/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:22:06,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:22:06,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:22:07,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:22:07,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:22:07,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:22:07,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:22:07,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:22:07,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:22:07,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:22:07,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:22:07,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:22:07,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:22:07,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:22:07,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:22:07,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:22:07,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:22:07,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:22:07,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:22:07,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:22:07,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:22:07,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:22:07,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:22:07,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:22:07,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:22:07,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:22:07,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:22:07,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:22:07,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:22:07,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:22:07,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:22:07,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:22:07,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:22:07,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:22:07,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:22:07,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:22:07,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:22:07,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:22:07,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:22:07,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:22:07,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:22:07,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:22:07,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:22:07,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:22:07,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:22:07,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:22:07,137 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:22:07,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:22:07,138 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:22:07,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:22:07,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:22:07,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:22:07,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:22:07,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:22:07,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:22:07,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:22:07,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:22:07,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:22:07,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:22:07,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:22:07,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:22:07,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:22:07,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:22:07,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:22:07,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:22:07,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:22:07,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:22:07,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:22:07,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:22:07,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:22:07,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:22:07,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:22:07,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:22:07,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:22:07,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:22:07,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:22:07,512 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:22:07,513 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2020-08-18 23:22:07,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cb62ccf7/cb8e2c308c6b4900b31a59bf60385c2d/FLAGadb4378d6 [2020-08-18 23:22:08,089 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:22:08,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2020-08-18 23:22:08,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cb62ccf7/cb8e2c308c6b4900b31a59bf60385c2d/FLAGadb4378d6 [2020-08-18 23:22:08,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cb62ccf7/cb8e2c308c6b4900b31a59bf60385c2d [2020-08-18 23:22:08,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:22:08,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:22:08,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:22:08,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:22:08,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:22:08,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:22:08" (1/1) ... [2020-08-18 23:22:08,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:08, skipping insertion in model container [2020-08-18 23:22:08,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:22:08" (1/1) ... [2020-08-18 23:22:08,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:22:08,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:22:08,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:22:08,946 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:22:09,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:22:09,099 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:22:09,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09 WrapperNode [2020-08-18 23:22:09,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:22:09,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:22:09,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:22:09,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:22:09,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... [2020-08-18 23:22:09,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... [2020-08-18 23:22:09,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... [2020-08-18 23:22:09,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... [2020-08-18 23:22:09,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... [2020-08-18 23:22:09,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... [2020-08-18 23:22:09,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... [2020-08-18 23:22:09,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:22:09,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:22:09,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:22:09,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:22:09,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:22:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:22:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:22:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 23:22:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 23:22:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 23:22:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 23:22:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 23:22:09,300 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 23:22:09,300 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 23:22:09,300 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 23:22:09,300 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 23:22:09,300 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 23:22:09,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 23:22:09,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 23:22:09,301 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 23:22:09,301 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 23:22:09,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 23:22:09,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 23:22:09,302 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 23:22:09,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 23:22:09,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 23:22:09,302 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 23:22:09,303 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 23:22:09,303 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 23:22:09,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 23:22:09,303 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 23:22:09,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 23:22:09,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 23:22:09,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 23:22:09,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 23:22:09,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 23:22:09,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 23:22:09,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 23:22:09,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 23:22:09,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 23:22:09,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 23:22:09,305 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 23:22:09,305 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 23:22:09,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 23:22:09,306 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 23:22:09,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:22:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:22:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:22:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 23:22:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 23:22:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 23:22:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 23:22:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 23:22:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 23:22:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 23:22:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 23:22:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 23:22:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 23:22:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 23:22:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 23:22:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 23:22:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 23:22:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 23:22:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 23:22:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 23:22:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 23:22:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 23:22:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 23:22:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 23:22:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 23:22:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 23:22:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 23:22:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 23:22:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 23:22:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 23:22:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 23:22:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:22:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 23:22:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 23:22:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:22:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:22:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 23:22:09,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:22:09,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:22:09,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:22:09,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:22:09,312 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 23:22:09,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:22:09,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 23:22:09,313 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 23:22:09,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:22:09,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 23:22:09,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 23:22:09,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 23:22:09,313 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 23:22:09,314 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 23:22:09,314 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 23:22:09,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:22:09,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:22:09,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 23:22:09,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:22:10,380 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:22:10,381 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 23:22:10,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:22:10 BoogieIcfgContainer [2020-08-18 23:22:10,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:22:10,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:22:10,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:22:10,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:22:10,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:22:08" (1/3) ... [2020-08-18 23:22:10,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c20314e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:22:10, skipping insertion in model container [2020-08-18 23:22:10,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (2/3) ... [2020-08-18 23:22:10,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c20314e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:22:10, skipping insertion in model container [2020-08-18 23:22:10,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:22:10" (3/3) ... [2020-08-18 23:22:10,394 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product53.cil.c [2020-08-18 23:22:10,404 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:22:10,413 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:22:10,427 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:22:10,449 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:22:10,450 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:22:10,450 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:22:10,450 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:22:10,450 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:22:10,450 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:22:10,450 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:22:10,450 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:22:10,473 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-18 23:22:10,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 23:22:10,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:10,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:10,486 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:10,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:10,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1930033303, now seen corresponding path program 1 times [2020-08-18 23:22:10,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:10,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015587268] [2020-08-18 23:22:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,174 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:11,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:22:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:22:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:22:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:11,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015587268] [2020-08-18 23:22:11,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:11,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:22:11,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288047175] [2020-08-18 23:22:11,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:22:11,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:11,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:22:11,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:22:11,318 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-18 23:22:12,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:12,554 INFO L93 Difference]: Finished difference Result 341 states and 445 transitions. [2020-08-18 23:22:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:22:12,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 23:22:12,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:12,575 INFO L225 Difference]: With dead ends: 341 [2020-08-18 23:22:12,577 INFO L226 Difference]: Without dead ends: 183 [2020-08-18 23:22:12,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:22:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-18 23:22:12,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 149. [2020-08-18 23:22:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-18 23:22:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 177 transitions. [2020-08-18 23:22:12,695 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 177 transitions. Word has length 52 [2020-08-18 23:22:12,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:12,696 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 177 transitions. [2020-08-18 23:22:12,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:22:12,696 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 177 transitions. [2020-08-18 23:22:12,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 23:22:12,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:12,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:12,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:22:12,701 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:12,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:12,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1692135718, now seen corresponding path program 1 times [2020-08-18 23:22:12,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:12,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202118383] [2020-08-18 23:22:12,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:12,991 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:12,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:22:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:22:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 23:22:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:13,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202118383] [2020-08-18 23:22:13,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:13,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:22:13,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890008530] [2020-08-18 23:22:13,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:22:13,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:13,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:22:13,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:22:13,049 INFO L87 Difference]: Start difference. First operand 149 states and 177 transitions. Second operand 4 states. [2020-08-18 23:22:13,494 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:14,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:14,515 INFO L93 Difference]: Finished difference Result 274 states and 336 transitions. [2020-08-18 23:22:14,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:22:14,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 23:22:14,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:14,520 INFO L225 Difference]: With dead ends: 274 [2020-08-18 23:22:14,520 INFO L226 Difference]: Without dead ends: 167 [2020-08-18 23:22:14,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:22:14,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-18 23:22:14,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2020-08-18 23:22:14,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 23:22:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2020-08-18 23:22:14,564 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 53 [2020-08-18 23:22:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:14,565 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2020-08-18 23:22:14,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:22:14,565 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2020-08-18 23:22:14,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 23:22:14,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:14,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:14,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:22:14,568 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:14,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:14,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1292389066, now seen corresponding path program 1 times [2020-08-18 23:22:14,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:14,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466773322] [2020-08-18 23:22:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:14,885 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:14,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:14,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:14,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:14,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:14,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:14,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:22:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:14,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:22:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:14,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:22:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:14,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466773322] [2020-08-18 23:22:14,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:14,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:22:14,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72684286] [2020-08-18 23:22:14,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:22:14,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:14,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:22:14,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:22:14,984 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 8 states. [2020-08-18 23:22:15,364 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:15,666 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:15,927 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:16,204 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:17,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:17,586 INFO L93 Difference]: Finished difference Result 283 states and 350 transitions. [2020-08-18 23:22:17,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 23:22:17,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 23:22:17,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:17,590 INFO L225 Difference]: With dead ends: 283 [2020-08-18 23:22:17,590 INFO L226 Difference]: Without dead ends: 167 [2020-08-18 23:22:17,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:22:17,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-18 23:22:17,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2020-08-18 23:22:17,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 23:22:17,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2020-08-18 23:22:17,633 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 57 [2020-08-18 23:22:17,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:17,633 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2020-08-18 23:22:17,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:22:17,634 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2020-08-18 23:22:17,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 23:22:17,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:17,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:17,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:22:17,637 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:17,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:17,638 INFO L82 PathProgramCache]: Analyzing trace with hash 875217030, now seen corresponding path program 1 times [2020-08-18 23:22:17,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:17,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446576299] [2020-08-18 23:22:17,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,966 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:17,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:22:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 23:22:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:22:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 23:22:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:18,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446576299] [2020-08-18 23:22:18,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:18,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:22:18,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122635313] [2020-08-18 23:22:18,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:22:18,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:18,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:22:18,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:22:18,067 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 6 states. [2020-08-18 23:22:18,399 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:19,680 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:20,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:20,447 INFO L93 Difference]: Finished difference Result 393 states and 487 transitions. [2020-08-18 23:22:20,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:22:20,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-08-18 23:22:20,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:20,452 INFO L225 Difference]: With dead ends: 393 [2020-08-18 23:22:20,452 INFO L226 Difference]: Without dead ends: 277 [2020-08-18 23:22:20,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:22:20,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-08-18 23:22:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 236. [2020-08-18 23:22:20,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-08-18 23:22:20,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2020-08-18 23:22:20,508 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 75 [2020-08-18 23:22:20,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:20,508 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2020-08-18 23:22:20,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:22:20,508 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2020-08-18 23:22:20,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 23:22:20,510 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:20,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:20,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:22:20,511 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:20,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:20,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1332654256, now seen corresponding path program 1 times [2020-08-18 23:22:20,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:20,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994302602] [2020-08-18 23:22:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,808 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:20,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:22:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 23:22:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 23:22:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 23:22:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:20,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994302602] [2020-08-18 23:22:20,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:20,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:22:20,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86681520] [2020-08-18 23:22:20,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:22:20,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:20,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:22:20,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:22:20,981 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand 8 states. [2020-08-18 23:22:21,349 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:22,665 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:22,940 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:23,187 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:23,412 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:24,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:24,274 INFO L93 Difference]: Finished difference Result 614 states and 761 transitions. [2020-08-18 23:22:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 23:22:24,275 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-18 23:22:24,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:24,278 INFO L225 Difference]: With dead ends: 614 [2020-08-18 23:22:24,279 INFO L226 Difference]: Without dead ends: 402 [2020-08-18 23:22:24,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:22:24,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-08-18 23:22:24,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 362. [2020-08-18 23:22:24,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-18 23:22:24,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 420 transitions. [2020-08-18 23:22:24,351 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 420 transitions. Word has length 89 [2020-08-18 23:22:24,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:24,351 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 420 transitions. [2020-08-18 23:22:24,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:22:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 420 transitions. [2020-08-18 23:22:24,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 23:22:24,354 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:24,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:24,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:22:24,354 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:24,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:24,355 INFO L82 PathProgramCache]: Analyzing trace with hash -920967306, now seen corresponding path program 1 times [2020-08-18 23:22:24,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:24,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762536635] [2020-08-18 23:22:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,647 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:24,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:22:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 23:22:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 23:22:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 23:22:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:24,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762536635] [2020-08-18 23:22:24,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:24,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:22:24,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848252446] [2020-08-18 23:22:24,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:22:24,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:24,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:22:24,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:22:24,818 INFO L87 Difference]: Start difference. First operand 362 states and 420 transitions. Second operand 9 states. [2020-08-18 23:22:25,226 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:25,773 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:27,261 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:29,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:29,285 INFO L93 Difference]: Finished difference Result 935 states and 1195 transitions. [2020-08-18 23:22:29,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 23:22:29,286 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 23:22:29,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:29,291 INFO L225 Difference]: With dead ends: 935 [2020-08-18 23:22:29,291 INFO L226 Difference]: Without dead ends: 712 [2020-08-18 23:22:29,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 23:22:29,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-08-18 23:22:29,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 646. [2020-08-18 23:22:29,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-18 23:22:29,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 781 transitions. [2020-08-18 23:22:29,417 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 781 transitions. Word has length 93 [2020-08-18 23:22:29,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:29,418 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 781 transitions. [2020-08-18 23:22:29,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:22:29,418 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 781 transitions. [2020-08-18 23:22:29,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 23:22:29,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:29,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:29,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:22:29,421 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:29,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:29,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1438339703, now seen corresponding path program 1 times [2020-08-18 23:22:29,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:29,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705166158] [2020-08-18 23:22:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,654 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:29,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:22:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 23:22:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 23:22:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 23:22:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:29,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705166158] [2020-08-18 23:22:29,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:29,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:22:29,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134285320] [2020-08-18 23:22:29,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:22:29,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:29,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:22:29,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:22:29,850 INFO L87 Difference]: Start difference. First operand 646 states and 781 transitions. Second operand 8 states. [2020-08-18 23:22:30,712 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:30,956 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:31,194 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:32,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:32,377 INFO L93 Difference]: Finished difference Result 1191 states and 1490 transitions. [2020-08-18 23:22:32,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 23:22:32,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 23:22:32,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:32,390 INFO L225 Difference]: With dead ends: 1191 [2020-08-18 23:22:32,390 INFO L226 Difference]: Without dead ends: 688 [2020-08-18 23:22:32,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:22:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2020-08-18 23:22:32,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 646. [2020-08-18 23:22:32,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-18 23:22:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 780 transitions. [2020-08-18 23:22:32,566 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 780 transitions. Word has length 93 [2020-08-18 23:22:32,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:32,567 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 780 transitions. [2020-08-18 23:22:32,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:22:32,567 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 780 transitions. [2020-08-18 23:22:32,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 23:22:32,569 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:32,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:32,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:22:32,570 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:32,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:32,570 INFO L82 PathProgramCache]: Analyzing trace with hash 2097871225, now seen corresponding path program 1 times [2020-08-18 23:22:32,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:32,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134244998] [2020-08-18 23:22:32,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,824 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:32,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:22:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 23:22:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 23:22:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 23:22:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:32,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134244998] [2020-08-18 23:22:32,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:32,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:22:32,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059575231] [2020-08-18 23:22:32,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:22:33,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:33,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:22:33,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:22:33,003 INFO L87 Difference]: Start difference. First operand 646 states and 780 transitions. Second operand 12 states. [2020-08-18 23:22:33,518 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:33,754 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:33,989 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:34,663 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:34,908 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:22:35,179 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:35,421 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:36,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:36,857 INFO L93 Difference]: Finished difference Result 1270 states and 1579 transitions. [2020-08-18 23:22:36,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 23:22:36,858 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-18 23:22:36,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:36,862 INFO L225 Difference]: With dead ends: 1270 [2020-08-18 23:22:36,863 INFO L226 Difference]: Without dead ends: 648 [2020-08-18 23:22:36,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 23:22:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-18 23:22:36,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 617. [2020-08-18 23:22:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 23:22:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 740 transitions. [2020-08-18 23:22:36,972 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 740 transitions. Word has length 93 [2020-08-18 23:22:36,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:36,973 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 740 transitions. [2020-08-18 23:22:36,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:22:36,973 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 740 transitions. [2020-08-18 23:22:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 23:22:36,976 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:36,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:36,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:22:36,976 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:36,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:36,977 INFO L82 PathProgramCache]: Analyzing trace with hash 791892564, now seen corresponding path program 1 times [2020-08-18 23:22:36,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:36,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884908136] [2020-08-18 23:22:36,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,287 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:37,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:22:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 23:22:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 23:22:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 23:22:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:37,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884908136] [2020-08-18 23:22:37,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:37,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 23:22:37,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197891352] [2020-08-18 23:22:37,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:22:37,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:37,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:22:37,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:22:37,518 INFO L87 Difference]: Start difference. First operand 617 states and 740 transitions. Second operand 13 states. [2020-08-18 23:22:38,461 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:38,759 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:38,985 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:39,990 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:40,605 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:40,939 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:22:41,221 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:22:41,948 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:42,263 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:42,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:42,665 INFO L93 Difference]: Finished difference Result 1241 states and 1503 transitions. [2020-08-18 23:22:42,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 23:22:42,666 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 94 [2020-08-18 23:22:42,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:42,670 INFO L225 Difference]: With dead ends: 1241 [2020-08-18 23:22:42,670 INFO L226 Difference]: Without dead ends: 648 [2020-08-18 23:22:42,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-18 23:22:42,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-18 23:22:42,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 617. [2020-08-18 23:22:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 23:22:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 724 transitions. [2020-08-18 23:22:42,770 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 724 transitions. Word has length 94 [2020-08-18 23:22:42,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:42,771 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 724 transitions. [2020-08-18 23:22:42,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:22:42,771 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 724 transitions. [2020-08-18 23:22:42,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 23:22:42,773 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:42,774 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:42,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:22:42,774 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:42,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:42,775 INFO L82 PathProgramCache]: Analyzing trace with hash -361137762, now seen corresponding path program 1 times [2020-08-18 23:22:42,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:42,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918185529] [2020-08-18 23:22:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,008 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:43,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:22:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:22:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 23:22:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 23:22:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:22:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 23:22:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 23:22:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 23:22:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 23:22:43,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918185529] [2020-08-18 23:22:43,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:22:43,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 23:22:43,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290870612] [2020-08-18 23:22:43,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:22:43,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:43,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:22:43,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:22:43,192 INFO L87 Difference]: Start difference. First operand 617 states and 724 transitions. Second operand 10 states. [2020-08-18 23:22:44,071 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:44,306 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:22:44,550 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:44,790 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:45,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:45,765 INFO L93 Difference]: Finished difference Result 1154 states and 1382 transitions. [2020-08-18 23:22:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:22:45,770 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-08-18 23:22:45,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:45,774 INFO L225 Difference]: With dead ends: 1154 [2020-08-18 23:22:45,775 INFO L226 Difference]: Without dead ends: 636 [2020-08-18 23:22:45,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:22:45,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-08-18 23:22:45,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 617. [2020-08-18 23:22:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 23:22:45,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 722 transitions. [2020-08-18 23:22:45,922 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 722 transitions. Word has length 137 [2020-08-18 23:22:45,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:45,923 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 722 transitions. [2020-08-18 23:22:45,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:22:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 722 transitions. [2020-08-18 23:22:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 23:22:45,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:45,925 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:45,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:22:45,926 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:45,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:45,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1515345056, now seen corresponding path program 1 times [2020-08-18 23:22:45,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:45,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903604991] [2020-08-18 23:22:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,184 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:46,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:22:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:22:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 23:22:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 23:22:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:22:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 23:22:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 23:22:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 23:22:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:46,398 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 23:22:46,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903604991] [2020-08-18 23:22:46,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:22:46,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 23:22:46,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776752731] [2020-08-18 23:22:46,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:22:46,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:46,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:22:46,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:22:46,401 INFO L87 Difference]: Start difference. First operand 617 states and 722 transitions. Second operand 12 states. [2020-08-18 23:22:46,865 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:47,119 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:47,364 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:47,933 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:48,181 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:48,396 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:49,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:49,521 INFO L93 Difference]: Finished difference Result 1066 states and 1276 transitions. [2020-08-18 23:22:49,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:22:49,522 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 137 [2020-08-18 23:22:49,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:49,528 INFO L225 Difference]: With dead ends: 1066 [2020-08-18 23:22:49,528 INFO L226 Difference]: Without dead ends: 543 [2020-08-18 23:22:49,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:22:49,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-08-18 23:22:49,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 524. [2020-08-18 23:22:49,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-18 23:22:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 611 transitions. [2020-08-18 23:22:49,623 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 611 transitions. Word has length 137 [2020-08-18 23:22:49,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:49,623 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 611 transitions. [2020-08-18 23:22:49,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:22:49,623 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 611 transitions. [2020-08-18 23:22:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 23:22:49,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:49,626 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:49,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:22:49,626 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:49,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:49,627 INFO L82 PathProgramCache]: Analyzing trace with hash -834613817, now seen corresponding path program 1 times [2020-08-18 23:22:49,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:49,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631931217] [2020-08-18 23:22:49,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:49,927 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:49,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:49,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:49,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:49,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:49,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:49,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:49,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:22:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:49,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:22:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:22:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 23:22:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:22:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-18 23:22:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 23:22:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 23:22:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-18 23:22:50,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631931217] [2020-08-18 23:22:50,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:22:50,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 23:22:50,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601157894] [2020-08-18 23:22:50,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 23:22:50,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:50,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 23:22:50,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:22:50,105 INFO L87 Difference]: Start difference. First operand 524 states and 611 transitions. Second operand 11 states. [2020-08-18 23:22:50,464 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:51,005 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:51,833 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:52,326 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 23:22:52,793 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 23:22:53,024 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:22:54,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:54,630 INFO L93 Difference]: Finished difference Result 1550 states and 1871 transitions. [2020-08-18 23:22:54,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 23:22:54,631 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 141 [2020-08-18 23:22:54,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:54,637 INFO L225 Difference]: With dead ends: 1550 [2020-08-18 23:22:54,637 INFO L226 Difference]: Without dead ends: 1050 [2020-08-18 23:22:54,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-18 23:22:54,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-08-18 23:22:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1021. [2020-08-18 23:22:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2020-08-18 23:22:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1176 transitions. [2020-08-18 23:22:54,845 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1176 transitions. Word has length 141 [2020-08-18 23:22:54,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:54,848 INFO L479 AbstractCegarLoop]: Abstraction has 1021 states and 1176 transitions. [2020-08-18 23:22:54,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 23:22:54,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1176 transitions. [2020-08-18 23:22:54,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-18 23:22:54,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:54,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:54,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 23:22:54,851 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:54,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:54,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1626419797, now seen corresponding path program 1 times [2020-08-18 23:22:54,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:54,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053703940] [2020-08-18 23:22:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,163 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:55,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:22:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:22:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:22:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 23:22:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 23:22:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:22:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 23:22:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 23:22:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 23:22:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 23:22:55,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053703940] [2020-08-18 23:22:55,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:22:55,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 23:22:55,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937759569] [2020-08-18 23:22:55,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 23:22:55,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:55,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 23:22:55,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:22:55,383 INFO L87 Difference]: Start difference. First operand 1021 states and 1176 transitions. Second operand 15 states. [2020-08-18 23:22:56,117 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:56,402 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:56,622 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:57,179 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:58,246 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:58,587 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:58,872 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:22:59,124 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:23:01,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:23:01,006 INFO L93 Difference]: Finished difference Result 2052 states and 2452 transitions. [2020-08-18 23:23:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 23:23:01,007 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 145 [2020-08-18 23:23:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:23:01,014 INFO L225 Difference]: With dead ends: 2052 [2020-08-18 23:23:01,014 INFO L226 Difference]: Without dead ends: 1055 [2020-08-18 23:23:01,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-08-18 23:23:01,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-08-18 23:23:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 955. [2020-08-18 23:23:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2020-08-18 23:23:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1097 transitions. [2020-08-18 23:23:01,214 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1097 transitions. Word has length 145 [2020-08-18 23:23:01,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:23:01,215 INFO L479 AbstractCegarLoop]: Abstraction has 955 states and 1097 transitions. [2020-08-18 23:23:01,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 23:23:01,215 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1097 transitions. [2020-08-18 23:23:01,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 23:23:01,219 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:23:01,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:23:01,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 23:23:01,220 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:23:01,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:23:01,221 INFO L82 PathProgramCache]: Analyzing trace with hash -248365737, now seen corresponding path program 1 times [2020-08-18 23:23:01,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:23:01,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388291178] [2020-08-18 23:23:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:23:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,530 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:23:01,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:23:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:23:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:23:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:23:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:23:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:23:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:23:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:23:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:23:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:23:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:23:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:23:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:23:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:23:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:23:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:23:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 23:23:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 23:23:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:23:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:23:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:23:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 23:23:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 23:23:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 23:23:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-18 23:23:01,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388291178] [2020-08-18 23:23:01,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:23:01,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 23:23:01,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423137973] [2020-08-18 23:23:01,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 23:23:01,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:23:01,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 23:23:01,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:23:01,777 INFO L87 Difference]: Start difference. First operand 955 states and 1097 transitions. Second operand 15 states. [2020-08-18 23:23:02,216 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:23:02,882 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:23:03,921 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:23:04,267 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:23:04,741 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 23:23:05,177 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 23:23:06,123 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:23:06,353 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:23:06,599 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:23:06,859 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:23:07,090 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:23:07,321 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189