/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:01:01,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:01:01,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:01:01,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:01:01,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:01:01,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:01:01,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:01:01,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:01:01,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:01:01,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:01:01,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:01:01,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:01:01,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:01:01,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:01:01,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:01:01,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:01:01,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:01:01,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:01:01,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:01:01,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:01:01,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:01:01,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:01:01,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:01:01,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:01:01,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:01:01,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:01:01,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:01:01,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:01:01,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:01:01,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:01:01,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:01:01,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:01:01,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:01:01,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:01:01,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:01:01,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:01:01,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:01:01,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:01:01,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:01:01,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:01:01,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:01:01,144 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 [2020-08-21 18:01:01,185 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:01:01,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:01:01,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:01:01,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:01:01,188 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:01:01,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:01:01,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:01:01,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:01:01,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:01:01,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:01:01,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:01:01,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:01:01,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:01:01,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:01:01,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:01:01,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:01:01,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:01:01,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:01:01,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:01:01,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:01:01,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:01:01,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:01:01,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:01:01,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:01:01,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:01:01,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:01:01,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:01:01,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:01:01,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:01:01,196 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 -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:01:01,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:01:01,479 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:01:01,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:01:01,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:01:01,486 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:01:01,487 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-21 18:01:01,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e971d40f7/b30ae603e9b94d05a0194cc5233c5b51/FLAGd33d65040 [2020-08-21 18:01:02,087 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:01:02,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-21 18:01:02,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e971d40f7/b30ae603e9b94d05a0194cc5233c5b51/FLAGd33d65040 [2020-08-21 18:01:02,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e971d40f7/b30ae603e9b94d05a0194cc5233c5b51 [2020-08-21 18:01:02,430 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:01:02,432 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:01:02,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:01:02,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:01:02,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:01:02,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:01:02" (1/1) ... [2020-08-21 18:01:02,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b530acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:02, skipping insertion in model container [2020-08-21 18:01:02,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:01:02" (1/1) ... [2020-08-21 18:01:02,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:01:02,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:01:02,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:01:02,901 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:01:03,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:01:03,043 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:01:03,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:03 WrapperNode [2020-08-21 18:01:03,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:01:03,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:01:03,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:01:03,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:01:03,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:03" (1/1) ... [2020-08-21 18:01:03,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:03" (1/1) ... [2020-08-21 18:01:03,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:03" (1/1) ... [2020-08-21 18:01:03,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:03" (1/1) ... [2020-08-21 18:01:03,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:03" (1/1) ... [2020-08-21 18:01:03,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:03" (1/1) ... [2020-08-21 18:01:03,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:03" (1/1) ... [2020-08-21 18:01:03,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:01:03,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:01:03,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:01:03,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:01:03,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:03" (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 [2020-08-21 18:01:03,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:01:03,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:01:03,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:01:03,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 18:01:03,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:01:03,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:01:03,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:01:03,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:01:03,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:01:03,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:01:03,249 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:01:03,249 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:01:03,249 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:01:03,249 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:01:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:01:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:01:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:01:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:01:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 18:01:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:01:03,250 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:01:03,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:01:03,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:01:03,251 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:01:03,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:01:03,251 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 18:01:03,251 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 18:01:03,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:01:03,253 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:01:03,253 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:01:03,253 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:01:03,253 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:01:03,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:01:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:01:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:01:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:01:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:01:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:01:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:01:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:01:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:01:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:01:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:01:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:01:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:01:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:01:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 18:01:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:01:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:01:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:01:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:01:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:01:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:01:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:01:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:01:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:01:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:01:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:01:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:01:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:01:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:01:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:01:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:01:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:01:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:01:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:01:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:01:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:01:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:01:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:01:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 18:01:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 18:01:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:01:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:01:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:01:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:01:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:01:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:01:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:01:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:01:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:01:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:01:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:01:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:01:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:01:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 18:01:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:01:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:01:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:01:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:01:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:01:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:01:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:01:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:01:04,293 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:01:04,294 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:01:04,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:01:04 BoogieIcfgContainer [2020-08-21 18:01:04,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:01:04,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:01:04,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:01:04,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:01:04,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:01:02" (1/3) ... [2020-08-21 18:01:04,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19002ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:01:04, skipping insertion in model container [2020-08-21 18:01:04,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:01:03" (2/3) ... [2020-08-21 18:01:04,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19002ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:01:04, skipping insertion in model container [2020-08-21 18:01:04,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:01:04" (3/3) ... [2020-08-21 18:01:04,313 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2020-08-21 18:01:04,323 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:01:04,332 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:01:04,346 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:01:04,374 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:01:04,374 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:01:04,374 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:01:04,374 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:01:04,375 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:01:04,375 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:01:04,375 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:01:04,375 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:01:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-21 18:01:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 18:01:04,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:04,407 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] [2020-08-21 18:01:04,408 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:04,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:04,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1915366745, now seen corresponding path program 1 times [2020-08-21 18:01:04,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:04,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932200915] [2020-08-21 18:01:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:05,104 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:05,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:05,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:05,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:05,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:05,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:05,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:01:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:05,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:01:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:01:05,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932200915] [2020-08-21 18:01:05,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:01:05,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:01:05,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038619173] [2020-08-21 18:01:05,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:01:05,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:05,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:01:05,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:01:05,230 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-21 18:01:06,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:06,388 INFO L93 Difference]: Finished difference Result 310 states and 398 transitions. [2020-08-21 18:01:06,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:01:06,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 18:01:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:06,409 INFO L225 Difference]: With dead ends: 310 [2020-08-21 18:01:06,409 INFO L226 Difference]: Without dead ends: 168 [2020-08-21 18:01:06,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:01:06,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-21 18:01:06,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2020-08-21 18:01:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-21 18:01:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2020-08-21 18:01:06,539 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 46 [2020-08-21 18:01:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:06,540 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2020-08-21 18:01:06,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:01:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2020-08-21 18:01:06,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 18:01:06,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:06,543 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] [2020-08-21 18:01:06,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:01:06,544 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:06,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:06,545 INFO L82 PathProgramCache]: Analyzing trace with hash -868486899, now seen corresponding path program 1 times [2020-08-21 18:01:06,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:06,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640533684] [2020-08-21 18:01:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:06,889 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:06,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:06,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:06,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:06,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:06,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:06,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:01:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:06,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:01:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:01:06,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640533684] [2020-08-21 18:01:06,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:01:06,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:01:06,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012829838] [2020-08-21 18:01:06,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:01:06,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:06,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:01:06,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:01:06,933 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand 4 states. [2020-08-21 18:01:07,326 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:08,172 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2020-08-21 18:01:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:01:08,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 18:01:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:08,176 INFO L225 Difference]: With dead ends: 230 [2020-08-21 18:01:08,176 INFO L226 Difference]: Without dead ends: 152 [2020-08-21 18:01:08,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:01:08,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-21 18:01:08,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2020-08-21 18:01:08,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-21 18:01:08,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2020-08-21 18:01:08,217 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 47 [2020-08-21 18:01:08,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:08,217 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2020-08-21 18:01:08,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:01:08,218 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2020-08-21 18:01:08,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 18:01:08,219 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:08,220 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] [2020-08-21 18:01:08,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:01:08,220 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:08,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:08,220 INFO L82 PathProgramCache]: Analyzing trace with hash -905097918, now seen corresponding path program 1 times [2020-08-21 18:01:08,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:08,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224525332] [2020-08-21 18:01:08,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:08,514 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:08,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:08,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:08,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:08,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:08,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:01:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:08,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:01:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:08,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:01:08,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224525332] [2020-08-21 18:01:08,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:01:08,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:01:08,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83467779] [2020-08-21 18:01:08,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:01:08,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:08,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:01:08,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:01:08,596 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand 8 states. [2020-08-21 18:01:08,986 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:09,334 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:09,592 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:09,829 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:10,611 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:12,354 INFO L93 Difference]: Finished difference Result 427 states and 518 transitions. [2020-08-21 18:01:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:01:12,355 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 18:01:12,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:12,361 INFO L225 Difference]: With dead ends: 427 [2020-08-21 18:01:12,361 INFO L226 Difference]: Without dead ends: 327 [2020-08-21 18:01:12,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:01:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-21 18:01:12,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 250. [2020-08-21 18:01:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-08-21 18:01:12,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 294 transitions. [2020-08-21 18:01:12,454 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 294 transitions. Word has length 52 [2020-08-21 18:01:12,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:12,455 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 294 transitions. [2020-08-21 18:01:12,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:01:12,455 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 294 transitions. [2020-08-21 18:01:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 18:01:12,457 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:12,457 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] [2020-08-21 18:01:12,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:01:12,458 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:12,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:12,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1583600214, now seen corresponding path program 1 times [2020-08-21 18:01:12,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:12,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499245606] [2020-08-21 18:01:12,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:12,826 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:12,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:12,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:12,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:12,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:12,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:12,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:01:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:12,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:01:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:12,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 18:01:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:01:12,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499245606] [2020-08-21 18:01:12,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:01:12,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 18:01:12,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408445617] [2020-08-21 18:01:12,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:01:12,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:12,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:01:12,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:01:12,957 INFO L87 Difference]: Start difference. First operand 250 states and 294 transitions. Second operand 12 states. [2020-08-21 18:01:13,316 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:13,628 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:13,931 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:14,168 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:14,683 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:15,410 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:15,746 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:01:15,997 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:01:16,294 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:16,581 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:01:16,934 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:01:17,189 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:01:17,418 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:19,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:19,003 INFO L93 Difference]: Finished difference Result 1013 states and 1362 transitions. [2020-08-21 18:01:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 18:01:19,003 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-21 18:01:19,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:19,020 INFO L225 Difference]: With dead ends: 1013 [2020-08-21 18:01:19,020 INFO L226 Difference]: Without dead ends: 787 [2020-08-21 18:01:19,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 18:01:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-21 18:01:19,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 690. [2020-08-21 18:01:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-08-21 18:01:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 848 transitions. [2020-08-21 18:01:19,216 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 848 transitions. Word has length 57 [2020-08-21 18:01:19,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:19,216 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 848 transitions. [2020-08-21 18:01:19,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:01:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 848 transitions. [2020-08-21 18:01:19,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 18:01:19,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:19,220 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] [2020-08-21 18:01:19,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:01:19,221 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:19,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:19,221 INFO L82 PathProgramCache]: Analyzing trace with hash -436303684, now seen corresponding path program 1 times [2020-08-21 18:01:19,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:19,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464183945] [2020-08-21 18:01:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:19,489 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:19,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:19,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:19,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:19,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:19,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:01:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:19,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:01:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:19,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:01:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:19,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 18:01:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:01:19,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464183945] [2020-08-21 18:01:19,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:01:19,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:01:19,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087938318] [2020-08-21 18:01:19,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:01:19,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:19,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:01:19,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:01:19,628 INFO L87 Difference]: Start difference. First operand 690 states and 848 transitions. Second operand 6 states. [2020-08-21 18:01:19,891 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:21,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:21,577 INFO L93 Difference]: Finished difference Result 1681 states and 2195 transitions. [2020-08-21 18:01:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 18:01:21,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-21 18:01:21,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:21,585 INFO L225 Difference]: With dead ends: 1681 [2020-08-21 18:01:21,585 INFO L226 Difference]: Without dead ends: 1015 [2020-08-21 18:01:21,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:01:21,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-08-21 18:01:21,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 948. [2020-08-21 18:01:21,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-21 18:01:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1172 transitions. [2020-08-21 18:01:21,770 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1172 transitions. Word has length 61 [2020-08-21 18:01:21,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:21,771 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1172 transitions. [2020-08-21 18:01:21,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:01:21,771 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1172 transitions. [2020-08-21 18:01:21,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 18:01:21,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:21,774 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:01:21,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:01:21,775 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:21,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1209411089, now seen corresponding path program 1 times [2020-08-21 18:01:21,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:21,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131601177] [2020-08-21 18:01:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:22,035 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:22,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:22,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:22,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:22,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:22,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:22,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:01:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:22,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:01:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:22,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 18:01:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:22,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:22,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:22,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:01:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:22,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 18:01:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:22,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:01:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 18:01:22,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131601177] [2020-08-21 18:01:22,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:01:22,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 18:01:22,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301571531] [2020-08-21 18:01:22,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:01:22,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:22,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:01:22,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:01:22,209 INFO L87 Difference]: Start difference. First operand 948 states and 1172 transitions. Second operand 10 states. [2020-08-21 18:01:22,759 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 18:01:23,320 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:25,253 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:26,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:26,674 INFO L93 Difference]: Finished difference Result 1803 states and 2319 transitions. [2020-08-21 18:01:26,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 18:01:26,675 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-21 18:01:26,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:26,682 INFO L225 Difference]: With dead ends: 1803 [2020-08-21 18:01:26,682 INFO L226 Difference]: Without dead ends: 1150 [2020-08-21 18:01:26,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-21 18:01:26,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-08-21 18:01:26,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1055. [2020-08-21 18:01:26,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-08-21 18:01:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1284 transitions. [2020-08-21 18:01:26,913 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1284 transitions. Word has length 89 [2020-08-21 18:01:26,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:26,915 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1284 transitions. [2020-08-21 18:01:26,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:01:26,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1284 transitions. [2020-08-21 18:01:26,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 18:01:26,922 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:26,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:01:26,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:01:26,923 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:26,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:26,923 INFO L82 PathProgramCache]: Analyzing trace with hash 2033395005, now seen corresponding path program 1 times [2020-08-21 18:01:26,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:26,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821315648] [2020-08-21 18:01:26,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,254 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:27,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:01:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:01:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:01:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 18:01:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 18:01:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 18:01:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 18:01:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 18:01:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:27,468 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 18:01:27,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821315648] [2020-08-21 18:01:27,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:01:27,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 18:01:27,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672955747] [2020-08-21 18:01:27,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:01:27,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:27,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:01:27,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:01:27,475 INFO L87 Difference]: Start difference. First operand 1055 states and 1284 transitions. Second operand 10 states. [2020-08-21 18:01:28,493 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:28,735 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:01:28,988 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:29,228 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:30,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:30,266 INFO L93 Difference]: Finished difference Result 2230 states and 2894 transitions. [2020-08-21 18:01:30,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:01:30,267 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-21 18:01:30,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:30,277 INFO L225 Difference]: With dead ends: 2230 [2020-08-21 18:01:30,277 INFO L226 Difference]: Without dead ends: 1199 [2020-08-21 18:01:30,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:01:30,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-21 18:01:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1085. [2020-08-21 18:01:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-08-21 18:01:30,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1318 transitions. [2020-08-21 18:01:30,515 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1318 transitions. Word has length 130 [2020-08-21 18:01:30,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:30,515 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1318 transitions. [2020-08-21 18:01:30,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:01:30,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1318 transitions. [2020-08-21 18:01:30,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-21 18:01:30,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:30,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:01:30,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:01:30,520 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:30,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:30,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1477382459, now seen corresponding path program 1 times [2020-08-21 18:01:30,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:30,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599664115] [2020-08-21 18:01:30,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,784 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:30,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:01:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:01:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:01:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 18:01:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 18:01:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 18:01:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 18:01:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 18:01:30,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599664115] [2020-08-21 18:01:30,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:01:30,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 18:01:30,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707375320] [2020-08-21 18:01:30,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:01:30,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:30,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:01:30,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:01:30,994 INFO L87 Difference]: Start difference. First operand 1085 states and 1318 transitions. Second operand 12 states. [2020-08-21 18:01:31,510 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:31,819 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:32,140 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:32,882 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:33,139 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:33,392 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:34,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:34,378 INFO L93 Difference]: Finished difference Result 1969 states and 2463 transitions. [2020-08-21 18:01:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:01:34,378 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-21 18:01:34,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:34,384 INFO L225 Difference]: With dead ends: 1969 [2020-08-21 18:01:34,384 INFO L226 Difference]: Without dead ends: 908 [2020-08-21 18:01:34,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:01:34,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-08-21 18:01:34,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 856. [2020-08-21 18:01:34,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2020-08-21 18:01:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1029 transitions. [2020-08-21 18:01:34,637 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1029 transitions. Word has length 126 [2020-08-21 18:01:34,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:34,638 INFO L479 AbstractCegarLoop]: Abstraction has 856 states and 1029 transitions. [2020-08-21 18:01:34,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:01:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1029 transitions. [2020-08-21 18:01:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 18:01:34,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:34,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:01:34,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:01:34,643 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:34,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:34,644 INFO L82 PathProgramCache]: Analyzing trace with hash -41255168, now seen corresponding path program 1 times [2020-08-21 18:01:34,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:34,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602160274] [2020-08-21 18:01:34,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:34,974 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:34,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:34,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:34,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:34,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:34,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:01:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:01:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:01:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:01:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 18:01:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 18:01:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 18:01:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 18:01:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:01:35,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602160274] [2020-08-21 18:01:35,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:01:35,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 18:01:35,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145385177] [2020-08-21 18:01:35,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:01:35,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:35,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:01:35,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:01:35,230 INFO L87 Difference]: Start difference. First operand 856 states and 1029 transitions. Second operand 12 states. [2020-08-21 18:01:35,863 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:36,796 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:01:37,084 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:01:37,342 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:01:37,569 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:37,786 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:38,114 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:38,665 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:38,933 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:01:39,215 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:01:40,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:40,927 INFO L93 Difference]: Finished difference Result 2072 states and 2648 transitions. [2020-08-21 18:01:40,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 18:01:40,928 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-21 18:01:40,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:40,936 INFO L225 Difference]: With dead ends: 2072 [2020-08-21 18:01:40,937 INFO L226 Difference]: Without dead ends: 1389 [2020-08-21 18:01:40,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-21 18:01:40,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-08-21 18:01:41,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1217. [2020-08-21 18:01:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-08-21 18:01:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1483 transitions. [2020-08-21 18:01:41,214 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1483 transitions. Word has length 130 [2020-08-21 18:01:41,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:41,216 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1483 transitions. [2020-08-21 18:01:41,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:01:41,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1483 transitions. [2020-08-21 18:01:41,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-21 18:01:41,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:41,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:01:41,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:01:41,222 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:41,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:41,223 INFO L82 PathProgramCache]: Analyzing trace with hash -786970621, now seen corresponding path program 1 times [2020-08-21 18:01:41,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:41,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665304692] [2020-08-21 18:01:41,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,505 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:41,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:01:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:01:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:01:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:01:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 18:01:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:01:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-21 18:01:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 18:01:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-21 18:01:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-21 18:01:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-21 18:01:41,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665304692] [2020-08-21 18:01:41,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:01:41,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 18:01:41,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484736023] [2020-08-21 18:01:41,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 18:01:41,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:41,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 18:01:41,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:01:41,781 INFO L87 Difference]: Start difference. First operand 1217 states and 1483 transitions. Second operand 13 states. [2020-08-21 18:01:42,315 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:42,542 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:42,756 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:43,209 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:44,363 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:45,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:45,380 INFO L93 Difference]: Finished difference Result 2226 states and 2782 transitions. [2020-08-21 18:01:45,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 18:01:45,381 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-08-21 18:01:45,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:45,388 INFO L225 Difference]: With dead ends: 2226 [2020-08-21 18:01:45,389 INFO L226 Difference]: Without dead ends: 1233 [2020-08-21 18:01:45,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-08-21 18:01:45,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-08-21 18:01:45,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 911. [2020-08-21 18:01:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-08-21 18:01:45,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1058 transitions. [2020-08-21 18:01:45,598 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1058 transitions. Word has length 163 [2020-08-21 18:01:45,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:45,599 INFO L479 AbstractCegarLoop]: Abstraction has 911 states and 1058 transitions. [2020-08-21 18:01:45,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 18:01:45,600 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1058 transitions. [2020-08-21 18:01:45,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-21 18:01:45,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:45,606 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:01:45,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:01:45,606 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:45,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:45,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1876724494, now seen corresponding path program 2 times [2020-08-21 18:01:45,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:45,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243555929] [2020-08-21 18:01:45,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:01:45,716 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:01:45,716 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:01:45,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 18:01:45,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:01:45 BoogieIcfgContainer [2020-08-21 18:01:45,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:01:45,795 INFO L168 Benchmark]: Toolchain (without parser) took 43354.93 ms. Allocated memory was 141.6 MB in the beginning and 762.8 MB in the end (delta: 621.3 MB). Free memory was 103.4 MB in the beginning and 319.5 MB in the end (delta: -216.1 MB). Peak memory consumption was 405.2 MB. Max. memory is 7.1 GB. [2020-08-21 18:01:45,798 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:01:45,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.33 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 103.2 MB in the beginning and 170.8 MB in the end (delta: -67.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-21 18:01:45,799 INFO L168 Benchmark]: Boogie Preprocessor took 133.45 ms. Allocated memory is still 203.9 MB. Free memory was 170.8 MB in the beginning and 166.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:01:45,803 INFO L168 Benchmark]: RCFGBuilder took 1122.87 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 166.0 MB in the beginning and 188.1 MB in the end (delta: -22.1 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:01:45,804 INFO L168 Benchmark]: TraceAbstraction took 41480.20 ms. Allocated memory was 233.3 MB in the beginning and 762.8 MB in the end (delta: 529.5 MB). Free memory was 186.8 MB in the beginning and 319.5 MB in the end (delta: -132.7 MB). Peak memory consumption was 396.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:01:45,808 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 613.33 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 103.2 MB in the beginning and 170.8 MB in the end (delta: -67.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.45 ms. Allocated memory is still 203.9 MB. Free memory was 170.8 MB in the beginning and 166.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1122.87 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 166.0 MB in the beginning and 188.1 MB in the end (delta: -22.1 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41480.20 ms. Allocated memory was 233.3 MB in the beginning and 762.8 MB in the end (delta: 529.5 MB). Free memory was 186.8 MB in the beginning and 319.5 MB in the end (delta: -132.7 MB). Peak memory consumption was 396.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 752]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L757] int cleanupTimeShifts = 4; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; [L830] int retValue_acc ; [L831] int tmp ; [L835] FCALL select_helpers() [L836] FCALL select_features() [L837] CALL, EXPR valid_product() [L464] int retValue_acc ; [L467] retValue_acc = 1 [L468] return (retValue_acc); [L837] RET, EXPR valid_product() [L837] tmp = valid_product() [L839] COND TRUE \read(tmp) [L841] FCALL setup() [L842] CALL runTest() [L824] CALL test() [L480] int splverifierCounter ; [L481] int tmp ; [L482] int tmp___0 ; [L483] int tmp___1 ; [L484] int tmp___2 ; [L487] splverifierCounter = 0 [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp) [L501] CALL waterRise() [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 [L501] RET waterRise() [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L933] int retValue_acc ; [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L625] int tmp ; [L629] CALL, EXPR isMethaneAlarm() [L650] int retValue_acc ; [L654] CALL, EXPR isMethaneLevelCritical() [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); [L654] RET, EXPR isMethaneLevelCritical() [L654] retValue_acc = isMethaneLevelCritical() [L656] return (retValue_acc); [L629] RET, EXPR isMethaneAlarm() [L629] tmp = isMethaneAlarm() [L631] COND FALSE !(\read(tmp)) [L635] CALL activatePump__wrappee__highWaterSensor() [L619] pumpRunning = 1 [L635] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L752] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.3s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 34.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1357 SDtfs, 3146 SDslu, 1751 SDs, 0 SdLazy, 8580 SolverSat, 2306 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 475 GetRequests, 314 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 14.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1217occurred 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: 1.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 1059 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1067 NumberOfCodeBlocks, 1067 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 891 ConstructedInterpolants, 0 QuantifiedInterpolants, 329447 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 152/172 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...