/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:12:20,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:12:20,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:12:20,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:12:20,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:12:20,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:12:20,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:12:20,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:12:20,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:12:20,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:12:20,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:12:20,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:12:20,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:12:20,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:12:20,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:12:20,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:12:20,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:12:20,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:12:20,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:12:20,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:12:20,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:12:20,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:12:20,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:12:20,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:12:20,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:12:20,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:12:20,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:12:20,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:12:20,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:12:20,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:12:20,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:12:20,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:12:20,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:12:20,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:12:20,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:12:20,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:12:20,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:12:20,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:12:20,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:12:20,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:12:20,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:12:20,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:12:20,277 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:12:20,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:12:20,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:12:20,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:12:20,281 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:12:20,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:12:20,282 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:12:20,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:12:20,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:12:20,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:12:20,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:12:20,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:12:20,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:12:20,284 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:12:20,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:12:20,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:12:20,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:12:20,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:12:20,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:12:20,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:12:20,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:12:20,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:12:20,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:12:20,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:12:20,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:12:20,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:12:20,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:12:20,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:12:20,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:12:20,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true [2020-08-18 16:12:20,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:12:20,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:12:20,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:12:20,616 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:12:20,617 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:12:20,617 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2020-08-18 16:12:20,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4eb59b67/bedbfceb4c624834a7b1b33c30908ee3/FLAG2e5e154f9 [2020-08-18 16:12:21,246 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:12:21,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2020-08-18 16:12:21,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4eb59b67/bedbfceb4c624834a7b1b33c30908ee3/FLAG2e5e154f9 [2020-08-18 16:12:21,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4eb59b67/bedbfceb4c624834a7b1b33c30908ee3 [2020-08-18 16:12:21,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:12:21,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:12:21,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:12:21,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:12:21,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:12:21,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:12:21" (1/1) ... [2020-08-18 16:12:21,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcf94a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:21, skipping insertion in model container [2020-08-18 16:12:21,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:12:21" (1/1) ... [2020-08-18 16:12:21,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:12:21,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:12:21,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:12:21,997 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:12:22,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:12:22,167 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:12:22,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:22 WrapperNode [2020-08-18 16:12:22,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:12:22,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:12:22,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:12:22,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:12:22,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:22" (1/1) ... [2020-08-18 16:12:22,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:22" (1/1) ... [2020-08-18 16:12:22,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:22" (1/1) ... [2020-08-18 16:12:22,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:22" (1/1) ... [2020-08-18 16:12:22,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:22" (1/1) ... [2020-08-18 16:12:22,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:22" (1/1) ... [2020-08-18 16:12:22,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:22" (1/1) ... [2020-08-18 16:12:22,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:12:22,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:12:22,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:12:22,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:12:22,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:12:22,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:12:22,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:12:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:12:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:12:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:12:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:12:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:12:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:12:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:12:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:12:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 16:12:22,337 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:12:22,337 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:12:22,337 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:12:22,338 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:12:22,338 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:12:22,339 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 16:12:22,339 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:12:22,339 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:12:22,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:12:22,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:12:22,340 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:12:22,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:12:22,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 16:12:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:12:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:12:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:12:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:12:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:12:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:12:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:12:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:12:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:12:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:12:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:12:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:12:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:12:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:12:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:12:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:12:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:12:22,346 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:12:22,346 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:12:22,346 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:12:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:12:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:12:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:12:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:12:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:12:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:12:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:12:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:12:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:12:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:12:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 16:12:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:12:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:12:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:12:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:12:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:12:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:12:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:12:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:12:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:12:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:12:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:12:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:12:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:12:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:12:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:12:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 16:12:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 16:12:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:12:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:12:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:12:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:12:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:12:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:12:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:12:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:12:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:12:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:12:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:12:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:12:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:12:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:12:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:12:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:12:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:12:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:12:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:12:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:12:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:12:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:12:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:12:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:12:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:12:22,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:12:22,355 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:12:22,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:12:22,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:12:22,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:12:23,391 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:12:23,392 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:12:23,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:12:23 BoogieIcfgContainer [2020-08-18 16:12:23,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:12:23,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:12:23,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:12:23,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:12:23,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:12:21" (1/3) ... [2020-08-18 16:12:23,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4669a1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:12:23, skipping insertion in model container [2020-08-18 16:12:23,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:22" (2/3) ... [2020-08-18 16:12:23,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4669a1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:12:23, skipping insertion in model container [2020-08-18 16:12:23,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:12:23" (3/3) ... [2020-08-18 16:12:23,406 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product59.cil.c [2020-08-18 16:12:23,416 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:12:23,425 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:12:23,439 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:12:23,466 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:12:23,466 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:12:23,466 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:12:23,467 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:12:23,467 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:12:23,467 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:12:23,467 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:12:23,468 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:12:23,491 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-18 16:12:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 16:12:23,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:23,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:23,505 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:23,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:23,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1133755032, now seen corresponding path program 1 times [2020-08-18 16:12:23,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:23,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138965569] [2020-08-18 16:12:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,187 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:24,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:12:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:12:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:12:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:12:24,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138965569] [2020-08-18 16:12:24,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:24,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:12:24,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080521484] [2020-08-18 16:12:24,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:12:24,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:24,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:12:24,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:12:24,386 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 4 states. [2020-08-18 16:12:25,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:25,656 INFO L93 Difference]: Finished difference Result 350 states and 444 transitions. [2020-08-18 16:12:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:12:25,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 16:12:25,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:25,684 INFO L225 Difference]: With dead ends: 350 [2020-08-18 16:12:25,685 INFO L226 Difference]: Without dead ends: 192 [2020-08-18 16:12:25,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:12:25,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-08-18 16:12:25,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 159. [2020-08-18 16:12:25,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-18 16:12:25,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2020-08-18 16:12:25,869 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 59 [2020-08-18 16:12:25,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:25,870 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2020-08-18 16:12:25,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:12:25,870 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2020-08-18 16:12:25,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 16:12:25,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:25,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:25,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:12:25,885 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:25,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:25,886 INFO L82 PathProgramCache]: Analyzing trace with hash -138893135, now seen corresponding path program 1 times [2020-08-18 16:12:25,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:25,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409170762] [2020-08-18 16:12:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:26,296 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:26,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:26,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:26,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:26,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:26,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:26,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:12:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:26,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:12:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:26,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:12:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:12:26,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409170762] [2020-08-18 16:12:26,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:26,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:12:26,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674631996] [2020-08-18 16:12:26,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:12:26,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:26,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:12:26,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:12:26,390 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand 5 states. [2020-08-18 16:12:26,897 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:27,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:27,994 INFO L93 Difference]: Finished difference Result 289 states and 348 transitions. [2020-08-18 16:12:27,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:12:27,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 16:12:27,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:27,998 INFO L225 Difference]: With dead ends: 289 [2020-08-18 16:12:27,999 INFO L226 Difference]: Without dead ends: 182 [2020-08-18 16:12:28,001 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 [2020-08-18 16:12:28,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-18 16:12:28,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 150. [2020-08-18 16:12:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-18 16:12:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 174 transitions. [2020-08-18 16:12:28,065 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 174 transitions. Word has length 60 [2020-08-18 16:12:28,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:28,065 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 174 transitions. [2020-08-18 16:12:28,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:12:28,066 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 174 transitions. [2020-08-18 16:12:28,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 16:12:28,067 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:28,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:28,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:12:28,068 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:28,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:28,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1740604635, now seen corresponding path program 1 times [2020-08-18 16:12:28,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:28,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635311011] [2020-08-18 16:12:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:28,409 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:28,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:28,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:28,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:28,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:28,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:28,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:28,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:28,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:28,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:12:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:28,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:12:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:12:28,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635311011] [2020-08-18 16:12:28,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:28,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:12:28,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821922705] [2020-08-18 16:12:28,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:12:28,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:28,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:12:28,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:12:28,515 INFO L87 Difference]: Start difference. First operand 150 states and 174 transitions. Second operand 9 states. [2020-08-18 16:12:28,926 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:29,288 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:29,552 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:29,801 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:30,699 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:32,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:32,720 INFO L93 Difference]: Finished difference Result 499 states and 610 transitions. [2020-08-18 16:12:32,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:12:32,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 16:12:32,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:32,726 INFO L225 Difference]: With dead ends: 499 [2020-08-18 16:12:32,726 INFO L226 Difference]: Without dead ends: 377 [2020-08-18 16:12:32,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:12:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-08-18 16:12:32,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 320. [2020-08-18 16:12:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-08-18 16:12:32,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 384 transitions. [2020-08-18 16:12:32,829 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 384 transitions. Word has length 64 [2020-08-18 16:12:32,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:32,830 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 384 transitions. [2020-08-18 16:12:32,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:12:32,830 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 384 transitions. [2020-08-18 16:12:32,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 16:12:32,832 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:32,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:32,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:12:32,833 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:32,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:32,833 INFO L82 PathProgramCache]: Analyzing trace with hash 659595443, now seen corresponding path program 1 times [2020-08-18 16:12:32,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:32,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779980894] [2020-08-18 16:12:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:33,142 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:33,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:33,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:33,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:33,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:33,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:33,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:12:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:33,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:33,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:12:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:33,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 16:12:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:33,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:12:33,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779980894] [2020-08-18 16:12:33,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:33,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:12:33,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020275178] [2020-08-18 16:12:33,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:12:33,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:33,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:12:33,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:12:33,278 INFO L87 Difference]: Start difference. First operand 320 states and 384 transitions. Second operand 9 states. [2020-08-18 16:12:33,683 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:34,328 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:35,321 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:35,557 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:35,859 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:36,135 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:36,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:36,894 INFO L93 Difference]: Finished difference Result 803 states and 1032 transitions. [2020-08-18 16:12:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:12:36,895 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 16:12:36,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:36,900 INFO L225 Difference]: With dead ends: 803 [2020-08-18 16:12:36,900 INFO L226 Difference]: Without dead ends: 511 [2020-08-18 16:12:36,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:12:36,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-08-18 16:12:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 447. [2020-08-18 16:12:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-08-18 16:12:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 535 transitions. [2020-08-18 16:12:37,001 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 535 transitions. Word has length 70 [2020-08-18 16:12:37,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:37,002 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 535 transitions. [2020-08-18 16:12:37,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:12:37,002 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 535 transitions. [2020-08-18 16:12:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 16:12:37,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:37,005 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:37,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:12:37,005 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:37,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:37,006 INFO L82 PathProgramCache]: Analyzing trace with hash -73914297, now seen corresponding path program 1 times [2020-08-18 16:12:37,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:37,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743960816] [2020-08-18 16:12:37,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,305 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:37,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:12:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 16:12:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 16:12:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:12:37,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743960816] [2020-08-18 16:12:37,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:37,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:12:37,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803497494] [2020-08-18 16:12:37,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:12:37,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:37,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:12:37,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:12:37,505 INFO L87 Difference]: Start difference. First operand 447 states and 535 transitions. Second operand 9 states. [2020-08-18 16:12:38,574 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:38,832 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:12:39,114 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:39,361 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:40,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:40,275 INFO L93 Difference]: Finished difference Result 956 states and 1224 transitions. [2020-08-18 16:12:40,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:12:40,276 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-08-18 16:12:40,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:40,281 INFO L225 Difference]: With dead ends: 956 [2020-08-18 16:12:40,281 INFO L226 Difference]: Without dead ends: 537 [2020-08-18 16:12:40,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:12:40,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-08-18 16:12:40,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 460. [2020-08-18 16:12:40,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-08-18 16:12:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 549 transitions. [2020-08-18 16:12:40,371 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 549 transitions. Word has length 107 [2020-08-18 16:12:40,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:40,372 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 549 transitions. [2020-08-18 16:12:40,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:12:40,372 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 549 transitions. [2020-08-18 16:12:40,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 16:12:40,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:40,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:40,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:12:40,375 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:40,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:40,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1854358405, now seen corresponding path program 1 times [2020-08-18 16:12:40,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:40,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737968142] [2020-08-18 16:12:40,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,646 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:40,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:12:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 16:12:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 16:12:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:12:40,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737968142] [2020-08-18 16:12:40,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:40,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:12:40,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366492632] [2020-08-18 16:12:40,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:12:40,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:40,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:12:40,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:12:40,813 INFO L87 Difference]: Start difference. First operand 460 states and 549 transitions. Second operand 11 states. [2020-08-18 16:12:41,343 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:41,581 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:41,804 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:42,555 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:42,853 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:43,090 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:44,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:44,119 INFO L93 Difference]: Finished difference Result 979 states and 1248 transitions. [2020-08-18 16:12:44,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:12:44,125 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-08-18 16:12:44,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:44,130 INFO L225 Difference]: With dead ends: 979 [2020-08-18 16:12:44,130 INFO L226 Difference]: Without dead ends: 547 [2020-08-18 16:12:44,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:12:44,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-08-18 16:12:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 468. [2020-08-18 16:12:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-18 16:12:44,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2020-08-18 16:12:44,214 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 107 [2020-08-18 16:12:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:44,214 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2020-08-18 16:12:44,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:12:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2020-08-18 16:12:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 16:12:44,217 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:44,217 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:44,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:12:44,217 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:44,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:44,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1613818276, now seen corresponding path program 1 times [2020-08-18 16:12:44,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:44,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280131652] [2020-08-18 16:12:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,547 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:44,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:12:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 16:12:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 16:12:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:12:44,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280131652] [2020-08-18 16:12:44,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:44,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:12:44,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553780470] [2020-08-18 16:12:44,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:12:44,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:44,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:12:44,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:12:44,729 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 7 states. [2020-08-18 16:12:45,170 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:45,725 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:47,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:47,825 INFO L93 Difference]: Finished difference Result 1447 states and 1864 transitions. [2020-08-18 16:12:47,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:12:47,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-08-18 16:12:47,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:47,835 INFO L225 Difference]: With dead ends: 1447 [2020-08-18 16:12:47,835 INFO L226 Difference]: Without dead ends: 1007 [2020-08-18 16:12:47,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:12:47,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-08-18 16:12:48,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 933. [2020-08-18 16:12:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-08-18 16:12:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1131 transitions. [2020-08-18 16:12:48,013 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1131 transitions. Word has length 107 [2020-08-18 16:12:48,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:48,013 INFO L479 AbstractCegarLoop]: Abstraction has 933 states and 1131 transitions. [2020-08-18 16:12:48,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:12:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1131 transitions. [2020-08-18 16:12:48,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-18 16:12:48,018 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:48,018 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:48,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:12:48,019 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:48,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:48,019 INFO L82 PathProgramCache]: Analyzing trace with hash 608509898, now seen corresponding path program 1 times [2020-08-18 16:12:48,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:48,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525182609] [2020-08-18 16:12:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,373 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:48,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:12:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:12:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:12:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 16:12:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 16:12:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:12:48,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525182609] [2020-08-18 16:12:48,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:48,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:12:48,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424101079] [2020-08-18 16:12:48,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:12:48,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:48,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:12:48,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:12:48,642 INFO L87 Difference]: Start difference. First operand 933 states and 1131 transitions. Second operand 12 states. [2020-08-18 16:12:49,148 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:49,823 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:50,487 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:50,851 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:51,170 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:51,466 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:51,755 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:53,860 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:54,149 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:54,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:54,786 INFO L93 Difference]: Finished difference Result 2649 states and 3420 transitions. [2020-08-18 16:12:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 16:12:54,791 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-08-18 16:12:54,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:54,806 INFO L225 Difference]: With dead ends: 2649 [2020-08-18 16:12:54,807 INFO L226 Difference]: Without dead ends: 1932 [2020-08-18 16:12:54,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 16:12:54,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2020-08-18 16:12:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1638. [2020-08-18 16:12:55,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1638 states. [2020-08-18 16:12:55,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 1972 transitions. [2020-08-18 16:12:55,167 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 1972 transitions. Word has length 111 [2020-08-18 16:12:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:55,171 INFO L479 AbstractCegarLoop]: Abstraction has 1638 states and 1972 transitions. [2020-08-18 16:12:55,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:12:55,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 1972 transitions. [2020-08-18 16:12:55,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-18 16:12:55,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:55,178 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:55,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:12:55,179 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:55,180 INFO L82 PathProgramCache]: Analyzing trace with hash 866799866, now seen corresponding path program 1 times [2020-08-18 16:12:55,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:55,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255060076] [2020-08-18 16:12:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,517 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:12:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:12:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:12:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:12:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 16:12:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 16:12:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 16:12:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:12:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 16:12:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 16:12:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 16:12:55,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255060076] [2020-08-18 16:12:55,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:12:55,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:12:55,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123493277] [2020-08-18 16:12:55,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:12:55,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:55,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:12:55,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:12:55,802 INFO L87 Difference]: Start difference. First operand 1638 states and 1972 transitions. Second operand 16 states. [2020-08-18 16:12:56,399 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:56,718 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 16:12:56,981 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 16:12:57,225 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 16:12:57,799 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:58,120 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:58,443 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:12:58,714 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:12:59,900 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:13:00,390 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:00,736 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:01,063 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:01,588 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:13:01,969 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:02,323 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:13:02,890 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:03,192 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:13:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:13:03,749 INFO L93 Difference]: Finished difference Result 3517 states and 4366 transitions. [2020-08-18 16:13:03,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-18 16:13:03,750 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-08-18 16:13:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:13:03,762 INFO L225 Difference]: With dead ends: 3517 [2020-08-18 16:13:03,763 INFO L226 Difference]: Without dead ends: 2083 [2020-08-18 16:13:03,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-18 16:13:03,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2020-08-18 16:13:04,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1905. [2020-08-18 16:13:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1905 states. [2020-08-18 16:13:04,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2254 transitions. [2020-08-18 16:13:04,126 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2254 transitions. Word has length 172 [2020-08-18 16:13:04,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:13:04,127 INFO L479 AbstractCegarLoop]: Abstraction has 1905 states and 2254 transitions. [2020-08-18 16:13:04,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 16:13:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2254 transitions. [2020-08-18 16:13:04,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-08-18 16:13:04,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:13:04,138 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:13:04,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:13:04,138 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:13:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:13:04,139 INFO L82 PathProgramCache]: Analyzing trace with hash 41456611, now seen corresponding path program 1 times [2020-08-18 16:13:04,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:13:04,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323237854] [2020-08-18 16:13:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:13:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,482 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:13:04,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:13:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:13:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:13:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:13:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:13:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:13:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:13:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 16:13:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:13:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:13:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-18 16:13:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:13:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:04,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:13:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-18 16:13:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-18 16:13:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-18 16:13:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-18 16:13:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 16:13:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 79 proven. 29 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-08-18 16:13:05,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323237854] [2020-08-18 16:13:05,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:13:05,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 16:13:05,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759644151] [2020-08-18 16:13:05,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 16:13:05,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:13:05,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 16:13:05,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:13:05,259 INFO L87 Difference]: Start difference. First operand 1905 states and 2254 transitions. Second operand 15 states. [2020-08-18 16:13:06,586 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:13:06,843 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:07,096 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:07,332 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:13:08,440 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:10,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:13:10,509 INFO L93 Difference]: Finished difference Result 5225 states and 6429 transitions. [2020-08-18 16:13:10,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 16:13:10,513 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 307 [2020-08-18 16:13:10,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:13:10,532 INFO L225 Difference]: With dead ends: 5225 [2020-08-18 16:13:10,532 INFO L226 Difference]: Without dead ends: 3038 [2020-08-18 16:13:10,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 16:13:10,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2020-08-18 16:13:11,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2622. [2020-08-18 16:13:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2622 states. [2020-08-18 16:13:11,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3181 transitions. [2020-08-18 16:13:11,090 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3181 transitions. Word has length 307 [2020-08-18 16:13:11,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:13:11,091 INFO L479 AbstractCegarLoop]: Abstraction has 2622 states and 3181 transitions. [2020-08-18 16:13:11,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 16:13:11,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3181 transitions. [2020-08-18 16:13:11,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-08-18 16:13:11,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:13:11,108 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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] [2020-08-18 16:13:11,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:13:11,108 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:13:11,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:13:11,109 INFO L82 PathProgramCache]: Analyzing trace with hash -835338370, now seen corresponding path program 1 times [2020-08-18 16:13:11,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:13:11,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230701203] [2020-08-18 16:13:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:13:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,428 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:13:11,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:13:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:13:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:13:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:13:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:13:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:13:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:13:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 16:13:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:13:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:13:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:13:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 16:13:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:13:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:13:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-18 16:13:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-18 16:13:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 16:13:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 16:13:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-18 16:13:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 86 proven. 38 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-08-18 16:13:11,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230701203] [2020-08-18 16:13:11,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:13:11,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:13:11,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887504992] [2020-08-18 16:13:11,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:13:11,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:13:11,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:13:11,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:13:11,980 INFO L87 Difference]: Start difference. First operand 2622 states and 3181 transitions. Second operand 16 states. [2020-08-18 16:13:12,867 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:13:13,175 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:13,429 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:13,665 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:14,289 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:15,355 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:15,631 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:16,025 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:13:16,570 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:17,404 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:17,649 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:18,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:13:18,573 INFO L93 Difference]: Finished difference Result 5029 states and 6185 transitions. [2020-08-18 16:13:18,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 16:13:18,574 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 313 [2020-08-18 16:13:18,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:13:18,589 INFO L225 Difference]: With dead ends: 5029 [2020-08-18 16:13:18,589 INFO L226 Difference]: Without dead ends: 2630 [2020-08-18 16:13:18,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 16:13:18,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-08-18 16:13:19,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2557. [2020-08-18 16:13:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2557 states.