/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:53:46,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:53:46,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:53:46,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:53:46,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:53:46,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:53:46,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:53:46,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:53:46,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:53:46,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:53:46,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:53:46,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:53:46,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:53:46,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:53:46,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:53:46,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:53:46,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:53:46,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:53:46,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:53:46,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:53:46,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:53:46,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:53:46,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:53:46,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:53:46,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:53:46,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:53:46,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:53:46,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:53:46,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:53:46,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:53:46,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:53:46,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:53:46,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:53:46,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:53:46,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:53:46,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:53:46,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:53:46,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:53:46,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:53:46,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:53:46,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:53:46,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:53:46,334 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:53:46,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:53:46,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:53:46,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:53:46,336 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:53:46,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:53:46,337 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:53:46,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:53:46,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:53:46,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:53:46,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:53:46,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:53:46,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:53:46,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:53:46,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:53:46,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:53:46,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:53:46,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:53:46,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:53:46,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:53:46,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:53:46,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:53:46,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:53:46,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:53:46,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:53:46,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:53:46,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:53:46,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:53:46,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:53:46,343 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 -> log-additional-information=true; [2020-08-21 13:53:46,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:53:46,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:53:46,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:53:46,657 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:53:46,657 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:53:46,658 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2020-08-21 13:53:46,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3de8c6de/903807f222d640459d7157cd94211cea/FLAG5e4bc7a4e [2020-08-21 13:53:47,212 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:53:47,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2020-08-21 13:53:47,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3de8c6de/903807f222d640459d7157cd94211cea/FLAG5e4bc7a4e [2020-08-21 13:53:47,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3de8c6de/903807f222d640459d7157cd94211cea [2020-08-21 13:53:47,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:53:47,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:53:47,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:53:47,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:53:47,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:53:47,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:53:47" (1/1) ... [2020-08-21 13:53:47,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e54808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:47, skipping insertion in model container [2020-08-21 13:53:47,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:53:47" (1/1) ... [2020-08-21 13:53:47,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:53:47,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:53:48,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:53:48,133 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:53:48,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:53:48,244 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:53:48,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:48 WrapperNode [2020-08-21 13:53:48,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:53:48,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:53:48,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:53:48,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:53:48,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:48" (1/1) ... [2020-08-21 13:53:48,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:48" (1/1) ... [2020-08-21 13:53:48,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:48" (1/1) ... [2020-08-21 13:53:48,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:48" (1/1) ... [2020-08-21 13:53:48,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:48" (1/1) ... [2020-08-21 13:53:48,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:48" (1/1) ... [2020-08-21 13:53:48,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:48" (1/1) ... [2020-08-21 13:53:48,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:53:48,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:53:48,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:53:48,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:53:48,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:48" (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 [2020-08-21 13:53:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:53:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:53:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:53:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 13:53:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:53:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:53:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:53:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:53:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:53:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:53:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:53:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:53:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:53:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:53:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:53:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:53:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:53:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:53:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:53:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 13:53:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:53:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:53:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:53:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:53:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:53:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:53:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 13:53:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:53:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:53:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:53:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:53:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:53:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:53:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:53:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:53:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:53:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:53:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:53:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:53:48,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 13:53:48,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:53:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:53:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:53:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:53:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:53:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:53:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:53:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 13:53:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:53:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:53:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:53:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:53:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:53:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:53:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:53:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:53:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:53:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:53:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:53:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:53:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:53:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:53:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:53:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:53:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:53:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:53:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:53:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:53:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:53:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:53:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:53:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:53:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:53:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:53:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:53:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:53:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:53:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 13:53:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:53:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:53:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:53:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:53:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:53:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:53:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:53:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 13:53:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 13:53:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:53:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:53:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:53:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:53:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:53:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:53:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:53:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:53:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:53:49,484 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:53:49,484 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:53:49,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:53:49 BoogieIcfgContainer [2020-08-21 13:53:49,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:53:49,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:53:49,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:53:49,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:53:49,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:53:47" (1/3) ... [2020-08-21 13:53:49,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b686ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:53:49, skipping insertion in model container [2020-08-21 13:53:49,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:53:48" (2/3) ... [2020-08-21 13:53:49,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b686ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:53:49, skipping insertion in model container [2020-08-21 13:53:49,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:53:49" (3/3) ... [2020-08-21 13:53:49,498 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product57.cil.c [2020-08-21 13:53:49,509 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:53:49,517 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:53:49,532 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:53:49,557 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:53:49,558 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:53:49,558 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:53:49,558 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:53:49,558 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:53:49,558 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:53:49,559 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:53:49,559 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:53:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-21 13:53:49,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 13:53:49,592 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:49,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:53:49,594 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:49,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:49,600 INFO L82 PathProgramCache]: Analyzing trace with hash 135364863, now seen corresponding path program 1 times [2020-08-21 13:53:49,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:49,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632800417] [2020-08-21 13:53:49,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:50,317 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:53:50,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:53:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:50,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:53:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:50,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:53:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:50,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:53:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:50,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:53:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:50,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:53:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:50,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:53:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:53:50,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632800417] [2020-08-21 13:53:50,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:53:50,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:53:50,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219254084] [2020-08-21 13:53:50,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:53:50,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:53:50,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:53:50,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:53:50,452 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 3 states. [2020-08-21 13:53:51,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:53:51,623 INFO L93 Difference]: Finished difference Result 323 states and 418 transitions. [2020-08-21 13:53:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:53:51,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 13:53:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:53:51,641 INFO L225 Difference]: With dead ends: 323 [2020-08-21 13:53:51,641 INFO L226 Difference]: Without dead ends: 174 [2020-08-21 13:53:51,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:53:51,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-21 13:53:51,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2020-08-21 13:53:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-21 13:53:51,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2020-08-21 13:53:51,739 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 46 [2020-08-21 13:53:51,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:53:51,740 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2020-08-21 13:53:51,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:53:51,740 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2020-08-21 13:53:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 13:53:51,743 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:51,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:53:51,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:53:51,744 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:51,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:51,745 INFO L82 PathProgramCache]: Analyzing trace with hash 327228860, now seen corresponding path program 1 times [2020-08-21 13:53:51,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:51,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861356282] [2020-08-21 13:53:51,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:52,094 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:53:52,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:53:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:52,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:53:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:53:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:52,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:53:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:52,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:53:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:52,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:53:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:52,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:53:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:53:52,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861356282] [2020-08-21 13:53:52,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:53:52,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:53:52,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117901893] [2020-08-21 13:53:52,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:53:52,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:53:52,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:53:52,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:53:52,144 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 4 states. [2020-08-21 13:53:52,522 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:53:53,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:53:53,419 INFO L93 Difference]: Finished difference Result 256 states and 309 transitions. [2020-08-21 13:53:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:53:53,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 13:53:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:53:53,425 INFO L225 Difference]: With dead ends: 256 [2020-08-21 13:53:53,426 INFO L226 Difference]: Without dead ends: 158 [2020-08-21 13:53:53,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:53:53,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-21 13:53:53,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-08-21 13:53:53,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-21 13:53:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2020-08-21 13:53:53,467 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 47 [2020-08-21 13:53:53,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:53:53,467 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2020-08-21 13:53:53,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:53:53,467 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2020-08-21 13:53:53,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 13:53:53,469 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:53,469 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] [2020-08-21 13:53:53,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:53:53,470 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:53,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:53,470 INFO L82 PathProgramCache]: Analyzing trace with hash -207054876, now seen corresponding path program 1 times [2020-08-21 13:53:53,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:53,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832701680] [2020-08-21 13:53:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:53,749 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:53:53,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:53:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:53,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:53:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:53,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:53:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:53,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:53:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:53,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:53:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:53,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:53:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:53,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:53:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:53:53,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832701680] [2020-08-21 13:53:53,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:53:53,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:53:53,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619207077] [2020-08-21 13:53:53,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:53:53,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:53:53,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:53:53,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:53:53,837 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand 8 states. [2020-08-21 13:53:54,170 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:53:54,482 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:53:54,711 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:53:54,960 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:53:56,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:53:56,186 INFO L93 Difference]: Finished difference Result 265 states and 323 transitions. [2020-08-21 13:53:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 13:53:56,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 13:53:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:53:56,190 INFO L225 Difference]: With dead ends: 265 [2020-08-21 13:53:56,191 INFO L226 Difference]: Without dead ends: 158 [2020-08-21 13:53:56,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:53:56,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-21 13:53:56,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-08-21 13:53:56,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-21 13:53:56,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2020-08-21 13:53:56,231 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 51 [2020-08-21 13:53:56,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:53:56,231 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2020-08-21 13:53:56,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:53:56,231 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2020-08-21 13:53:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 13:53:56,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:56,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:53:56,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:53:56,235 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:56,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1468702982, now seen corresponding path program 1 times [2020-08-21 13:53:56,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:56,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904841220] [2020-08-21 13:53:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:56,520 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:53:56,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:53:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:56,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:53:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:56,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:53:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:56,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:53:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:56,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:53:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:56,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 13:53:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:56,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:53:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:56,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:53:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:56,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:53:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:56,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:53:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:53:56,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904841220] [2020-08-21 13:53:56,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:53:56,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:53:56,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435310891] [2020-08-21 13:53:56,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:53:56,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:53:56,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:53:56,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:53:56,612 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 6 states. [2020-08-21 13:53:56,900 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:53:57,969 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:53:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:53:58,722 INFO L93 Difference]: Finished difference Result 357 states and 439 transitions. [2020-08-21 13:53:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:53:58,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-21 13:53:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:53:58,726 INFO L225 Difference]: With dead ends: 357 [2020-08-21 13:53:58,726 INFO L226 Difference]: Without dead ends: 250 [2020-08-21 13:53:58,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:53:58,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-08-21 13:53:58,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 209. [2020-08-21 13:53:58,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-21 13:53:58,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 238 transitions. [2020-08-21 13:53:58,774 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 238 transitions. Word has length 64 [2020-08-21 13:53:58,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:53:58,775 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 238 transitions. [2020-08-21 13:53:58,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:53:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 238 transitions. [2020-08-21 13:53:58,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 13:53:58,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:53:58,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:53:58,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:53:58,778 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:53:58,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:53:58,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1930431345, now seen corresponding path program 1 times [2020-08-21 13:53:58,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:53:58,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530958134] [2020-08-21 13:53:58,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:53:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:59,085 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:53:59,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:53:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:59,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:53:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:59,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:53:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:59,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:53:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:59,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:53:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:59,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 13:53:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:59,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:53:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:59,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:53:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:59,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:53:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:59,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:53:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:59,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 13:53:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:59,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 13:53:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:53:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:53:59,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530958134] [2020-08-21 13:53:59,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:53:59,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:53:59,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947802181] [2020-08-21 13:53:59,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:53:59,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:53:59,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:53:59,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:53:59,196 INFO L87 Difference]: Start difference. First operand 209 states and 238 transitions. Second operand 8 states. [2020-08-21 13:53:59,579 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:54:00,536 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:54:00,865 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:54:01,443 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:54:01,672 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:54:01,927 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:54:02,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:02,892 INFO L93 Difference]: Finished difference Result 622 states and 764 transitions. [2020-08-21 13:54:02,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:54:02,895 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-21 13:54:02,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:02,902 INFO L225 Difference]: With dead ends: 622 [2020-08-21 13:54:02,902 INFO L226 Difference]: Without dead ends: 437 [2020-08-21 13:54:02,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:54:02,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-08-21 13:54:02,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 373. [2020-08-21 13:54:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-21 13:54:02,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 426 transitions. [2020-08-21 13:54:02,990 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 426 transitions. Word has length 78 [2020-08-21 13:54:02,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:02,991 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 426 transitions. [2020-08-21 13:54:02,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:54:02,991 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 426 transitions. [2020-08-21 13:54:02,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 13:54:02,993 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:02,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:02,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:54:02,993 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:02,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:02,994 INFO L82 PathProgramCache]: Analyzing trace with hash -613018165, now seen corresponding path program 1 times [2020-08-21 13:54:02,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:02,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687801882] [2020-08-21 13:54:02,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:03,257 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:54:03,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:03,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:03,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:54:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:03,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:54:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:03,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:54:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:03,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:54:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:03,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:54:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:03,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:03,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:03,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:03,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:03,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 13:54:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:03,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 13:54:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:54:03,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687801882] [2020-08-21 13:54:03,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:54:03,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:54:03,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807093218] [2020-08-21 13:54:03,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:54:03,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:03,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:54:03,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:54:03,397 INFO L87 Difference]: Start difference. First operand 373 states and 426 transitions. Second operand 9 states. [2020-08-21 13:54:03,708 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:54:04,791 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:54:05,045 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:54:06,031 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:54:06,262 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:54:06,494 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:54:06,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:06,728 INFO L93 Difference]: Finished difference Result 476 states and 594 transitions. [2020-08-21 13:54:06,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 13:54:06,729 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-21 13:54:06,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:06,733 INFO L225 Difference]: With dead ends: 476 [2020-08-21 13:54:06,733 INFO L226 Difference]: Without dead ends: 473 [2020-08-21 13:54:06,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 13:54:06,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-08-21 13:54:06,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 373. [2020-08-21 13:54:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-21 13:54:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 425 transitions. [2020-08-21 13:54:06,811 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 425 transitions. Word has length 82 [2020-08-21 13:54:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:06,812 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 425 transitions. [2020-08-21 13:54:06,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:54:06,812 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 425 transitions. [2020-08-21 13:54:06,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 13:54:06,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:06,815 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:06,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:54:06,815 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:06,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:06,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1664141551, now seen corresponding path program 1 times [2020-08-21 13:54:06,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:06,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676534437] [2020-08-21 13:54:06,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,082 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:54:07,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:54:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:54:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:54:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:54:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:54:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:54:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 13:54:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 13:54:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:07,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:54:07,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676534437] [2020-08-21 13:54:07,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:54:07,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:54:07,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562652668] [2020-08-21 13:54:07,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:54:07,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:07,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:54:07,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:54:07,227 INFO L87 Difference]: Start difference. First operand 373 states and 425 transitions. Second operand 9 states. [2020-08-21 13:54:08,107 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:54:08,344 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:54:08,594 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:54:08,841 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:54:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:09,967 INFO L93 Difference]: Finished difference Result 830 states and 1028 transitions. [2020-08-21 13:54:09,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:54:09,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-21 13:54:09,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:09,976 INFO L225 Difference]: With dead ends: 830 [2020-08-21 13:54:09,976 INFO L226 Difference]: Without dead ends: 481 [2020-08-21 13:54:09,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:54:09,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-08-21 13:54:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 383. [2020-08-21 13:54:10,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-08-21 13:54:10,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 435 transitions. [2020-08-21 13:54:10,050 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 435 transitions. Word has length 98 [2020-08-21 13:54:10,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:10,050 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 435 transitions. [2020-08-21 13:54:10,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:54:10,051 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 435 transitions. [2020-08-21 13:54:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 13:54:10,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:10,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:10,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:54:10,053 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:10,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:10,053 INFO L82 PathProgramCache]: Analyzing trace with hash -770655213, now seen corresponding path program 1 times [2020-08-21 13:54:10,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:10,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808600056] [2020-08-21 13:54:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,355 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:54:10,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:54:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:54:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:54:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:54:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:54:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:54:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 13:54:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 13:54:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:54:10,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808600056] [2020-08-21 13:54:10,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:54:10,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 13:54:10,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793942833] [2020-08-21 13:54:10,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:54:10,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:10,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:54:10,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:54:10,507 INFO L87 Difference]: Start difference. First operand 383 states and 435 transitions. Second operand 11 states. [2020-08-21 13:54:10,924 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:54:11,153 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:54:11,365 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:54:11,923 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:54:12,158 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:54:12,392 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:54:13,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:13,469 INFO L93 Difference]: Finished difference Result 850 states and 1050 transitions. [2020-08-21 13:54:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:54:13,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-21 13:54:13,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:13,477 INFO L225 Difference]: With dead ends: 850 [2020-08-21 13:54:13,477 INFO L226 Difference]: Without dead ends: 491 [2020-08-21 13:54:13,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:54:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-08-21 13:54:13,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 391. [2020-08-21 13:54:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-21 13:54:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 443 transitions. [2020-08-21 13:54:13,554 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 443 transitions. Word has length 98 [2020-08-21 13:54:13,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:13,554 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 443 transitions. [2020-08-21 13:54:13,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:54:13,555 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 443 transitions. [2020-08-21 13:54:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 13:54:13,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:13,562 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:13,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:54:13,562 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:13,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:13,563 INFO L82 PathProgramCache]: Analyzing trace with hash -778414572, now seen corresponding path program 1 times [2020-08-21 13:54:13,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:13,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407066121] [2020-08-21 13:54:13,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,836 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:54:13,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:54:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:54:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:54:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:54:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:54:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:54:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 13:54:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 13:54:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:13,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:54:13,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407066121] [2020-08-21 13:54:13,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:54:13,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:54:13,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855751685] [2020-08-21 13:54:13,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:54:13,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:13,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:54:13,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:54:13,973 INFO L87 Difference]: Start difference. First operand 391 states and 443 transitions. Second operand 7 states. [2020-08-21 13:54:14,302 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:54:14,765 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:54:16,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:16,791 INFO L93 Difference]: Finished difference Result 1153 states and 1472 transitions. [2020-08-21 13:54:16,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 13:54:16,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-21 13:54:16,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:16,798 INFO L225 Difference]: With dead ends: 1153 [2020-08-21 13:54:16,798 INFO L226 Difference]: Without dead ends: 786 [2020-08-21 13:54:16,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:54:16,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-08-21 13:54:16,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 687. [2020-08-21 13:54:16,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-08-21 13:54:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 813 transitions. [2020-08-21 13:54:16,919 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 813 transitions. Word has length 98 [2020-08-21 13:54:16,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:16,921 INFO L479 AbstractCegarLoop]: Abstraction has 687 states and 813 transitions. [2020-08-21 13:54:16,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:54:16,921 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 813 transitions. [2020-08-21 13:54:16,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 13:54:16,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:16,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:16,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:54:16,925 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:16,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:16,925 INFO L82 PathProgramCache]: Analyzing trace with hash 469491758, now seen corresponding path program 1 times [2020-08-21 13:54:16,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:16,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435249178] [2020-08-21 13:54:16,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,264 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:54:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:54:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:54:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:54:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:54:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:54:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:54:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:54:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 13:54:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 13:54:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 13:54:17,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435249178] [2020-08-21 13:54:17,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:54:17,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 13:54:17,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002092012] [2020-08-21 13:54:17,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 13:54:17,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:17,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 13:54:17,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-21 13:54:17,687 INFO L87 Difference]: Start difference. First operand 687 states and 813 transitions. Second operand 17 states. [2020-08-21 13:54:18,363 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:54:18,725 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:54:18,990 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:54:19,235 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:54:19,825 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:54:20,762 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:54:21,083 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:54:21,360 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:54:21,645 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:54:21,964 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:54:22,234 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:54:22,820 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 13:54:23,366 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 13:54:25,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:25,415 INFO L93 Difference]: Finished difference Result 1418 states and 1746 transitions. [2020-08-21 13:54:25,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 13:54:25,415 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2020-08-21 13:54:25,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:25,420 INFO L225 Difference]: With dead ends: 1418 [2020-08-21 13:54:25,420 INFO L226 Difference]: Without dead ends: 755 [2020-08-21 13:54:25,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 13:54:25,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2020-08-21 13:54:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 659. [2020-08-21 13:54:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-08-21 13:54:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 767 transitions. [2020-08-21 13:54:25,520 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 767 transitions. Word has length 102 [2020-08-21 13:54:25,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:25,520 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 767 transitions. [2020-08-21 13:54:25,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 13:54:25,520 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 767 transitions. [2020-08-21 13:54:25,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 13:54:25,523 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:25,524 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:25,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:54:25,524 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:25,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:25,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1698521745, now seen corresponding path program 1 times [2020-08-21 13:54:25,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:25,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677898240] [2020-08-21 13:54:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,813 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:54:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:54:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:54:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:54:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:54:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:54:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:54:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:54:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 13:54:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 13:54:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 13:54:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:25,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:26,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:26,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:54:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:26,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:26,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 13:54:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:26,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 13:54:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 13:54:26,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677898240] [2020-08-21 13:54:26,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:54:26,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 13:54:26,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579439517] [2020-08-21 13:54:26,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 13:54:26,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:26,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 13:54:26,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:54:26,132 INFO L87 Difference]: Start difference. First operand 659 states and 767 transitions. Second operand 14 states. [2020-08-21 13:54:26,514 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:54:27,107 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:54:28,811 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-21 13:54:29,269 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-08-21 13:54:29,756 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-08-21 13:54:30,594 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:54:30,871 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:54:31,115 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:54:31,351 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:54:32,910 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2020-08-21 13:54:33,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:33,873 INFO L93 Difference]: Finished difference Result 2026 states and 2659 transitions. [2020-08-21 13:54:33,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-21 13:54:33,874 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-21 13:54:33,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:33,887 INFO L225 Difference]: With dead ends: 2026 [2020-08-21 13:54:33,887 INFO L226 Difference]: Without dead ends: 1515 [2020-08-21 13:54:33,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=397, Invalid=1495, Unknown=0, NotChecked=0, Total=1892 [2020-08-21 13:54:33,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-08-21 13:54:34,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1215. [2020-08-21 13:54:34,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-08-21 13:54:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1429 transitions. [2020-08-21 13:54:34,176 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1429 transitions. Word has length 155 [2020-08-21 13:54:34,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:34,176 INFO L479 AbstractCegarLoop]: Abstraction has 1215 states and 1429 transitions. [2020-08-21 13:54:34,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 13:54:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1429 transitions. [2020-08-21 13:54:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 13:54:34,179 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:34,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:34,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 13:54:34,180 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:34,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:34,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1973281359, now seen corresponding path program 1 times [2020-08-21 13:54:34,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:34,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841372434] [2020-08-21 13:54:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,518 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:54:34,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:54:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:54:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:54:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:54:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:54:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:54:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:54:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 13:54:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 13:54:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 13:54:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:54:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 13:54:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 13:54:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-21 13:54:34,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841372434] [2020-08-21 13:54:34,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:54:34,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 13:54:34,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112031565] [2020-08-21 13:54:34,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 13:54:34,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:34,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 13:54:34,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:54:34,764 INFO L87 Difference]: Start difference. First operand 1215 states and 1429 transitions. Second operand 14 states. [2020-08-21 13:54:35,360 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:54:35,718 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:54:36,057 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:54:37,710 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:54:37,950 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:54:38,197 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:54:38,422 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:54:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:38,642 INFO L93 Difference]: Finished difference Result 1687 states and 2024 transitions. [2020-08-21 13:54:38,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 13:54:38,647 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-21 13:54:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:38,649 INFO L225 Difference]: With dead ends: 1687 [2020-08-21 13:54:38,649 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 13:54:38,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-08-21 13:54:38,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 13:54:38,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 13:54:38,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 13:54:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 13:54:38,655 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2020-08-21 13:54:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:38,655 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 13:54:38,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 13:54:38,655 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 13:54:38,656 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 13:54:38,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 13:54:38,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 13:54:39,267 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 203 [2020-08-21 13:54:39,775 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 203 [2020-08-21 13:54:39,892 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 203 [2020-08-21 13:54:41,333 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 318 DAG size of output: 285 [2020-08-21 13:54:42,601 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 286 [2020-08-21 13:54:43,225 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 277