/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_spec4_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:15:15,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:15:15,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:15:15,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:15:15,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:15:15,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:15:15,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:15:15,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:15:15,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:15:15,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:15:15,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:15:15,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:15:15,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:15:15,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:15:15,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:15:15,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:15:15,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:15:15,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:15:15,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:15:15,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:15:15,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:15:15,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:15:15,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:15:15,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:15:15,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:15:15,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:15:15,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:15:15,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:15:15,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:15:15,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:15:15,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:15:15,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:15:15,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:15:15,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:15:15,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:15:15,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:15:15,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:15:15,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:15:15,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:15:15,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:15:15,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:15:15,220 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 12:15:15,267 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:15:15,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:15:15,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:15:15,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:15:15,270 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:15:15,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:15:15,271 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:15:15,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:15:15,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:15:15,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:15:15,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:15:15,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:15:15,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:15:15,273 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:15:15,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:15:15,274 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:15:15,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:15:15,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:15:15,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:15:15,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:15:15,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:15:15,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:15:15,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:15:15,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:15:15,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:15:15,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:15:15,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:15:15,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:15:15,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:15:15,277 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 12:15:15,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:15:15,749 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:15:15,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:15:15,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:15:15,758 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:15:15,760 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-09-21 12:15:15,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d89d1a566/0dbc1252fc8f494c939efcfce51e33e0/FLAGbca36cda9 [2020-09-21 12:15:16,450 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:15:16,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-09-21 12:15:16,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d89d1a566/0dbc1252fc8f494c939efcfce51e33e0/FLAGbca36cda9 [2020-09-21 12:15:16,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d89d1a566/0dbc1252fc8f494c939efcfce51e33e0 [2020-09-21 12:15:16,737 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:15:16,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:15:16,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:15:16,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:15:16,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:15:16,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:15:16" (1/1) ... [2020-09-21 12:15:16,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ed4b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:16, skipping insertion in model container [2020-09-21 12:15:16,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:15:16" (1/1) ... [2020-09-21 12:15:16,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:15:16,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:15:17,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:15:17,343 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:15:17,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:15:17,486 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:15:17,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:17 WrapperNode [2020-09-21 12:15:17,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:15:17,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:15:17,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:15:17,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:15:17,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:17" (1/1) ... [2020-09-21 12:15:17,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:17" (1/1) ... [2020-09-21 12:15:17,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:17" (1/1) ... [2020-09-21 12:15:17,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:17" (1/1) ... [2020-09-21 12:15:17,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:17" (1/1) ... [2020-09-21 12:15:17,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:17" (1/1) ... [2020-09-21 12:15:17,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:17" (1/1) ... [2020-09-21 12:15:17,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:15:17,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:15:17,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:15:17,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:15:17,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:17" (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 12:15:17,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:15:17,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:15:17,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:15:17,722 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:15:17,723 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:15:17,723 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:15:17,723 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:15:17,723 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:15:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:15:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:15:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:15:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:15:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:15:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:15:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:15:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:15:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:15:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:15:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:15:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:15:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:15:17,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:15:17,728 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:15:17,728 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:15:17,729 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:15:17,729 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:15:17,730 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-21 12:15:17,730 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:15:17,730 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:15:17,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:15:17,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:15:17,730 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:15:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:15:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:15:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:15:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:15:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:15:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:15:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:15:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:15:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:15:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:15:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:15:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:15:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:15:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:15:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:15:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:15:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:15:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:15:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:15:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:15:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:15:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:15:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:15:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:15:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:15:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:15:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:15:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:15:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:15:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:15:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:15:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:15:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:15:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:15:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:15:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:15:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:15:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:15:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:15:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:15:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:15:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:15:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:15:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:15:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:15:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:15:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:15:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:15:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:15:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-21 12:15:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:15:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:15:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:15:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:15:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:15:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:15:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:15:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:15:18,788 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:15:18,788 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:15:18,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:15:18 BoogieIcfgContainer [2020-09-21 12:15:18,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:15:18,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:15:18,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:15:18,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:15:18,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:15:16" (1/3) ... [2020-09-21 12:15:18,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6655f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:15:18, skipping insertion in model container [2020-09-21 12:15:18,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:17" (2/3) ... [2020-09-21 12:15:18,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6655f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:15:18, skipping insertion in model container [2020-09-21 12:15:18,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:15:18" (3/3) ... [2020-09-21 12:15:18,810 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2020-09-21 12:15:18,822 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:15:18,834 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:15:18,855 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:15:18,884 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:15:18,884 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:15:18,884 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:15:18,884 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:15:18,885 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:15:18,885 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:15:18,885 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:15:18,885 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:15:18,911 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2020-09-21 12:15:18,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:15:18,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:18,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:18,924 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:18,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:18,931 INFO L82 PathProgramCache]: Analyzing trace with hash -219528545, now seen corresponding path program 1 times [2020-09-21 12:15:18,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:18,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229183424] [2020-09-21 12:15:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:19,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:19,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:19,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:20,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:20,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:15:20,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:15:20,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1376 [2020-09-21 12:15:20,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:15:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:20,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-21 12:15:21,155 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:21,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:21,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:21,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-21 12:15:21,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:21,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:21,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:21,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:21,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:21,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:21,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:21,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:21,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:21,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:21,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:21,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:21,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:21,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:21,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:21,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:21,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 12:15:21,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:21,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:21,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:21,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:21,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:21,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:21,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:21,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:21,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:15:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:21,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:21,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:21,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:21,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:21,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:21,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:15:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:21,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:21,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:21,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:21,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:21,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:21,492 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 12:15:21,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229183424] [2020-09-21 12:15:21,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:21,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:15:21,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287564661] [2020-09-21 12:15:21,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:15:21,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:21,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:15:21,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:15:21,531 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 3 states. [2020-09-21 12:15:22,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:22,657 INFO L93 Difference]: Finished difference Result 281 states and 365 transitions. [2020-09-21 12:15:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:15:22,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:15:22,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:22,678 INFO L225 Difference]: With dead ends: 281 [2020-09-21 12:15:22,678 INFO L226 Difference]: Without dead ends: 152 [2020-09-21 12:15:22,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:15:22,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-21 12:15:22,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2020-09-21 12:15:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-21 12:15:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-09-21 12:15:22,789 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 46 [2020-09-21 12:15:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:22,789 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-09-21 12:15:22,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:15:22,790 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-09-21 12:15:22,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:15:22,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:22,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:22,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:15:22,794 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:22,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:22,794 INFO L82 PathProgramCache]: Analyzing trace with hash 207659306, now seen corresponding path program 1 times [2020-09-21 12:15:22,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:22,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007112160] [2020-09-21 12:15:22,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:22,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:23,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:23,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:23,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:15:23,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:15:23,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-21 12:15:23,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:15:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:15:23,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:15:24,169 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:24,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:24,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:24,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:24,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 12:15:24,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:24,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:24,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:24,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:24,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:24,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:24,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:24,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:24,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:24,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:24,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:24,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:24,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:24,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:24,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:24,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:24,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:24,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:24,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:24,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:24,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:24,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:24,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:24,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:24,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:24,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:24,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:24,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:24,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:24,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:24,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:24,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:24,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:24,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:15:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:24,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:24,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:24,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:24,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:24,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:24,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:24,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:24,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:24,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:24,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:24,336 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 12:15:24,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007112160] [2020-09-21 12:15:24,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:24,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:15:24,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628672824] [2020-09-21 12:15:24,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:15:24,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:24,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:15:24,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:15:24,341 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 4 states. [2020-09-21 12:15:24,777 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:25,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:25,442 INFO L93 Difference]: Finished difference Result 214 states and 256 transitions. [2020-09-21 12:15:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:15:25,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:15:25,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:25,446 INFO L225 Difference]: With dead ends: 214 [2020-09-21 12:15:25,446 INFO L226 Difference]: Without dead ends: 136 [2020-09-21 12:15:25,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:15:25,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-21 12:15:25,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-09-21 12:15:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-21 12:15:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2020-09-21 12:15:25,497 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 47 [2020-09-21 12:15:25,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:25,497 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2020-09-21 12:15:25,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:15:25,498 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2020-09-21 12:15:25,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 12:15:25,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:25,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:25,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:15:25,512 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:25,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:25,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1269439858, now seen corresponding path program 1 times [2020-09-21 12:15:25,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:25,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779469233] [2020-09-21 12:15:25,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:25,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:25,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:26,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:26,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-21 12:15:26,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:26,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-21 12:15:26,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:26,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-21 12:15:26,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:27,003 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:27,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:27,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-21 12:15:27,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:27,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:27,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:27,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:27,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:27,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:15:27,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:27,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:27,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:27,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:15:27,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:27,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:27,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:27,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:27,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:27,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:27,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:27,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:27,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:27,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:27,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:15:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:27,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:27,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:27,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:15:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:27,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:27,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:27,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:27,307 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 12:15:27,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779469233] [2020-09-21 12:15:27,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:27,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:15:27,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237470504] [2020-09-21 12:15:27,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:15:27,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:27,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:15:27,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:15:27,312 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand 4 states. [2020-09-21 12:15:27,645 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:28,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:28,409 INFO L93 Difference]: Finished difference Result 223 states and 270 transitions. [2020-09-21 12:15:28,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:15:28,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-21 12:15:28,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:28,413 INFO L225 Difference]: With dead ends: 223 [2020-09-21 12:15:28,413 INFO L226 Difference]: Without dead ends: 136 [2020-09-21 12:15:28,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 12:15:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-21 12:15:28,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-09-21 12:15:28,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-21 12:15:28,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2020-09-21 12:15:28,444 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 51 [2020-09-21 12:15:28,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:28,445 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2020-09-21 12:15:28,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:15:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2020-09-21 12:15:28,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-21 12:15:28,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:28,446 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] [2020-09-21 12:15:28,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:15:28,447 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:28,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:28,447 INFO L82 PathProgramCache]: Analyzing trace with hash 6417079, now seen corresponding path program 1 times [2020-09-21 12:15:28,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:28,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18052556] [2020-09-21 12:15:28,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:28,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:28,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:29,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:29,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:29,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-21 12:15:29,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:15:29,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-09-21 12:15:29,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-21 12:15:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:15:29,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,040 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:30,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:30,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 12:15:30,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:30,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:30,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:30,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:30,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:30,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:30,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:30,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:30,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:30,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:30,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:30,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:30,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:30,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:30,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:30,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:30,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:30,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:30,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:30,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:15:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:15:30,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:15:30,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:30,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:15:30,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:15:30,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:30,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:30,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:30,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:30,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:30,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:30,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:30,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 12:15:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:30,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:30,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:30,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:30,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:30,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:30,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 12:15:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:30,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:30,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:30,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:30,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:30,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:30,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:30,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:30,283 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 12:15:30,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18052556] [2020-09-21 12:15:30,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:30,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:15:30,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118555872] [2020-09-21 12:15:30,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:15:30,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:30,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:15:30,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:15:30,288 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand 6 states. [2020-09-21 12:15:30,703 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:32,088 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:32,590 INFO L93 Difference]: Finished difference Result 306 states and 374 transitions. [2020-09-21 12:15:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:15:32,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-09-21 12:15:32,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:32,596 INFO L225 Difference]: With dead ends: 306 [2020-09-21 12:15:32,597 INFO L226 Difference]: Without dead ends: 219 [2020-09-21 12:15:32,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:15:32,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-09-21 12:15:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 178. [2020-09-21 12:15:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-21 12:15:32,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 203 transitions. [2020-09-21 12:15:32,655 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 203 transitions. Word has length 59 [2020-09-21 12:15:32,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:32,656 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 203 transitions. [2020-09-21 12:15:32,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:15:32,656 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 203 transitions. [2020-09-21 12:15:32,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-21 12:15:32,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:32,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:32,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:15:32,658 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:32,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:32,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1711068188, now seen corresponding path program 1 times [2020-09-21 12:15:32,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:32,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049898522] [2020-09-21 12:15:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:32,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:32,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:33,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:33,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:33,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-21 12:15:33,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:15:33,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-21 12:15:33,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:33,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:33,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-21 12:15:33,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:33,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:33,983 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:33,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:33,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:34,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:34,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:34,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:34,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:15:34,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:34,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:34,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:34,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:34,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:34,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:34,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:34,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:34,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:34,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:34,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:34,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:34,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:34,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:34,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:34,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:34,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:34,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:34,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:34,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:34,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:34,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:34,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:34,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:34,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:34,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:34,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:34,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:34,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:34,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:34,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:34,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:34,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:34,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:34,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:34,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:34,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:34,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:34,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:34,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:34,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:34,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:34,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:34,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:34,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:34,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:15:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:34,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:34,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:34,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:34,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:15:34,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:34,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-21 12:15:34,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:15:34,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:34,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:34,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:34,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:34,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:34,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:15:34,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:15:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:34,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:34,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:34,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:34,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:34,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:34,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:15:34,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:15:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:34,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:34,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:34,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:34,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:34,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:34,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:34,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-21 12:15:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:34,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:34,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 12:15:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:34,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:34,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:34,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:34,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:34,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:34,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:34,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 12:15:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:34,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:34,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:34,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:34,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:34,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:34,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:34,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:34,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:34,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:34,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:34,295 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 12:15:34,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049898522] [2020-09-21 12:15:34,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:34,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:15:34,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516710065] [2020-09-21 12:15:34,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:15:34,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:34,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:15:34,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:15:34,299 INFO L87 Difference]: Start difference. First operand 178 states and 203 transitions. Second operand 7 states. [2020-09-21 12:15:35,081 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:35,426 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:35,732 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:36,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:36,545 INFO L93 Difference]: Finished difference Result 374 states and 456 transitions. [2020-09-21 12:15:36,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:15:36,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2020-09-21 12:15:36,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:36,548 INFO L225 Difference]: With dead ends: 374 [2020-09-21 12:15:36,548 INFO L226 Difference]: Without dead ends: 220 [2020-09-21 12:15:36,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:15:36,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-21 12:15:36,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 182. [2020-09-21 12:15:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-21 12:15:36,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2020-09-21 12:15:36,604 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 73 [2020-09-21 12:15:36,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:36,605 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2020-09-21 12:15:36,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:15:36,606 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2020-09-21 12:15:36,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-21 12:15:36,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:36,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:36,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:15:36,607 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:36,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:36,608 INFO L82 PathProgramCache]: Analyzing trace with hash -212159846, now seen corresponding path program 1 times [2020-09-21 12:15:36,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:36,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303346457] [2020-09-21 12:15:36,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:37,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:37,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-21 12:15:37,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-09-21 12:15:37,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:37,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:15:37,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:37,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-21 12:15:37,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:37,997 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:37,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-21 12:15:38,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:38,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:38,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:38,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:38,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:38,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:38,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:38,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:15:38,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:38,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:38,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:38,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:38,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:38,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:15:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:15:38,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:15:38,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:15:38,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:38,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:15:38,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:38,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:38,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:15:38,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:38,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:38,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:38,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:38,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 12:15:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:15:38,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:38,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:38,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 12:15:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:38,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:38,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:38,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:38,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:38,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:38,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:38,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:38,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:38,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:38,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:38,356 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 12:15:38,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303346457] [2020-09-21 12:15:38,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:38,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:15:38,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820056291] [2020-09-21 12:15:38,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:15:38,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:38,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:15:38,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:15:38,366 INFO L87 Difference]: Start difference. First operand 182 states and 207 transitions. Second operand 8 states. [2020-09-21 12:15:38,764 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:39,953 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:40,292 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:40,616 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:40,922 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:41,358 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:42,183 INFO L93 Difference]: Finished difference Result 499 states and 622 transitions. [2020-09-21 12:15:42,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:15:42,184 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-09-21 12:15:42,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:42,187 INFO L225 Difference]: With dead ends: 499 [2020-09-21 12:15:42,187 INFO L226 Difference]: Without dead ends: 341 [2020-09-21 12:15:42,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:15:42,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-09-21 12:15:42,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 299. [2020-09-21 12:15:42,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-09-21 12:15:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 345 transitions. [2020-09-21 12:15:42,246 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 345 transitions. Word has length 73 [2020-09-21 12:15:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:42,247 INFO L479 AbstractCegarLoop]: Abstraction has 299 states and 345 transitions. [2020-09-21 12:15:42,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:15:42,247 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 345 transitions. [2020-09-21 12:15:42,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-21 12:15:42,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:42,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:42,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:15:42,249 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:42,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:42,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1945568352, now seen corresponding path program 1 times [2020-09-21 12:15:42,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:42,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576727947] [2020-09-21 12:15:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:42,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:42,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-21 12:15:43,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:43,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-09-21 12:15:43,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:15:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:15:43,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:43,658 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:43,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:43,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-21 12:15:43,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:43,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:43,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:43,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:43,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:43,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:43,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:43,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:43,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:43,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:43,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:43,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:15:43,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:43,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:43,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:43,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:43,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:43,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:43,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:15:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:43,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:15:43,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:43,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:15:43,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:15:43,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:43,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:15:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:15:43,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 12:15:43,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:15:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:15:43,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:43,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:43,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:43,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:43,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:43,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:43,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 12:15:43,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:43,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:43,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:43,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:15:44,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:44,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:44,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:15:44,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:15:44,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:44,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:44,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:44,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:44,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:44,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:44,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:44,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-21 12:15:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:44,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:44,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:44,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:44,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:44,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 12:15:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:44,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:44,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:44,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:44,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:44,058 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 12:15:44,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576727947] [2020-09-21 12:15:44,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:44,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:15:44,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896019708] [2020-09-21 12:15:44,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:15:44,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:44,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:15:44,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:15:44,061 INFO L87 Difference]: Start difference. First operand 299 states and 345 transitions. Second operand 9 states. [2020-09-21 12:15:44,499 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:45,024 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:46,721 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:47,849 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-09-21 12:15:49,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:49,019 INFO L93 Difference]: Finished difference Result 728 states and 905 transitions. [2020-09-21 12:15:49,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-21 12:15:49,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-09-21 12:15:49,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:49,025 INFO L225 Difference]: With dead ends: 728 [2020-09-21 12:15:49,025 INFO L226 Difference]: Without dead ends: 559 [2020-09-21 12:15:49,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-09-21 12:15:49,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-21 12:15:49,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 514. [2020-09-21 12:15:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-09-21 12:15:49,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 611 transitions. [2020-09-21 12:15:49,127 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 611 transitions. Word has length 77 [2020-09-21 12:15:49,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:49,128 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 611 transitions. [2020-09-21 12:15:49,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:15:49,128 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 611 transitions. [2020-09-21 12:15:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-21 12:15:49,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:49,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:49,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:15:49,130 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:49,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:49,130 INFO L82 PathProgramCache]: Analyzing trace with hash -75370973, now seen corresponding path program 1 times [2020-09-21 12:15:49,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:49,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242779421] [2020-09-21 12:15:49,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:49,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:49,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:50,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:50,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-21 12:15:50,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:15:50,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:15:50,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:50,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:50,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-21 12:15:50,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:50,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:50,462 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:50,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:50,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:50,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:50,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:50,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:50,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 12:15:50,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:50,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:50,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:50,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:50,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:50,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:50,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:50,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:50,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:50,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:50,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:50,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:50,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:50,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:50,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:50,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:50,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:50,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:50,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:50,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:50,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:50,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:50,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:50,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:50,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:50,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:50,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:50,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:50,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:50,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:50,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:50,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:50,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:15:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:50,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:50,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:50,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:50,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:50,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:50,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:50,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:50,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:15:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:50,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:50,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:50,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:15:50,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:50,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:15:50,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:50,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:15:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:50,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:50,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:50,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:50,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:50,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:15:50,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:50,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:15:50,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:50,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:50,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:50,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:50,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:50,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:50,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:50,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:50,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:50,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:50,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:50,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:50,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:50,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:50,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:50,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:50,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:50,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:50,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-21 12:15:50,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:50,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:50,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-21 12:15:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:50,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:50,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:50,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:50,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:50,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:50,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:50,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 12:15:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:50,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:50,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:50,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:50,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:50,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:50,771 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 12:15:50,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242779421] [2020-09-21 12:15:50,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:50,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:15:50,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040616480] [2020-09-21 12:15:50,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:15:50,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:50,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:15:50,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:15:50,774 INFO L87 Difference]: Start difference. First operand 514 states and 611 transitions. Second operand 9 states. [2020-09-21 12:15:51,747 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:52,029 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:52,317 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:52,619 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:53,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:53,626 INFO L93 Difference]: Finished difference Result 941 states and 1153 transitions. [2020-09-21 12:15:53,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:15:53,628 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-09-21 12:15:53,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:53,632 INFO L225 Difference]: With dead ends: 941 [2020-09-21 12:15:53,632 INFO L226 Difference]: Without dead ends: 561 [2020-09-21 12:15:53,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:15:53,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-09-21 12:15:53,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 519. [2020-09-21 12:15:53,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2020-09-21 12:15:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 617 transitions. [2020-09-21 12:15:53,737 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 617 transitions. Word has length 77 [2020-09-21 12:15:53,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:53,738 INFO L479 AbstractCegarLoop]: Abstraction has 519 states and 617 transitions. [2020-09-21 12:15:53,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:15:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 617 transitions. [2020-09-21 12:15:53,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-21 12:15:53,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:53,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:53,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:15:53,740 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:53,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:53,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1998599007, now seen corresponding path program 1 times [2020-09-21 12:15:53,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:53,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201165525] [2020-09-21 12:15:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:53,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:53,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:54,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:54,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-21 12:15:54,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:54,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-09-21 12:15:54,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-21 12:15:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:54,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,127 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:55,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:55,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:15:55,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:55,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:55,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:55,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:55,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:55,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:55,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:55,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:55,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:55,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:55,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:55,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:15:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:55,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:55,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:15:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:15:55,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:15:55,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:55,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:15:55,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:55,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:55,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:15:55,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:15:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:55,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:55,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:55,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:15:55,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:55,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:55,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:55,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:55,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-21 12:15:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-21 12:15:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:55,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:55,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 12:15:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:55,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:55,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:55,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:55,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:55,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:55,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:55,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:55,355 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 12:15:55,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201165525] [2020-09-21 12:15:55,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:55,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:15:55,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668333093] [2020-09-21 12:15:55,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:15:55,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:55,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:15:55,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:15:55,358 INFO L87 Difference]: Start difference. First operand 519 states and 617 transitions. Second operand 8 states. [2020-09-21 12:15:56,220 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:56,536 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:56,834 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:57,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:57,825 INFO L93 Difference]: Finished difference Result 932 states and 1149 transitions. [2020-09-21 12:15:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:15:57,834 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-09-21 12:15:57,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:57,837 INFO L225 Difference]: With dead ends: 932 [2020-09-21 12:15:57,837 INFO L226 Difference]: Without dead ends: 547 [2020-09-21 12:15:57,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:15:57,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-09-21 12:15:57,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 511. [2020-09-21 12:15:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-09-21 12:15:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 606 transitions. [2020-09-21 12:15:57,956 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 606 transitions. Word has length 77 [2020-09-21 12:15:57,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:57,957 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 606 transitions. [2020-09-21 12:15:57,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:15:57,957 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 606 transitions. [2020-09-21 12:15:57,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-21 12:15:57,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:57,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:57,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:15:57,961 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:57,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash 2120025886, now seen corresponding path program 1 times [2020-09-21 12:15:57,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:57,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023675888] [2020-09-21 12:15:57,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:58,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-21 12:15:59,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:15:59,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:15:59,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:59,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-21 12:15:59,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:59,276 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:59,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:59,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-21 12:15:59,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:59,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:59,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:59,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:59,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:59,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:59,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:59,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:59,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:59,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:59,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:59,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:59,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:59,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:59,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:59,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:59,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:59,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:59,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:59,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:59,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:15:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:59,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:59,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:59,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:59,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:59,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:15:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-21 12:15:59,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-21 12:15:59,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:15:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-21 12:15:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:15:59,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:59,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:59,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:59,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:59,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:59,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:59,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:59,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:59,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 12:15:59,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:15:59,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:15:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:15:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:15:59,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:15:59,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:15:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:59,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:59,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:59,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:15:59,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:59,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:59,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:59,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 12:15:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:59,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:59,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:59,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:59,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:59,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:59,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-21 12:15:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:59,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:59,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:59,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:59,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:59,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:59,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:59,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:59,847 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 12:15:59,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023675888] [2020-09-21 12:15:59,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:59,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 12:15:59,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676693418] [2020-09-21 12:15:59,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 12:15:59,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:59,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 12:15:59,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:15:59,850 INFO L87 Difference]: Start difference. First operand 511 states and 606 transitions. Second operand 12 states. [2020-09-21 12:16:00,513 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:16:01,200 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:16:02,071 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:16:02,380 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:16:02,702 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:16:03,015 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:16:03,360 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:16:03,682 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:16:03,994 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:16:04,326 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:16:04,716 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:16:05,106 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 189