/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:53:01,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:53:01,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:53:01,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:53:01,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:53:01,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:53:01,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:53:01,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:53:01,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:53:01,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:53:01,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:53:01,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:53:01,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:53:01,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:53:01,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:53:01,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:53:01,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:53:01,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:53:01,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:53:01,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:53:01,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:53:01,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:53:01,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:53:01,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:53:01,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:53:01,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:53:01,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:53:01,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:53:01,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:53:01,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:53:01,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:53:01,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:53:01,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:53:01,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:53:01,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:53:01,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:53:01,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:53:01,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:53:01,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:53:01,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:53:01,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:53:01,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:53:01,281 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:53:01,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:53:01,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:53:01,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:53:01,284 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:53:01,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:53:01,284 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:53:01,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:53:01,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:53:01,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:53:01,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:53:01,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:53:01,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:53:01,287 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:53:01,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:53:01,287 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:53:01,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:53:01,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:53:01,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:53:01,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:53:01,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:53:01,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:53:01,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:53:01,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:53:01,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:53:01,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:53:01,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:53:01,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:53:01,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:53:01,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 20:53:01,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:53:01,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:53:01,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:53:01,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:53:01,612 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:53:01,613 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2020-08-18 20:53:01,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c92cf437/f489f8cd67a64afa8b74bd03ebbd724d/FLAG0535329df [2020-08-18 20:53:02,208 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:53:02,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2020-08-18 20:53:02,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c92cf437/f489f8cd67a64afa8b74bd03ebbd724d/FLAG0535329df [2020-08-18 20:53:02,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c92cf437/f489f8cd67a64afa8b74bd03ebbd724d [2020-08-18 20:53:02,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:53:02,541 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:53:02,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:53:02,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:53:02,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:53:02,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:53:02" (1/1) ... [2020-08-18 20:53:02,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bbef4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:53:02, skipping insertion in model container [2020-08-18 20:53:02,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:53:02" (1/1) ... [2020-08-18 20:53:02,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:53:02,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:53:02,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:53:03,071 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:53:03,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:53:03,235 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:53:03,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:53:03 WrapperNode [2020-08-18 20:53:03,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:53:03,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:53:03,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:53:03,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:53:03,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:53:03" (1/1) ... [2020-08-18 20:53:03,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:53:03" (1/1) ... [2020-08-18 20:53:03,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:53:03" (1/1) ... [2020-08-18 20:53:03,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:53:03" (1/1) ... [2020-08-18 20:53:03,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:53:03" (1/1) ... [2020-08-18 20:53:03,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:53:03" (1/1) ... [2020-08-18 20:53:03,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:53:03" (1/1) ... [2020-08-18 20:53:03,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:53:03,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:53:03,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:53:03,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:53:03,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:53:03" (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 20:53:03,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:53:03,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:53:03,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:53:03,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 20:53:03,386 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:53:03,386 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:53:03,387 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:53:03,387 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:53:03,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:53:03,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:53:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:53:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:53:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:53:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:53:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:53:03,389 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:53:03,389 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:53:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:53:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:53:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 20:53:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:53:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:53:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:53:03,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:53:03,391 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:53:03,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:53:03,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 20:53:03,392 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:53:03,392 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:53:03,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:53:03,392 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:53:03,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:53:03,393 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:53:03,393 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:53:03,393 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:53:03,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:53:03,393 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:53:03,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:53:03,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:53:03,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 20:53:03,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:53:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:53:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:53:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:53:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:53:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:53:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:53:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 20:53:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:53:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:53:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:53:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:53:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:53:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:53:03,397 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:53:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:53:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:53:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:53:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:53:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:53:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:53:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:53:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:53:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:53:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:53:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:53:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:53:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:53:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:53:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:53:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:53:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:53:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:53:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:53:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:53:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:53:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:53:03,403 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 20:53:03,403 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:53:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:53:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:53:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:53:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:53:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:53:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:53:03,404 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 20:53:03,405 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 20:53:03,405 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:53:03,405 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:53:03,405 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:53:03,405 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:53:03,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:53:03,405 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:53:03,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:53:03,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:53:03,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:53:04,512 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:53:04,513 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:53:04,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:53:04 BoogieIcfgContainer [2020-08-18 20:53:04,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:53:04,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:53:04,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:53:04,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:53:04,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:53:02" (1/3) ... [2020-08-18 20:53:04,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eae0a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:53:04, skipping insertion in model container [2020-08-18 20:53:04,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:53:03" (2/3) ... [2020-08-18 20:53:04,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eae0a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:53:04, skipping insertion in model container [2020-08-18 20:53:04,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:53:04" (3/3) ... [2020-08-18 20:53:04,532 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product57.cil.c [2020-08-18 20:53:04,543 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:53:04,551 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:53:04,564 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:53:04,585 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:53:04,585 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:53:04,585 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:53:04,585 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:53:04,586 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:53:04,586 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:53:04,586 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:53:04,586 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:53:04,607 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-18 20:53:04,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 20:53:04,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:53:04,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:53:04,618 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:53:04,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:53:04,624 INFO L82 PathProgramCache]: Analyzing trace with hash 135364863, now seen corresponding path program 1 times [2020-08-18 20:53:04,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:53:04,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834293083] [2020-08-18 20:53:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:53:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:05,329 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:53:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:53:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:05,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:53:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:05,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:53:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:05,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:05,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:53:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:53:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:53:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:53:05,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834293083] [2020-08-18 20:53:05,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:53:05,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:53:05,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507693576] [2020-08-18 20:53:05,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:53:05,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:53:05,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:53:05,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:53:05,507 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 3 states. [2020-08-18 20:53:06,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:53:06,646 INFO L93 Difference]: Finished difference Result 323 states and 418 transitions. [2020-08-18 20:53:06,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:53:06,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 20:53:06,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:53:06,663 INFO L225 Difference]: With dead ends: 323 [2020-08-18 20:53:06,663 INFO L226 Difference]: Without dead ends: 174 [2020-08-18 20:53:06,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:53:06,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-18 20:53:06,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2020-08-18 20:53:06,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 20:53:06,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2020-08-18 20:53:06,777 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 46 [2020-08-18 20:53:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:53:06,777 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2020-08-18 20:53:06,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:53:06,778 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2020-08-18 20:53:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 20:53:06,782 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:53:06,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:53:06,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:53:06,784 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:53:06,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:53:06,784 INFO L82 PathProgramCache]: Analyzing trace with hash 327228860, now seen corresponding path program 1 times [2020-08-18 20:53:06,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:53:06,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141639938] [2020-08-18 20:53:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:53:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:07,161 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:53:07,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:53:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:53:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:53:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:07,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:07,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:53:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:07,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:53:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:07,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:53:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:53:07,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141639938] [2020-08-18 20:53:07,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:53:07,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:53:07,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026026566] [2020-08-18 20:53:07,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:53:07,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:53:07,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:53:07,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:53:07,209 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 4 states. [2020-08-18 20:53:07,605 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:53:08,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:53:08,480 INFO L93 Difference]: Finished difference Result 256 states and 309 transitions. [2020-08-18 20:53:08,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:53:08,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 20:53:08,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:53:08,484 INFO L225 Difference]: With dead ends: 256 [2020-08-18 20:53:08,485 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 20:53:08,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:53:08,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 20:53:08,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-08-18 20:53:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-18 20:53:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2020-08-18 20:53:08,531 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 47 [2020-08-18 20:53:08,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:53:08,532 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2020-08-18 20:53:08,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:53:08,532 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2020-08-18 20:53:08,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:53:08,534 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:53:08,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:53:08,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:53:08,535 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:53:08,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:53:08,536 INFO L82 PathProgramCache]: Analyzing trace with hash -207054876, now seen corresponding path program 1 times [2020-08-18 20:53:08,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:53:08,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008638194] [2020-08-18 20:53:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:53:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:08,827 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:53:08,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:53:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:08,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:53:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:08,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:53:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:08,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:08,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:53:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:08,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:53:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:08,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:53:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:53:08,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008638194] [2020-08-18 20:53:08,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:53:08,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:53:08,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314617908] [2020-08-18 20:53:08,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:53:08,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:53:08,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:53:08,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:53:08,941 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand 8 states. [2020-08-18 20:53:09,265 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:53:09,602 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:53:09,821 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:53:10,051 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:53:11,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:53:11,345 INFO L93 Difference]: Finished difference Result 265 states and 323 transitions. [2020-08-18 20:53:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:53:11,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 20:53:11,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:53:11,350 INFO L225 Difference]: With dead ends: 265 [2020-08-18 20:53:11,350 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 20:53:11,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:53:11,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 20:53:11,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-08-18 20:53:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-18 20:53:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2020-08-18 20:53:11,396 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 51 [2020-08-18 20:53:11,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:53:11,397 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2020-08-18 20:53:11,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:53:11,397 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2020-08-18 20:53:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 20:53:11,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:53:11,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:53:11,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:53:11,401 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:53:11,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:53:11,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1468702982, now seen corresponding path program 1 times [2020-08-18 20:53:11,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:53:11,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156579194] [2020-08-18 20:53:11,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:53:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:11,687 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:53:11,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:53:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:11,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:53:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:11,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:53:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:11,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:11,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:53:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:11,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:53:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:11,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:11,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:11,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 20:53:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:11,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 20:53:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:53:11,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156579194] [2020-08-18 20:53:11,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:53:11,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:53:11,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262035789] [2020-08-18 20:53:11,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:53:11,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:53:11,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:53:11,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:53:11,800 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 6 states. [2020-08-18 20:53:12,171 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:53:13,253 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:53:13,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:53:13,965 INFO L93 Difference]: Finished difference Result 357 states and 439 transitions. [2020-08-18 20:53:13,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:53:13,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-18 20:53:13,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:53:13,971 INFO L225 Difference]: With dead ends: 357 [2020-08-18 20:53:13,971 INFO L226 Difference]: Without dead ends: 250 [2020-08-18 20:53:13,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:53:13,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-08-18 20:53:14,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 209. [2020-08-18 20:53:14,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-18 20:53:14,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 238 transitions. [2020-08-18 20:53:14,028 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 238 transitions. Word has length 64 [2020-08-18 20:53:14,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:53:14,028 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 238 transitions. [2020-08-18 20:53:14,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:53:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 238 transitions. [2020-08-18 20:53:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 20:53:14,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:53:14,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:53:14,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:53:14,031 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:53:14,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:53:14,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1930431345, now seen corresponding path program 1 times [2020-08-18 20:53:14,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:53:14,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556919381] [2020-08-18 20:53:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:53:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:14,309 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:53:14,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:53:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:14,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:53:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:14,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:53:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:14,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:14,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:53:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:14,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:53:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:14,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:14,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:14,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:14,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:53:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 20:53:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:14,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:53:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:53:14,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556919381] [2020-08-18 20:53:14,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:53:14,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:53:14,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035957311] [2020-08-18 20:53:14,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:53:14,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:53:14,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:53:14,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:53:14,452 INFO L87 Difference]: Start difference. First operand 209 states and 238 transitions. Second operand 8 states. [2020-08-18 20:53:14,770 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:53:15,650 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:53:15,966 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:53:16,500 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:53:16,723 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:53:16,978 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:53:17,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:53:17,938 INFO L93 Difference]: Finished difference Result 622 states and 764 transitions. [2020-08-18 20:53:17,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:53:17,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-18 20:53:17,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:53:17,951 INFO L225 Difference]: With dead ends: 622 [2020-08-18 20:53:17,951 INFO L226 Difference]: Without dead ends: 437 [2020-08-18 20:53:17,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:53:17,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-08-18 20:53:18,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 373. [2020-08-18 20:53:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-18 20:53:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 426 transitions. [2020-08-18 20:53:18,049 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 426 transitions. Word has length 78 [2020-08-18 20:53:18,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:53:18,050 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 426 transitions. [2020-08-18 20:53:18,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:53:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 426 transitions. [2020-08-18 20:53:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 20:53:18,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:53:18,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:53:18,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:53:18,052 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:53:18,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:53:18,053 INFO L82 PathProgramCache]: Analyzing trace with hash -613018165, now seen corresponding path program 1 times [2020-08-18 20:53:18,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:53:18,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270679970] [2020-08-18 20:53:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:53:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:18,321 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:53:18,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:53:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:18,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:53:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:18,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:53:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:18,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:18,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:53:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:18,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:53:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:18,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:53:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:18,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:18,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:18,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:18,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:53:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:18,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 20:53:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:18,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:53:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:53:18,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270679970] [2020-08-18 20:53:18,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:53:18,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:53:18,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402643134] [2020-08-18 20:53:18,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:53:18,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:53:18,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:53:18,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:53:18,447 INFO L87 Difference]: Start difference. First operand 373 states and 426 transitions. Second operand 9 states. [2020-08-18 20:53:18,756 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:53:19,876 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:53:20,160 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:53:21,157 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:53:21,393 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:53:21,625 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:53:21,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:53:21,845 INFO L93 Difference]: Finished difference Result 476 states and 594 transitions. [2020-08-18 20:53:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:53:21,846 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-18 20:53:21,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:53:21,850 INFO L225 Difference]: With dead ends: 476 [2020-08-18 20:53:21,850 INFO L226 Difference]: Without dead ends: 473 [2020-08-18 20:53:21,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 20:53:21,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-08-18 20:53:21,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 373. [2020-08-18 20:53:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-18 20:53:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 425 transitions. [2020-08-18 20:53:21,923 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 425 transitions. Word has length 82 [2020-08-18 20:53:21,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:53:21,924 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 425 transitions. [2020-08-18 20:53:21,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:53:21,924 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 425 transitions. [2020-08-18 20:53:21,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 20:53:21,926 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:53:21,926 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] [2020-08-18 20:53:21,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:53:21,927 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:53:21,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:53:21,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1664141551, now seen corresponding path program 1 times [2020-08-18 20:53:21,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:53:21,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840429925] [2020-08-18 20:53:21,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:53:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,145 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:53:22,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:53:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:53:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:53:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:53:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:53:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:53:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:53:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:53:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 20:53:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:22,321 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 20:53:22,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840429925] [2020-08-18 20:53:22,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:53:22,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:53:22,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945551558] [2020-08-18 20:53:22,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:53:22,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:53:22,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:53:22,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:53:22,324 INFO L87 Difference]: Start difference. First operand 373 states and 425 transitions. Second operand 9 states. [2020-08-18 20:53:23,117 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:53:23,347 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:53:23,570 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:53:23,794 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:53:24,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:53:24,856 INFO L93 Difference]: Finished difference Result 830 states and 1028 transitions. [2020-08-18 20:53:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:53:24,859 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-18 20:53:24,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:53:24,863 INFO L225 Difference]: With dead ends: 830 [2020-08-18 20:53:24,864 INFO L226 Difference]: Without dead ends: 481 [2020-08-18 20:53:24,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:53:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-08-18 20:53:24,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 383. [2020-08-18 20:53:24,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-08-18 20:53:24,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 435 transitions. [2020-08-18 20:53:24,941 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 435 transitions. Word has length 98 [2020-08-18 20:53:24,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:53:24,941 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 435 transitions. [2020-08-18 20:53:24,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:53:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 435 transitions. [2020-08-18 20:53:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 20:53:24,944 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:53:24,944 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] [2020-08-18 20:53:24,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:53:24,944 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:53:24,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:53:24,945 INFO L82 PathProgramCache]: Analyzing trace with hash -770655213, now seen corresponding path program 1 times [2020-08-18 20:53:24,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:53:24,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066034836] [2020-08-18 20:53:24,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:53:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,172 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:53:25,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:53:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:53:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:53:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:53:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:53:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:53:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:53:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:53:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 20:53:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:25,317 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 20:53:25,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066034836] [2020-08-18 20:53:25,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:53:25,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 20:53:25,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384111495] [2020-08-18 20:53:25,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 20:53:25,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:53:25,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 20:53:25,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:53:25,320 INFO L87 Difference]: Start difference. First operand 383 states and 435 transitions. Second operand 11 states. [2020-08-18 20:53:25,809 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:53:26,031 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:53:26,244 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:53:26,809 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:53:27,046 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:53:27,283 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:53:28,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:53:28,438 INFO L93 Difference]: Finished difference Result 850 states and 1050 transitions. [2020-08-18 20:53:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:53:28,439 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-18 20:53:28,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:53:28,448 INFO L225 Difference]: With dead ends: 850 [2020-08-18 20:53:28,448 INFO L226 Difference]: Without dead ends: 491 [2020-08-18 20:53:28,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:53:28,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-08-18 20:53:28,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 391. [2020-08-18 20:53:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-18 20:53:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 443 transitions. [2020-08-18 20:53:28,536 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 443 transitions. Word has length 98 [2020-08-18 20:53:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:53:28,537 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 443 transitions. [2020-08-18 20:53:28,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 20:53:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 443 transitions. [2020-08-18 20:53:28,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 20:53:28,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:53:28,543 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] [2020-08-18 20:53:28,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:53:28,544 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:53:28,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:53:28,544 INFO L82 PathProgramCache]: Analyzing trace with hash -778414572, now seen corresponding path program 1 times [2020-08-18 20:53:28,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:53:28,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807383099] [2020-08-18 20:53:28,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:53:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,822 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:53:28,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:53:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:53:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:53:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:53:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:53:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:53:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:53:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:53:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 20:53:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:28,973 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 20:53:28,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807383099] [2020-08-18 20:53:28,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:53:28,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:53:28,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919635070] [2020-08-18 20:53:28,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:53:28,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:53:28,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:53:28,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:53:28,976 INFO L87 Difference]: Start difference. First operand 391 states and 443 transitions. Second operand 7 states. [2020-08-18 20:53:29,296 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:53:29,826 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:53:31,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:53:31,825 INFO L93 Difference]: Finished difference Result 1153 states and 1472 transitions. [2020-08-18 20:53:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 20:53:31,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-18 20:53:31,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:53:31,832 INFO L225 Difference]: With dead ends: 1153 [2020-08-18 20:53:31,832 INFO L226 Difference]: Without dead ends: 786 [2020-08-18 20:53:31,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:53:31,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-08-18 20:53:31,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 687. [2020-08-18 20:53:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-08-18 20:53:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 813 transitions. [2020-08-18 20:53:31,948 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 813 transitions. Word has length 98 [2020-08-18 20:53:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:53:31,948 INFO L479 AbstractCegarLoop]: Abstraction has 687 states and 813 transitions. [2020-08-18 20:53:31,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:53:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 813 transitions. [2020-08-18 20:53:31,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 20:53:31,950 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:53:31,950 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:53:31,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:53:31,951 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:53:31,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:53:31,951 INFO L82 PathProgramCache]: Analyzing trace with hash 469491758, now seen corresponding path program 1 times [2020-08-18 20:53:31,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:53:31,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081844178] [2020-08-18 20:53:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:53:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,250 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:53:32,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:53:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:53:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:53:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:53:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:53:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:53:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:53:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:53:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 20:53:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 20:53:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 20:53:32,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081844178] [2020-08-18 20:53:32,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:53:32,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 20:53:32,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934750421] [2020-08-18 20:53:32,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 20:53:32,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:53:32,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 20:53:32,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 20:53:32,739 INFO L87 Difference]: Start difference. First operand 687 states and 813 transitions. Second operand 17 states. [2020-08-18 20:53:33,439 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:53:33,911 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:53:34,307 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:53:34,546 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:53:35,165 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:53:36,053 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:53:36,360 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:53:36,631 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:53:36,905 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:53:37,203 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:53:37,466 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:53:37,992 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 20:53:38,523 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 20:53:40,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:53:40,527 INFO L93 Difference]: Finished difference Result 1418 states and 1746 transitions. [2020-08-18 20:53:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 20:53:40,528 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2020-08-18 20:53:40,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:53:40,533 INFO L225 Difference]: With dead ends: 1418 [2020-08-18 20:53:40,533 INFO L226 Difference]: Without dead ends: 755 [2020-08-18 20:53:40,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 20:53:40,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2020-08-18 20:53:40,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 659. [2020-08-18 20:53:40,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-08-18 20:53:40,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 767 transitions. [2020-08-18 20:53:40,648 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 767 transitions. Word has length 102 [2020-08-18 20:53:40,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:53:40,649 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 767 transitions. [2020-08-18 20:53:40,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 20:53:40,649 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 767 transitions. [2020-08-18 20:53:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 20:53:40,652 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:53:40,652 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:53:40,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:53:40,653 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:53:40,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:53:40,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1698521745, now seen corresponding path program 1 times [2020-08-18 20:53:40,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:53:40,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536498525] [2020-08-18 20:53:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:53:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:40,963 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:53:40,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:53:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:40,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:53:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:40,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:53:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:40,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:40,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:53:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:53:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:53:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:53:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:53:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 20:53:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 20:53:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 20:53:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:53:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 20:53:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 20:53:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 20:53:41,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536498525] [2020-08-18 20:53:41,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:53:41,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 20:53:41,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493868768] [2020-08-18 20:53:41,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 20:53:41,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:53:41,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 20:53:41,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:53:41,369 INFO L87 Difference]: Start difference. First operand 659 states and 767 transitions. Second operand 14 states. [2020-08-18 20:53:41,825 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:53:42,455 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:53:44,236 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-18 20:53:44,712 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-08-18 20:53:45,184 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-08-18 20:53:46,013 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:53:46,273 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:53:46,516 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:53:46,752 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:53:48,340 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2020-08-18 20:53:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:53:49,250 INFO L93 Difference]: Finished difference Result 2026 states and 2659 transitions. [2020-08-18 20:53:49,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-18 20:53:49,251 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-18 20:53:49,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:53:49,263 INFO L225 Difference]: With dead ends: 2026 [2020-08-18 20:53:49,263 INFO L226 Difference]: Without dead ends: 1515 [2020-08-18 20:53:49,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=397, Invalid=1495, Unknown=0, NotChecked=0, Total=1892 [2020-08-18 20:53:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-08-18 20:53:49,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1215. [2020-08-18 20:53:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-08-18 20:53:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1429 transitions. [2020-08-18 20:53:49,533 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1429 transitions. Word has length 155 [2020-08-18 20:53:49,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:53:49,536 INFO L479 AbstractCegarLoop]: Abstraction has 1215 states and 1429 transitions. [2020-08-18 20:53:49,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 20:53:49,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1429 transitions. [2020-08-18 20:53:49,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 20:53:49,541 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:53:49,542 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:53:49,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:53:49,542 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:53:49,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:53:49,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1973281359, now seen corresponding path program 1 times [2020-08-18 20:53:49,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:53:49,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733113671] [2020-08-18 20:53:49,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:53:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,873 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:53:49,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:53:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:53:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:53:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:53:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:53:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:53:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:53:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:53:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:53:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 20:53:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 20:53:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:49,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 20:53:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:50,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:53:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:50,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:53:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:50,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:53:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:50,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 20:53:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 20:53:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:53:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 20:53:50,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733113671] [2020-08-18 20:53:50,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:53:50,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 20:53:50,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095002360] [2020-08-18 20:53:50,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 20:53:50,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:53:50,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 20:53:50,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:53:50,114 INFO L87 Difference]: Start difference. First operand 1215 states and 1429 transitions. Second operand 14 states. [2020-08-18 20:53:50,629 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:53:50,872 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:53:51,148 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:53:52,551 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:53:52,791 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:53:53,019 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:53:53,243 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:53:53,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:53:53,469 INFO L93 Difference]: Finished difference Result 1687 states and 2024 transitions. [2020-08-18 20:53:53,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:53:53,469 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-18 20:53:53,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:53:53,472 INFO L225 Difference]: With dead ends: 1687 [2020-08-18 20:53:53,473 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 20:53:53,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-08-18 20:53:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 20:53:53,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 20:53:53,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 20:53:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 20:53:53,479 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2020-08-18 20:53:53,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:53:53,480 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 20:53:53,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 20:53:53,480 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 20:53:53,480 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 20:53:53,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 20:53:53,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 20:53:54,178 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 203 [2020-08-18 20:53:56,371 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 318 DAG size of output: 285 [2020-08-18 20:53:57,720 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 286