/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:51:14,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:51:14,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:51:14,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:51:14,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:51:14,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:51:14,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:51:14,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:51:14,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:51:14,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:51:14,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:51:14,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:51:14,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:51:14,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:51:14,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:51:14,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:51:14,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:51:14,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:51:14,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:51:14,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:51:14,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:51:14,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:51:14,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:51:14,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:51:14,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:51:14,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:51:14,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:51:14,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:51:14,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:51:14,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:51:14,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:51:14,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:51:14,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:51:14,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:51:14,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:51:14,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:51:14,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:51:14,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:51:14,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:51:14,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:51:14,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:51:14,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 14:51:14,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:51:14,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:51:14,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:51:14,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:51:14,325 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:51:14,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:51:14,325 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:51:14,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:51:14,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:51:14,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:51:14,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:51:14,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:51:14,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:51:14,327 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:51:14,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:51:14,327 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:51:14,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:51:14,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:51:14,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:51:14,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:51:14,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:51:14,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:51:14,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:51:14,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:51:14,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:51:14,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:51:14,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:51:14,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:51:14,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:51:14,330 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:51:14,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:51:14,829 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:51:14,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:51:14,835 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:51:14,836 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:51:14,837 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c [2020-09-24 14:51:14,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b172faba/365b74f015bd493e815395badd9e0f80/FLAG67b3500c2 [2020-09-24 14:51:15,504 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:51:15,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c [2020-09-24 14:51:15,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b172faba/365b74f015bd493e815395badd9e0f80/FLAG67b3500c2 [2020-09-24 14:51:15,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b172faba/365b74f015bd493e815395badd9e0f80 [2020-09-24 14:51:15,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:51:15,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:51:15,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:51:15,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:51:15,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:51:15,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:51:15" (1/1) ... [2020-09-24 14:51:15,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7845d484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:51:15, skipping insertion in model container [2020-09-24 14:51:15,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:51:15" (1/1) ... [2020-09-24 14:51:15,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:51:15,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:51:16,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:51:16,385 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:51:16,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:51:16,524 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:51:16,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:51:16 WrapperNode [2020-09-24 14:51:16,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:51:16,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:51:16,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:51:16,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:51:16,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:51:16" (1/1) ... [2020-09-24 14:51:16,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:51:16" (1/1) ... [2020-09-24 14:51:16,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:51:16" (1/1) ... [2020-09-24 14:51:16,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:51:16" (1/1) ... [2020-09-24 14:51:16,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:51:16" (1/1) ... [2020-09-24 14:51:16,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:51:16" (1/1) ... [2020-09-24 14:51:16,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:51:16" (1/1) ... [2020-09-24 14:51:16,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:51:16,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:51:16,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:51:16,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:51:16,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:51:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:51:16,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:51:16,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:51:16,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 14:51:16,731 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 14:51:16,731 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 14:51:16,732 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 14:51:16,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 14:51:16,732 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 14:51:16,732 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 14:51:16,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 14:51:16,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 14:51:16,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 14:51:16,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 14:51:16,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 14:51:16,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 14:51:16,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 14:51:16,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 14:51:16,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-09-24 14:51:16,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-09-24 14:51:16,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-09-24 14:51:16,735 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 14:51:16,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 14:51:16,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 14:51:16,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 14:51:16,735 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 14:51:16,736 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 14:51:16,736 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 14:51:16,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 14:51:16,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 14:51:16,736 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 14:51:16,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 14:51:16,737 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 14:51:16,737 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 14:51:16,737 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 14:51:16,737 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 14:51:16,737 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 14:51:16,737 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 14:51:16,738 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 14:51:16,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 14:51:16,738 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 14:51:16,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:51:16,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:51:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:51:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 14:51:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 14:51:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 14:51:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 14:51:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 14:51:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 14:51:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 14:51:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 14:51:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:51:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 14:51:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 14:51:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 14:51:16,741 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 14:51:16,741 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 14:51:16,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 14:51:16,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 14:51:16,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:51:16,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 14:51:16,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 14:51:16,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:51:16,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 14:51:16,742 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 14:51:16,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:51:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 14:51:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 14:51:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 14:51:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 14:51:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-09-24 14:51:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-09-24 14:51:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-09-24 14:51:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 14:51:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 14:51:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 14:51:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 14:51:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 14:51:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 14:51:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 14:51:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 14:51:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 14:51:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 14:51:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 14:51:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 14:51:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 14:51:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 14:51:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 14:51:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 14:51:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 14:51:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 14:51:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 14:51:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:51:16,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:51:16,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 14:51:16,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:51:17,906 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:51:17,907 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 14:51:17,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:51:17 BoogieIcfgContainer [2020-09-24 14:51:17,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:51:17,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:51:17,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:51:17,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:51:17,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:51:15" (1/3) ... [2020-09-24 14:51:17,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509ec4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:51:17, skipping insertion in model container [2020-09-24 14:51:17,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:51:16" (2/3) ... [2020-09-24 14:51:17,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509ec4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:51:17, skipping insertion in model container [2020-09-24 14:51:17,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:51:17" (3/3) ... [2020-09-24 14:51:17,924 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product45.cil.c [2020-09-24 14:51:17,936 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:51:17,947 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:51:17,966 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:51:17,998 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:51:17,998 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:51:17,998 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:51:17,998 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:51:17,998 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:51:17,999 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:51:17,999 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:51:17,999 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:51:18,026 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2020-09-24 14:51:18,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 14:51:18,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:51:18,047 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:51:18,047 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:51:18,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:51:18,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1646918823, now seen corresponding path program 1 times [2020-09-24 14:51:18,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:51:18,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983149146] [2020-09-24 14:51:18,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:51:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:18,840 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:51:18,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:18,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:51:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:18,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:51:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:18,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:51:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:51:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:18,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:51:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:18,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 14:51:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:19,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:19,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 14:51:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:19,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-24 14:51:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 14:51:19,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983149146] [2020-09-24 14:51:19,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:51:19,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:51:19,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757854871] [2020-09-24 14:51:19,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:51:19,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:51:19,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:51:19,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:51:19,128 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 4 states. [2020-09-24 14:51:20,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:51:20,415 INFO L93 Difference]: Finished difference Result 515 states and 603 transitions. [2020-09-24 14:51:20,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:51:20,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-24 14:51:20,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:51:20,441 INFO L225 Difference]: With dead ends: 515 [2020-09-24 14:51:20,441 INFO L226 Difference]: Without dead ends: 323 [2020-09-24 14:51:20,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:51:20,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-09-24 14:51:20,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 277. [2020-09-24 14:51:20,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-09-24 14:51:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 302 transitions. [2020-09-24 14:51:20,571 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 302 transitions. Word has length 160 [2020-09-24 14:51:20,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:51:20,573 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 302 transitions. [2020-09-24 14:51:20,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:51:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 302 transitions. [2020-09-24 14:51:20,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 14:51:20,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:51:20,588 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:51:20,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:51:20,589 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:51:20,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:51:20,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1672652917, now seen corresponding path program 1 times [2020-09-24 14:51:20,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:51:20,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149330034] [2020-09-24 14:51:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:51:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:21,004 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:51:21,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:21,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:51:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:21,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:51:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:21,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:51:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:21,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:51:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:21,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:51:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:21,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 14:51:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:21,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:21,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-24 14:51:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:21,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 14:51:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 14:51:21,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149330034] [2020-09-24 14:51:21,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:51:21,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:51:21,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720391716] [2020-09-24 14:51:21,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:51:21,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:51:21,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:51:21,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:51:21,161 INFO L87 Difference]: Start difference. First operand 277 states and 302 transitions. Second operand 5 states. [2020-09-24 14:51:21,892 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:51:23,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:51:23,022 INFO L93 Difference]: Finished difference Result 444 states and 499 transitions. [2020-09-24 14:51:23,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 14:51:23,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-24 14:51:23,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:51:23,028 INFO L225 Difference]: With dead ends: 444 [2020-09-24 14:51:23,028 INFO L226 Difference]: Without dead ends: 312 [2020-09-24 14:51:23,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:51:23,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-24 14:51:23,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 267. [2020-09-24 14:51:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-24 14:51:23,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 289 transitions. [2020-09-24 14:51:23,078 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 289 transitions. Word has length 161 [2020-09-24 14:51:23,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:51:23,079 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 289 transitions. [2020-09-24 14:51:23,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:51:23,079 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 289 transitions. [2020-09-24 14:51:23,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-24 14:51:23,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:51:23,083 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:51:23,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:51:23,084 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:51:23,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:51:23,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1733555081, now seen corresponding path program 1 times [2020-09-24 14:51:23,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:51:23,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311436602] [2020-09-24 14:51:23,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:51:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:23,592 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:51:23,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:23,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:51:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:23,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:51:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:23,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:51:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:23,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:51:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:23,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:51:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:23,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 14:51:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:23,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:23,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-24 14:51:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:23,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-24 14:51:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 14:51:23,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311436602] [2020-09-24 14:51:23,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:51:23,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 14:51:23,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498066876] [2020-09-24 14:51:23,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 14:51:23,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:51:23,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 14:51:23,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:51:23,850 INFO L87 Difference]: Start difference. First operand 267 states and 289 transitions. Second operand 10 states. [2020-09-24 14:51:24,394 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:51:24,800 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:51:25,131 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:51:25,454 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:51:25,791 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:51:26,086 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:51:27,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:51:27,773 INFO L93 Difference]: Finished difference Result 464 states and 525 transitions. [2020-09-24 14:51:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 14:51:27,779 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-09-24 14:51:27,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:51:27,783 INFO L225 Difference]: With dead ends: 464 [2020-09-24 14:51:27,783 INFO L226 Difference]: Without dead ends: 312 [2020-09-24 14:51:27,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-24 14:51:27,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-24 14:51:27,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 267. [2020-09-24 14:51:27,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-24 14:51:27,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 288 transitions. [2020-09-24 14:51:27,835 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 288 transitions. Word has length 170 [2020-09-24 14:51:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:51:27,836 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 288 transitions. [2020-09-24 14:51:27,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 14:51:27,836 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 288 transitions. [2020-09-24 14:51:27,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-24 14:51:27,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:51:27,839 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:51:27,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:51:27,840 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:51:27,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:51:27,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1907489057, now seen corresponding path program 1 times [2020-09-24 14:51:27,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:51:27,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134801593] [2020-09-24 14:51:27,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:51:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:28,169 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:51:28,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:28,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:51:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:28,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:51:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:28,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:51:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:28,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:51:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:28,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:51:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:28,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 14:51:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:28,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:28,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 14:51:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:28,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:51:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:28,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:51:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:28,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 14:51:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:28,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-24 14:51:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 14:51:28,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134801593] [2020-09-24 14:51:28,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:51:28,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 14:51:28,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852708655] [2020-09-24 14:51:28,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 14:51:28,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:51:28,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 14:51:28,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:51:28,350 INFO L87 Difference]: Start difference. First operand 267 states and 288 transitions. Second operand 7 states. [2020-09-24 14:51:28,996 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:51:30,936 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:51:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:51:31,398 INFO L93 Difference]: Finished difference Result 617 states and 706 transitions. [2020-09-24 14:51:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 14:51:31,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2020-09-24 14:51:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:51:31,406 INFO L225 Difference]: With dead ends: 617 [2020-09-24 14:51:31,406 INFO L226 Difference]: Without dead ends: 465 [2020-09-24 14:51:31,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-24 14:51:31,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-09-24 14:51:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 397. [2020-09-24 14:51:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-09-24 14:51:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 429 transitions. [2020-09-24 14:51:31,465 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 429 transitions. Word has length 183 [2020-09-24 14:51:31,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:51:31,465 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 429 transitions. [2020-09-24 14:51:31,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 14:51:31,466 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 429 transitions. [2020-09-24 14:51:31,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-24 14:51:31,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:51:31,468 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:51:31,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:51:31,469 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:51:31,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:51:31,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1733292252, now seen corresponding path program 1 times [2020-09-24 14:51:31,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:51:31,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760841668] [2020-09-24 14:51:31,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:51:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:31,816 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:51:31,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:31,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:51:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:31,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:51:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:31,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:51:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:31,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:51:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:31,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:51:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:31,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 14:51:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:31,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:31,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 14:51:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:31,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:51:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:31,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:51:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:31,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:51:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:32,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:51:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:32,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-24 14:51:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:32,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-24 14:51:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 14:51:32,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760841668] [2020-09-24 14:51:32,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:51:32,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 14:51:32,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956918593] [2020-09-24 14:51:32,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 14:51:32,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:51:32,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 14:51:32,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-24 14:51:32,144 INFO L87 Difference]: Start difference. First operand 397 states and 429 transitions. Second operand 13 states. [2020-09-24 14:51:32,772 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:51:33,096 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:51:33,406 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:51:33,713 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:51:34,004 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:51:34,964 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:51:35,249 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:51:35,573 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:51:35,908 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:51:36,228 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:51:37,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:51:37,467 INFO L93 Difference]: Finished difference Result 752 states and 856 transitions. [2020-09-24 14:51:37,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 14:51:37,468 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 207 [2020-09-24 14:51:37,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:51:37,472 INFO L225 Difference]: With dead ends: 752 [2020-09-24 14:51:37,472 INFO L226 Difference]: Without dead ends: 470 [2020-09-24 14:51:37,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-09-24 14:51:37,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-09-24 14:51:37,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 403. [2020-09-24 14:51:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-09-24 14:51:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 435 transitions. [2020-09-24 14:51:37,517 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 435 transitions. Word has length 207 [2020-09-24 14:51:37,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:51:37,518 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 435 transitions. [2020-09-24 14:51:37,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 14:51:37,518 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 435 transitions. [2020-09-24 14:51:37,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-24 14:51:37,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:51:37,521 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:51:37,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:51:37,521 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:51:37,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:51:37,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1587804868, now seen corresponding path program 1 times [2020-09-24 14:51:37,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:51:37,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425899968] [2020-09-24 14:51:37,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:51:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:37,903 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:51:37,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:37,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:51:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:37,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:51:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:51:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:37,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:51:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:37,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:51:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:38,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 14:51:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:38,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:38,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 14:51:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:38,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:51:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:38,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:51:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:38,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:51:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:38,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:51:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:38,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-24 14:51:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:38,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-24 14:51:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 14:51:38,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425899968] [2020-09-24 14:51:38,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:51:38,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 14:51:38,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351451822] [2020-09-24 14:51:38,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 14:51:38,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:51:38,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 14:51:38,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:51:38,151 INFO L87 Difference]: Start difference. First operand 403 states and 435 transitions. Second operand 10 states. [2020-09-24 14:51:38,706 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:51:39,560 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:51:39,863 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:51:41,067 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:51:41,355 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:51:41,698 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:51:42,188 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:51:42,491 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:51:42,795 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:51:43,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:51:43,406 INFO L93 Difference]: Finished difference Result 758 states and 854 transitions. [2020-09-24 14:51:43,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 14:51:43,407 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 207 [2020-09-24 14:51:43,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:51:43,411 INFO L225 Difference]: With dead ends: 758 [2020-09-24 14:51:43,411 INFO L226 Difference]: Without dead ends: 470 [2020-09-24 14:51:43,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-24 14:51:43,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-09-24 14:51:43,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 402. [2020-09-24 14:51:43,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-09-24 14:51:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 432 transitions. [2020-09-24 14:51:43,457 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 432 transitions. Word has length 207 [2020-09-24 14:51:43,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:51:43,458 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 432 transitions. [2020-09-24 14:51:43,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 14:51:43,459 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 432 transitions. [2020-09-24 14:51:43,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-24 14:51:43,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:51:43,462 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:51:43,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:51:43,463 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:51:43,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:51:43,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1381187112, now seen corresponding path program 1 times [2020-09-24 14:51:43,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:51:43,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987961477] [2020-09-24 14:51:43,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:51:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,764 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:51:43,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:51:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:51:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:51:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:51:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:51:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 14:51:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 14:51:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:51:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:51:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:51:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:51:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:51:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:51:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:51:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-09-24 14:51:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-09-24 14:51:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 14:51:43,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987961477] [2020-09-24 14:51:43,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:51:43,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 14:51:43,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566450513] [2020-09-24 14:51:43,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 14:51:43,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:51:43,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 14:51:43,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:51:43,999 INFO L87 Difference]: Start difference. First operand 402 states and 432 transitions. Second operand 10 states. [2020-09-24 14:51:45,443 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:51:45,774 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:51:46,128 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-24 14:51:46,458 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:51:46,791 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:51:47,099 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:51:48,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:51:48,133 INFO L93 Difference]: Finished difference Result 761 states and 860 transitions. [2020-09-24 14:51:48,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 14:51:48,140 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 230 [2020-09-24 14:51:48,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:51:48,143 INFO L225 Difference]: With dead ends: 761 [2020-09-24 14:51:48,144 INFO L226 Difference]: Without dead ends: 474 [2020-09-24 14:51:48,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-24 14:51:48,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-09-24 14:51:48,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 410. [2020-09-24 14:51:48,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-09-24 14:51:48,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 440 transitions. [2020-09-24 14:51:48,202 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 440 transitions. Word has length 230 [2020-09-24 14:51:48,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:51:48,202 INFO L479 AbstractCegarLoop]: Abstraction has 410 states and 440 transitions. [2020-09-24 14:51:48,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 14:51:48,202 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 440 transitions. [2020-09-24 14:51:48,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-24 14:51:48,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:51:48,206 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:51:48,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:51:48,206 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:51:48,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:51:48,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1518928507, now seen corresponding path program 1 times [2020-09-24 14:51:48,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:51:48,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059926809] [2020-09-24 14:51:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:51:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,557 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:51:48,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:51:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:51:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:51:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:51:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:51:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 14:51:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 14:51:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:51:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:51:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:51:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:51:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:51:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:51:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:51:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-09-24 14:51:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-09-24 14:51:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 14:51:48,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059926809] [2020-09-24 14:51:48,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:51:48,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 14:51:48,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546135187] [2020-09-24 14:51:48,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 14:51:48,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:51:48,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 14:51:48,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:51:48,789 INFO L87 Difference]: Start difference. First operand 410 states and 440 transitions. Second operand 7 states. [2020-09-24 14:51:49,386 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:51:50,105 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:51:52,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:51:52,498 INFO L93 Difference]: Finished difference Result 1017 states and 1172 transitions. [2020-09-24 14:51:52,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 14:51:52,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-09-24 14:51:52,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:51:52,504 INFO L225 Difference]: With dead ends: 1017 [2020-09-24 14:51:52,504 INFO L226 Difference]: Without dead ends: 722 [2020-09-24 14:51:52,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-24 14:51:52,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2020-09-24 14:51:52,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 653. [2020-09-24 14:51:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2020-09-24 14:51:52,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 720 transitions. [2020-09-24 14:51:52,623 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 720 transitions. Word has length 230 [2020-09-24 14:51:52,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:51:52,624 INFO L479 AbstractCegarLoop]: Abstraction has 653 states and 720 transitions. [2020-09-24 14:51:52,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 14:51:52,624 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 720 transitions. [2020-09-24 14:51:52,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-24 14:51:52,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:51:52,627 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:51:52,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:51:52,628 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:51:52,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:51:52,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1231012387, now seen corresponding path program 1 times [2020-09-24 14:51:52,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:51:52,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430668558] [2020-09-24 14:51:52,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:51:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,114 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:51:53,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:51:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:51:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:51:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:51:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:51:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 14:51:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 14:51:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:51:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 14:51:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:51:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:51:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:51:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:51:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:51:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:51:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:51:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-24 14:51:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-24 14:51:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:51:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 14:51:53,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430668558] [2020-09-24 14:51:53,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:51:53,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 14:51:53,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106687792] [2020-09-24 14:51:53,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 14:51:53,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:51:53,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 14:51:53,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 14:51:53,434 INFO L87 Difference]: Start difference. First operand 653 states and 720 transitions. Second operand 14 states. [2020-09-24 14:51:54,330 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-24 14:51:55,232 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:51:57,050 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-09-24 14:51:57,557 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-09-24 14:51:57,932 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:51:58,259 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:51:58,888 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-09-24 14:51:59,248 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:51:59,603 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:51:59,920 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:52:01,512 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:52:01,817 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:52:02,130 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:52:02,780 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-09-24 14:52:04,187 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 191 [2020-09-24 14:52:04,782 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 193 [2020-09-24 14:52:05,433 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-09-24 14:52:05,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:52:05,808 INFO L93 Difference]: Finished difference Result 1770 states and 2034 transitions. [2020-09-24 14:52:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-24 14:52:05,811 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 235 [2020-09-24 14:52:05,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:52:05,818 INFO L225 Difference]: With dead ends: 1770 [2020-09-24 14:52:05,818 INFO L226 Difference]: Without dead ends: 1335 [2020-09-24 14:52:05,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=499, Invalid=1853, Unknown=0, NotChecked=0, Total=2352 [2020-09-24 14:52:05,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2020-09-24 14:52:05,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1158. [2020-09-24 14:52:05,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1158 states. [2020-09-24 14:52:05,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1267 transitions. [2020-09-24 14:52:05,979 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1267 transitions. Word has length 235 [2020-09-24 14:52:05,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:52:05,980 INFO L479 AbstractCegarLoop]: Abstraction has 1158 states and 1267 transitions. [2020-09-24 14:52:05,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 14:52:05,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1267 transitions. [2020-09-24 14:52:05,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-09-24 14:52:05,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:52:05,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:52:05,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:52:05,984 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:52:05,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:52:05,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1034159388, now seen corresponding path program 1 times [2020-09-24 14:52:05,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:52:05,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049819322] [2020-09-24 14:52:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:52:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,392 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:52:06,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:52:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:52:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:52:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:52:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:52:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:52:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 14:52:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 14:52:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:52:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:52:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 14:52:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:52:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:52:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:52:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:52:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:52:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:52:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:52:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 14:52:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:52:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-24 14:52:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:52:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-09-24 14:52:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-09-24 14:52:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:52:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:52:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 14:52:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:52:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-09-24 14:52:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-24 14:52:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 33 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-24 14:52:06,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049819322] [2020-09-24 14:52:06,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:52:06,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 14:52:06,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927796795] [2020-09-24 14:52:06,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 14:52:06,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:52:06,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 14:52:06,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-09-24 14:52:06,935 INFO L87 Difference]: Start difference. First operand 1158 states and 1267 transitions. Second operand 18 states. [2020-09-24 14:52:07,663 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:52:08,057 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-24 14:52:08,368 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-09-24 14:52:08,712 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 14:52:08,999 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-24 14:52:09,328 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 14:52:10,258 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-24 14:52:10,634 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202