,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:38,004 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-08-27 21:39:38,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-27 21:39:38,004 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-08-27 21:39:38,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-27 21:39:38,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:38,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:38,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:39:38,011 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:38,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:38,011 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-08-27 21:39:38,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:38,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283473532] [2020-08-27 21:39:38,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,315 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:38,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:39:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:39:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-27 21:39:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-27 21:39:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:39:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:39:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-27 21:39:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-27 21:39:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-27 21:39:38,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283473532] [2020-08-27 21:39:38,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:39:38,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-27 21:39:38,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271106495] [2020-08-27 21:39:38,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:39:38,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:38,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:39:38,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:39:38,600 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-08-27 21:39:39,667 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:39,993 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:39:40,316 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:40,629 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:41,831 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-08-27 21:39:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:39:41,832 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-08-27 21:39:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:41,837 INFO L225 Difference]: With dead ends: 1216 [2020-08-27 21:39:41,837 INFO L226 Difference]: Without dead ends: 670 [2020-08-27 21:39:41,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:39:41,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-27 21:39:41,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-08-27 21:39:41,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-27 21:39:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-08-27 21:39:41,977 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-08-27 21:39:41,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:41,977 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-08-27 21:39:41,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:39:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-08-27 21:39:41,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-27 21:39:41,980 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:41,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:41,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 21:39:41,981 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:41,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:41,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-08-27 21:39:41,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:41,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949034972] [2020-08-27 21:39:41,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,322 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:42,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:39:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:39:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-27 21:39:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-27 21:39:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:39:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:39:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-27 21:39:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-27 21:39:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-27 21:39:42,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949034972] [2020-08-27 21:39:42,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:39:42,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-27 21:39:42,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733918018] [2020-08-27 21:39:42,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:39:42,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:42,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:39:42,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:39:42,532 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-08-27 21:39:43,290 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:43,649 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:43,908 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:44,692 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:45,014 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:45,320 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:46,721 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-08-27 21:39:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:39:46,722 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-08-27 21:39:46,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:46,726 INFO L225 Difference]: With dead ends: 1124 [2020-08-27 21:39:46,726 INFO L226 Difference]: Without dead ends: 573 [2020-08-27 21:39:46,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:39:46,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-27 21:39:46,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-08-27 21:39:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-27 21:39:46,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-08-27 21:39:46,849 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-08-27 21:39:46,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:46,850 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-08-27 21:39:46,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:39:46,850 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-08-27 21:39:46,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-27 21:39:46,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:46,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:46,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-27 21:39:46,855 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:46,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:46,855 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-08-27 21:39:46,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:46,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008123082] [2020-08-27 21:39:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,213 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:47,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:39:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:39:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-27 21:39:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-27 21:39:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:39:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-27 21:39:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:39:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-27 21:39:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:47,486 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-27 21:39:47,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008123082] [2020-08-27 21:39:47,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:39:47,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-27 21:39:47,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015728321] [2020-08-27 21:39:47,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:39:47,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:47,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:39:47,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:39:47,489 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-08-27 21:39:48,114 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:48,850 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:50,004 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:50,620 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-27 21:39:51,205 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-27 21:39:51,489 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:39:53,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:53,375 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-08-27 21:39:53,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-27 21:39:53,380 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-27 21:39:53,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:53,387 INFO L225 Difference]: With dead ends: 1637 [2020-08-27 21:39:53,387 INFO L226 Difference]: Without dead ends: 1109 [2020-08-27 21:39:53,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-27 21:39:53,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-08-27 21:39:53,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-08-27 21:39:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-08-27 21:39:53,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-08-27 21:39:53,568 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-08-27 21:39:53,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:53,568 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-08-27 21:39:53,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:39:53,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-08-27 21:39:53,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-27 21:39:53,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:53,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:53,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-27 21:39:53,572 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:53,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:53,572 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-08-27 21:39:53,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:53,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553690700] [2020-08-27 21:39:53,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:53,924 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:53,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:53,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:53,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:53,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:53,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:53,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:39:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:39:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:39:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:39:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-27 21:39:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:39:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:39:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-27 21:39:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-27 21:39:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-27 21:39:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-27 21:39:54,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553690700] [2020-08-27 21:39:54,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:39:54,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-27 21:39:54,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782103011] [2020-08-27 21:39:54,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-27 21:39:54,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:54,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-27 21:39:54,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:39:54,165 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states.