/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:12:14,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:12:14,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:12:14,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:12:14,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:12:14,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:12:14,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:12:14,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:12:14,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:12:14,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:12:14,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:12:14,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:12:14,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:12:14,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:12:14,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:12:14,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:12:14,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:12:14,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:12:14,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:12:14,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:12:14,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:12:14,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:12:14,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:12:14,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:12:14,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:12:14,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:12:14,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:12:14,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:12:14,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:12:14,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:12:14,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:12:14,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:12:14,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:12:14,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:12:14,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:12:14,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:12:14,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:12:14,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:12:14,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:12:14,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:12:14,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:12:14,232 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 [2020-09-21 12:12:14,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:12:14,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:12:14,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:12:14,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:12:14,261 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:12:14,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:12:14,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:12:14,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:12:14,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:12:14,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:12:14,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:12:14,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:12:14,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:12:14,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:12:14,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:12:14,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:12:14,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:12:14,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:12:14,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:12:14,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:12:14,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:12:14,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:12:14,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:12:14,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:12:14,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:12:14,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:12:14,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:12:14,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:12:14,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:12:14,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:12:14,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:12:14,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:12:14,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:12:14,787 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:12:14,789 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:12:14,791 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product32.cil.c [2020-09-21 12:12:14,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9eff577fa/1253709cb4a44fb3932ecb2120c7c010/FLAG8078054f1 [2020-09-21 12:12:15,495 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:12:15,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product32.cil.c [2020-09-21 12:12:15,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9eff577fa/1253709cb4a44fb3932ecb2120c7c010/FLAG8078054f1 [2020-09-21 12:12:15,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9eff577fa/1253709cb4a44fb3932ecb2120c7c010 [2020-09-21 12:12:15,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:12:15,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:12:15,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:12:15,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:12:15,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:12:15,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:12:15" (1/1) ... [2020-09-21 12:12:15,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e5903c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:15, skipping insertion in model container [2020-09-21 12:12:15,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:12:15" (1/1) ... [2020-09-21 12:12:15,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:12:15,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:12:16,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:12:16,260 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:12:16,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:12:16,540 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:12:16,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:16 WrapperNode [2020-09-21 12:12:16,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:12:16,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:12:16,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:12:16,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:12:16,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:16" (1/1) ... [2020-09-21 12:12:16,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:16" (1/1) ... [2020-09-21 12:12:16,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:16" (1/1) ... [2020-09-21 12:12:16,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:16" (1/1) ... [2020-09-21 12:12:16,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:16" (1/1) ... [2020-09-21 12:12:16,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:16" (1/1) ... [2020-09-21 12:12:16,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:16" (1/1) ... [2020-09-21 12:12:16,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:12:16,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:12:16,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:12:16,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:12:16,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:16" (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 [2020-09-21 12:12:16,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:12:16,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:12:16,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:12:16,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:12:16,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:12:16,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:12:16,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:12:16,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:12:16,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:12:16,744 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:12:16,744 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:12:16,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:12:16,745 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 12:12:16,745 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:12:16,745 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 12:12:16,745 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:12:16,745 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:12:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:12:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:12:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:12:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 12:12:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 12:12:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 12:12:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:12:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:12:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:12:16,747 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:12:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:12:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:12:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 12:12:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:12:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:12:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:12:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:12:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:12:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:12:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:12:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:12:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:12:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:12:16,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 12:12:16,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:12:16,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:12:16,750 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:12:16,750 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:12:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:12:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:12:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:12:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:12:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:12:16,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:12:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:12:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:12:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:12:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:12:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:12:16,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:12:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:12:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:12:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:12:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:12:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:12:16,753 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:12:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 12:12:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 12:12:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:12:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:12:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:12:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:12:16,754 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:12:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:12:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 12:12:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:12:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:12:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:12:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:12:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 12:12:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:12:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:12:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 12:12:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 12:12:16,757 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:12:16,757 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 12:12:16,757 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:12:16,757 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:12:16,757 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:12:16,757 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:12:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:12:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:12:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:12:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:12:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:12:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:12:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:12:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:12:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:12:17,982 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:12:17,983 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:12:17,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:12:17 BoogieIcfgContainer [2020-09-21 12:12:17,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:12:18,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:12:18,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:12:18,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:12:18,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:12:15" (1/3) ... [2020-09-21 12:12:18,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b02a41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:12:18, skipping insertion in model container [2020-09-21 12:12:18,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:12:16" (2/3) ... [2020-09-21 12:12:18,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b02a41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:12:18, skipping insertion in model container [2020-09-21 12:12:18,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:12:17" (3/3) ... [2020-09-21 12:12:18,010 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product32.cil.c [2020-09-21 12:12:18,023 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:12:18,037 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:12:18,058 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:12:18,087 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:12:18,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:12:18,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:12:18,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:12:18,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:12:18,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:12:18,088 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:12:18,088 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:12:18,115 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-09-21 12:12:18,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:12:18,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:18,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:12:18,131 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:18,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:18,140 INFO L82 PathProgramCache]: Analyzing trace with hash 628645976, now seen corresponding path program 1 times [2020-09-21 12:12:18,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:18,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568699076] [2020-09-21 12:12:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:18,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:18,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:19,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:19,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:12:19,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:12:19,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-21 12:12:19,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:12:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:12:19,918 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:12:19,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:12:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:19,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:19,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:19,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:19,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:19,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:12:19,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:20,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:12:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:20,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:20,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:20,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:20,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:20,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:20,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:20,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:20,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:12:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:20,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:20,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:20,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:20,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:20,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:20,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:20,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:12:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:20,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:20,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:20,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:20,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:20,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:12:20,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:20,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:20,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:20,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:12:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:20,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:20,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:20,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:20,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:20,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:20,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:20,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:20,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:12:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:20,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:20,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:20,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:20,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:20,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:12:20,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:20,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:20,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:20,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:20,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:12:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:20,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:20,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:20,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:20,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:20,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:20,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:20,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:20,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:12:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:20,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:20,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:20,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:20,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:20,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:12:20,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:20,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:20,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:20,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:20,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:12:20,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568699076] [2020-09-21 12:12:20,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:12:20,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:12:20,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226554199] [2020-09-21 12:12:20,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:12:20,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:12:20,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:12:20,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:12:20,176 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-09-21 12:12:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:12:21,428 INFO L93 Difference]: Finished difference Result 314 states and 413 transitions. [2020-09-21 12:12:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:12:21,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 12:12:21,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:12:21,454 INFO L225 Difference]: With dead ends: 314 [2020-09-21 12:12:21,454 INFO L226 Difference]: Without dead ends: 170 [2020-09-21 12:12:21,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:12:21,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-21 12:12:21,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 135. [2020-09-21 12:12:21,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-21 12:12:21,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-09-21 12:12:21,650 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 52 [2020-09-21 12:12:21,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:12:21,651 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-09-21 12:12:21,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:12:21,652 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-09-21 12:12:21,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 12:12:21,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:21,664 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] [2020-09-21 12:12:21,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:12:21,665 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:21,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:21,672 INFO L82 PathProgramCache]: Analyzing trace with hash 364620848, now seen corresponding path program 1 times [2020-09-21 12:12:21,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:21,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130304305] [2020-09-21 12:12:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:21,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:21,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:22,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:22,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 12:12:22,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:12:22,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1063 [2020-09-21 12:12:22,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:22,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:22,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:12:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:12:22,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:23,129 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:12:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:12:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:23,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:23,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:23,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:23,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:23,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 12:12:23,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:23,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:23,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:12:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:23,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:23,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:23,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:23,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:23,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:23,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:23,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:12:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:23,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:23,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:23,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:23,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:23,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:23,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:23,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:23,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:12:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:23,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:23,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:23,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:23,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:23,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:23,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:23,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:23,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:12:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:23,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:23,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:23,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:23,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:23,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:23,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:23,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:23,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:23,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:23,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:23,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:12:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:23,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:23,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:23,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:23,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:23,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:23,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:23,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:23,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:12:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:23,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:23,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:23,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:23,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:23,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:23,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:23,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:23,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 12:12:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:23,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:23,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:23,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:23,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:23,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:23,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:23,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:23,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:23,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:23,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:12:23,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130304305] [2020-09-21 12:12:23,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:12:23,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:12:23,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232318276] [2020-09-21 12:12:23,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:12:23,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:12:23,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:12:23,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:12:23,310 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 4 states. [2020-09-21 12:12:23,859 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:12:24,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:12:24,728 INFO L93 Difference]: Finished difference Result 237 states and 292 transitions. [2020-09-21 12:12:24,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:12:24,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 12:12:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:12:24,732 INFO L225 Difference]: With dead ends: 237 [2020-09-21 12:12:24,733 INFO L226 Difference]: Without dead ends: 154 [2020-09-21 12:12:24,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:12:24,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-21 12:12:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 126. [2020-09-21 12:12:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-21 12:12:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2020-09-21 12:12:24,801 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 53 [2020-09-21 12:12:24,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:12:24,801 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2020-09-21 12:12:24,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:12:24,801 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2020-09-21 12:12:24,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 12:12:24,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:24,807 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] [2020-09-21 12:12:24,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:12:24,807 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:24,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:24,808 INFO L82 PathProgramCache]: Analyzing trace with hash -840364754, now seen corresponding path program 1 times [2020-09-21 12:12:24,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:24,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277227945] [2020-09-21 12:12:24,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:24,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:25,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:25,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:25,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-21 12:12:25,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:12:25,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-09-21 12:12:25,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:12:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:25,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:12:25,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:26,387 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:12:26,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:12:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:26,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:26,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:26,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:26,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:26,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-21 12:12:26,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:12:26,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:26,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:12:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:26,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:26,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:26,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:26,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:26,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:12:26,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:26,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:26,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:12:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:26,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:26,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:26,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:26,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:26,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:12:26,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:26,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:26,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:26,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 33 [2020-09-21 12:12:26,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:12:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:26,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:26,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:26,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:26,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:26,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:12:26,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:12:26,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:26,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:12:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:26,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:26,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:26,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:26,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:26,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:26,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:26,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:12:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:26,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:26,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:26,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:26,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:26,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:26,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:26,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:26,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:26,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:26,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:12:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:26,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:26,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:26,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:26,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:26,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:26,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:26,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:26,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:26,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:26,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:26,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 12:12:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:26,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:26,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:26,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:26,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:26,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:26,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:26,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:26,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:12:26,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:12:26,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277227945] [2020-09-21 12:12:26,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:12:26,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:12:26,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979023645] [2020-09-21 12:12:26,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:12:26,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:12:26,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:12:26,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:12:26,738 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand 5 states. [2020-09-21 12:12:27,185 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:12:28,139 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:12:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:12:29,919 INFO L93 Difference]: Finished difference Result 439 states and 548 transitions. [2020-09-21 12:12:29,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:12:29,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-09-21 12:12:29,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:12:29,930 INFO L225 Difference]: With dead ends: 439 [2020-09-21 12:12:29,931 INFO L226 Difference]: Without dead ends: 337 [2020-09-21 12:12:29,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:12:29,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-09-21 12:12:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 272. [2020-09-21 12:12:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-21 12:12:30,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 331 transitions. [2020-09-21 12:12:30,075 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 331 transitions. Word has length 58 [2020-09-21 12:12:30,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:12:30,076 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 331 transitions. [2020-09-21 12:12:30,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:12:30,076 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 331 transitions. [2020-09-21 12:12:30,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-21 12:12:30,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:30,077 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] [2020-09-21 12:12:30,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:12:30,078 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:30,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:30,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1271614513, now seen corresponding path program 1 times [2020-09-21 12:12:30,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:30,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93291608] [2020-09-21 12:12:30,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:30,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:31,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:31,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 12:12:31,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:31,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-21 12:12:31,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:12:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 12:12:31,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:31,460 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:12:31,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:12:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:31,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:31,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:31,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:31,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-21 12:12:31,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:12:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:31,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:12:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:31,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:31,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:31,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:31,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:31,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:31,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:31,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:31,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:31,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:31,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:31,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:12:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:31,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:31,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:31,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:31,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:31,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:31,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:31,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:31,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:12:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:31,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:31,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:31,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:31,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:31,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:12:31,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:31,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:31,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:31,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:12:31,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:31,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:12:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:31,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:31,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:31,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:12:31,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:31,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:31,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:12:31,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:31,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:12:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:31,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:31,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:31,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:12:31,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:31,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:12:31,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:12:31,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:31,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:12:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:31,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:31,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:31,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:31,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:31,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:12:31,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:31,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:12:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:12:31,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:31,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:12:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:31,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:31,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:31,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:31,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:31,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:12:31,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:31,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:12:31,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:12:31,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:12:31,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:31,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 12:12:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:12:31,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:12:31,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:12:31,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:12:31,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:12:31,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:12:31,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:12:31,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:12:31,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:12:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:12:31,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:12:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:12:31,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93291608] [2020-09-21 12:12:31,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:12:31,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:12:31,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359785603] [2020-09-21 12:12:31,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:12:31,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:12:31,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:12:31,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:12:31,797 INFO L87 Difference]: Start difference. First operand 272 states and 331 transitions. Second operand 9 states. [2020-09-21 12:12:32,309 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:12:34,222 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 188 [2020-09-21 12:12:34,663 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:12:35,023 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:12:35,417 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:12:35,886 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:12:36,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:12:36,899 INFO L93 Difference]: Finished difference Result 865 states and 1151 transitions. [2020-09-21 12:12:36,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:12:36,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-09-21 12:12:36,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:12:36,906 INFO L225 Difference]: With dead ends: 865 [2020-09-21 12:12:36,906 INFO L226 Difference]: Without dead ends: 617 [2020-09-21 12:12:36,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:12:36,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-09-21 12:12:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 527. [2020-09-21 12:12:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-09-21 12:12:37,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 658 transitions. [2020-09-21 12:12:37,033 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 658 transitions. Word has length 63 [2020-09-21 12:12:37,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:12:37,033 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 658 transitions. [2020-09-21 12:12:37,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:12:37,034 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 658 transitions. [2020-09-21 12:12:37,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 12:12:37,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:12:37,037 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] [2020-09-21 12:12:37,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:12:37,038 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:12:37,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:12:37,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1708991285, now seen corresponding path program 1 times [2020-09-21 12:12:37,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:12:37,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751523394] [2020-09-21 12:12:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:12:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:12:37,103 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:12:37,103 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:12:37,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:12:37,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:12:37 BoogieIcfgContainer [2020-09-21 12:12:37,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:12:37,136 INFO L168 Benchmark]: Toolchain (without parser) took 21357.93 ms. Allocated memory was 140.0 MB in the beginning and 547.9 MB in the end (delta: 407.9 MB). Free memory was 102.1 MB in the beginning and 336.3 MB in the end (delta: -234.2 MB). Peak memory consumption was 173.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:37,137 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:12:37,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.84 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 173.8 MB in the end (delta: -72.4 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:37,139 INFO L168 Benchmark]: Boogie Preprocessor took 108.64 ms. Allocated memory is still 203.9 MB. Free memory was 173.8 MB in the beginning and 169.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:37,140 INFO L168 Benchmark]: RCFGBuilder took 1342.82 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 169.0 MB in the beginning and 198.0 MB in the end (delta: -29.0 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:37,141 INFO L168 Benchmark]: TraceAbstraction took 19134.83 ms. Allocated memory was 237.5 MB in the beginning and 547.9 MB in the end (delta: 310.4 MB). Free memory was 198.0 MB in the beginning and 336.3 MB in the end (delta: -138.3 MB). Peak memory consumption was 172.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:12:37,145 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 753.84 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 173.8 MB in the end (delta: -72.4 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.64 ms. Allocated memory is still 203.9 MB. Free memory was 173.8 MB in the beginning and 169.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1342.82 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 169.0 MB in the beginning and 198.0 MB in the end (delta: -29.0 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19134.83 ms. Allocated memory was 237.5 MB in the beginning and 547.9 MB in the end (delta: 310.4 MB). Free memory was 198.0 MB in the beginning and 336.3 MB in the end (delta: -138.3 MB). Peak memory consumption was 172.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 712]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L489] int pumpRunning = 0; [L490] int systemActive = 1; [L717] int cleanupTimeShifts = 4; [L886] int waterLevel = 1; [L887] int methaneLevelCritical = 0; [L793] int retValue_acc ; [L794] int tmp ; [L798] FCALL select_helpers() [L799] FCALL select_features() [L800] CALL, EXPR valid_product() [L877] int retValue_acc ; [L880] retValue_acc = 1 [L881] return (retValue_acc); [L800] RET, EXPR valid_product() [L800] tmp = valid_product() [L802] COND TRUE \read(tmp) [L804] FCALL setup() [L805] CALL runTest() [L784] CALL test() [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND TRUE \read(tmp) [L434] CALL waterRise() [L904] COND TRUE waterLevel < 2 [L905] waterLevel = waterLevel + 1 [L434] RET waterRise() [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND FALSE !(\read(tmp___0)) [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND FALSE !(\read(tmp___2)) [L458] tmp___1 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___1) [L462] CALL stopSystem() [L688] COND FALSE !(\read(pumpRunning)) [L695] systemActive = 0 [L462] RET stopSystem() [L469] CALL timeShift() [L497] COND FALSE !(\read(pumpRunning)) [L504] COND FALSE !(\read(systemActive)) [L512] CALL __utac_acc__Specification3_spec__1() [L818] int tmp ; [L819] int tmp___0 ; [L820] int tmp___1 ; [L824] CALL, EXPR isMethaneLevelCritical() [L925] int retValue_acc ; [L928] retValue_acc = methaneLevelCritical [L929] return (retValue_acc); [L824] RET, EXPR isMethaneLevelCritical() [L824] tmp = isMethaneLevelCritical() [L826] COND FALSE !(\read(tmp)) [L830] CALL, EXPR getWaterLevel() [L957] int retValue_acc ; [L960] retValue_acc = waterLevel [L961] return (retValue_acc); [L830] RET, EXPR getWaterLevel() [L830] tmp___0 = getWaterLevel() [L832] COND TRUE tmp___0 == 2 [L834] CALL, EXPR isPumpRunning() [L621] int retValue_acc ; [L624] retValue_acc = pumpRunning [L625] return (retValue_acc); [L834] RET, EXPR isPumpRunning() [L834] tmp___1 = isPumpRunning() [L836] COND FALSE !(\read(tmp___1)) [L840] CALL __automaton_fail() [L712] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 244 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 520 SDtfs, 932 SDslu, 289 SDs, 0 SdLazy, 1436 SolverSat, 616 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=527occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 218 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 65503 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...