/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration 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_spec2_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:06:24,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:06:24,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:06:24,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:06:24,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:06:24,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:06:24,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:06:24,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:06:24,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:06:24,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:06:24,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:06:24,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:06:24,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:06:24,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:06:24,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:06:24,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:06:24,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:06:24,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:06:24,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:06:24,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:06:24,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:06:24,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:06:24,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:06:24,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:06:24,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:06:24,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:06:24,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:06:24,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:06:24,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:06:24,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:06:24,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:06:24,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:06:24,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:06:24,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:06:24,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:06:24,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:06:24,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:06:24,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:06:24,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:06:24,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:06:24,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:06:24,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:06:24,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:06:24,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:06:24,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:06:24,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:06:24,339 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:06:24,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:06:24,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:06:24,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:06:24,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:06:24,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:06:24,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:06:24,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:06:24,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:06:24,343 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:06:24,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:06:24,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:06:24,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:06:24,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:06:24,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:06:24,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:06:24,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:06:24,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:06:24,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:06:24,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:06:24,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:06:24,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:06:24,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:06:24,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:06:24,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:06:24,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> 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; [2020-09-24 19:06:24,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:06:24,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:06:24,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:06:24,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:06:24,857 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:06:24,858 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-09-24 19:06:24,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a3694271/f54cb344c5d84b638978703c020d2fbf/FLAG155a1c7b4 [2020-09-24 19:06:25,542 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:06:25,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-09-24 19:06:25,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a3694271/f54cb344c5d84b638978703c020d2fbf/FLAG155a1c7b4 [2020-09-24 19:06:25,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a3694271/f54cb344c5d84b638978703c020d2fbf [2020-09-24 19:06:25,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:06:25,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:06:25,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:06:25,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:06:25,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:06:25,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:06:25" (1/1) ... [2020-09-24 19:06:25,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a69fec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:06:25, skipping insertion in model container [2020-09-24 19:06:25,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:06:25" (1/1) ... [2020-09-24 19:06:25,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:06:25,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:06:26,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:06:26,333 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:06:26,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:06:26,584 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:06:26,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:06:26 WrapperNode [2020-09-24 19:06:26,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:06:26,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:06:26,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:06:26,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:06:26,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:06:26" (1/1) ... [2020-09-24 19:06:26,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:06:26" (1/1) ... [2020-09-24 19:06:26,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:06:26" (1/1) ... [2020-09-24 19:06:26,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:06:26" (1/1) ... [2020-09-24 19:06:26,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:06:26" (1/1) ... [2020-09-24 19:06:26,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:06:26" (1/1) ... [2020-09-24 19:06:26,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:06:26" (1/1) ... [2020-09-24 19:06:26,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:06:26,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:06:26,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:06:26,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:06:26,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:06:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:06:26,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:06:26,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:06:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 19:06:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-24 19:06:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-24 19:06:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 19:06:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 19:06:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 19:06:26,820 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 19:06:26,821 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 19:06:26,821 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 19:06:26,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 19:06:26,821 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 19:06:26,821 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 19:06:26,822 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 19:06:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 19:06:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 19:06:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 19:06:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 19:06:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 19:06:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 19:06:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 19:06:26,825 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 19:06:26,825 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 19:06:26,825 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 19:06:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 19:06:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 19:06:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 19:06:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 19:06:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 19:06:26,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 19:06:26,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 19:06:26,827 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 19:06:26,827 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 19:06:26,827 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 19:06:26,827 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 19:06:26,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:06:26,828 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 19:06:26,828 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 19:06:26,828 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 19:06:26,828 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 19:06:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:06:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:06:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 19:06:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 19:06:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 19:06:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 19:06:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-24 19:06:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-24 19:06:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 19:06:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 19:06:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 19:06:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 19:06:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 19:06:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 19:06:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:06:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 19:06:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 19:06:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 19:06:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 19:06:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 19:06:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 19:06:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 19:06:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 19:06:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 19:06:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 19:06:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 19:06:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 19:06:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 19:06:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 19:06:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 19:06:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 19:06:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 19:06:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 19:06:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 19:06:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:06:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 19:06:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 19:06:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:06:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 19:06:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 19:06:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:06:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 19:06:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 19:06:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 19:06:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 19:06:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 19:06:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 19:06:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 19:06:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 19:06:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 19:06:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:06:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 19:06:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:06:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 19:06:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:06:27,996 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:06:27,997 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 19:06:28,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:06:28 BoogieIcfgContainer [2020-09-24 19:06:28,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:06:28,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:06:28,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:06:28,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:06:28,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:06:25" (1/3) ... [2020-09-24 19:06:28,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f27829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:06:28, skipping insertion in model container [2020-09-24 19:06:28,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:06:26" (2/3) ... [2020-09-24 19:06:28,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f27829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:06:28, skipping insertion in model container [2020-09-24 19:06:28,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:06:28" (3/3) ... [2020-09-24 19:06:28,024 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product40.cil.c [2020-09-24 19:06:28,038 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:06:28,054 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:06:28,081 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:06:28,125 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:06:28,125 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:06:28,125 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:06:28,126 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:06:28,126 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:06:28,126 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:06:28,127 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:06:28,127 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:06:28,166 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states. [2020-09-24 19:06:28,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 19:06:28,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:06:28,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:06:28,207 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:06:28,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:06:28,217 INFO L82 PathProgramCache]: Analyzing trace with hash -368362639, now seen corresponding path program 1 times [2020-09-24 19:06:28,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:06:28,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899754268] [2020-09-24 19:06:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:06:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:29,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:29,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:29,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 19:06:29,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:06:29,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-24 19:06:29,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-09-24 19:06:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:29,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 19:06:30,077 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:06:30,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:06:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:30,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:30,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:30,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 19:06:30,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:30,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 19:06:30,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:30,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:30,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:30,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:06:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:30,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:30,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:30,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:30,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:30,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:30,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:30,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:30,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:30,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:30,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:30,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:06:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:30,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:30,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:30,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:30,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:30,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:06:30,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:30,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:30,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:30,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:30,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 19:06:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:30,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:30,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:30,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:30,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:30,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:06:30,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:30,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:06:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:30,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:30,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:30,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:30,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:30,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:06:30,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:30,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 19:06:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:30,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:30,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:30,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:06:30,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:30,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:30,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:30,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:30,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 19:06:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:30,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:30,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:30,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:30,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:30,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:30,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:30,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:30,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:06:30,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:30,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:30,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 19:06:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:30,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:30,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:30,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:30,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:30,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:06:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:30,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:06:30,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899754268] [2020-09-24 19:06:30,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:06:30,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:06:30,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435253419] [2020-09-24 19:06:30,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:06:30,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:06:30,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:06:30,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:06:30,481 INFO L87 Difference]: Start difference. First operand 320 states. Second operand 4 states. [2020-09-24 19:06:32,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:06:32,040 INFO L93 Difference]: Finished difference Result 505 states and 602 transitions. [2020-09-24 19:06:32,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:06:32,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-24 19:06:32,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:06:32,065 INFO L225 Difference]: With dead ends: 505 [2020-09-24 19:06:32,065 INFO L226 Difference]: Without dead ends: 321 [2020-09-24 19:06:32,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:06:32,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-09-24 19:06:32,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 269. [2020-09-24 19:06:32,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-09-24 19:06:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 294 transitions. [2020-09-24 19:06:32,221 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 294 transitions. Word has length 148 [2020-09-24 19:06:32,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:06:32,222 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 294 transitions. [2020-09-24 19:06:32,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:06:32,223 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 294 transitions. [2020-09-24 19:06:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 19:06:32,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:06:32,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:06:32,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:06:32,228 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:06:32,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:06:32,228 INFO L82 PathProgramCache]: Analyzing trace with hash 2053645548, now seen corresponding path program 1 times [2020-09-24 19:06:32,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:06:32,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262290144] [2020-09-24 19:06:32,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:06:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:33,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:33,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-24 19:06:33,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:06:33,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-24 19:06:33,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:33,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:06:33,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-09-24 19:06:33,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:06:33,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:33,642 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:06:33,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:06:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:33,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:33,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:33,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 19:06:33,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:33,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 19:06:33,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:33,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:33,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:33,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:06:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:33,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:33,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:33,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:33,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:33,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:06:33,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:33,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:33,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:06:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:33,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:33,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:33,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:33,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:33,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:33,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:33,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:33,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 19:06:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:33,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:33,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:33,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:33,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:33,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:06:33,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:33,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:33,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:33,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:33,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:06:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:33,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:33,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:33,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:33,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:33,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:33,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:33,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:33,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 19:06:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:33,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:33,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:33,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:06:33,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:33,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:33,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:33,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:33,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 19:06:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:33,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:33,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:33,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:33,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:33,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:06:33,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:06:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 19:06:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:33,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:33,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:33,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:33,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:33,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:33,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:33,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:33,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:06:33,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:33,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:06:33,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262290144] [2020-09-24 19:06:33,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:06:33,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:06:33,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221915897] [2020-09-24 19:06:34,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:06:34,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:06:34,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:06:34,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:06:34,003 INFO L87 Difference]: Start difference. First operand 269 states and 294 transitions. Second operand 5 states. [2020-09-24 19:06:35,010 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:06:36,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:06:36,187 INFO L93 Difference]: Finished difference Result 424 states and 485 transitions. [2020-09-24 19:06:36,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:06:36,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-24 19:06:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:06:36,217 INFO L225 Difference]: With dead ends: 424 [2020-09-24 19:06:36,218 INFO L226 Difference]: Without dead ends: 310 [2020-09-24 19:06:36,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:06:36,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-09-24 19:06:36,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 259. [2020-09-24 19:06:36,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-09-24 19:06:36,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 281 transitions. [2020-09-24 19:06:36,286 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 281 transitions. Word has length 149 [2020-09-24 19:06:36,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:06:36,287 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 281 transitions. [2020-09-24 19:06:36,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:06:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 281 transitions. [2020-09-24 19:06:36,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-24 19:06:36,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:06:36,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:06:36,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:06:36,294 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:06:36,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:06:36,296 INFO L82 PathProgramCache]: Analyzing trace with hash 487690811, now seen corresponding path program 1 times [2020-09-24 19:06:36,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:06:36,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523402801] [2020-09-24 19:06:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:06:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:36,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:36,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:37,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:37,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-24 19:06:37,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:06:37,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:06:37,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:06:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-24 19:06:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:06:37,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:37,756 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:06:37,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:06:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:37,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:37,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:37,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 19:06:37,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:37,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-24 19:06:37,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:37,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:37,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:06:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:37,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:37,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:37,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:37,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:37,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:37,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:37,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:37,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:37,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:37,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:06:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:37,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:37,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:37,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:37,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:37,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:06:37,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:37,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:37,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:37,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:37,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:37,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 19:06:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:37,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:37,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:37,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:37,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:37,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:06:37,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:37,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:37,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:37,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:37,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:37,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:06:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:37,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:37,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:37,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:37,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:37,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:06:37,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:37,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:37,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:37,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:37,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:38,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 19:06:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:38,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:38,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:38,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:06:38,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:38,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:38,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:38,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:38,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:38,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:38,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:38,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 19:06:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:38,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:38,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:38,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:06:38,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:38,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:06:38,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:38,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:06:38,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 19:06:38,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:06:38,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:06:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:38,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:38,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:38,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:38,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:38,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:38,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:06:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:38,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:38,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 19:06:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:38,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:38,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:38,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:38,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:38,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:38,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:38,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:38,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:06:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:38,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:06:38,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523402801] [2020-09-24 19:06:38,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:06:38,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:06:38,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316557577] [2020-09-24 19:06:38,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:06:38,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:06:38,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:06:38,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:06:38,152 INFO L87 Difference]: Start difference. First operand 259 states and 281 transitions. Second operand 6 states. [2020-09-24 19:06:38,635 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 19:06:40,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:06:40,735 INFO L93 Difference]: Finished difference Result 631 states and 743 transitions. [2020-09-24 19:06:40,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:06:40,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-09-24 19:06:40,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:06:40,745 INFO L225 Difference]: With dead ends: 631 [2020-09-24 19:06:40,745 INFO L226 Difference]: Without dead ends: 487 [2020-09-24 19:06:40,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:06:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2020-09-24 19:06:40,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 393. [2020-09-24 19:06:40,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-09-24 19:06:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 438 transitions. [2020-09-24 19:06:40,820 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 438 transitions. Word has length 162 [2020-09-24 19:06:40,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:06:40,821 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 438 transitions. [2020-09-24 19:06:40,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:06:40,821 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 438 transitions. [2020-09-24 19:06:40,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 19:06:40,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:06:40,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:06:40,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:06:40,825 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:06:40,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:06:40,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1631970358, now seen corresponding path program 1 times [2020-09-24 19:06:40,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:06:40,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335594569] [2020-09-24 19:06:40,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:06:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:40,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:41,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:41,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 19:06:41,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:41,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-09-24 19:06:41,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:06:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 19:06:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-24 19:06:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:42,401 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:06:42,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:06:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:42,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:42,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:42,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 19:06:42,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:42,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-24 19:06:42,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:42,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:06:42,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:42,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:06:42,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:42,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:06:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:42,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:42,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:42,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:42,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:42,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:06:42,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:06:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:06:42,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:42,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:06:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:42,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:42,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:42,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:42,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:42,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:06:42,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:06:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:42,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:06:42,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:42,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 19:06:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:42,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:42,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:42,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:42,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:42,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:06:42,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:42,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:06:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:06:42,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:42,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:06:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:42,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:42,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:42,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:42,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:42,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:06:42,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:06:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:06:42,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:42,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 19:06:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:42,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:42,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:42,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:06:42,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:42,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:06:42,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:06:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:06:42,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-24 19:06:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:42,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:42,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:42,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:06:42,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:42,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:06:42,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:06:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:42,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:06:42,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:42,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 19:06:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:42,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:42,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:42,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:42,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:42,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:06:42,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:06:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:06:42,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:42,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-24 19:06:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:42,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:42,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:42,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:42,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:42,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:42,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:42,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:06:42,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:42,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:06:43,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335594569] [2020-09-24 19:06:43,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:06:43,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 19:06:43,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278857149] [2020-09-24 19:06:43,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:06:43,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:06:43,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:06:43,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:06:43,044 INFO L87 Difference]: Start difference. First operand 393 states and 438 transitions. Second operand 10 states. [2020-09-24 19:06:43,622 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 19:06:45,000 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 19:06:45,350 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 19:06:45,853 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 19:06:46,198 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 19:06:46,501 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 19:06:46,912 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 19:06:47,231 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 19:06:47,880 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:06:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:06:49,367 INFO L93 Difference]: Finished difference Result 1078 states and 1312 transitions. [2020-09-24 19:06:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 19:06:49,368 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-09-24 19:06:49,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:06:49,375 INFO L225 Difference]: With dead ends: 1078 [2020-09-24 19:06:49,375 INFO L226 Difference]: Without dead ends: 800 [2020-09-24 19:06:49,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-09-24 19:06:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2020-09-24 19:06:49,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 638. [2020-09-24 19:06:49,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-09-24 19:06:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 723 transitions. [2020-09-24 19:06:49,484 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 723 transitions. Word has length 167 [2020-09-24 19:06:49,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:06:49,484 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 723 transitions. [2020-09-24 19:06:49,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 19:06:49,485 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 723 transitions. [2020-09-24 19:06:49,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 19:06:49,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:06:49,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:06:49,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:06:49,489 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:06:49,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:06:49,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1815547457, now seen corresponding path program 1 times [2020-09-24 19:06:49,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:06:49,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303079103] [2020-09-24 19:06:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:06:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:49,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:49,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:50,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:50,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:50,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-24 19:06:50,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:06:50,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:06:50,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:50,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:06:50,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-09-24 19:06:50,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:06:50,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:50,938 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:06:50,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:06:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:50,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:51,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:51,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 19:06:51,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:51,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 19:06:51,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:51,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:51,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:51,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:51,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:51,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:06:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:51,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:51,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:51,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:51,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:51,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:06:51,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:51,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:51,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:51,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:06:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:51,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:51,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:51,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:51,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:51,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:06:51,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:51,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:51,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:51,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:51,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:51,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 19:06:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:51,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:51,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:51,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:51,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:51,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:06:51,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:51,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:06:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:51,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:51,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:51,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:51,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:06:51,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:51,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 19:06:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:51,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:51,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:51,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:06:51,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:51,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:51,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:51,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:51,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 19:06:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:51,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:51,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:51,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:06:51,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:51,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:51,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-24 19:06:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:51,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:51,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:51,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:06:51,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:51,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:06:51,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:51,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:51,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:06:51,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 19:06:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:51,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:51,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:51,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:51,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:51,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:06:51,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:51,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:06:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:06:51,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:51,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 19:06:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:51,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:51,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:51,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:51,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:51,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:06:51,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:51,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:06:51,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:51,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:06:51,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:06:51,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303079103] [2020-09-24 19:06:51,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:06:51,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 19:06:51,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749586486] [2020-09-24 19:06:51,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 19:06:51,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:06:51,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 19:06:51,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:06:51,283 INFO L87 Difference]: Start difference. First operand 638 states and 723 transitions. Second operand 11 states. [2020-09-24 19:06:51,809 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 19:06:53,285 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 19:06:53,607 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 19:06:53,960 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 19:06:54,301 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 19:06:54,623 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 19:06:55,416 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 19:06:55,747 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 19:06:56,146 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:06:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:06:57,512 INFO L93 Difference]: Finished difference Result 1750 states and 2197 transitions. [2020-09-24 19:06:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 19:06:57,513 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2020-09-24 19:06:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:06:57,525 INFO L225 Difference]: With dead ends: 1750 [2020-09-24 19:06:57,525 INFO L226 Difference]: Without dead ends: 1227 [2020-09-24 19:06:57,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 19:06:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2020-09-24 19:06:57,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 960. [2020-09-24 19:06:57,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-09-24 19:06:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1099 transitions. [2020-09-24 19:06:57,745 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1099 transitions. Word has length 172 [2020-09-24 19:06:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:06:57,745 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 1099 transitions. [2020-09-24 19:06:57,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 19:06:57,746 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1099 transitions. [2020-09-24 19:06:57,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-24 19:06:57,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:06:57,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:06:57,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:06:57,752 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:06:57,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:06:57,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1961313266, now seen corresponding path program 1 times [2020-09-24 19:06:57,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:06:57,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837993866] [2020-09-24 19:06:57,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:06:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:57,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:58,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:58,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:58,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-24 19:06:58,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:06:58,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:06:58,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:58,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:06:58,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 197 [2020-09-24 19:06:58,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:06:58,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,081 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:06:59,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:06:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 19:06:59,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 19:06:59,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:06:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:59,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:06:59,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:59,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:59,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:59,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:06:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:59,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:06:59,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:59,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:59,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:59,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 19:06:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:59,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:06:59,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:59,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:59,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:06:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:06:59,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:06:59,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:59,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:59,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:59,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 19:06:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:06:59,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:06:59,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:59,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:59,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:59,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 19:06:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:06:59,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:06:59,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:59,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:59,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:59,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 19:06:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:06:59,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:59,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:59,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 19:06:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 19:06:59,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 19:06:59,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:06:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 19:06:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:06:59,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:06:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 19:06:59,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 19:06:59,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:06:59,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 19:06:59,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:06:59,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:06:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:06:59,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:06:59,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:06:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:59,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:06:59,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:06:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:06:59,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:06:59,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:06:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:59,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 19:06:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:06:59,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:06:59,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 19:06:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:59,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 19:06:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:59,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:06:59,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:06:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:59,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 19:06:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:06:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:06:59,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:06:59,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:06:59,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:06:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:06:59,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:06:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:06:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:06:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:06:59,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:06:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:06:59,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837993866] [2020-09-24 19:06:59,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:06:59,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 19:06:59,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776996416] [2020-09-24 19:06:59,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 19:06:59,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:06:59,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 19:06:59,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:06:59,655 INFO L87 Difference]: Start difference. First operand 960 states and 1099 transitions. Second operand 12 states. [2020-09-24 19:07:01,213 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:07:01,494 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 19:07:01,817 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 19:07:02,159 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:07:02,527 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 19:07:02,850 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:07:04,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:07:04,828 INFO L93 Difference]: Finished difference Result 2365 states and 2982 transitions. [2020-09-24 19:07:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 19:07:04,829 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 205 [2020-09-24 19:07:04,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:07:04,841 INFO L225 Difference]: With dead ends: 2365 [2020-09-24 19:07:04,841 INFO L226 Difference]: Without dead ends: 1520 [2020-09-24 19:07:04,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2020-09-24 19:07:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2020-09-24 19:07:04,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 998. [2020-09-24 19:07:04,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-09-24 19:07:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1139 transitions. [2020-09-24 19:07:04,994 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1139 transitions. Word has length 205 [2020-09-24 19:07:04,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:07:04,994 INFO L479 AbstractCegarLoop]: Abstraction has 998 states and 1139 transitions. [2020-09-24 19:07:04,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 19:07:04,995 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1139 transitions. [2020-09-24 19:07:04,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-24 19:07:04,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:07:04,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:07:04,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:07:04,999 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:07:04,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:07:04,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1836108882, now seen corresponding path program 1 times [2020-09-24 19:07:05,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:07:05,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253102740] [2020-09-24 19:07:05,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:07:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:05,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-24 19:07:06,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:07:06,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:07:06,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:07:06,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-09-24 19:07:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:07:06,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:06,312 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:07:06,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:07:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 19:07:06,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 19:07:06,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:06,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:07:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:07:06,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:07:06,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:06,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:07:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:07:06,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:07:06,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:06,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:06,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:06,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:06,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 19:07:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:07:06,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:07:06,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:06,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:06,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:07:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:07:06,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:07:06,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:06,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 19:07:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:07:06,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:07:06,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:06,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:06,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:06,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:06,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 19:07:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:07:06,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:07:06,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:06,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:06,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:06,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 19:07:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:07:06,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:07:06,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:06,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:06,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:06,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:06,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 19:07:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 19:07:06,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 19:07:06,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:07:06,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:07:06,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:07:06,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:06,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:07:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 19:07:06,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-24 19:07:06,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:07:06,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:07:06,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:07:06,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:06,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:07:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:07:06,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 19:07:06,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:07:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:07:06,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:07:06,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:06,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:07:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:07:06,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:07:06,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:07:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:07:06,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:06,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 19:07:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:07:06,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:07:06,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:06,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 19:07:06,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:06,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:06,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 19:07:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:07:06,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:07:06,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:07:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:06,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 19:07:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:06,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:06,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:06,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:07:06,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:06,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:07:06,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:06,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:06,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:07:06,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:06,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:07:07,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253102740] [2020-09-24 19:07:07,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:07:07,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 19:07:07,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904423940] [2020-09-24 19:07:07,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 19:07:07,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:07:07,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 19:07:07,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:07:07,054 INFO L87 Difference]: Start difference. First operand 998 states and 1139 transitions. Second operand 11 states. [2020-09-24 19:07:08,730 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:07:08,972 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 19:07:09,223 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 19:07:09,537 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 19:07:09,768 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 19:07:11,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:07:11,385 INFO L93 Difference]: Finished difference Result 2427 states and 3104 transitions. [2020-09-24 19:07:11,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 19:07:11,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 205 [2020-09-24 19:07:11,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:07:11,396 INFO L225 Difference]: With dead ends: 2427 [2020-09-24 19:07:11,396 INFO L226 Difference]: Without dead ends: 1544 [2020-09-24 19:07:11,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-09-24 19:07:11,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2020-09-24 19:07:11,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1022. [2020-09-24 19:07:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2020-09-24 19:07:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1163 transitions. [2020-09-24 19:07:11,555 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1163 transitions. Word has length 205 [2020-09-24 19:07:11,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:07:11,556 INFO L479 AbstractCegarLoop]: Abstraction has 1022 states and 1163 transitions. [2020-09-24 19:07:11,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 19:07:11,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1163 transitions. [2020-09-24 19:07:11,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-24 19:07:11,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:07:11,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:07:11,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:07:11,561 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:07:11,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:07:11,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1768364273, now seen corresponding path program 1 times [2020-09-24 19:07:11,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:07:11,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489011926] [2020-09-24 19:07:11,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:07:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:12,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:12,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:12,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-24 19:07:12,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:07:12,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1036 [2020-09-24 19:07:12,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:07:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 19:07:12,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 19:07:12,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:12,974 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:07:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:07:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:12,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 19:07:13,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 19:07:13,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:13,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:13,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:07:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:07:13,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:07:13,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:13,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:13,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:13,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:07:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:13,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:07:13,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:07:13,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:13,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:13,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:13,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 19:07:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:13,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:07:13,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:07:13,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:13,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:13,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:07:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:13,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:07:13,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:07:13,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:13,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:13,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:13,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 19:07:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:13,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:07:13,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:07:13,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:07:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 19:07:13,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:13,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 19:07:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:13,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:07:13,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:07:13,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:07:13,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:07:13,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:13,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 19:07:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:13,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:07:13,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:07:13,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:07:13,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:07:13,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:13,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 19:07:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:13,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 19:07:13,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:07:13,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:07:13,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 19:07:13,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:13,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:07:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:13,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 19:07:13,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:07:13,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:13,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:13,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:13,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:07:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:13,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:07:13,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:07:13,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:13,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:13,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:07:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:07:13,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:07:13,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:13,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:13,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 19:07:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:13,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:07:13,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:07:13,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:07:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:07:13,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:13,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 19:07:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:13,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:07:13,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:07:13,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:07:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:07:13,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:07:13,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 19:07:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:07:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:07:13,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:07:13,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:07:13,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:07:13,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:07:13,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:07:13,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:07:13,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:07:13,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:07:13,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:07:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:07:13,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489011926] [2020-09-24 19:07:13,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:07:13,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:07:13,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623177081] [2020-09-24 19:07:13,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:07:13,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:07:13,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:07:13,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:07:13,418 INFO L87 Difference]: Start difference. First operand 1022 states and 1163 transitions. Second operand 8 states. [2020-09-24 19:07:14,019 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190