/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:28:33,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:28:33,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:28:33,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:28:33,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:28:33,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:28:33,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:28:33,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:28:33,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:28:33,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:28:33,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:28:33,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:28:33,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:28:33,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:28:33,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:28:33,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:28:33,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:28:33,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:28:33,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:28:33,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:28:33,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:28:33,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:28:33,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:28:33,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:28:33,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:28:33,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:28:33,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:28:33,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:28:33,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:28:33,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:28:33,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:28:33,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:28:33,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:28:33,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:28:33,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:28:33,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:28:33,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:28:33,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:28:33,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:28:33,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:28:33,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:28:33,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 04:28:33,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:28:33,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:28:33,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:28:33,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:28:33,319 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:28:33,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:28:33,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:28:33,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:28:33,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:28:33,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:28:33,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:28:33,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:28:33,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:28:33,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:28:33,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:28:33,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:28:33,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:28:33,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:28:33,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:28:33,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:28:33,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:28:33,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:28:33,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:28:33,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:28:33,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:28:33,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:28:33,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:28:33,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:28:33,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:28:33,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:28:33,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:28:33,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:28:33,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:28:33,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:28:33,686 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:28:33,687 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-22 04:28:33,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e0cb848f/995a2f15607b46568562812de68f3375/FLAG1d9a85909 [2020-08-22 04:28:34,284 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:28:34,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-22 04:28:34,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e0cb848f/995a2f15607b46568562812de68f3375/FLAG1d9a85909 [2020-08-22 04:28:34,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e0cb848f/995a2f15607b46568562812de68f3375 [2020-08-22 04:28:34,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:28:34,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:28:34,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:28:34,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:28:34,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:28:34,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:28:34" (1/1) ... [2020-08-22 04:28:34,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:34, skipping insertion in model container [2020-08-22 04:28:34,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:28:34" (1/1) ... [2020-08-22 04:28:34,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:28:34,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:28:34,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:28:35,117 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:28:35,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:28:35,273 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:28:35,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:35 WrapperNode [2020-08-22 04:28:35,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:28:35,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:28:35,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:28:35,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:28:35,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:35" (1/1) ... [2020-08-22 04:28:35,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:35" (1/1) ... [2020-08-22 04:28:35,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:35" (1/1) ... [2020-08-22 04:28:35,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:35" (1/1) ... [2020-08-22 04:28:35,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:35" (1/1) ... [2020-08-22 04:28:35,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:35" (1/1) ... [2020-08-22 04:28:35,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:35" (1/1) ... [2020-08-22 04:28:35,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:28:35,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:28:35,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:28:35,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:28:35,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:28:35,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:28:35,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:28:35,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:28:35,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:28:35,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:28:35,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:28:35,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:28:35,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:28:35,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:28:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:28:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:28:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:28:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:28:35,443 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:28:35,443 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:28:35,443 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:28:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:28:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 04:28:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 04:28:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 04:28:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:28:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:28:35,445 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:28:35,445 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 04:28:35,445 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:28:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:28:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:28:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:28:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:28:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:28:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:28:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 04:28:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 04:28:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 04:28:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:28:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:28:35,448 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:28:35,448 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:28:35,448 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:28:35,448 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:28:35,448 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:28:35,448 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:28:35,448 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:28:35,449 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:28:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:28:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:28:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:28:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:28:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:28:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:28:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:28:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:28:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:28:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:28:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:28:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:28:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:28:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:28:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:28:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:28:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:28:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:28:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:28:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:28:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:28:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:28:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:28:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:28:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:28:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:28:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:28:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:28:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 04:28:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:28:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 04:28:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 04:28:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:28:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:28:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:28:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:28:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 04:28:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 04:28:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:28:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:28:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:28:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:28:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 04:28:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 04:28:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:28:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:28:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:28:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:28:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:28:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:28:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:28:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:28:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:28:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:28:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:28:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:28:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:28:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:28:36,696 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:28:36,697 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:28:36,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:28:36 BoogieIcfgContainer [2020-08-22 04:28:36,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:28:36,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:28:36,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:28:36,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:28:36,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:28:34" (1/3) ... [2020-08-22 04:28:36,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a67b266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:28:36, skipping insertion in model container [2020-08-22 04:28:36,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:28:35" (2/3) ... [2020-08-22 04:28:36,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a67b266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:28:36, skipping insertion in model container [2020-08-22 04:28:36,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:28:36" (3/3) ... [2020-08-22 04:28:36,715 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2020-08-22 04:28:36,726 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:28:36,734 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:28:36,749 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:28:36,775 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:28:36,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:28:36,775 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:28:36,776 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:28:36,776 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:28:36,776 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:28:36,776 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:28:36,777 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:28:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-08-22 04:28:36,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 04:28:36,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:36,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:36,813 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:36,820 INFO L82 PathProgramCache]: Analyzing trace with hash -453171886, now seen corresponding path program 1 times [2020-08-22 04:28:36,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:36,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680312925] [2020-08-22 04:28:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:37,515 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:37,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:37,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:37,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:37,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:37,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:37,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:28:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:37,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:28:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:37,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680312925] [2020-08-22 04:28:37,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:37,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:28:37,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401647131] [2020-08-22 04:28:37,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:28:37,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:37,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:28:37,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:28:37,646 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 4 states. [2020-08-22 04:28:38,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:38,994 INFO L93 Difference]: Finished difference Result 353 states and 461 transitions. [2020-08-22 04:28:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:28:38,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 04:28:38,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:39,011 INFO L225 Difference]: With dead ends: 353 [2020-08-22 04:28:39,011 INFO L226 Difference]: Without dead ends: 196 [2020-08-22 04:28:39,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:28:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-22 04:28:39,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 158. [2020-08-22 04:28:39,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-22 04:28:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2020-08-22 04:28:39,112 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 51 [2020-08-22 04:28:39,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:39,112 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2020-08-22 04:28:39,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:28:39,113 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2020-08-22 04:28:39,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 04:28:39,117 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:39,117 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] [2020-08-22 04:28:39,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:28:39,117 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:39,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:39,118 INFO L82 PathProgramCache]: Analyzing trace with hash 23130160, now seen corresponding path program 1 times [2020-08-22 04:28:39,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:39,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454151739] [2020-08-22 04:28:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,439 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:28:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:28:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:39,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454151739] [2020-08-22 04:28:39,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:39,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:28:39,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539393191] [2020-08-22 04:28:39,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:28:39,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:39,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:28:39,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:28:39,494 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand 5 states. [2020-08-22 04:28:39,914 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:41,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:41,056 INFO L93 Difference]: Finished difference Result 288 states and 360 transitions. [2020-08-22 04:28:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 04:28:41,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 04:28:41,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:41,062 INFO L225 Difference]: With dead ends: 288 [2020-08-22 04:28:41,062 INFO L226 Difference]: Without dead ends: 186 [2020-08-22 04:28:41,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:28:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-22 04:28:41,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-08-22 04:28:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-22 04:28:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-08-22 04:28:41,130 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 52 [2020-08-22 04:28:41,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:41,131 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-08-22 04:28:41,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:28:41,131 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-08-22 04:28:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 04:28:41,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:41,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:41,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:28:41,134 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:41,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1418292754, now seen corresponding path program 1 times [2020-08-22 04:28:41,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:41,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844945] [2020-08-22 04:28:41,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,466 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:41,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:28:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:28:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:41,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844945] [2020-08-22 04:28:41,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:41,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:28:41,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388027475] [2020-08-22 04:28:41,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:28:41,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:41,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:28:41,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:28:41,594 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 9 states. [2020-08-22 04:28:41,962 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:42,326 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:42,618 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:42,873 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:43,695 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:46,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:46,157 INFO L93 Difference]: Finished difference Result 503 states and 637 transitions. [2020-08-22 04:28:46,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:28:46,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-22 04:28:46,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:46,171 INFO L225 Difference]: With dead ends: 503 [2020-08-22 04:28:46,172 INFO L226 Difference]: Without dead ends: 382 [2020-08-22 04:28:46,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 04:28:46,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-08-22 04:28:46,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 309. [2020-08-22 04:28:46,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-22 04:28:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 378 transitions. [2020-08-22 04:28:46,273 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 378 transitions. Word has length 57 [2020-08-22 04:28:46,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:46,274 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 378 transitions. [2020-08-22 04:28:46,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:28:46,274 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 378 transitions. [2020-08-22 04:28:46,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 04:28:46,277 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:46,277 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] [2020-08-22 04:28:46,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:28:46,278 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:46,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:46,278 INFO L82 PathProgramCache]: Analyzing trace with hash -335998659, now seen corresponding path program 1 times [2020-08-22 04:28:46,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:46,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921202253] [2020-08-22 04:28:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,699 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:46,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:28:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:28:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 04:28:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:46,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921202253] [2020-08-22 04:28:46,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:46,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:28:46,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141802257] [2020-08-22 04:28:46,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:28:46,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:46,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:28:46,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:28:46,826 INFO L87 Difference]: Start difference. First operand 309 states and 378 transitions. Second operand 9 states. [2020-08-22 04:28:47,258 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:48,351 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:48,825 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:49,085 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:49,345 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:51,194 INFO L93 Difference]: Finished difference Result 992 states and 1314 transitions. [2020-08-22 04:28:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 04:28:51,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-22 04:28:51,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:51,201 INFO L225 Difference]: With dead ends: 992 [2020-08-22 04:28:51,201 INFO L226 Difference]: Without dead ends: 711 [2020-08-22 04:28:51,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 04:28:51,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-08-22 04:28:51,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 566. [2020-08-22 04:28:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-08-22 04:28:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 696 transitions. [2020-08-22 04:28:51,364 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 696 transitions. Word has length 62 [2020-08-22 04:28:51,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:51,365 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 696 transitions. [2020-08-22 04:28:51,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:28:51,365 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 696 transitions. [2020-08-22 04:28:51,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 04:28:51,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:51,369 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] [2020-08-22 04:28:51,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:28:51,370 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:51,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:51,371 INFO L82 PathProgramCache]: Analyzing trace with hash 563759321, now seen corresponding path program 1 times [2020-08-22 04:28:51,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:51,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802883910] [2020-08-22 04:28:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:51,702 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:51,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:51,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:51,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:51,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:51,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:51,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:51,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:28:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 04:28:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:51,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 04:28:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:51,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 04:28:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:51,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:51,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802883910] [2020-08-22 04:28:51,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:51,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:28:51,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974367210] [2020-08-22 04:28:51,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:28:51,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:51,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:28:51,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:28:51,864 INFO L87 Difference]: Start difference. First operand 566 states and 696 transitions. Second operand 10 states. [2020-08-22 04:28:52,202 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:53,257 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:53,550 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:53,796 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:54,508 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:56,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:56,143 INFO L93 Difference]: Finished difference Result 1565 states and 2138 transitions. [2020-08-22 04:28:56,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 04:28:56,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-22 04:28:56,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:56,152 INFO L225 Difference]: With dead ends: 1565 [2020-08-22 04:28:56,153 INFO L226 Difference]: Without dead ends: 1027 [2020-08-22 04:28:56,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-22 04:28:56,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-08-22 04:28:56,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 821. [2020-08-22 04:28:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-22 04:28:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2020-08-22 04:28:56,357 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 66 [2020-08-22 04:28:56,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:56,360 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2020-08-22 04:28:56,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:28:56,360 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2020-08-22 04:28:56,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 04:28:56,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:56,366 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] [2020-08-22 04:28:56,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:28:56,366 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:56,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:56,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1340944239, now seen corresponding path program 1 times [2020-08-22 04:28:56,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:56,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072596730] [2020-08-22 04:28:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,643 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:56,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:28:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:28:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 04:28:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 04:28:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:56,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072596730] [2020-08-22 04:28:56,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:56,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:28:56,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548310474] [2020-08-22 04:28:56,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:28:56,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:56,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:28:56,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:28:56,832 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 10 states. [2020-08-22 04:28:58,094 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:58,354 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 04:28:58,646 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:58,934 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:00,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:00,401 INFO L93 Difference]: Finished difference Result 1894 states and 2518 transitions. [2020-08-22 04:29:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:29:00,409 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-22 04:29:00,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:00,418 INFO L225 Difference]: With dead ends: 1894 [2020-08-22 04:29:00,418 INFO L226 Difference]: Without dead ends: 1101 [2020-08-22 04:29:00,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:29:00,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-08-22 04:29:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 847. [2020-08-22 04:29:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-22 04:29:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-22 04:29:00,593 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 94 [2020-08-22 04:29:00,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:00,593 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-22 04:29:00,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:29:00,594 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-22 04:29:00,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 04:29:00,596 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:00,596 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] [2020-08-22 04:29:00,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:29:00,596 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:00,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:00,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1413330797, now seen corresponding path program 1 times [2020-08-22 04:29:00,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:00,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700667220] [2020-08-22 04:29:00,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:00,873 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:00,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:00,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:00,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:00,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:00,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:00,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:29:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:00,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:29:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:00,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:00,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:00,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:00,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:01,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:01,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:01,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 04:29:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:01,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 04:29:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:29:01,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700667220] [2020-08-22 04:29:01,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:01,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:29:01,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660581616] [2020-08-22 04:29:01,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:29:01,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:01,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:29:01,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:29:01,043 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 12 states. [2020-08-22 04:29:01,550 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:01,810 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:02,064 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:02,957 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:03,233 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:03,508 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:05,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:05,197 INFO L93 Difference]: Finished difference Result 1948 states and 2635 transitions. [2020-08-22 04:29:05,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:29:05,197 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-22 04:29:05,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:05,206 INFO L225 Difference]: With dead ends: 1948 [2020-08-22 04:29:05,206 INFO L226 Difference]: Without dead ends: 1129 [2020-08-22 04:29:05,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 04:29:05,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-08-22 04:29:05,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 863. [2020-08-22 04:29:05,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-08-22 04:29:05,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1043 transitions. [2020-08-22 04:29:05,369 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1043 transitions. Word has length 94 [2020-08-22 04:29:05,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:05,370 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1043 transitions. [2020-08-22 04:29:05,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:29:05,370 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1043 transitions. [2020-08-22 04:29:05,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 04:29:05,372 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:05,372 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] [2020-08-22 04:29:05,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:29:05,373 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:05,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:05,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1083565036, now seen corresponding path program 1 times [2020-08-22 04:29:05,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:05,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339142408] [2020-08-22 04:29:05,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,637 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:05,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:29:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:29:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 04:29:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 04:29:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:05,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:29:05,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339142408] [2020-08-22 04:29:05,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:05,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:29:05,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837987344] [2020-08-22 04:29:05,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:29:05,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:05,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:29:05,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:29:05,876 INFO L87 Difference]: Start difference. First operand 863 states and 1043 transitions. Second operand 8 states. [2020-08-22 04:29:06,255 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:29:06,799 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:29:09,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:09,962 INFO L93 Difference]: Finished difference Result 2919 states and 3977 transitions. [2020-08-22 04:29:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 04:29:09,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-22 04:29:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:09,976 INFO L225 Difference]: With dead ends: 2919 [2020-08-22 04:29:09,977 INFO L226 Difference]: Without dead ends: 2084 [2020-08-22 04:29:09,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-22 04:29:09,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-08-22 04:29:10,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1727. [2020-08-22 04:29:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-22 04:29:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2109 transitions. [2020-08-22 04:29:10,438 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2109 transitions. Word has length 94 [2020-08-22 04:29:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:10,439 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2109 transitions. [2020-08-22 04:29:10,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:29:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2109 transitions. [2020-08-22 04:29:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-22 04:29:10,443 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:10,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:10,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:29:10,444 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash -452793586, now seen corresponding path program 1 times [2020-08-22 04:29:10,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:10,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190585888] [2020-08-22 04:29:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,708 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:10,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:29:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:29:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:29:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:29:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 04:29:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 04:29:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:10,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:29:10,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190585888] [2020-08-22 04:29:10,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:10,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:29:10,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004125708] [2020-08-22 04:29:10,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:29:10,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:10,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:29:10,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:29:10,847 INFO L87 Difference]: Start difference. First operand 1727 states and 2109 transitions. Second operand 8 states. [2020-08-22 04:29:11,323 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:29:14,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:14,785 INFO L93 Difference]: Finished difference Result 3491 states and 4776 transitions. [2020-08-22 04:29:14,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 04:29:14,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-22 04:29:14,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:14,808 INFO L225 Difference]: With dead ends: 3491 [2020-08-22 04:29:14,808 INFO L226 Difference]: Without dead ends: 3488 [2020-08-22 04:29:14,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-22 04:29:14,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-08-22 04:29:15,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 2882. [2020-08-22 04:29:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-08-22 04:29:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3603 transitions. [2020-08-22 04:29:15,440 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3603 transitions. Word has length 98 [2020-08-22 04:29:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:15,443 INFO L479 AbstractCegarLoop]: Abstraction has 2882 states and 3603 transitions. [2020-08-22 04:29:15,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:29:15,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3603 transitions. [2020-08-22 04:29:15,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-22 04:29:15,453 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:15,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 04:29:15,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:29:15,455 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:15,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:15,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1115432797, now seen corresponding path program 1 times [2020-08-22 04:29:15,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:15,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487382442] [2020-08-22 04:29:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,762 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:15,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:29:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:29:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:29:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:29:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:29:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:29:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-22 04:29:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:15,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:16,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 04:29:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:16,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 04:29:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:16,069 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-22 04:29:16,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487382442] [2020-08-22 04:29:16,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:29:16,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 04:29:16,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134657874] [2020-08-22 04:29:16,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 04:29:16,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:16,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 04:29:16,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-22 04:29:16,073 INFO L87 Difference]: Start difference. First operand 2882 states and 3603 transitions. Second operand 13 states. [2020-08-22 04:29:16,731 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:17,031 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:17,316 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:29:19,155 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:29:21,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:21,366 INFO L93 Difference]: Finished difference Result 5433 states and 7114 transitions. [2020-08-22 04:29:21,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 04:29:21,366 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-08-22 04:29:21,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:21,384 INFO L225 Difference]: With dead ends: 5433 [2020-08-22 04:29:21,384 INFO L226 Difference]: Without dead ends: 2935 [2020-08-22 04:29:21,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 04:29:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-08-22 04:29:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2614. [2020-08-22 04:29:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2614 states. [2020-08-22 04:29:21,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3075 transitions. [2020-08-22 04:29:21,808 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3075 transitions. Word has length 162 [2020-08-22 04:29:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:21,809 INFO L479 AbstractCegarLoop]: Abstraction has 2614 states and 3075 transitions. [2020-08-22 04:29:21,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 04:29:21,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3075 transitions. [2020-08-22 04:29:21,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-22 04:29:21,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:21,818 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 04:29:21,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:29:21,818 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:21,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:21,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1460495039, now seen corresponding path program 1 times [2020-08-22 04:29:21,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:21,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814577489] [2020-08-22 04:29:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,082 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:22,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:29:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:29:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:29:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:29:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:29:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:29:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 04:29:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 04:29:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-22 04:29:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-22 04:29:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-22 04:29:22,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814577489] [2020-08-22 04:29:22,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:29:22,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:29:22,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956391146] [2020-08-22 04:29:22,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:29:22,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:22,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:29:22,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:29:22,374 INFO L87 Difference]: Start difference. First operand 2614 states and 3075 transitions. Second operand 10 states. [2020-08-22 04:29:23,187 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:29:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:25,609 INFO L93 Difference]: Finished difference Result 4369 states and 5351 transitions. [2020-08-22 04:29:25,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-22 04:29:25,609 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2020-08-22 04:29:25,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:25,620 INFO L225 Difference]: With dead ends: 4369 [2020-08-22 04:29:25,620 INFO L226 Difference]: Without dead ends: 1783 [2020-08-22 04:29:25,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=354, Invalid=1128, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 04:29:25,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2020-08-22 04:29:25,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1328. [2020-08-22 04:29:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-08-22 04:29:25,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1543 transitions. [2020-08-22 04:29:25,827 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1543 transitions. Word has length 171 [2020-08-22 04:29:25,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:25,828 INFO L479 AbstractCegarLoop]: Abstraction has 1328 states and 1543 transitions. [2020-08-22 04:29:25,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:29:25,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1543 transitions. [2020-08-22 04:29:25,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-22 04:29:25,833 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:25,833 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:25,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:29:25,834 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:25,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:25,834 INFO L82 PathProgramCache]: Analyzing trace with hash 177222806, now seen corresponding path program 1 times [2020-08-22 04:29:25,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:25,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139797404] [2020-08-22 04:29:25,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,115 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:26,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:29:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:29:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:29:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:29:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:29:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:29:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:29:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 04:29:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 04:29:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:29:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:29:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:29:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:29:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 04:29:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-22 04:29:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-22 04:29:26,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139797404] [2020-08-22 04:29:26,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:29:26,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 04:29:26,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236687191] [2020-08-22 04:29:26,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 04:29:26,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:26,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 04:29:26,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:29:26,437 INFO L87 Difference]: Start difference. First operand 1328 states and 1543 transitions. Second operand 19 states. [2020-08-22 04:29:26,897 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:29:27,237 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:27,515 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:27,784 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:29:28,646 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:29:29,282 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:29:29,724 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:29:32,226 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:29:32,568 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 191