/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:08:25,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:08:25,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:08:25,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:08:25,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:08:25,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:08:25,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:08:25,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:08:25,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:08:25,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:08:25,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:08:25,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:08:25,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:08:25,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:08:25,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:08:25,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:08:25,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:08:25,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:08:25,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:08:25,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:08:25,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:08:25,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:08:25,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:08:25,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:08:25,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:08:25,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:08:25,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:08:25,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:08:25,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:08:25,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:08:25,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:08:25,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:08:25,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:08:25,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:08:25,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:08:25,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:08:25,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:08:25,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:08:25,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:08:25,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:08:25,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:08:25,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 02:08:25,258 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:08:25,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:08:25,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:08:25,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:08:25,260 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:08:25,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:08:25,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:08:25,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:08:25,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:08:25,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:08:25,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:08:25,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:08:25,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:08:25,262 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:08:25,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:08:25,262 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:08:25,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:08:25,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:08:25,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:08:25,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:08:25,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:08:25,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:08:25,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:08:25,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:08:25,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:08:25,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:08:25,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:08:25,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:08:25,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:08:25,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:08:25,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:08:25,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:08:25,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:08:25,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:08:25,580 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:08:25,581 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-22 02:08:25,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/156b419c9/b471f5311c324cf5bd37b105c1995026/FLAGa7df7a28d [2020-08-22 02:08:26,162 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:08:26,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-22 02:08:26,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/156b419c9/b471f5311c324cf5bd37b105c1995026/FLAGa7df7a28d [2020-08-22 02:08:26,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/156b419c9/b471f5311c324cf5bd37b105c1995026 [2020-08-22 02:08:26,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:08:26,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:08:26,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:08:26,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:08:26,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:08:26,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:08:26" (1/1) ... [2020-08-22 02:08:26,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71155234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:26, skipping insertion in model container [2020-08-22 02:08:26,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:08:26" (1/1) ... [2020-08-22 02:08:26,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:08:26,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:08:26,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:08:26,899 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:08:27,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:08:27,186 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:08:27,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:27 WrapperNode [2020-08-22 02:08:27,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:08:27,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:08:27,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:08:27,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:08:27,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:27" (1/1) ... [2020-08-22 02:08:27,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:27" (1/1) ... [2020-08-22 02:08:27,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:27" (1/1) ... [2020-08-22 02:08:27,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:27" (1/1) ... [2020-08-22 02:08:27,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:27" (1/1) ... [2020-08-22 02:08:27,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:27" (1/1) ... [2020-08-22 02:08:27,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:27" (1/1) ... [2020-08-22 02:08:27,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:08:27,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:08:27,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:08:27,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:08:27,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:08:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:08:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:08:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:08:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:08:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:08:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:08:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:08:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:08:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:08:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:08:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:08:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:08:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:08:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:08:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:08:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:08:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:08:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:08:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 02:08:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:08:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:08:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:08:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:08:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:08:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:08:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:08:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:08:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:08:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:08:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:08:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:08:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:08:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:08:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 02:08:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 02:08:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 02:08:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:08:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:08:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:08:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:08:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:08:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:08:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:08:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:08:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:08:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:08:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:08:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:08:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:08:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:08:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:08:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:08:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:08:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:08:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:08:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:08:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:08:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:08:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:08:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:08:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:08:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:08:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:08:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:08:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:08:27,383 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:08:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:08:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:08:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 02:08:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:08:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:08:27,385 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:08:27,386 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:08:27,387 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:08:27,387 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:08:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:08:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:08:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:08:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:08:27,389 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:08:27,389 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:08:27,389 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:08:27,390 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:08:27,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 02:08:27,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 02:08:27,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:08:27,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:08:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:08:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 02:08:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:08:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:08:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:08:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:08:27,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:08:27,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:08:27,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:08:28,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:08:28,569 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:08:28,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:08:28 BoogieIcfgContainer [2020-08-22 02:08:28,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:08:28,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:08:28,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:08:28,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:08:28,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:08:26" (1/3) ... [2020-08-22 02:08:28,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e269c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:08:28, skipping insertion in model container [2020-08-22 02:08:28,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:27" (2/3) ... [2020-08-22 02:08:28,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e269c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:08:28, skipping insertion in model container [2020-08-22 02:08:28,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:08:28" (3/3) ... [2020-08-22 02:08:28,582 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product43.cil.c [2020-08-22 02:08:28,592 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:08:28,600 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:08:28,614 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:08:28,639 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:08:28,640 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:08:28,640 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:08:28,640 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:08:28,640 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:08:28,640 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:08:28,641 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:08:28,641 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:08:28,664 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-22 02:08:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 02:08:28,675 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:28,676 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:28,677 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:28,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:28,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1951083148, now seen corresponding path program 1 times [2020-08-22 02:08:28,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:28,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608468451] [2020-08-22 02:08:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:29,340 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:29,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:29,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:29,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:29,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:29,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:29,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:08:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:29,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:29,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:08:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:29,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:08:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:29,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:29,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608468451] [2020-08-22 02:08:29,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:29,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:08:29,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942111855] [2020-08-22 02:08:29,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:08:29,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:29,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:08:29,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:08:29,477 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-22 02:08:30,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:30,579 INFO L93 Difference]: Finished difference Result 308 states and 391 transitions. [2020-08-22 02:08:30,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 02:08:30,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 02:08:30,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:30,595 INFO L225 Difference]: With dead ends: 308 [2020-08-22 02:08:30,595 INFO L226 Difference]: Without dead ends: 170 [2020-08-22 02:08:30,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:08:30,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-22 02:08:30,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 139. [2020-08-22 02:08:30,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-22 02:08:30,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2020-08-22 02:08:30,687 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 59 [2020-08-22 02:08:30,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:30,688 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2020-08-22 02:08:30,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:08:30,688 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2020-08-22 02:08:30,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 02:08:30,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:30,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:30,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:08:30,693 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:30,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:30,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1220523940, now seen corresponding path program 1 times [2020-08-22 02:08:30,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:30,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904714520] [2020-08-22 02:08:30,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:31,056 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:31,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:31,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:31,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:31,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:31,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:31,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:31,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:08:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:31,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:31,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:08:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:31,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:08:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:31,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:31,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904714520] [2020-08-22 02:08:31,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:31,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:08:31,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164619150] [2020-08-22 02:08:31,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:08:31,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:31,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:08:31,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:08:31,116 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand 5 states. [2020-08-22 02:08:31,583 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:32,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:32,491 INFO L93 Difference]: Finished difference Result 244 states and 293 transitions. [2020-08-22 02:08:32,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 02:08:32,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 02:08:32,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:32,495 INFO L225 Difference]: With dead ends: 244 [2020-08-22 02:08:32,495 INFO L226 Difference]: Without dead ends: 160 [2020-08-22 02:08:32,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:08:32,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-22 02:08:32,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 130. [2020-08-22 02:08:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-22 02:08:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-08-22 02:08:32,538 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 60 [2020-08-22 02:08:32,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:32,538 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-08-22 02:08:32,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:08:32,538 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-08-22 02:08:32,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 02:08:32,541 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:32,541 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:32,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:08:32,542 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:32,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:32,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1125066517, now seen corresponding path program 1 times [2020-08-22 02:08:32,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:32,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370934463] [2020-08-22 02:08:32,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,893 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:32,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:33,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:33,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:33,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:08:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:33,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:33,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 02:08:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:33,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:08:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:33,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:33,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370934463] [2020-08-22 02:08:33,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:33,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:08:33,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063240764] [2020-08-22 02:08:33,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:08:33,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:33,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:08:33,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:08:33,069 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-08-22 02:08:33,460 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:33,795 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:34,040 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:34,269 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:35,128 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:36,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:36,693 INFO L93 Difference]: Finished difference Result 435 states and 529 transitions. [2020-08-22 02:08:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 02:08:36,694 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-22 02:08:36,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:36,700 INFO L225 Difference]: With dead ends: 435 [2020-08-22 02:08:36,701 INFO L226 Difference]: Without dead ends: 333 [2020-08-22 02:08:36,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:08:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-22 02:08:36,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 268. [2020-08-22 02:08:36,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-22 02:08:36,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 318 transitions. [2020-08-22 02:08:36,772 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 318 transitions. Word has length 64 [2020-08-22 02:08:36,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:36,773 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 318 transitions. [2020-08-22 02:08:36,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:08:36,773 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 318 transitions. [2020-08-22 02:08:36,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 02:08:36,775 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:36,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:36,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:08:36,776 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:36,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:36,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1836372268, now seen corresponding path program 1 times [2020-08-22 02:08:36,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:36,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608201264] [2020-08-22 02:08:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:37,075 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:37,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:37,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:37,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:37,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:37,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:08:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:37,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:08:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:37,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:37,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:08:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:37,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 02:08:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 02:08:37,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608201264] [2020-08-22 02:08:37,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:37,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:08:37,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375117345] [2020-08-22 02:08:37,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:08:37,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:37,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:08:37,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:08:37,170 INFO L87 Difference]: Start difference. First operand 268 states and 318 transitions. Second operand 9 states. [2020-08-22 02:08:37,550 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:38,242 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:39,107 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:39,354 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:39,666 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:39,940 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:40,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:40,414 INFO L93 Difference]: Finished difference Result 679 states and 862 transitions. [2020-08-22 02:08:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:08:40,414 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-22 02:08:40,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:40,421 INFO L225 Difference]: With dead ends: 679 [2020-08-22 02:08:40,421 INFO L226 Difference]: Without dead ends: 439 [2020-08-22 02:08:40,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:08:40,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-22 02:08:40,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 379. [2020-08-22 02:08:40,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-22 02:08:40,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 451 transitions. [2020-08-22 02:08:40,512 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 451 transitions. Word has length 70 [2020-08-22 02:08:40,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:40,513 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 451 transitions. [2020-08-22 02:08:40,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:08:40,513 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 451 transitions. [2020-08-22 02:08:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-22 02:08:40,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:40,516 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:40,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:08:40,516 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:40,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:40,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1329110427, now seen corresponding path program 1 times [2020-08-22 02:08:40,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:40,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093280543] [2020-08-22 02:08:40,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,849 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:40,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:08:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:08:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:41,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:41,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:08:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:41,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:41,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:41,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:41,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 02:08:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:41,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 02:08:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:41,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093280543] [2020-08-22 02:08:41,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:41,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:08:41,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717884419] [2020-08-22 02:08:41,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:08:41,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:41,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:08:41,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:08:41,055 INFO L87 Difference]: Start difference. First operand 379 states and 451 transitions. Second operand 9 states. [2020-08-22 02:08:41,465 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:42,394 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:42,628 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:08:42,915 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:43,190 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:44,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:44,527 INFO L93 Difference]: Finished difference Result 1185 states and 1563 transitions. [2020-08-22 02:08:44,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:08:44,528 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-22 02:08:44,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:44,537 INFO L225 Difference]: With dead ends: 1185 [2020-08-22 02:08:44,537 INFO L226 Difference]: Without dead ends: 834 [2020-08-22 02:08:44,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:08:44,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-08-22 02:08:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 717. [2020-08-22 02:08:44,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-08-22 02:08:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 858 transitions. [2020-08-22 02:08:44,724 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 858 transitions. Word has length 102 [2020-08-22 02:08:44,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:44,725 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 858 transitions. [2020-08-22 02:08:44,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:08:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 858 transitions. [2020-08-22 02:08:44,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-22 02:08:44,729 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:44,730 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:44,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:08:44,730 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:44,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:44,731 INFO L82 PathProgramCache]: Analyzing trace with hash 359529404, now seen corresponding path program 1 times [2020-08-22 02:08:44,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:44,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179763730] [2020-08-22 02:08:44,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,003 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:45,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:08:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:08:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:08:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 02:08:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 02:08:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:45,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179763730] [2020-08-22 02:08:45,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:45,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:08:45,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571173492] [2020-08-22 02:08:45,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:08:45,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:45,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:08:45,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:08:45,168 INFO L87 Difference]: Start difference. First operand 717 states and 858 transitions. Second operand 9 states. [2020-08-22 02:08:46,194 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:46,442 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:08:46,693 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:46,933 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:47,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:47,574 INFO L93 Difference]: Finished difference Result 1536 states and 1964 transitions. [2020-08-22 02:08:47,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:08:47,575 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-22 02:08:47,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:47,583 INFO L225 Difference]: With dead ends: 1536 [2020-08-22 02:08:47,585 INFO L226 Difference]: Without dead ends: 847 [2020-08-22 02:08:47,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:08:47,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-08-22 02:08:47,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 737. [2020-08-22 02:08:47,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-08-22 02:08:47,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 878 transitions. [2020-08-22 02:08:47,793 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 878 transitions. Word has length 102 [2020-08-22 02:08:47,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:47,795 INFO L479 AbstractCegarLoop]: Abstraction has 737 states and 878 transitions. [2020-08-22 02:08:47,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:08:47,795 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 878 transitions. [2020-08-22 02:08:47,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-22 02:08:47,801 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:47,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:47,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:08:47,804 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:47,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1689858438, now seen corresponding path program 1 times [2020-08-22 02:08:47,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:47,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914479129] [2020-08-22 02:08:47,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,088 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:48,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:08:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:08:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:08:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 02:08:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 02:08:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:48,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914479129] [2020-08-22 02:08:48,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:48,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:08:48,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799673840] [2020-08-22 02:08:48,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:08:48,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:48,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:08:48,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:08:48,271 INFO L87 Difference]: Start difference. First operand 737 states and 878 transitions. Second operand 11 states. [2020-08-22 02:08:48,969 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:49,200 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:49,442 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:50,167 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:50,423 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:50,663 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:51,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:51,530 INFO L93 Difference]: Finished difference Result 1360 states and 1702 transitions. [2020-08-22 02:08:51,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:08:51,531 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-08-22 02:08:51,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:51,536 INFO L225 Difference]: With dead ends: 1360 [2020-08-22 02:08:51,537 INFO L226 Difference]: Without dead ends: 651 [2020-08-22 02:08:51,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:08:51,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-08-22 02:08:51,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 578. [2020-08-22 02:08:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-08-22 02:08:51,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 674 transitions. [2020-08-22 02:08:51,672 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 674 transitions. Word has length 102 [2020-08-22 02:08:51,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:51,672 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 674 transitions. [2020-08-22 02:08:51,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:08:51,673 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 674 transitions. [2020-08-22 02:08:51,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-22 02:08:51,677 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:51,677 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:51,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:08:51,677 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:51,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:51,678 INFO L82 PathProgramCache]: Analyzing trace with hash -764679949, now seen corresponding path program 1 times [2020-08-22 02:08:51,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:51,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625106324] [2020-08-22 02:08:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,043 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:52,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:08:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 02:08:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:08:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:08:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 02:08:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 02:08:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:52,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625106324] [2020-08-22 02:08:52,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:52,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:08:52,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808244877] [2020-08-22 02:08:52,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:08:52,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:52,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:08:52,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:08:52,212 INFO L87 Difference]: Start difference. First operand 578 states and 674 transitions. Second operand 12 states. [2020-08-22 02:08:52,697 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:53,326 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:53,976 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:54,303 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:54,550 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:08:54,832 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:55,083 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:56,428 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:56,707 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:57,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:57,253 INFO L93 Difference]: Finished difference Result 1691 states and 2129 transitions. [2020-08-22 02:08:57,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 02:08:57,254 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 106 [2020-08-22 02:08:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:57,261 INFO L225 Difference]: With dead ends: 1691 [2020-08-22 02:08:57,261 INFO L226 Difference]: Without dead ends: 1313 [2020-08-22 02:08:57,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 02:08:57,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-08-22 02:08:57,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1197. [2020-08-22 02:08:57,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-08-22 02:08:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1399 transitions. [2020-08-22 02:08:57,451 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1399 transitions. Word has length 106 [2020-08-22 02:08:57,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:57,452 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1399 transitions. [2020-08-22 02:08:57,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:08:57,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1399 transitions. [2020-08-22 02:08:57,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 02:08:57,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:57,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:57,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:08:57,456 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:57,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:57,457 INFO L82 PathProgramCache]: Analyzing trace with hash -60868023, now seen corresponding path program 1 times [2020-08-22 02:08:57,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:57,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309813263] [2020-08-22 02:08:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,878 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:57,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:08:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:08:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:08:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:08:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:08:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-22 02:08:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 02:08:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 02:08:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 02:08:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 02:08:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 02:08:58,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309813263] [2020-08-22 02:08:58,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:08:58,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 02:08:58,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909923721] [2020-08-22 02:08:58,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 02:08:58,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:58,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 02:08:58,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:08:58,225 INFO L87 Difference]: Start difference. First operand 1197 states and 1399 transitions. Second operand 16 states. [2020-08-22 02:08:59,055 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:08:59,434 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:08:59,692 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:08:59,961 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:09:00,574 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:00,897 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:01,251 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:09:01,522 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:09:02,579 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:03,037 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:03,354 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:03,679 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:04,148 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:09:04,676 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:09:04,926 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:05,199 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:05,482 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:05,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:05,961 INFO L93 Difference]: Finished difference Result 2225 states and 2688 transitions. [2020-08-22 02:09:05,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-22 02:09:05,962 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 149 [2020-08-22 02:09:05,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:05,970 INFO L225 Difference]: With dead ends: 2225 [2020-08-22 02:09:05,970 INFO L226 Difference]: Without dead ends: 1222 [2020-08-22 02:09:05,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-22 02:09:05,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-08-22 02:09:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1102. [2020-08-22 02:09:06,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-22 02:09:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1268 transitions. [2020-08-22 02:09:06,171 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1268 transitions. Word has length 149 [2020-08-22 02:09:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:06,171 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1268 transitions. [2020-08-22 02:09:06,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 02:09:06,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1268 transitions. [2020-08-22 02:09:06,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-08-22 02:09:06,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:06,178 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 02:09:06,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:09:06,179 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:06,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:06,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1576976523, now seen corresponding path program 1 times [2020-08-22 02:09:06,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:06,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349659962] [2020-08-22 02:09:06,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,566 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:06,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:09:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:09:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:09:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:09:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 02:09:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:09:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-22 02:09:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:09:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 02:09:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 02:09:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:09:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 02:09:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 02:09:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-22 02:09:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 02:09:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 104 proven. 48 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-08-22 02:09:07,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349659962] [2020-08-22 02:09:07,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:09:07,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 02:09:07,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450145501] [2020-08-22 02:09:07,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 02:09:07,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:07,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 02:09:07,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:09:07,070 INFO L87 Difference]: Start difference. First operand 1102 states and 1268 transitions. Second operand 16 states. [2020-08-22 02:09:08,486 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:08,760 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:09,000 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:09,235 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:10,403 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:12,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:12,226 INFO L93 Difference]: Finished difference Result 3031 states and 3632 transitions. [2020-08-22 02:09:12,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 02:09:12,227 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 302 [2020-08-22 02:09:12,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:12,238 INFO L225 Difference]: With dead ends: 3031 [2020-08-22 02:09:12,238 INFO L226 Difference]: Without dead ends: 1752 [2020-08-22 02:09:12,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 02:09:12,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-08-22 02:09:12,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1430. [2020-08-22 02:09:12,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-08-22 02:09:12,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1674 transitions. [2020-08-22 02:09:12,578 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1674 transitions. Word has length 302 [2020-08-22 02:09:12,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:12,579 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 1674 transitions. [2020-08-22 02:09:12,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 02:09:12,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1674 transitions. [2020-08-22 02:09:12,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-22 02:09:12,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:12,588 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:09:12,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:09:12,588 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:12,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1865964208, now seen corresponding path program 1 times [2020-08-22 02:09:12,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:12,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985665549] [2020-08-22 02:09:12,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:12,937 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:12,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:12,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:12,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:12,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:12,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:12,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:09:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:09:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:09:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:09:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 02:09:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:09:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:09:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-22 02:09:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:09:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-22 02:09:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 02:09:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:09:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-22 02:09:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 02:09:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 02:09:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-22 02:09:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:13,294 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 111 proven. 44 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-08-22 02:09:13,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985665549] [2020-08-22 02:09:13,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:09:13,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 02:09:13,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918928905] [2020-08-22 02:09:13,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 02:09:13,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:13,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 02:09:13,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-22 02:09:13,297 INFO L87 Difference]: Start difference. First operand 1430 states and 1674 transitions. Second operand 17 states. [2020-08-22 02:09:13,828 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:14,134 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:14,384 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:14,618 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:15,288 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:16,334 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:16,603 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:17,110 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:17,863 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:18,509 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:18,778 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:19,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:19,640 INFO L93 Difference]: Finished difference Result 2555 states and 3056 transitions. [2020-08-22 02:09:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-22 02:09:19,641 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 308 [2020-08-22 02:09:19,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:19,649 INFO L225 Difference]: With dead ends: 2555 [2020-08-22 02:09:19,649 INFO L226 Difference]: Without dead ends: 1457 [2020-08-22 02:09:19,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2020-08-22 02:09:19,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-08-22 02:09:19,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1403. [2020-08-22 02:09:19,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2020-08-22 02:09:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1626 transitions. [2020-08-22 02:09:19,910 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1626 transitions. Word has length 308 [2020-08-22 02:09:19,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:19,910 INFO L479 AbstractCegarLoop]: Abstraction has 1403 states and 1626 transitions. [2020-08-22 02:09:19,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 02:09:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1626 transitions. [2020-08-22 02:09:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-22 02:09:19,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:19,919 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:09:19,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:09:19,919 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:19,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:19,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2055130084, now seen corresponding path program 1 times [2020-08-22 02:09:19,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:19,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541192263] [2020-08-22 02:09:19,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,255 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:20,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:09:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:09:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:09:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:09:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 02:09:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:09:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:09:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 02:09:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:09:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-22 02:09:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-08-22 02:09:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:09:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-22 02:09:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-22 02:09:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-22 02:09:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-22 02:09:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-08-22 02:09:20,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541192263] [2020-08-22 02:09:20,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:09:20,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 02:09:20,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942771449] [2020-08-22 02:09:20,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:09:20,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:20,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:09:20,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:09:20,494 INFO L87 Difference]: Start difference. First operand 1403 states and 1626 transitions. Second operand 9 states. [2020-08-22 02:09:21,287 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:22,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:22,607 INFO L93 Difference]: Finished difference Result 1737 states and 2054 transitions. [2020-08-22 02:09:22,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 02:09:22,608 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 309 [2020-08-22 02:09:22,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:22,609 INFO L225 Difference]: With dead ends: 1737 [2020-08-22 02:09:22,609 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 02:09:22,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-08-22 02:09:22,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 02:09:22,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 02:09:22,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 02:09:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 02:09:22,615 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 309 [2020-08-22 02:09:22,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:22,615 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 02:09:22,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:09:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 02:09:22,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 02:09:22,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 02:09:22,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 02:09:22,759 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194