/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:16:26,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:16:26,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:16:26,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:16:26,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:16:26,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:16:26,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:16:26,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:16:26,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:16:26,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:16:26,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:16:26,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:16:26,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:16:26,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:16:26,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:16:26,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:16:26,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:16:26,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:16:26,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:16:26,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:16:26,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:16:26,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:16:26,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:16:26,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:16:26,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:16:26,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:16:26,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:16:26,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:16:26,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:16:26,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:16:26,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:16:26,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:16:26,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:16:26,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:16:26,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:16:26,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:16:26,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:16:26,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:16:26,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:16:26,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:16:26,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:16:26,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 15:16:26,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:16:26,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:16:26,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:16:26,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:16:26,291 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:16:26,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:16:26,291 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:16:26,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:16:26,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:16:26,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:16:26,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:16:26,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:16:26,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:16:26,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:16:26,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:16:26,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:16:26,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:16:26,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:16:26,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:16:26,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:16:26,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:16:26,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:16:26,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:16:26,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:16:26,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:16:26,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:16:26,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:16:26,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:16:26,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:16:26,298 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 -> false [2020-08-18 15:16:26,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:16:26,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:16:26,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:16:26,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:16:26,610 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:16:26,612 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c [2020-08-18 15:16:26,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0109eae/88493bb8541c4915aa93286d1d6b01ed/FLAG6f7e49d24 [2020-08-18 15:16:27,201 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:16:27,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c [2020-08-18 15:16:27,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0109eae/88493bb8541c4915aa93286d1d6b01ed/FLAG6f7e49d24 [2020-08-18 15:16:27,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0109eae/88493bb8541c4915aa93286d1d6b01ed [2020-08-18 15:16:27,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:16:27,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:16:27,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:16:27,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:16:27,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:16:27,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:16:27" (1/1) ... [2020-08-18 15:16:27,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ab6a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:27, skipping insertion in model container [2020-08-18 15:16:27,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:16:27" (1/1) ... [2020-08-18 15:16:27,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:16:27,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:16:27,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:16:27,987 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:16:28,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:16:28,100 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:16:28,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:28 WrapperNode [2020-08-18 15:16:28,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:16:28,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:16:28,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:16:28,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:16:28,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:28" (1/1) ... [2020-08-18 15:16:28,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:28" (1/1) ... [2020-08-18 15:16:28,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:28" (1/1) ... [2020-08-18 15:16:28,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:28" (1/1) ... [2020-08-18 15:16:28,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:28" (1/1) ... [2020-08-18 15:16:28,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:28" (1/1) ... [2020-08-18 15:16:28,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:28" (1/1) ... [2020-08-18 15:16:28,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:16:28,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:16:28,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:16:28,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:16:28,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:16:28,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:16:28,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:16:28,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 15:16:28,254 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 15:16:28,254 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 15:16:28,254 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 15:16:28,254 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 15:16:28,254 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 15:16:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 15:16:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 15:16:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 15:16:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 15:16:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 15:16:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 15:16:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 15:16:28,256 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 15:16:28,256 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 15:16:28,256 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 15:16:28,256 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:16:28,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 15:16:28,256 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 15:16:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 15:16:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 15:16:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 15:16:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 15:16:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 15:16:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 15:16:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 15:16:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 15:16:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 15:16:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 15:16:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 15:16:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 15:16:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 15:16:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 15:16:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 15:16:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 15:16:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 15:16:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:16:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:16:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 15:16:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 15:16:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 15:16:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 15:16:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 15:16:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 15:16:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 15:16:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 15:16:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 15:16:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 15:16:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 15:16:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 15:16:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:16:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 15:16:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 15:16:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 15:16:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 15:16:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 15:16:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 15:16:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 15:16:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 15:16:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:16:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 15:16:28,264 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 15:16:28,264 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 15:16:28,264 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 15:16:28,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 15:16:28,264 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 15:16:28,264 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 15:16:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 15:16:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 15:16:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 15:16:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:16:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:16:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 15:16:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:16:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:16:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:16:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:16:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 15:16:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:16:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 15:16:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 15:16:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:16:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 15:16:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 15:16:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 15:16:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:16:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 15:16:28,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:16:29,307 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:16:29,308 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 15:16:29,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:16:29 BoogieIcfgContainer [2020-08-18 15:16:29,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:16:29,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:16:29,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:16:29,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:16:29,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:16:27" (1/3) ... [2020-08-18 15:16:29,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb48cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:16:29, skipping insertion in model container [2020-08-18 15:16:29,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:16:28" (2/3) ... [2020-08-18 15:16:29,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb48cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:16:29, skipping insertion in model container [2020-08-18 15:16:29,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:16:29" (3/3) ... [2020-08-18 15:16:29,327 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product33.cil.c [2020-08-18 15:16:29,338 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:16:29,346 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:16:29,359 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:16:29,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:16:29,388 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:16:29,388 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:16:29,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:16:29,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:16:29,389 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:16:29,389 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:16:29,389 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:16:29,409 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-08-18 15:16:29,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 15:16:29,419 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:29,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:29,420 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:29,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:29,425 INFO L82 PathProgramCache]: Analyzing trace with hash -884456721, now seen corresponding path program 1 times [2020-08-18 15:16:29,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:29,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16172865] [2020-08-18 15:16:29,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:30,172 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:30,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:30,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:30,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:30,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:30,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:30,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:16:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:30,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 15:16:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:30,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16172865] [2020-08-18 15:16:30,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:30,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:16:30,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860416708] [2020-08-18 15:16:30,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:16:30,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:30,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:16:30,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:16:30,305 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 4 states. [2020-08-18 15:16:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:31,297 INFO L93 Difference]: Finished difference Result 248 states and 328 transitions. [2020-08-18 15:16:31,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 15:16:31,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 15:16:31,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:31,313 INFO L225 Difference]: With dead ends: 248 [2020-08-18 15:16:31,313 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 15:16:31,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:16:31,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 15:16:31,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 110. [2020-08-18 15:16:31,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-18 15:16:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 129 transitions. [2020-08-18 15:16:31,420 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 129 transitions. Word has length 51 [2020-08-18 15:16:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:31,421 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 129 transitions. [2020-08-18 15:16:31,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:16:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 129 transitions. [2020-08-18 15:16:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 15:16:31,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:31,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:31,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:16:31,430 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:31,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:31,430 INFO L82 PathProgramCache]: Analyzing trace with hash -101366549, now seen corresponding path program 1 times [2020-08-18 15:16:31,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:31,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114441155] [2020-08-18 15:16:31,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:31,863 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:31,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:31,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:31,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:31,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:31,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:31,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:31,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:16:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:16:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:31,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114441155] [2020-08-18 15:16:31,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:31,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:16:31,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599175307] [2020-08-18 15:16:31,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:16:31,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:31,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:16:31,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:16:31,920 INFO L87 Difference]: Start difference. First operand 110 states and 129 transitions. Second operand 5 states. [2020-08-18 15:16:32,379 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:16:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:33,120 INFO L93 Difference]: Finished difference Result 193 states and 239 transitions. [2020-08-18 15:16:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 15:16:33,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 15:16:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:33,124 INFO L225 Difference]: With dead ends: 193 [2020-08-18 15:16:33,125 INFO L226 Difference]: Without dead ends: 129 [2020-08-18 15:16:33,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 15:16:33,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-08-18 15:16:33,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-08-18 15:16:33,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-18 15:16:33,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2020-08-18 15:16:33,162 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 52 [2020-08-18 15:16:33,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:33,163 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2020-08-18 15:16:33,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:16:33,163 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2020-08-18 15:16:33,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 15:16:33,165 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:33,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:33,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:16:33,166 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:33,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:33,166 INFO L82 PathProgramCache]: Analyzing trace with hash -388267202, now seen corresponding path program 1 times [2020-08-18 15:16:33,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:33,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404713153] [2020-08-18 15:16:33,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:33,571 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:33,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:33,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:33,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:33,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:33,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:33,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:33,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 15:16:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:33,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:16:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:33,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404713153] [2020-08-18 15:16:33,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:33,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:16:33,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785301166] [2020-08-18 15:16:33,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:16:33,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:33,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:16:33,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:16:33,669 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand 9 states. [2020-08-18 15:16:34,047 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:16:34,389 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:34,629 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:34,859 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:35,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:35,811 INFO L93 Difference]: Finished difference Result 202 states and 254 transitions. [2020-08-18 15:16:35,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:16:35,811 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 15:16:35,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:35,819 INFO L225 Difference]: With dead ends: 202 [2020-08-18 15:16:35,819 INFO L226 Difference]: Without dead ends: 129 [2020-08-18 15:16:35,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:16:35,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-08-18 15:16:35,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-08-18 15:16:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-18 15:16:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-08-18 15:16:35,872 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 56 [2020-08-18 15:16:35,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:35,875 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-08-18 15:16:35,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:16:35,875 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-08-18 15:16:35,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 15:16:35,886 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:35,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:35,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:16:35,886 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:35,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:35,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1251165603, now seen corresponding path program 1 times [2020-08-18 15:16:35,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:35,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631572043] [2020-08-18 15:16:35,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:36,204 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:36,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:36,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:36,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:36,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:36,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:36,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:16:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:36,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:16:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:36,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 15:16:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:36,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 15:16:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:36,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631572043] [2020-08-18 15:16:36,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:36,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 15:16:36,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422123634] [2020-08-18 15:16:36,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 15:16:36,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:36,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 15:16:36,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 15:16:36,320 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 7 states. [2020-08-18 15:16:36,685 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:16:37,802 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:16:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:38,252 INFO L93 Difference]: Finished difference Result 287 states and 364 transitions. [2020-08-18 15:16:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 15:16:38,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-08-18 15:16:38,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:38,256 INFO L225 Difference]: With dead ends: 287 [2020-08-18 15:16:38,256 INFO L226 Difference]: Without dead ends: 214 [2020-08-18 15:16:38,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:16:38,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-08-18 15:16:38,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 168. [2020-08-18 15:16:38,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-18 15:16:38,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 195 transitions. [2020-08-18 15:16:38,303 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 195 transitions. Word has length 64 [2020-08-18 15:16:38,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:38,304 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 195 transitions. [2020-08-18 15:16:38,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 15:16:38,304 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 195 transitions. [2020-08-18 15:16:38,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 15:16:38,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:38,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:38,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:16:38,306 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:38,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:38,306 INFO L82 PathProgramCache]: Analyzing trace with hash 155242328, now seen corresponding path program 1 times [2020-08-18 15:16:38,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:38,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705530216] [2020-08-18 15:16:38,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:38,606 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:38,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:38,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:38,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:38,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:38,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:38,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:38,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:16:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:38,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:16:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:38,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:16:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:38,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:16:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:38,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 15:16:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:38,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 15:16:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:38,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705530216] [2020-08-18 15:16:38,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:38,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:16:38,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22127511] [2020-08-18 15:16:38,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:16:38,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:38,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:16:38,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:16:38,698 INFO L87 Difference]: Start difference. First operand 168 states and 195 transitions. Second operand 9 states. [2020-08-18 15:16:39,092 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:16:40,167 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:40,425 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:40,652 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:40,870 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:16:41,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:41,728 INFO L93 Difference]: Finished difference Result 495 states and 636 transitions. [2020-08-18 15:16:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 15:16:41,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 15:16:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:41,734 INFO L225 Difference]: With dead ends: 495 [2020-08-18 15:16:41,734 INFO L226 Difference]: Without dead ends: 355 [2020-08-18 15:16:41,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 15:16:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-08-18 15:16:41,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 284. [2020-08-18 15:16:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-08-18 15:16:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 330 transitions. [2020-08-18 15:16:41,810 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 330 transitions. Word has length 78 [2020-08-18 15:16:41,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:41,810 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 330 transitions. [2020-08-18 15:16:41,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:16:41,810 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 330 transitions. [2020-08-18 15:16:41,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 15:16:41,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:41,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:41,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:16:41,813 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:41,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:41,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1734675892, now seen corresponding path program 1 times [2020-08-18 15:16:41,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:41,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345668248] [2020-08-18 15:16:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:42,127 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:42,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:42,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:42,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:42,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:42,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:42,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:42,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 15:16:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:42,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:16:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:42,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:16:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:42,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:16:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:42,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:16:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:42,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 15:16:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:42,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 15:16:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:42,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345668248] [2020-08-18 15:16:42,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:42,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 15:16:42,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897692037] [2020-08-18 15:16:42,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:16:42,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:42,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:16:42,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:16:42,262 INFO L87 Difference]: Start difference. First operand 284 states and 330 transitions. Second operand 10 states. [2020-08-18 15:16:42,670 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:16:43,770 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:44,039 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:16:44,299 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:44,603 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:45,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:45,324 INFO L93 Difference]: Finished difference Result 646 states and 813 transitions. [2020-08-18 15:16:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 15:16:45,325 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-08-18 15:16:45,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:45,333 INFO L225 Difference]: With dead ends: 646 [2020-08-18 15:16:45,336 INFO L226 Difference]: Without dead ends: 390 [2020-08-18 15:16:45,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-18 15:16:45,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-08-18 15:16:45,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 283. [2020-08-18 15:16:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-08-18 15:16:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 327 transitions. [2020-08-18 15:16:45,440 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 327 transitions. Word has length 82 [2020-08-18 15:16:45,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:45,440 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 327 transitions. [2020-08-18 15:16:45,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:16:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 327 transitions. [2020-08-18 15:16:45,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 15:16:45,443 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:45,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:45,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:16:45,444 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:45,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:45,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1892436078, now seen corresponding path program 1 times [2020-08-18 15:16:45,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:45,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903599201] [2020-08-18 15:16:45,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:45,757 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:45,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:45,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:45,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:45,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:45,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:45,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:45,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 15:16:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:45,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:16:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:45,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:16:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:45,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:16:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:45,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:16:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:45,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 15:16:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:45,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:16:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:45,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903599201] [2020-08-18 15:16:45,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:45,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 15:16:45,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846185682] [2020-08-18 15:16:45,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:16:45,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:45,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:16:45,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:16:45,941 INFO L87 Difference]: Start difference. First operand 283 states and 327 transitions. Second operand 10 states. [2020-08-18 15:16:46,867 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:47,123 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 15:16:47,396 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:16:47,649 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:16:48,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:48,421 INFO L93 Difference]: Finished difference Result 649 states and 823 transitions. [2020-08-18 15:16:48,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 15:16:48,421 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-18 15:16:48,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:48,425 INFO L225 Difference]: With dead ends: 649 [2020-08-18 15:16:48,425 INFO L226 Difference]: Without dead ends: 394 [2020-08-18 15:16:48,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:16:48,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-08-18 15:16:48,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 293. [2020-08-18 15:16:48,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-18 15:16:48,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 337 transitions. [2020-08-18 15:16:48,484 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 337 transitions. Word has length 83 [2020-08-18 15:16:48,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:48,484 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 337 transitions. [2020-08-18 15:16:48,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:16:48,485 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 337 transitions. [2020-08-18 15:16:48,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 15:16:48,486 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:48,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:48,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:16:48,487 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:48,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:48,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1016327824, now seen corresponding path program 1 times [2020-08-18 15:16:48,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:48,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44680140] [2020-08-18 15:16:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,749 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:48,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 15:16:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:16:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:16:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:16:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:16:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 15:16:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:16:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:48,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:48,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44680140] [2020-08-18 15:16:48,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:48,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 15:16:48,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387618715] [2020-08-18 15:16:48,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:16:48,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:48,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:16:48,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:16:48,900 INFO L87 Difference]: Start difference. First operand 293 states and 337 transitions. Second operand 12 states. [2020-08-18 15:16:49,689 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:16:49,937 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:16:50,186 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:16:50,842 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:16:51,100 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:16:51,347 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:16:52,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:52,263 INFO L93 Difference]: Finished difference Result 673 states and 863 transitions. [2020-08-18 15:16:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 15:16:52,264 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-18 15:16:52,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:52,268 INFO L225 Difference]: With dead ends: 673 [2020-08-18 15:16:52,268 INFO L226 Difference]: Without dead ends: 408 [2020-08-18 15:16:52,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 15:16:52,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-08-18 15:16:52,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 301. [2020-08-18 15:16:52,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-08-18 15:16:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 345 transitions. [2020-08-18 15:16:52,349 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 345 transitions. Word has length 83 [2020-08-18 15:16:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:52,349 INFO L479 AbstractCegarLoop]: Abstraction has 301 states and 345 transitions. [2020-08-18 15:16:52,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:16:52,350 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 345 transitions. [2020-08-18 15:16:52,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 15:16:52,354 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:52,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:52,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:16:52,355 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:52,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:52,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1094962545, now seen corresponding path program 1 times [2020-08-18 15:16:52,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:52,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514216886] [2020-08-18 15:16:52,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:52,639 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:52,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:52,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:52,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:52,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:52,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:52,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 15:16:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:52,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:16:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:52,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:16:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:52,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:16:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:52,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:16:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:52,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 15:16:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:52,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:16:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:52,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514216886] [2020-08-18 15:16:52,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:52,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:16:52,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942985303] [2020-08-18 15:16:52,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:16:52,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:52,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:16:52,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:16:52,756 INFO L87 Difference]: Start difference. First operand 301 states and 345 transitions. Second operand 8 states. [2020-08-18 15:16:53,276 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:16:54,034 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:16:56,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:56,051 INFO L93 Difference]: Finished difference Result 972 states and 1282 transitions. [2020-08-18 15:16:56,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 15:16:56,052 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-18 15:16:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:56,058 INFO L225 Difference]: With dead ends: 972 [2020-08-18 15:16:56,058 INFO L226 Difference]: Without dead ends: 699 [2020-08-18 15:16:56,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-08-18 15:16:56,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2020-08-18 15:16:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 567. [2020-08-18 15:16:56,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-08-18 15:16:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 673 transitions. [2020-08-18 15:16:56,170 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 673 transitions. Word has length 83 [2020-08-18 15:16:56,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:56,171 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 673 transitions. [2020-08-18 15:16:56,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:16:56,171 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 673 transitions. [2020-08-18 15:16:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 15:16:56,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:56,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:56,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:16:56,173 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:56,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:56,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1057623401, now seen corresponding path program 1 times [2020-08-18 15:16:56,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:56,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722511685] [2020-08-18 15:16:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,434 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:16:56,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:16:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:16:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:16:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:16:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:16:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:16:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:16:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:16:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:16:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:16:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:16:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:16:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 15:16:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 15:16:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:16:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:16:56,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722511685] [2020-08-18 15:16:56,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:16:56,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:16:56,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124878131] [2020-08-18 15:16:56,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:16:56,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:16:56,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:16:56,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:16:56,577 INFO L87 Difference]: Start difference. First operand 567 states and 673 transitions. Second operand 8 states. [2020-08-18 15:16:57,118 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:16:59,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:16:59,124 INFO L93 Difference]: Finished difference Result 1114 states and 1455 transitions. [2020-08-18 15:16:59,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 15:16:59,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-08-18 15:16:59,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:16:59,133 INFO L225 Difference]: With dead ends: 1114 [2020-08-18 15:16:59,133 INFO L226 Difference]: Without dead ends: 1111 [2020-08-18 15:16:59,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2020-08-18 15:16:59,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2020-08-18 15:16:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 919. [2020-08-18 15:16:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-08-18 15:16:59,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1098 transitions. [2020-08-18 15:16:59,345 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1098 transitions. Word has length 87 [2020-08-18 15:16:59,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:16:59,345 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1098 transitions. [2020-08-18 15:16:59,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:16:59,346 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1098 transitions. [2020-08-18 15:16:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-18 15:16:59,351 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:16:59,351 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:16:59,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:16:59,352 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:16:59,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:16:59,352 INFO L82 PathProgramCache]: Analyzing trace with hash -2007066912, now seen corresponding path program 1 times [2020-08-18 15:16:59,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:16:59,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181432827] [2020-08-18 15:16:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:16:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:16:59,436 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:16:59,436 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:16:59,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 15:16:59,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:16:59 BoogieIcfgContainer [2020-08-18 15:16:59,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:16:59,492 INFO L168 Benchmark]: Toolchain (without parser) took 32021.10 ms. Allocated memory was 149.4 MB in the beginning and 600.3 MB in the end (delta: 450.9 MB). Free memory was 104.2 MB in the beginning and 515.3 MB in the end (delta: -411.1 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. [2020-08-18 15:16:59,493 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 149.4 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 15:16:59,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.00 ms. Allocated memory was 149.4 MB in the beginning and 206.6 MB in the end (delta: 57.1 MB). Free memory was 104.0 MB in the beginning and 175.6 MB in the end (delta: -71.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:16:59,501 INFO L168 Benchmark]: Boogie Preprocessor took 88.26 ms. Allocated memory is still 206.6 MB. Free memory was 175.6 MB in the beginning and 170.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-08-18 15:16:59,502 INFO L168 Benchmark]: RCFGBuilder took 1126.95 ms. Allocated memory was 206.6 MB in the beginning and 234.9 MB in the end (delta: 28.3 MB). Free memory was 170.7 MB in the beginning and 193.6 MB in the end (delta: -22.9 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. [2020-08-18 15:16:59,505 INFO L168 Benchmark]: TraceAbstraction took 30167.22 ms. Allocated memory was 234.9 MB in the beginning and 600.3 MB in the end (delta: 365.4 MB). Free memory was 193.6 MB in the beginning and 515.3 MB in the end (delta: -321.7 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. [2020-08-18 15:16:59,514 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 149.4 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 633.00 ms. Allocated memory was 149.4 MB in the beginning and 206.6 MB in the end (delta: 57.1 MB). Free memory was 104.0 MB in the beginning and 175.6 MB in the end (delta: -71.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.26 ms. Allocated memory is still 206.6 MB. Free memory was 175.6 MB in the beginning and 170.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1126.95 ms. Allocated memory was 206.6 MB in the beginning and 234.9 MB in the end (delta: 28.3 MB). Free memory was 170.7 MB in the beginning and 193.6 MB in the end (delta: -22.9 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30167.22 ms. Allocated memory was 234.9 MB in the beginning and 600.3 MB in the end (delta: 365.4 MB). Free memory was 193.6 MB in the beginning and 515.3 MB in the end (delta: -321.7 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 284]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] int waterLevel = 1; [L86] int methaneLevelCritical = 0; [L179] int cleanupTimeShifts = 4; [L292] int pumpRunning = 0; [L293] int systemActive = 1; [L679] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L876] int methAndRunningLastTime ; [L257] int retValue_acc ; [L258] int tmp ; [L262] FCALL select_helpers() [L263] FCALL select_features() [L264] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L264] RET, EXPR valid_product() [L264] tmp = valid_product() [L266] COND TRUE \read(tmp) [L268] FCALL setup() [L269] CALL runTest() [L250] CALL __utac_acc__Specification2_spec__1() [L881] methAndRunningLastTime = 0 [L250] RET __utac_acc__Specification2_spec__1() [L251] CALL test() [L446] int splverifierCounter ; [L447] int tmp ; [L448] int tmp___0 ; [L449] int tmp___1 ; [L450] int tmp___2 ; [L453] splverifierCounter = 0 [L455] COND TRUE 1 [L457] COND TRUE splverifierCounter < 4 [L463] tmp = __VERIFIER_nondet_int() [L465] COND TRUE \read(tmp) [L467] CALL waterRise() [L103] COND TRUE waterLevel < 2 [L104] waterLevel = waterLevel + 1 [L467] RET waterRise() [L473] tmp___0 = __VERIFIER_nondet_int() [L475] COND TRUE \read(tmp___0) [L477] CALL changeMethaneLevel() [L115] COND FALSE !(\read(methaneLevelCritical)) [L118] methaneLevelCritical = 1 [L477] RET changeMethaneLevel() [L483] tmp___2 = __VERIFIER_nondet_int() [L485] COND TRUE \read(tmp___2) [L498] CALL timeShift() [L300] COND FALSE !(\read(pumpRunning)) [L307] COND TRUE \read(systemActive) [L309] CALL processEnvironment() [L329] int tmp ; [L332] COND TRUE ! pumpRunning [L334] CALL, EXPR isHighWaterLevel() [L426] int retValue_acc ; [L427] int tmp ; [L428] int tmp___0 ; [L432] CALL, EXPR isHighWaterSensorDry() [L165] int retValue_acc ; [L168] COND FALSE !(waterLevel < 2) [L172] retValue_acc = 0 [L173] return (retValue_acc); [L432] RET, EXPR isHighWaterSensorDry() [L432] tmp = isHighWaterSensorDry() [L434] COND FALSE !(\read(tmp)) [L437] tmp___0 = 1 [L439] retValue_acc = tmp___0 [L440] return (retValue_acc); [L334] RET, EXPR isHighWaterLevel() [L334] tmp = isHighWaterLevel() [L336] COND TRUE \read(tmp) [L338] CALL activatePump() [L357] pumpRunning = 1 [L338] RET activatePump() [L309] RET processEnvironment() [L315] CALL __utac_acc__Specification2_spec__2() [L886] int tmp ; [L887] int tmp___0 ; [L891] CALL, EXPR isMethaneLevelCritical() [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); [L891] RET, EXPR isMethaneLevelCritical() [L891] tmp = isMethaneLevelCritical() [L893] COND TRUE \read(tmp) [L895] CALL, EXPR isPumpRunning() [L381] int retValue_acc ; [L384] retValue_acc = pumpRunning [L385] return (retValue_acc); [L895] RET, EXPR isPumpRunning() [L895] tmp___0 = isPumpRunning() [L897] COND TRUE \read(tmp___0) [L898] COND FALSE !(\read(methAndRunningLastTime)) [L903] methAndRunningLastTime = 1 [L315] RET __utac_acc__Specification2_spec__2() [L498] RET timeShift() [L455] COND TRUE 1 [L457] COND TRUE splverifierCounter < 4 [L463] tmp = __VERIFIER_nondet_int() [L465] COND FALSE !(\read(tmp)) [L473] tmp___0 = __VERIFIER_nondet_int() [L475] COND FALSE !(\read(tmp___0)) [L483] tmp___2 = __VERIFIER_nondet_int() [L485] COND TRUE \read(tmp___2) [L498] CALL timeShift() [L300] COND TRUE \read(pumpRunning) [L302] CALL lowerWaterLevel() [L91] COND TRUE waterLevel > 0 [L92] waterLevel = waterLevel - 1 [L302] RET lowerWaterLevel() [L307] COND TRUE \read(systemActive) [L309] CALL processEnvironment() [L329] int tmp ; [L332] COND FALSE !(! pumpRunning) [L347] FCALL processEnvironment__wrappee__base() [L309] RET processEnvironment() [L315] CALL __utac_acc__Specification2_spec__2() [L886] int tmp ; [L887] int tmp___0 ; [L891] CALL, EXPR isMethaneLevelCritical() [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); [L891] RET, EXPR isMethaneLevelCritical() [L891] tmp = isMethaneLevelCritical() [L893] COND TRUE \read(tmp) [L895] CALL, EXPR isPumpRunning() [L381] int retValue_acc ; [L384] retValue_acc = pumpRunning [L385] return (retValue_acc); [L895] RET, EXPR isPumpRunning() [L895] tmp___0 = isPumpRunning() [L897] COND TRUE \read(tmp___0) [L898] COND TRUE \read(methAndRunningLastTime) [L900] CALL __automaton_fail() [L284] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 220 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.0s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 24.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 973 SDtfs, 2411 SDslu, 1143 SDs, 0 SdLazy, 4901 SolverSat, 1531 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 413 GetRequests, 259 SyntacticMatches, 3 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=919occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 841 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 848 NumberOfCodeBlocks, 848 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 709 ConstructedInterpolants, 0 QuantifiedInterpolants, 223096 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...