/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:07:23,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:07:23,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:07:23,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:07:23,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:07:23,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:07:23,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:07:23,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:07:23,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:07:23,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:07:23,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:07:23,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:07:23,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:07:23,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:07:23,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:07:23,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:07:23,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:07:23,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:07:23,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:07:23,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:07:23,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:07:23,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:07:23,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:07:23,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:07:23,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:07:23,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:07:23,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:07:23,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:07:23,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:07:23,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:07:23,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:07:23,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:07:23,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:07:23,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:07:23,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:07:23,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:07:23,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:07:23,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:07:23,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:07:23,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:07:23,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:07:23,828 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:07:23,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:07:23,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:07:23,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:07:23,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:07:23,882 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:07:23,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:07:23,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:07:23,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:07:23,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:07:23,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:07:23,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:07:23,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:07:23,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:07:23,885 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:07:23,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:07:23,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:07:23,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:07:23,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:07:23,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:07:23,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:07:23,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:07:23,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:07:23,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:07:23,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:07:23,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:07:23,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:07:23,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:07:23,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:07:23,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:07:23,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:07:24,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:07:24,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:07:24,377 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:07:24,379 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:07:24,380 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:07:24,382 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-09-21 12:07:24,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8281fdea3/d11eaf8e2c8742a1b27c647a1c257855/FLAG47ecd95cf [2020-09-21 12:07:25,152 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:07:25,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-09-21 12:07:25,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8281fdea3/d11eaf8e2c8742a1b27c647a1c257855/FLAG47ecd95cf [2020-09-21 12:07:25,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8281fdea3/d11eaf8e2c8742a1b27c647a1c257855 [2020-09-21 12:07:25,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:07:25,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:07:25,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:07:25,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:07:25,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:07:25,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:07:25" (1/1) ... [2020-09-21 12:07:25,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14924135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:25, skipping insertion in model container [2020-09-21 12:07:25,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:07:25" (1/1) ... [2020-09-21 12:07:25,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:07:25,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:07:25,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:07:25,977 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:07:26,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:07:26,118 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:07:26,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:26 WrapperNode [2020-09-21 12:07:26,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:07:26,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:07:26,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:07:26,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:07:26,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:26" (1/1) ... [2020-09-21 12:07:26,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:26" (1/1) ... [2020-09-21 12:07:26,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:26" (1/1) ... [2020-09-21 12:07:26,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:26" (1/1) ... [2020-09-21 12:07:26,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:26" (1/1) ... [2020-09-21 12:07:26,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:26" (1/1) ... [2020-09-21 12:07:26,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:26" (1/1) ... [2020-09-21 12:07:26,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:07:26,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:07:26,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:07:26,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:07:26,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:26" (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 [2020-09-21 12:07:26,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:07:26,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:07:26,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:07:26,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 12:07:26,357 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:07:26,357 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:07:26,358 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:07:26,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:07:26,358 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:07:26,358 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:07:26,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:07:26,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 12:07:26,359 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:07:26,359 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:07:26,359 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:07:26,359 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:07:26,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:07:26,360 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:07:26,360 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:07:26,360 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:07:26,361 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:07:26,361 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:07:26,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:07:26,361 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:07:26,361 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:07:26,361 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:07:26,362 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:07:26,362 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:07:26,362 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:07:26,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:07:26,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:07:26,362 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:07:26,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:07:26,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 12:07:26,363 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 12:07:26,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:07:26,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:07:26,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:07:26,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:07:26,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:07:26,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:07:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:07:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:07:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:07:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:07:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:07:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:07:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 12:07:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:07:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:07:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:07:26,366 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:07:26,366 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:07:26,366 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:07:26,366 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 12:07:26,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:07:26,367 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:07:26,367 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:07:26,367 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:07:26,367 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:07:26,367 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:07:26,367 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:07:26,367 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:07:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:07:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:07:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:07:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:07:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:07:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 12:07:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:07:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:07:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:07:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:07:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:07:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:07:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 12:07:26,370 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:07:26,370 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:07:26,370 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:07:26,370 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:07:26,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:07:26,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:07:26,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:07:26,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:07:26,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:07:26,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:07:26,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:07:26,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:07:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:07:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:07:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:07:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:07:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:07:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:07:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:07:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:07:27,428 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:07:27,428 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:07:27,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:07:27 BoogieIcfgContainer [2020-09-21 12:07:27,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:07:27,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:07:27,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:07:27,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:07:27,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:07:25" (1/3) ... [2020-09-21 12:07:27,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624dcab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:07:27, skipping insertion in model container [2020-09-21 12:07:27,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:07:26" (2/3) ... [2020-09-21 12:07:27,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624dcab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:07:27, skipping insertion in model container [2020-09-21 12:07:27,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:07:27" (3/3) ... [2020-09-21 12:07:27,444 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2020-09-21 12:07:27,457 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:07:27,468 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:07:27,491 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:07:27,524 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:07:27,524 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:07:27,524 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:07:27,524 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:07:27,524 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:07:27,524 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:07:27,525 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:07:27,525 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:07:27,552 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-09-21 12:07:27,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:07:27,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:27,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:27,566 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:27,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:27,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1040081704, now seen corresponding path program 1 times [2020-09-21 12:07:27,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:27,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519321611] [2020-09-21 12:07:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:28,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:28,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:28,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:07:28,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:28,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1063 [2020-09-21 12:07:28,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:28,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:28,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:07:28,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:28,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:07:29,329 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:29,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:29,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:29,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:29,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-21 12:07:29,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:29,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:29,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:29,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:29,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:29,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:29,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:29,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:29,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:29,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:29,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:29,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:29,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:29,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:29,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:29,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:29,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:29,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:29,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:29,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:29,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:29,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:29,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:29,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:29,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:29,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:29,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:29,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:29,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:29,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:29,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:07:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:29,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:29,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:29,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:07:29,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:29,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:29,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:07:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:29,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:29,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:29,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:29,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:29,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:29,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519321611] [2020-09-21 12:07:29,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:29,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:07:29,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055119879] [2020-09-21 12:07:29,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:07:29,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:29,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:07:29,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:07:29,583 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-09-21 12:07:30,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:30,769 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-09-21 12:07:30,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:07:30,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:07:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:30,791 INFO L225 Difference]: With dead ends: 306 [2020-09-21 12:07:30,791 INFO L226 Difference]: Without dead ends: 165 [2020-09-21 12:07:30,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:07:30,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-21 12:07:30,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-09-21 12:07:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-21 12:07:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-09-21 12:07:30,902 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-09-21 12:07:30,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:30,903 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-09-21 12:07:30,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:07:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-09-21 12:07:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:07:30,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:30,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:30,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:07:30,909 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:30,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:30,909 INFO L82 PathProgramCache]: Analyzing trace with hash -849158610, now seen corresponding path program 1 times [2020-09-21 12:07:30,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:30,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637222787] [2020-09-21 12:07:30,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:31,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:31,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:32,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:32,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:07:32,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:32,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1440 [2020-09-21 12:07:32,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:32,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:32,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:07:32,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:07:32,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:32,694 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:32,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:32,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:32,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:32,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:32,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:32,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 12:07:32,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:32,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:32,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:32,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:32,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:32,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:32,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:32,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:32,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:32,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:32,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:32,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:32,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:32,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:32,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:32,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:32,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:32,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:32,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:32,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:32,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:32,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:32,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:32,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:32,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:32,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:32,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:32,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:32,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:32,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:32,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:32,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:32,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:32,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:32,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:32,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:32,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:32,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:32,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:32,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:32,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:07:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:32,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:32,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:32,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:32,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:32,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:32,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:32,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:32,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:32,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:32,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:32,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:07:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:32,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:32,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:32,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:32,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:32,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:32,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:32,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:32,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:32,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:32,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:32,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637222787] [2020-09-21 12:07:32,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:32,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:07:32,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422373789] [2020-09-21 12:07:32,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:07:32,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:32,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:07:32,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:07:32,863 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-09-21 12:07:33,490 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:34,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:34,609 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-09-21 12:07:34,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:07:34,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:07:34,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:34,613 INFO L225 Difference]: With dead ends: 235 [2020-09-21 12:07:34,614 INFO L226 Difference]: Without dead ends: 149 [2020-09-21 12:07:34,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:07:34,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-21 12:07:34,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-09-21 12:07:34,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-21 12:07:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-09-21 12:07:34,698 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-09-21 12:07:34,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:34,699 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-09-21 12:07:34,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:07:34,699 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-09-21 12:07:34,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:07:34,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:34,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:34,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:07:34,713 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:34,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:34,713 INFO L82 PathProgramCache]: Analyzing trace with hash 846018297, now seen corresponding path program 1 times [2020-09-21 12:07:34,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:34,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589534987] [2020-09-21 12:07:34,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:35,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:35,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:07:35,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:35,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1046 [2020-09-21 12:07:35,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:07:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:07:35,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:36,088 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:36,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:36,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:36,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:36,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:36,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:36,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-21 12:07:36,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:36,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:36,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:36,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:36,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:36,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:36,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:36,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:36,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:36,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:36,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:36,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:36,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:36,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:36,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:36,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:36,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:36,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:36,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:36,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:36,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:36,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:36,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:36,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:36,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:36,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:36,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:36,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:36,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:36,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:36,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:36,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:07:36,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:36,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:36,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:36,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:36,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:36,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:36,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:36,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:36,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:07:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:36,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:36,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:36,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:36,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:36,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:36,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:36,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:36,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:07:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:36,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:36,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:36,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:36,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:36,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:36,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:36,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:36,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:36,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:36,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:36,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589534987] [2020-09-21 12:07:36,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:36,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:07:36,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993408945] [2020-09-21 12:07:36,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:07:36,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:36,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:07:36,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:07:36,356 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 4 states. [2020-09-21 12:07:36,681 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:37,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:37,568 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-09-21 12:07:37,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:07:37,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-21 12:07:37,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:37,572 INFO L225 Difference]: With dead ends: 248 [2020-09-21 12:07:37,572 INFO L226 Difference]: Without dead ends: 149 [2020-09-21 12:07:37,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:07:37,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-21 12:07:37,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-09-21 12:07:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-21 12:07:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-09-21 12:07:37,611 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-09-21 12:07:37,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:37,612 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-09-21 12:07:37,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:07:37,612 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-09-21 12:07:37,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 12:07:37,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:37,614 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] [2020-09-21 12:07:37,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:07:37,614 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:37,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:37,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1478840967, now seen corresponding path program 1 times [2020-09-21 12:07:37,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:37,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430514726] [2020-09-21 12:07:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:37,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:38,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:38,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-21 12:07:38,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:38,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1262 [2020-09-21 12:07:38,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:38,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:38,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-21 12:07:38,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:38,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,198 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:39,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:39,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-21 12:07:39,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:39,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:39,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:39,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:39,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:39,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:39,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:39,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:39,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:39,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:07:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:07:39,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:07:39,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:07:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:07:39,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:39,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:07:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:07:39,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:39,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:39,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:39,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 12:07:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:39,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:39,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-21 12:07:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:39,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:39,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:39,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:39,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:39,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:39,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:39,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430514726] [2020-09-21 12:07:39,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:39,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:07:39,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356970360] [2020-09-21 12:07:39,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:07:39,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:39,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:07:39,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:07:39,408 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-09-21 12:07:39,825 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:41,157 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:42,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:42,030 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-09-21 12:07:42,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:07:42,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-09-21 12:07:42,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:42,034 INFO L225 Difference]: With dead ends: 345 [2020-09-21 12:07:42,034 INFO L226 Difference]: Without dead ends: 246 [2020-09-21 12:07:42,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:07:42,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-21 12:07:42,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-09-21 12:07:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-21 12:07:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-09-21 12:07:42,088 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-09-21 12:07:42,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:42,088 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-09-21 12:07:42,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:07:42,088 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-09-21 12:07:42,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 12:07:42,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:42,090 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] [2020-09-21 12:07:42,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:07:42,090 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:42,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:42,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1284194314, now seen corresponding path program 1 times [2020-09-21 12:07:42,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:42,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074242016] [2020-09-21 12:07:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:42,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 12:07:43,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:43,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1475 [2020-09-21 12:07:43,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:07:43,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:43,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-21 12:07:43,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:43,934 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:43,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-21 12:07:44,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:44,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:44,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:44,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:44,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:44,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:44,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:44,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:44,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:44,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:44,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:44,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:07:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:07:44,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:07:44,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-21 12:07:44,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:07:44,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:07:44,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:44,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:07:44,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:44,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:44,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:44,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:44,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 12:07:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:07:44,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:44,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:44,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:07:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:44,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:44,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:44,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074242016] [2020-09-21 12:07:44,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:44,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:07:44,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761963490] [2020-09-21 12:07:44,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:07:44,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:44,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:07:44,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:07:44,405 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 8 states. [2020-09-21 12:07:44,848 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:46,436 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-21 12:07:46,764 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:47,067 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:07:47,362 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:47,737 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:49,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:49,024 INFO L93 Difference]: Finished difference Result 607 states and 746 transitions. [2020-09-21 12:07:49,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:07:49,026 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-09-21 12:07:49,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:49,031 INFO L225 Difference]: With dead ends: 607 [2020-09-21 12:07:49,031 INFO L226 Difference]: Without dead ends: 428 [2020-09-21 12:07:49,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:07:49,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-09-21 12:07:49,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 361. [2020-09-21 12:07:49,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-09-21 12:07:49,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 410 transitions. [2020-09-21 12:07:49,122 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 410 transitions. Word has length 79 [2020-09-21 12:07:49,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:49,123 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 410 transitions. [2020-09-21 12:07:49,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:07:49,123 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 410 transitions. [2020-09-21 12:07:49,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-21 12:07:49,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:49,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:49,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:07:49,125 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:49,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:49,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1377771002, now seen corresponding path program 1 times [2020-09-21 12:07:49,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:49,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266278256] [2020-09-21 12:07:49,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:49,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:49,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:50,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-21 12:07:50,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:07:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-21 12:07:50,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-21 12:07:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-21 12:07:50,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:50,519 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:50,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:50,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:50,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:50,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:50,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 12:07:50,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:50,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:50,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:50,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:50,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:50,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:50,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:50,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:50,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:50,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:50,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:50,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:50,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:50,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:50,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:50,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:50,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:50,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:50,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:50,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:50,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:50,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:50,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:50,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:50,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:50,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:50,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:50,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:50,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:50,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:50,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:50,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:50,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:50,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:50,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:50,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:50,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:50,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:50,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:50,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:50,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:50,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:07:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:50,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:50,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:50,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:50,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:50,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:50,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:50,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:50,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:50,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:50,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:07:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:50,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:50,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:07:50,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:50,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-21 12:07:50,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:07:50,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:50,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:50,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:50,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:07:50,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:50,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:07:50,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:50,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:07:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:50,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:50,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:50,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:50,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:07:50,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:07:50,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:50,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:50,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:50,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:50,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:50,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:50,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:50,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:50,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:50,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:50,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:50,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:50,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:50,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 12:07:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:50,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:50,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:50,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:50,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:50,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:50,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:50,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:50,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 12:07:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:50,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:50,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:50,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:50,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:50,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:50,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:50,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266278256] [2020-09-21 12:07:50,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:50,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:07:50,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394666802] [2020-09-21 12:07:50,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:07:50,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:50,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:07:50,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:07:50,883 INFO L87 Difference]: Start difference. First operand 361 states and 410 transitions. Second operand 9 states. [2020-09-21 12:07:51,355 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:52,627 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:07:52,933 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:53,312 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:53,652 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:07:53,969 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:55,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:55,271 INFO L93 Difference]: Finished difference Result 470 states and 590 transitions. [2020-09-21 12:07:55,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:07:55,271 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-09-21 12:07:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:55,278 INFO L225 Difference]: With dead ends: 470 [2020-09-21 12:07:55,278 INFO L226 Difference]: Without dead ends: 467 [2020-09-21 12:07:55,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:07:55,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-09-21 12:07:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 361. [2020-09-21 12:07:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-09-21 12:07:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 409 transitions. [2020-09-21 12:07:55,357 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 409 transitions. Word has length 83 [2020-09-21 12:07:55,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:55,358 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 409 transitions. [2020-09-21 12:07:55,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:07:55,358 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 409 transitions. [2020-09-21 12:07:55,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 12:07:55,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:55,360 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] [2020-09-21 12:07:55,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:07:55,360 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:55,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:55,360 INFO L82 PathProgramCache]: Analyzing trace with hash 453090503, now seen corresponding path program 1 times [2020-09-21 12:07:55,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:55,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280688884] [2020-09-21 12:07:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-21 12:07:56,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-09-21 12:07:56,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:56,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-21 12:07:56,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:56,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,307 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:56,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:56,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-21 12:07:56,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:56,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:56,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:56,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:56,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:56,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:56,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:56,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:56,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:07:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:56,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:56,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:07:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:07:56,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-21 12:07:56,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:56,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:07:56,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:56,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:07:56,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:07:56,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:07:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:56,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:56,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:07:56,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:07:56,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:56,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:56,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:56,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:56,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 12:07:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:56,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:56,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:56,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 12:07:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:56,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:56,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:56,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:56,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:56,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:56,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:56,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:56,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280688884] [2020-09-21 12:07:56,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:56,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:07:56,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847419895] [2020-09-21 12:07:56,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:07:56,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:56,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:07:56,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:07:56,733 INFO L87 Difference]: Start difference. First operand 361 states and 409 transitions. Second operand 9 states. [2020-09-21 12:07:57,911 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:58,230 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:07:58,569 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:58,929 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:08:00,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:08:00,192 INFO L93 Difference]: Finished difference Result 808 states and 990 transitions. [2020-09-21 12:08:00,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:08:00,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-09-21 12:08:00,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:08:00,197 INFO L225 Difference]: With dead ends: 808 [2020-09-21 12:08:00,198 INFO L226 Difference]: Without dead ends: 471 [2020-09-21 12:08:00,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:08:00,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-21 12:08:00,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 371. [2020-09-21 12:08:00,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-09-21 12:08:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 419 transitions. [2020-09-21 12:08:00,268 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 419 transitions. Word has length 84 [2020-09-21 12:08:00,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:08:00,269 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 419 transitions. [2020-09-21 12:08:00,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:08:00,269 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 419 transitions. [2020-09-21 12:08:00,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 12:08:00,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:08:00,271 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] [2020-09-21 12:08:00,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:08:00,271 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:08:00,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:08:00,272 INFO L82 PathProgramCache]: Analyzing trace with hash 475722757, now seen corresponding path program 1 times [2020-09-21 12:08:00,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:08:00,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308243165] [2020-09-21 12:08:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:08:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:00,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:00,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:00,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-21 12:08:00,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:00,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-09-21 12:08:00,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-21 12:08:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:00,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,091 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:08:01,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:08:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:01,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 12:08:01,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:01,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:01,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:01,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:08:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:01,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:01,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:01,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:08:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:01,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:01,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:01,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:01,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:01,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:08:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:01,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:08:01,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:01,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:01,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:08:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:01,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:01,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:01,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:08:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:01,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:08:01,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:01,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:01,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:01,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:08:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:08:01,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-21 12:08:01,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:08:01,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:01,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:08:01,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 12:08:01,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:01,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:08:01,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:01,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:01,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:08:01,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:08:01,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:08:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:08:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:08:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:08:01,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:08:01,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:08:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:01,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:08:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:01,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:01,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:01,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 12:08:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:01,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:01,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:01,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 12:08:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:01,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:01,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:01,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:01,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:01,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:01,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:01,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:01,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:08:01,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308243165] [2020-09-21 12:08:01,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:08:01,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:08:01,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690676436] [2020-09-21 12:08:01,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:08:01,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:08:01,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:08:01,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:08:01,514 INFO L87 Difference]: Start difference. First operand 371 states and 419 transitions. Second operand 8 states. [2020-09-21 12:08:02,493 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:02,810 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:03,121 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:08:04,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:08:04,392 INFO L93 Difference]: Finished difference Result 832 states and 1030 transitions. [2020-09-21 12:08:04,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:08:04,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-09-21 12:08:04,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:08:04,400 INFO L225 Difference]: With dead ends: 832 [2020-09-21 12:08:04,400 INFO L226 Difference]: Without dead ends: 485 [2020-09-21 12:08:04,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:08:04,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-09-21 12:08:04,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 379. [2020-09-21 12:08:04,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-09-21 12:08:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 427 transitions. [2020-09-21 12:08:04,525 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 427 transitions. Word has length 84 [2020-09-21 12:08:04,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:08:04,526 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 427 transitions. [2020-09-21 12:08:04,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:08:04,526 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 427 transitions. [2020-09-21 12:08:04,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 12:08:04,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:08:04,527 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] [2020-09-21 12:08:04,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:08:04,528 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:08:04,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:08:04,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1501214756, now seen corresponding path program 1 times [2020-09-21 12:08:04,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:08:04,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998965371] [2020-09-21 12:08:04,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:08:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:04,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:05,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:05,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-21 12:08:05,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:05,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-21 12:08:05,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:08:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 12:08:05,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:08:05,868 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:08:05,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:08:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:05,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:06,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-21 12:08:06,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:08:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:08:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:06,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:06,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:08:06,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:08:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:06,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:08:06,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:08:06,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:08:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:06,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:08:06,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:06,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:08:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:08:06,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:08:06,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:08:06,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:08:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:06,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:08:06,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:06,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:08:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:08:06,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 12:08:06,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:08:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:08:06,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:08:06,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:08:06,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:08:06,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:08:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:08:06,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:08:06,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:08:06,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:08:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:08:06,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:08:06,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:08:06,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:08:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:06,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:08:06,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:08:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:08:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:08:06,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 12:08:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:06,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:08:06,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:06,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 12:08:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:08:06,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:08:06,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:08:06,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:08:06,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:08:06,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:08:06,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:08:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:08:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:08:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:08:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:08:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:08:06,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998965371] [2020-09-21 12:08:06,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:08:06,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:08:06,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345150084] [2020-09-21 12:08:06,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:08:06,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:08:06,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:08:06,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:08:06,263 INFO L87 Difference]: Start difference. First operand 379 states and 427 transitions. Second operand 7 states. [2020-09-21 12:08:06,655 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:08:07,294 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:08:09,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:08:09,471 INFO L93 Difference]: Finished difference Result 1174 states and 1504 transitions. [2020-09-21 12:08:09,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 12:08:09,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-09-21 12:08:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:08:09,476 INFO L225 Difference]: With dead ends: 1174 [2020-09-21 12:08:09,477 INFO L226 Difference]: Without dead ends: 819 [2020-09-21 12:08:09,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:08:09,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-09-21 12:08:09,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 699. [2020-09-21 12:08:09,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-21 12:08:09,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 821 transitions. [2020-09-21 12:08:09,666 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 821 transitions. Word has length 84 [2020-09-21 12:08:09,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:08:09,666 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 821 transitions. [2020-09-21 12:08:09,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:08:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 821 transitions. [2020-09-21 12:08:09,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 12:08:09,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:08:09,668 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] [2020-09-21 12:08:09,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:08:09,669 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:08:09,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:08:09,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1300385726, now seen corresponding path program 1 times [2020-09-21 12:08:09,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:08:09,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162358247] [2020-09-21 12:08:09,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:08:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:08:09,738 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:08:09,738 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:08:09,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:08:09,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:08:09 BoogieIcfgContainer [2020-09-21 12:08:09,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:08:09,797 INFO L168 Benchmark]: Toolchain (without parser) took 44414.64 ms. Allocated memory was 141.0 MB in the beginning and 718.8 MB in the end (delta: 577.8 MB). Free memory was 102.3 MB in the beginning and 243.5 MB in the end (delta: -141.2 MB). Peak memory consumption was 436.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:09,803 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:08:09,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.14 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 101.7 MB in the beginning and 172.4 MB in the end (delta: -70.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:09,813 INFO L168 Benchmark]: Boogie Preprocessor took 134.14 ms. Allocated memory is still 205.0 MB. Free memory was 172.4 MB in the beginning and 167.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:09,814 INFO L168 Benchmark]: RCFGBuilder took 1180.94 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 167.8 MB in the beginning and 193.4 MB in the end (delta: -25.6 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:09,817 INFO L168 Benchmark]: TraceAbstraction took 42359.00 ms. Allocated memory was 236.5 MB in the beginning and 718.8 MB in the end (delta: 482.3 MB). Free memory was 193.4 MB in the beginning and 243.5 MB in the end (delta: -50.1 MB). Peak memory consumption was 432.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:08:09,825 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.14 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 101.7 MB in the beginning and 172.4 MB in the end (delta: -70.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.14 ms. Allocated memory is still 205.0 MB. Free memory was 172.4 MB in the beginning and 167.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1180.94 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 167.8 MB in the beginning and 193.4 MB in the end (delta: -25.6 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42359.00 ms. Allocated memory was 236.5 MB in the beginning and 718.8 MB in the end (delta: 482.3 MB). Free memory was 193.4 MB in the beginning and 243.5 MB in the end (delta: -50.1 MB). Peak memory consumption was 432.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 388]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L76] int waterLevel = 1; [L77] int methaneLevelCritical = 0; [L179] int cleanupTimeShifts = 4; [L395] int pumpRunning = 0; [L396] int systemActive = 1; [L769] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L258] int retValue_acc ; [L259] int tmp ; [L263] FCALL select_helpers() [L264] FCALL select_features() [L265] CALL, EXPR valid_product() [L307] int retValue_acc ; [L310] retValue_acc = 1 [L311] return (retValue_acc); [L265] RET, EXPR valid_product() [L265] tmp = valid_product() [L267] COND TRUE \read(tmp) [L269] FCALL setup() [L270] CALL runTest() [L249] CALL test() [L318] int splverifierCounter ; [L319] int tmp ; [L320] int tmp___0 ; [L321] int tmp___1 ; [L322] int tmp___2 ; [L325] splverifierCounter = 0 [L327] COND TRUE 1 [L329] COND TRUE splverifierCounter < 4 [L335] tmp = __VERIFIER_nondet_int() [L337] COND TRUE \read(tmp) [L339] CALL waterRise() [L94] COND TRUE waterLevel < 2 [L95] waterLevel = waterLevel + 1 [L339] RET waterRise() [L345] tmp___0 = __VERIFIER_nondet_int() [L347] COND TRUE \read(tmp___0) [L349] CALL changeMethaneLevel() [L106] COND FALSE !(\read(methaneLevelCritical)) [L109] methaneLevelCritical = 1 [L349] RET changeMethaneLevel() [L355] tmp___2 = __VERIFIER_nondet_int() [L357] COND FALSE !(\read(tmp___2)) [L363] tmp___1 = __VERIFIER_nondet_int() [L365] COND TRUE \read(tmp___1) [L372] CALL timeShift() [L402] COND FALSE !(\read(pumpRunning)) [L409] COND TRUE \read(systemActive) [L411] CALL processEnvironment() [L457] int tmp ; [L460] COND FALSE !(\read(pumpRunning)) [L475] CALL processEnvironment__wrappee__highWaterSensor() [L431] int tmp ; [L434] COND TRUE ! pumpRunning [L436] CALL, EXPR isHighWaterLevel() [L554] int retValue_acc ; [L555] int tmp ; [L556] int tmp___0 ; [L560] CALL, EXPR isHighWaterSensorDry() [L156] int retValue_acc ; [L159] COND FALSE !(waterLevel < 2) [L163] retValue_acc = 0 [L164] return (retValue_acc); [L560] RET, EXPR isHighWaterSensorDry() [L560] tmp = isHighWaterSensorDry() [L562] COND FALSE !(\read(tmp)) [L565] tmp___0 = 1 [L567] retValue_acc = tmp___0 [L568] return (retValue_acc); [L436] RET, EXPR isHighWaterLevel() [L436] tmp = isHighWaterLevel() [L438] COND TRUE \read(tmp) [L440] CALL activatePump() [L485] pumpRunning = 1 [L440] RET activatePump() [L475] RET processEnvironment__wrappee__highWaterSensor() [L411] RET processEnvironment() [L417] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L115] int retValue_acc ; [L118] retValue_acc = methaneLevelCritical [L119] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L509] int retValue_acc ; [L512] retValue_acc = pumpRunning [L513] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L388] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 25.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1088 SDtfs, 2083 SDslu, 820 SDs, 0 SdLazy, 4275 SolverSat, 1335 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 305 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=699occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 627 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 14.9s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 183776 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...