/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:46:20,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:46:20,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:46:20,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:46:20,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:46:20,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:46:20,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:46:20,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:46:20,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:46:20,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:46:20,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:46:20,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:46:20,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:46:20,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:46:20,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:46:20,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:46:20,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:46:20,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:46:20,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:46:20,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:46:20,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:46:20,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:46:20,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:46:20,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:46:20,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:46:20,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:46:20,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:46:20,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:46:20,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:46:20,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:46:20,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:46:20,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:46:20,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:46:20,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:46:20,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:46:20,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:46:20,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:46:20,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:46:20,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:46:20,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:46:20,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:46:20,266 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 [2020-08-19 01:46:20,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:46:20,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:46:20,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:46:20,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:46:20,289 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:46:20,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:46:20,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:46:20,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:46:20,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:46:20,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:46:20,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:46:20,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:46:20,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:46:20,291 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:46:20,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:46:20,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:46:20,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:46:20,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:46:20,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:46:20,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:46:20,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:46:20,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:46:20,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:46:20,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:46:20,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:46:20,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:46:20,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:46:20,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:46:20,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:46:20,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:46:20,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:46:20,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:46:20,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:46:20,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:46:20,609 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:46:20,610 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-08-19 01:46:20,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fed30e25/e8ac014e084b42ff8aaa063fc86c02e2/FLAG97d09467a [2020-08-19 01:46:21,219 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:46:21,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-08-19 01:46:21,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fed30e25/e8ac014e084b42ff8aaa063fc86c02e2/FLAG97d09467a [2020-08-19 01:46:21,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fed30e25/e8ac014e084b42ff8aaa063fc86c02e2 [2020-08-19 01:46:21,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:46:21,521 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:46:21,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:46:21,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:46:21,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:46:21,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:46:21" (1/1) ... [2020-08-19 01:46:21,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35272ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:46:21, skipping insertion in model container [2020-08-19 01:46:21,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:46:21" (1/1) ... [2020-08-19 01:46:21,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:46:21,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:46:22,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:46:22,044 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:46:22,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:46:22,184 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:46:22,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:46:22 WrapperNode [2020-08-19 01:46:22,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:46:22,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:46:22,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:46:22,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:46:22,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:46:22" (1/1) ... [2020-08-19 01:46:22,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:46:22" (1/1) ... [2020-08-19 01:46:22,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:46:22" (1/1) ... [2020-08-19 01:46:22,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:46:22" (1/1) ... [2020-08-19 01:46:22,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:46:22" (1/1) ... [2020-08-19 01:46:22,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:46:22" (1/1) ... [2020-08-19 01:46:22,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:46:22" (1/1) ... [2020-08-19 01:46:22,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:46:22,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:46:22,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:46:22,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:46:22,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:46:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:46:22,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:46:22,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:46:22,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:46:22,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:46:22,405 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:46:22,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:46:22,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:46:22,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:46:22,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:46:22,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:46:22,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:46:22,408 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:46:22,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:46:22,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:46:22,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 01:46:22,409 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:46:22,410 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:46:22,410 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:46:22,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:46:22,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:46:22,410 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:46:22,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:46:22,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 01:46:22,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 01:46:22,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 01:46:22,411 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:46:22,412 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:46:22,412 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:46:22,412 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:46:22,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:46:22,413 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:46:22,413 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:46:22,413 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:46:22,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:46:22,413 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:46:22,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:46:22,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:46:22,414 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 01:46:22,414 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:46:22,414 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:46:22,414 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:46:22,414 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:46:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:46:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:46:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:46:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:46:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:46:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:46:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:46:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:46:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:46:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:46:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:46:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:46:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:46:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:46:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:46:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:46:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:46:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:46:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:46:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:46:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:46:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:46:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:46:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:46:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:46:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:46:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:46:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:46:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:46:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:46:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 01:46:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:46:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:46:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:46:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:46:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 01:46:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:46:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:46:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:46:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:46:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 01:46:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 01:46:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:46:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 01:46:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:46:22,425 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:46:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:46:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:46:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:46:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:46:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:46:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:46:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:46:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:46:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:46:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:46:25,521 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:46:25,521 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:46:25,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:46:25 BoogieIcfgContainer [2020-08-19 01:46:25,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:46:25,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:46:25,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:46:25,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:46:25,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:46:21" (1/3) ... [2020-08-19 01:46:25,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68660f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:46:25, skipping insertion in model container [2020-08-19 01:46:25,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:46:22" (2/3) ... [2020-08-19 01:46:25,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68660f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:46:25, skipping insertion in model container [2020-08-19 01:46:25,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:46:25" (3/3) ... [2020-08-19 01:46:25,544 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product53.cil.c [2020-08-19 01:46:25,554 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:46:25,565 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:46:25,579 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:46:25,610 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:46:25,610 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:46:25,610 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:46:25,610 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:46:25,611 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:46:25,611 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:46:25,611 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:46:25,611 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:46:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-08-19 01:46:25,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 01:46:25,645 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:46:25,646 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] [2020-08-19 01:46:25,646 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:46:25,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:46:25,653 INFO L82 PathProgramCache]: Analyzing trace with hash 805370938, now seen corresponding path program 1 times [2020-08-19 01:46:25,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:46:25,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498355281] [2020-08-19 01:46:25,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:46:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:26,349 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:46:26,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:46:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:26,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:46:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:26,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:46:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:26,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:46:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:26,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:46:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:46:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:26,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:46:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:26,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:46:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:46:26,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498355281] [2020-08-19 01:46:26,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:46:26,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:46:26,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002228576] [2020-08-19 01:46:26,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:46:26,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:46:26,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:46:26,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:46:26,489 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2020-08-19 01:46:27,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:46:27,775 INFO L93 Difference]: Finished difference Result 328 states and 428 transitions. [2020-08-19 01:46:27,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:46:27,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 01:46:27,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:46:27,794 INFO L225 Difference]: With dead ends: 328 [2020-08-19 01:46:27,794 INFO L226 Difference]: Without dead ends: 181 [2020-08-19 01:46:27,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:46:27,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-19 01:46:27,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2020-08-19 01:46:27,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-19 01:46:27,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2020-08-19 01:46:27,900 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 51 [2020-08-19 01:46:27,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:46:27,901 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2020-08-19 01:46:27,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:46:27,901 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2020-08-19 01:46:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 01:46:27,905 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:46:27,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:46:27,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:46:27,906 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:46:27,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:46:27,906 INFO L82 PathProgramCache]: Analyzing trace with hash -239223915, now seen corresponding path program 1 times [2020-08-19 01:46:27,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:46:27,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038734713] [2020-08-19 01:46:27,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:46:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:28,303 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:46:28,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:46:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:28,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:46:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:28,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:46:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:28,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:46:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:28,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:46:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:28,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:46:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:28,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:46:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:28,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:46:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:46:28,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038734713] [2020-08-19 01:46:28,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:46:28,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:46:28,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713543726] [2020-08-19 01:46:28,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:46:28,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:46:28,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:46:28,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:46:28,366 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand 5 states. [2020-08-19 01:46:28,886 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:46:29,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:46:29,852 INFO L93 Difference]: Finished difference Result 273 states and 339 transitions. [2020-08-19 01:46:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:46:29,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 01:46:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:46:29,856 INFO L225 Difference]: With dead ends: 273 [2020-08-19 01:46:29,857 INFO L226 Difference]: Without dead ends: 171 [2020-08-19 01:46:29,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:46:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-19 01:46:29,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-19 01:46:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-19 01:46:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-19 01:46:29,901 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 52 [2020-08-19 01:46:29,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:46:29,901 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-19 01:46:29,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:46:29,902 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-19 01:46:29,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 01:46:29,904 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:46:29,904 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] [2020-08-19 01:46:29,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:46:29,905 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:46:29,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:46:29,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2031785454, now seen corresponding path program 1 times [2020-08-19 01:46:29,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:46:29,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132259551] [2020-08-19 01:46:29,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:46:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:30,218 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:46:30,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:46:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:30,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:46:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:30,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:46:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:30,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:46:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:30,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:46:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:30,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:46:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:30,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:46:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:30,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:46:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:46:30,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132259551] [2020-08-19 01:46:30,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:46:30,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:46:30,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374734224] [2020-08-19 01:46:30,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:46:30,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:46:30,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:46:30,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:46:30,300 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 9 states. [2020-08-19 01:46:30,769 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:46:31,098 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:46:31,339 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:46:31,582 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:46:32,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:46:32,990 INFO L93 Difference]: Finished difference Result 282 states and 354 transitions. [2020-08-19 01:46:32,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:46:32,990 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-19 01:46:32,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:46:32,996 INFO L225 Difference]: With dead ends: 282 [2020-08-19 01:46:32,999 INFO L226 Difference]: Without dead ends: 171 [2020-08-19 01:46:33,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:46:33,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-19 01:46:33,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-19 01:46:33,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-19 01:46:33,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2020-08-19 01:46:33,075 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 56 [2020-08-19 01:46:33,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:46:33,077 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2020-08-19 01:46:33,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:46:33,078 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2020-08-19 01:46:33,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 01:46:33,082 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:46:33,082 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] [2020-08-19 01:46:33,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:46:33,082 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:46:33,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:46:33,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1519881096, now seen corresponding path program 1 times [2020-08-19 01:46:33,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:46:33,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793322842] [2020-08-19 01:46:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:46:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:33,368 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:46:33,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:46:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:33,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:46:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:33,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:46:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:33,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:46:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:33,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:46:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:33,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:46:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:33,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:46:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:33,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:33,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:33,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:33,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 01:46:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:33,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 01:46:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:46:33,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793322842] [2020-08-19 01:46:33,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:46:33,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:46:33,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586519154] [2020-08-19 01:46:33,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:46:33,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:46:33,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:46:33,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:46:33,502 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand 7 states. [2020-08-19 01:46:33,913 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:46:35,131 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:46:35,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:46:35,929 INFO L93 Difference]: Finished difference Result 382 states and 483 transitions. [2020-08-19 01:46:35,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:46:35,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-08-19 01:46:35,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:46:35,936 INFO L225 Difference]: With dead ends: 382 [2020-08-19 01:46:35,936 INFO L226 Difference]: Without dead ends: 271 [2020-08-19 01:46:35,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:46:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-19 01:46:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 225. [2020-08-19 01:46:35,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-08-19 01:46:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 258 transitions. [2020-08-19 01:46:35,986 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 258 transitions. Word has length 74 [2020-08-19 01:46:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:46:35,987 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 258 transitions. [2020-08-19 01:46:35,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:46:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 258 transitions. [2020-08-19 01:46:35,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 01:46:35,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:46:35,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:46:35,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:46:35,989 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:46:35,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:46:35,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1815815577, now seen corresponding path program 1 times [2020-08-19 01:46:35,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:46:35,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903203098] [2020-08-19 01:46:35,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:46:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,263 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:46:36,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:46:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:46:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:46:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:46:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:46:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:46:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:46:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:46:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:46:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 01:46:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 01:46:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:46:36,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903203098] [2020-08-19 01:46:36,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:46:36,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:46:36,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408316675] [2020-08-19 01:46:36,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:46:36,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:46:36,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:46:36,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:46:36,427 INFO L87 Difference]: Start difference. First operand 225 states and 258 transitions. Second operand 9 states. [2020-08-19 01:46:36,891 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:46:38,163 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:46:38,466 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:46:38,734 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:46:38,954 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:46:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:46:40,291 INFO L93 Difference]: Finished difference Result 666 states and 830 transitions. [2020-08-19 01:46:40,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 01:46:40,293 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-19 01:46:40,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:46:40,297 INFO L225 Difference]: With dead ends: 666 [2020-08-19 01:46:40,297 INFO L226 Difference]: Without dead ends: 469 [2020-08-19 01:46:40,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 01:46:40,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-08-19 01:46:40,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 398. [2020-08-19 01:46:40,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-08-19 01:46:40,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 456 transitions. [2020-08-19 01:46:40,378 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 456 transitions. Word has length 88 [2020-08-19 01:46:40,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:46:40,379 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 456 transitions. [2020-08-19 01:46:40,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:46:40,379 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 456 transitions. [2020-08-19 01:46:40,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 01:46:40,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:46:40,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:46:40,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:46:40,382 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:46:40,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:46:40,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1743532533, now seen corresponding path program 1 times [2020-08-19 01:46:40,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:46:40,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087098631] [2020-08-19 01:46:40,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:46:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,650 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:46:40,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:46:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:46:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:46:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:46:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:46:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:46:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 01:46:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:46:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:46:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:46:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 01:46:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 01:46:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:40,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:46:40,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087098631] [2020-08-19 01:46:40,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:46:40,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 01:46:40,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497614371] [2020-08-19 01:46:40,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:46:40,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:46:40,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:46:40,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:46:40,814 INFO L87 Difference]: Start difference. First operand 398 states and 456 transitions. Second operand 10 states. [2020-08-19 01:46:41,311 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:46:42,546 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:46:42,778 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:46:43,027 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:46:43,295 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:46:44,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:46:44,566 INFO L93 Difference]: Finished difference Result 874 states and 1071 transitions. [2020-08-19 01:46:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 01:46:44,567 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-19 01:46:44,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:46:44,572 INFO L225 Difference]: With dead ends: 874 [2020-08-19 01:46:44,573 INFO L226 Difference]: Without dead ends: 504 [2020-08-19 01:46:44,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 01:46:44,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-08-19 01:46:44,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 397. [2020-08-19 01:46:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-19 01:46:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 453 transitions. [2020-08-19 01:46:44,650 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 453 transitions. Word has length 92 [2020-08-19 01:46:44,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:46:44,651 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 453 transitions. [2020-08-19 01:46:44,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:46:44,651 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 453 transitions. [2020-08-19 01:46:44,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 01:46:44,653 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:46:44,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:46:44,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:46:44,653 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:46:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:46:44,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1672267508, now seen corresponding path program 1 times [2020-08-19 01:46:44,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:46:44,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498882228] [2020-08-19 01:46:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:46:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:44,899 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:46:44,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:46:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:46:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:44,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:46:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:44,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:46:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:44,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:46:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:44,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:46:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:44,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 01:46:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:44,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:46:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:44,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:44,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:44,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:45,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:46:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:45,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:46:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:45,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 01:46:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:45,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 01:46:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:46:45,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498882228] [2020-08-19 01:46:45,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:46:45,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 01:46:45,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534414125] [2020-08-19 01:46:45,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:46:45,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:46:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:46:45,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:46:45,092 INFO L87 Difference]: Start difference. First operand 397 states and 453 transitions. Second operand 10 states. [2020-08-19 01:46:46,099 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:46:46,335 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:46:46,577 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:46:46,808 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:46:47,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:46:47,980 INFO L93 Difference]: Finished difference Result 877 states and 1082 transitions. [2020-08-19 01:46:47,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:46:47,981 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-19 01:46:47,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:46:47,984 INFO L225 Difference]: With dead ends: 877 [2020-08-19 01:46:47,984 INFO L226 Difference]: Without dead ends: 508 [2020-08-19 01:46:47,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:46:47,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-19 01:46:48,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 407. [2020-08-19 01:46:48,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-08-19 01:46:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 463 transitions. [2020-08-19 01:46:48,064 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 463 transitions. Word has length 93 [2020-08-19 01:46:48,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:46:48,064 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 463 transitions. [2020-08-19 01:46:48,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:46:48,064 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 463 transitions. [2020-08-19 01:46:48,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 01:46:48,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:46:48,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:46:48,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:46:48,067 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:46:48,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:46:48,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1599880950, now seen corresponding path program 1 times [2020-08-19 01:46:48,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:46:48,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074923641] [2020-08-19 01:46:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:46:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,312 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:46:48,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:46:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:46:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:46:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:46:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:46:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:46:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 01:46:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:46:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:46:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:46:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 01:46:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 01:46:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:46:48,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074923641] [2020-08-19 01:46:48,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:46:48,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:46:48,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3030271] [2020-08-19 01:46:48,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:46:48,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:46:48,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:46:48,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:46:48,487 INFO L87 Difference]: Start difference. First operand 407 states and 463 transitions. Second operand 12 states. [2020-08-19 01:46:49,154 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:46:49,403 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:46:49,637 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:46:50,268 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:46:50,509 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:46:50,747 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:46:52,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:46:52,159 INFO L93 Difference]: Finished difference Result 901 states and 1126 transitions. [2020-08-19 01:46:52,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:46:52,160 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-19 01:46:52,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:46:52,167 INFO L225 Difference]: With dead ends: 901 [2020-08-19 01:46:52,167 INFO L226 Difference]: Without dead ends: 522 [2020-08-19 01:46:52,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 01:46:52,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-08-19 01:46:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 415. [2020-08-19 01:46:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-19 01:46:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 471 transitions. [2020-08-19 01:46:52,283 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 471 transitions. Word has length 93 [2020-08-19 01:46:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:46:52,290 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 471 transitions. [2020-08-19 01:46:52,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:46:52,290 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 471 transitions. [2020-08-19 01:46:52,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 01:46:52,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:46:52,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:46:52,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:46:52,295 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:46:52,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:46:52,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1929646711, now seen corresponding path program 1 times [2020-08-19 01:46:52,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:46:52,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844873726] [2020-08-19 01:46:52,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:46:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,608 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:46:52,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:46:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:46:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:46:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:46:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:46:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:46:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 01:46:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:46:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:46:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:46:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 01:46:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 01:46:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:46:52,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844873726] [2020-08-19 01:46:52,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:46:52,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:46:52,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878549013] [2020-08-19 01:46:52,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:46:52,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:46:52,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:46:52,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:46:52,771 INFO L87 Difference]: Start difference. First operand 415 states and 471 transitions. Second operand 8 states. [2020-08-19 01:46:53,298 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:46:54,112 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:46:56,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:46:56,520 INFO L93 Difference]: Finished difference Result 1240 states and 1603 transitions. [2020-08-19 01:46:56,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 01:46:56,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 01:46:56,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:46:56,527 INFO L225 Difference]: With dead ends: 1240 [2020-08-19 01:46:56,527 INFO L226 Difference]: Without dead ends: 853 [2020-08-19 01:46:56,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-19 01:46:56,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-08-19 01:46:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 721. [2020-08-19 01:46:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-08-19 01:46:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 849 transitions. [2020-08-19 01:46:56,641 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 849 transitions. Word has length 93 [2020-08-19 01:46:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:46:56,641 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 849 transitions. [2020-08-19 01:46:56,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:46:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 849 transitions. [2020-08-19 01:46:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 01:46:56,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:46:56,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:46:56,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:46:56,644 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:46:56,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:46:56,644 INFO L82 PathProgramCache]: Analyzing trace with hash 446997693, now seen corresponding path program 1 times [2020-08-19 01:46:56,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:46:56,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938874951] [2020-08-19 01:46:56,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:46:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,889 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:46:56,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:46:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:46:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:46:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:46:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:46:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:46:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:46:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:46:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:46:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:46:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:46:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:46:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 01:46:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:56,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 01:46:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:46:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:46:57,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938874951] [2020-08-19 01:46:57,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:46:57,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:46:57,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431184253] [2020-08-19 01:46:57,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:46:57,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:46:57,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:46:57,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:46:57,011 INFO L87 Difference]: Start difference. First operand 721 states and 849 transitions. Second operand 8 states. [2020-08-19 01:46:57,504 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:47:00,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:47:00,018 INFO L93 Difference]: Finished difference Result 1414 states and 1816 transitions. [2020-08-19 01:47:00,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 01:47:00,019 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-08-19 01:47:00,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:47:00,028 INFO L225 Difference]: With dead ends: 1414 [2020-08-19 01:47:00,028 INFO L226 Difference]: Without dead ends: 1411 [2020-08-19 01:47:00,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-08-19 01:47:00,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2020-08-19 01:47:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1213. [2020-08-19 01:47:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-08-19 01:47:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1442 transitions. [2020-08-19 01:47:00,241 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1442 transitions. Word has length 97 [2020-08-19 01:47:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:47:00,242 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 1442 transitions. [2020-08-19 01:47:00,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:47:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1442 transitions. [2020-08-19 01:47:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-19 01:47:00,246 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:47:00,247 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:47:00,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:47:00,247 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:47:00,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:47:00,248 INFO L82 PathProgramCache]: Analyzing trace with hash 350097324, now seen corresponding path program 1 times [2020-08-19 01:47:00,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:47:00,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979983599] [2020-08-19 01:47:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:47:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,512 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:47:00,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:47:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:47:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:47:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:47:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:47:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:47:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:47:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:47:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:47:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:47:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:47:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 01:47:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:47:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:47:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 01:47:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:47:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:47:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 01:47:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-19 01:47:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-19 01:47:00,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979983599] [2020-08-19 01:47:00,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:47:00,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:47:00,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705199245] [2020-08-19 01:47:00,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:47:00,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:47:00,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:47:00,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:47:00,771 INFO L87 Difference]: Start difference. First operand 1213 states and 1442 transitions. Second operand 13 states. [2020-08-19 01:47:01,403 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:47:01,672 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:47:01,909 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:47:02,924 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:47:04,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:47:04,870 INFO L93 Difference]: Finished difference Result 2164 states and 2684 transitions. [2020-08-19 01:47:04,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 01:47:04,871 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 160 [2020-08-19 01:47:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:47:04,878 INFO L225 Difference]: With dead ends: 2164 [2020-08-19 01:47:04,878 INFO L226 Difference]: Without dead ends: 1113 [2020-08-19 01:47:04,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-08-19 01:47:04,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-08-19 01:47:05,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 990. [2020-08-19 01:47:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-08-19 01:47:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1164 transitions. [2020-08-19 01:47:05,111 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1164 transitions. Word has length 160 [2020-08-19 01:47:05,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:47:05,112 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1164 transitions. [2020-08-19 01:47:05,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:47:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1164 transitions. [2020-08-19 01:47:05,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-19 01:47:05,119 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:47:05,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:47:05,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:47:05,121 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:47:05,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:47:05,121 INFO L82 PathProgramCache]: Analyzing trace with hash -524813042, now seen corresponding path program 1 times [2020-08-19 01:47:05,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:47:05,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258312685] [2020-08-19 01:47:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:47:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,443 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:47:05,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:47:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:47:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:47:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:47:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:47:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:47:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:47:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:47:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:47:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:47:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:47:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 01:47:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:47:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:47:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 01:47:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 01:47:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:47:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 01:47:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:47:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:47:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:47:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-19 01:47:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-19 01:47:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-19 01:47:05,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258312685] [2020-08-19 01:47:05,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:47:05,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 01:47:05,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874351025] [2020-08-19 01:47:05,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 01:47:05,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:47:05,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 01:47:05,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:47:05,796 INFO L87 Difference]: Start difference. First operand 990 states and 1164 transitions. Second operand 19 states. [2020-08-19 01:47:06,633 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:47:06,983 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:47:07,291 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:47:07,549 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:47:08,222 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:47:09,439 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:47:09,810 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:47:11,072 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:47:11,344 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:47:11,623 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:47:11,890 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:47:12,150 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:47:12,410 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:47:12,734 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:47:12,996 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:47:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:47:14,017 INFO L93 Difference]: Finished difference Result 1901 states and 2314 transitions. [2020-08-19 01:47:14,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 01:47:14,022 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 173 [2020-08-19 01:47:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:47:14,024 INFO L225 Difference]: With dead ends: 1901 [2020-08-19 01:47:14,024 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 01:47:14,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=539, Invalid=2541, Unknown=0, NotChecked=0, Total=3080 [2020-08-19 01:47:14,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 01:47:14,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 01:47:14,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 01:47:14,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 01:47:14,032 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2020-08-19 01:47:14,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:47:14,032 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 01:47:14,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 01:47:14,033 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 01:47:14,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 01:47:14,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:47:14,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 01:47:16,824 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 332 DAG size of output: 294 [2020-08-19 01:47:17,793 WARN L193 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 320 [2020-08-19 01:47:18,607 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 26