/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:42:07,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:42:07,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:42:07,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:42:07,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:42:07,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:42:07,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:42:07,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:42:07,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:42:07,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:42:07,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:42:07,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:42:07,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:42:07,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:42:07,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:42:07,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:42:07,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:42:07,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:42:07,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:42:07,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:42:07,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:42:07,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:42:07,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:42:07,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:42:07,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:42:07,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:42:07,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:42:07,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:42:07,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:42:07,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:42:07,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:42:07,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:42:07,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:42:07,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:42:07,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:42:07,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:42:07,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:42:07,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:42:07,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:42:07,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:42:07,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:42:07,210 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 [2020-09-24 14:42:07,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:42:07,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:42:07,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:42:07,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:42:07,239 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:42:07,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:42:07,239 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:42:07,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:42:07,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:42:07,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:42:07,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:42:07,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:42:07,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:42:07,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:42:07,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:42:07,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:42:07,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:42:07,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:42:07,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:42:07,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:42:07,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:42:07,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:42:07,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:42:07,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:42:07,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:42:07,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:42:07,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:42:07,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:42:07,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:42:07,244 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:42:07,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:42:07,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:42:07,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:42:07,747 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:42:07,747 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:42:07,748 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2020-09-24 14:42:07,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf00d2708/1628cceb3fe44f00b7af2be0028bad44/FLAG98bb0b398 [2020-09-24 14:42:08,434 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:42:08,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2020-09-24 14:42:08,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf00d2708/1628cceb3fe44f00b7af2be0028bad44/FLAG98bb0b398 [2020-09-24 14:42:08,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf00d2708/1628cceb3fe44f00b7af2be0028bad44 [2020-09-24 14:42:08,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:42:08,694 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:42:08,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:42:08,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:42:08,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:42:08,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:42:08" (1/1) ... [2020-09-24 14:42:08,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:08, skipping insertion in model container [2020-09-24 14:42:08,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:42:08" (1/1) ... [2020-09-24 14:42:08,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:42:08,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:42:09,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:42:09,244 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:42:09,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:42:09,368 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:42:09,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:09 WrapperNode [2020-09-24 14:42:09,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:42:09,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:42:09,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:42:09,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:42:09,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:09" (1/1) ... [2020-09-24 14:42:09,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:09" (1/1) ... [2020-09-24 14:42:09,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:09" (1/1) ... [2020-09-24 14:42:09,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:09" (1/1) ... [2020-09-24 14:42:09,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:09" (1/1) ... [2020-09-24 14:42:09,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:09" (1/1) ... [2020-09-24 14:42:09,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:09" (1/1) ... [2020-09-24 14:42:09,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:42:09,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:42:09,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:42:09,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:42:09,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:09" (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 [2020-09-24 14:42:09,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:42:09,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:42:09,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 14:42:09,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 14:42:09,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 14:42:09,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 14:42:09,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 14:42:09,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 14:42:09,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 14:42:09,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 14:42:09,587 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 14:42:09,587 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 14:42:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 14:42:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 14:42:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:42:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 14:42:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 14:42:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 14:42:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 14:42:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 14:42:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 14:42:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 14:42:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 14:42:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 14:42:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 14:42:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 14:42:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 14:42:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 14:42:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 14:42:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 14:42:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 14:42:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 14:42:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 14:42:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 14:42:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 14:42:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 14:42:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 14:42:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 14:42:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-24 14:42:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-24 14:42:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:42:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:42:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 14:42:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 14:42:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 14:42:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 14:42:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 14:42:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 14:42:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 14:42:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:42:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 14:42:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 14:42:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:42:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 14:42:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 14:42:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:42:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 14:42:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 14:42:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:42:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 14:42:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 14:42:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 14:42:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 14:42:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 14:42:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 14:42:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 14:42:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 14:42:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 14:42:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-24 14:42:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 14:42:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 14:42:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 14:42:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 14:42:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 14:42:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:42:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 14:42:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 14:42:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 14:42:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 14:42:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 14:42:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 14:42:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 14:42:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-24 14:42:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 14:42:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 14:42:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 14:42:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 14:42:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 14:42:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 14:42:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 14:42:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 14:42:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:42:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 14:42:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:42:10,752 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:42:10,753 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 14:42:10,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:42:10 BoogieIcfgContainer [2020-09-24 14:42:10,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:42:10,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:42:10,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:42:10,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:42:10,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:42:08" (1/3) ... [2020-09-24 14:42:10,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137af21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:42:10, skipping insertion in model container [2020-09-24 14:42:10,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:09" (2/3) ... [2020-09-24 14:42:10,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137af21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:42:10, skipping insertion in model container [2020-09-24 14:42:10,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:42:10" (3/3) ... [2020-09-24 14:42:10,768 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2020-09-24 14:42:10,780 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:42:10,791 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:42:10,813 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:42:10,847 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:42:10,848 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:42:10,848 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:42:10,848 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:42:10,848 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:42:10,848 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:42:10,848 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:42:10,849 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:42:10,879 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2020-09-24 14:42:10,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 14:42:10,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:10,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:10,900 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:10,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1778587784, now seen corresponding path program 1 times [2020-09-24 14:42:10,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:10,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263009389] [2020-09-24 14:42:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,743 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:11,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:42:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 14:42:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:11,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263009389] [2020-09-24 14:42:11,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:11,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:42:11,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845044235] [2020-09-24 14:42:11,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:42:11,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:11,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:42:11,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:42:11,957 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 4 states. [2020-09-24 14:42:13,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:13,235 INFO L93 Difference]: Finished difference Result 500 states and 593 transitions. [2020-09-24 14:42:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:42:13,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-24 14:42:13,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:13,271 INFO L225 Difference]: With dead ends: 500 [2020-09-24 14:42:13,272 INFO L226 Difference]: Without dead ends: 317 [2020-09-24 14:42:13,283 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 [2020-09-24 14:42:13,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-09-24 14:42:13,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 268. [2020-09-24 14:42:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-09-24 14:42:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 293 transitions. [2020-09-24 14:42:13,388 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 293 transitions. Word has length 148 [2020-09-24 14:42:13,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:13,392 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 293 transitions. [2020-09-24 14:42:13,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:42:13,392 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 293 transitions. [2020-09-24 14:42:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 14:42:13,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:13,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:13,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:42:13,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:13,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:13,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1462569600, now seen corresponding path program 1 times [2020-09-24 14:42:13,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:13,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977528435] [2020-09-24 14:42:13,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,882 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:13,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 14:42:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 14:42:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:14,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:14,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977528435] [2020-09-24 14:42:14,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:14,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:42:14,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363837765] [2020-09-24 14:42:14,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:42:14,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:14,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:42:14,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:42:14,020 INFO L87 Difference]: Start difference. First operand 268 states and 293 transitions. Second operand 5 states. [2020-09-24 14:42:14,667 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:15,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:15,733 INFO L93 Difference]: Finished difference Result 429 states and 488 transitions. [2020-09-24 14:42:15,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 14:42:15,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-24 14:42:15,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:15,740 INFO L225 Difference]: With dead ends: 429 [2020-09-24 14:42:15,741 INFO L226 Difference]: Without dead ends: 306 [2020-09-24 14:42:15,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:42:15,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-24 14:42:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 258. [2020-09-24 14:42:15,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-24 14:42:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 280 transitions. [2020-09-24 14:42:15,801 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 280 transitions. Word has length 149 [2020-09-24 14:42:15,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:15,802 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 280 transitions. [2020-09-24 14:42:15,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:42:15,802 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 280 transitions. [2020-09-24 14:42:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 14:42:15,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:15,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:15,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:42:15,806 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:15,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:15,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1860838865, now seen corresponding path program 1 times [2020-09-24 14:42:15,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:15,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674536071] [2020-09-24 14:42:15,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,266 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:16,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 14:42:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 14:42:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:16,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674536071] [2020-09-24 14:42:16,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:16,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 14:42:16,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531947771] [2020-09-24 14:42:16,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 14:42:16,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:16,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 14:42:16,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:42:16,473 INFO L87 Difference]: Start difference. First operand 258 states and 280 transitions. Second operand 10 states. [2020-09-24 14:42:17,149 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:17,524 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:42:17,804 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:42:18,110 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:18,445 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:42:18,777 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:20,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:20,646 INFO L93 Difference]: Finished difference Result 449 states and 514 transitions. [2020-09-24 14:42:20,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 14:42:20,647 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-09-24 14:42:20,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:20,651 INFO L225 Difference]: With dead ends: 449 [2020-09-24 14:42:20,651 INFO L226 Difference]: Without dead ends: 306 [2020-09-24 14:42:20,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-24 14:42:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-24 14:42:20,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 258. [2020-09-24 14:42:20,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-24 14:42:20,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 279 transitions. [2020-09-24 14:42:20,691 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 279 transitions. Word has length 158 [2020-09-24 14:42:20,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:20,691 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 279 transitions. [2020-09-24 14:42:20,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 14:42:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 279 transitions. [2020-09-24 14:42:20,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-24 14:42:20,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:20,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:20,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:42:20,695 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:20,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:20,696 INFO L82 PathProgramCache]: Analyzing trace with hash -2042254420, now seen corresponding path program 1 times [2020-09-24 14:42:20,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:20,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056766868] [2020-09-24 14:42:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:21,073 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:21,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:21,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:21,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:21,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:21,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:21,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:21,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 14:42:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:21,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:21,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:21,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 14:42:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:21,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-24 14:42:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:21,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:21,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056766868] [2020-09-24 14:42:21,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:21,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 14:42:21,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912473826] [2020-09-24 14:42:21,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 14:42:21,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:21,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 14:42:21,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:42:21,245 INFO L87 Difference]: Start difference. First operand 258 states and 279 transitions. Second operand 7 states. [2020-09-24 14:42:21,853 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:23,466 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:24,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:24,464 INFO L93 Difference]: Finished difference Result 596 states and 689 transitions. [2020-09-24 14:42:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 14:42:24,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-24 14:42:24,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:24,476 INFO L225 Difference]: With dead ends: 596 [2020-09-24 14:42:24,476 INFO L226 Difference]: Without dead ends: 453 [2020-09-24 14:42:24,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-24 14:42:24,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-09-24 14:42:24,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 382. [2020-09-24 14:42:24,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-09-24 14:42:24,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 414 transitions. [2020-09-24 14:42:24,540 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 414 transitions. Word has length 171 [2020-09-24 14:42:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:24,541 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 414 transitions. [2020-09-24 14:42:24,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 14:42:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 414 transitions. [2020-09-24 14:42:24,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 14:42:24,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:24,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:24,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:42:24,545 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:24,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:24,545 INFO L82 PathProgramCache]: Analyzing trace with hash -991114482, now seen corresponding path program 1 times [2020-09-24 14:42:24,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:24,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881254012] [2020-09-24 14:42:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:24,925 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:24,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:24,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:24,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:24,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:25,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:25,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:25,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 14:42:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:25,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:25,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:25,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:42:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:25,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:42:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:25,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-24 14:42:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:25,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 14:42:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:25,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881254012] [2020-09-24 14:42:25,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:25,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 14:42:25,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930154461] [2020-09-24 14:42:25,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 14:42:25,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:25,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 14:42:25,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:42:25,164 INFO L87 Difference]: Start difference. First operand 382 states and 414 transitions. Second operand 10 states. [2020-09-24 14:42:25,764 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:27,475 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:27,856 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:42:28,231 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:28,547 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:29,141 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:29,459 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:42:29,778 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:30,181 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:31,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:31,419 INFO L93 Difference]: Finished difference Result 980 states and 1141 transitions. [2020-09-24 14:42:31,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 14:42:31,420 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 195 [2020-09-24 14:42:31,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:31,426 INFO L225 Difference]: With dead ends: 980 [2020-09-24 14:42:31,426 INFO L226 Difference]: Without dead ends: 713 [2020-09-24 14:42:31,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-09-24 14:42:31,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-09-24 14:42:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 603. [2020-09-24 14:42:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 14:42:31,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 659 transitions. [2020-09-24 14:42:31,506 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 659 transitions. Word has length 195 [2020-09-24 14:42:31,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:31,507 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 659 transitions. [2020-09-24 14:42:31,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 14:42:31,507 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 659 transitions. [2020-09-24 14:42:31,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-24 14:42:31,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:31,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:31,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:42:31,511 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:31,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:31,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1113486424, now seen corresponding path program 1 times [2020-09-24 14:42:31,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:31,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668255139] [2020-09-24 14:42:31,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:31,936 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:31,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:42:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 14:42:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:42:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:42:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-24 14:42:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-24 14:42:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:32,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668255139] [2020-09-24 14:42:32,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:32,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 14:42:32,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269865155] [2020-09-24 14:42:32,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 14:42:32,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:32,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 14:42:32,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:42:32,163 INFO L87 Difference]: Start difference. First operand 603 states and 659 transitions. Second operand 11 states. [2020-09-24 14:42:32,738 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:34,439 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:34,745 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:35,123 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:36,239 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:36,567 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:42:36,911 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:37,229 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:42:37,521 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:37,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:37,966 INFO L93 Difference]: Finished difference Result 1262 states and 1455 transitions. [2020-09-24 14:42:37,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 14:42:37,966 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 200 [2020-09-24 14:42:37,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:37,972 INFO L225 Difference]: With dead ends: 1262 [2020-09-24 14:42:37,972 INFO L226 Difference]: Without dead ends: 774 [2020-09-24 14:42:37,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 14:42:37,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-09-24 14:42:38,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 601. [2020-09-24 14:42:38,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2020-09-24 14:42:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 655 transitions. [2020-09-24 14:42:38,076 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 655 transitions. Word has length 200 [2020-09-24 14:42:38,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:38,076 INFO L479 AbstractCegarLoop]: Abstraction has 601 states and 655 transitions. [2020-09-24 14:42:38,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 14:42:38,077 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 655 transitions. [2020-09-24 14:42:38,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-24 14:42:38,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:38,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:38,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:42:38,081 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:38,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:38,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1401248748, now seen corresponding path program 1 times [2020-09-24 14:42:38,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:38,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314142346] [2020-09-24 14:42:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,409 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:38,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:42:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 14:42:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:42:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:42:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:42:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-24 14:42:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-24 14:42:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 14:42:38,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314142346] [2020-09-24 14:42:38,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:38,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 14:42:38,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760911126] [2020-09-24 14:42:38,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 14:42:38,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:38,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 14:42:38,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:42:38,688 INFO L87 Difference]: Start difference. First operand 601 states and 655 transitions. Second operand 11 states. [2020-09-24 14:42:40,014 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:40,329 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:42:40,651 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-24 14:42:40,958 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:41,282 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:42:41,570 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:42,945 INFO L93 Difference]: Finished difference Result 1274 states and 1489 transitions. [2020-09-24 14:42:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 14:42:42,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 223 [2020-09-24 14:42:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:42,951 INFO L225 Difference]: With dead ends: 1274 [2020-09-24 14:42:42,951 INFO L226 Difference]: Without dead ends: 788 [2020-09-24 14:42:42,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-24 14:42:42,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-24 14:42:43,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 617. [2020-09-24 14:42:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-09-24 14:42:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 671 transitions. [2020-09-24 14:42:43,030 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 671 transitions. Word has length 223 [2020-09-24 14:42:43,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:43,031 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 671 transitions. [2020-09-24 14:42:43,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 14:42:43,031 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 671 transitions. [2020-09-24 14:42:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-24 14:42:43,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:43,039 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:43,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:42:43,039 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:43,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:43,040 INFO L82 PathProgramCache]: Analyzing trace with hash 2068995148, now seen corresponding path program 1 times [2020-09-24 14:42:43,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:43,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675068501] [2020-09-24 14:42:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,400 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:43,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:42:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 14:42:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:42:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:42:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:42:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-24 14:42:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-24 14:42:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 14:42:43,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675068501] [2020-09-24 14:42:43,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:43,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 14:42:43,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653413972] [2020-09-24 14:42:43,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 14:42:43,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:43,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 14:42:43,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 14:42:43,689 INFO L87 Difference]: Start difference. First operand 617 states and 671 transitions. Second operand 14 states. [2020-09-24 14:42:44,333 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:44,645 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:42:44,966 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:45,290 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:42:45,586 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:46,595 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:46,909 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:42:47,236 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:47,560 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:42:47,861 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:49,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:49,512 INFO L93 Difference]: Finished difference Result 1308 states and 1525 transitions. [2020-09-24 14:42:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 14:42:49,513 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 223 [2020-09-24 14:42:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:49,518 INFO L225 Difference]: With dead ends: 1308 [2020-09-24 14:42:49,519 INFO L226 Difference]: Without dead ends: 806 [2020-09-24 14:42:49,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-24 14:42:49,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-24 14:42:49,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 629. [2020-09-24 14:42:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2020-09-24 14:42:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 683 transitions. [2020-09-24 14:42:49,594 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 683 transitions. Word has length 223 [2020-09-24 14:42:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:49,595 INFO L479 AbstractCegarLoop]: Abstraction has 629 states and 683 transitions. [2020-09-24 14:42:49,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 14:42:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 683 transitions. [2020-09-24 14:42:49,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-24 14:42:49,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:49,597 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:49,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:42:49,598 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:49,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:49,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1498866871, now seen corresponding path program 1 times [2020-09-24 14:42:49,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:49,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773819987] [2020-09-24 14:42:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:49,913 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:42:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 14:42:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:42:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:42:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:42:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-24 14:42:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-24 14:42:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:50,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 14:42:50,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773819987] [2020-09-24 14:42:50,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:50,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 14:42:50,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643086972] [2020-09-24 14:42:50,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 14:42:50,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:50,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 14:42:50,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 14:42:50,255 INFO L87 Difference]: Start difference. First operand 629 states and 683 transitions. Second operand 8 states. [2020-09-24 14:42:50,803 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:51,503 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:54,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:54,338 INFO L93 Difference]: Finished difference Result 1789 states and 2138 transitions. [2020-09-24 14:42:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 14:42:54,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-09-24 14:42:54,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:54,347 INFO L225 Difference]: With dead ends: 1789 [2020-09-24 14:42:54,348 INFO L226 Difference]: Without dead ends: 1275 [2020-09-24 14:42:54,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-09-24 14:42:54,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2020-09-24 14:42:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1043. [2020-09-24 14:42:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-09-24 14:42:54,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1165 transitions. [2020-09-24 14:42:54,526 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1165 transitions. Word has length 223 [2020-09-24 14:42:54,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:54,527 INFO L479 AbstractCegarLoop]: Abstraction has 1043 states and 1165 transitions. [2020-09-24 14:42:54,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 14:42:54,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1165 transitions. [2020-09-24 14:42:54,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-24 14:42:54,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:54,531 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:54,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:42:54,531 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:54,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:54,532 INFO L82 PathProgramCache]: Analyzing trace with hash -848713667, now seen corresponding path program 1 times [2020-09-24 14:42:54,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:54,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192551561] [2020-09-24 14:42:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:54,891 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:54,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:54,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:54,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:54,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:54,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:54,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:54,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 14:42:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:55,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 14:42:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:55,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 14:42:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:55,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:55,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:55,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:42:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:55,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:42:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:55,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:55,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:55,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:42:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:55,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-24 14:42:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:55,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-09-24 14:42:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 14:42:55,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192551561] [2020-09-24 14:42:55,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:42:55,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 14:42:55,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566310338] [2020-09-24 14:42:55,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 14:42:55,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:55,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 14:42:55,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-09-24 14:42:55,397 INFO L87 Difference]: Start difference. First operand 1043 states and 1165 transitions. Second operand 21 states. [2020-09-24 14:42:56,049 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:56,489 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:42:56,822 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 14:42:57,163 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:42:57,486 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:42:57,795 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:42:58,898 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:43:00,397 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:43:00,782 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-24 14:43:01,164 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:43:01,547 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:43:01,883 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-24 14:43:02,230 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-24 14:43:02,544 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:43:02,900 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-24 14:43:03,238 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:43:03,663 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-24 14:43:04,031 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:43:04,419 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-24 14:43:05,130 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191