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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:07:56,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:07:56,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:07:56,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:07:56,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:07:56,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:07:56,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:07:56,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:07:56,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:07:56,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:07:56,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:07:56,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:07:56,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:07:56,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:07:56,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:07:56,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:07:56,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:07:56,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:07:56,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:07:56,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:07:56,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:07:56,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:07:56,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:07:56,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:07:56,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:07:56,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:07:56,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:07:56,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:07:56,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:07:56,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:07:56,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:07:56,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:07:56,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:07:56,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:07:56,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:07:56,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:07:56,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:07:56,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:07:56,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:07:56,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:07:56,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:07:56,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 13:07:56,123 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:07:56,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:07:56,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:07:56,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:07:56,125 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:07:56,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:07:56,125 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:07:56,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:07:56,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:07:56,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:07:56,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:07:56,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:07:56,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:07:56,127 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:07:56,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:07:56,127 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:07:56,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:07:56,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:07:56,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:07:56,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:07:56,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:07:56,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:07:56,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:07:56,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:07:56,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:07:56,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:07:56,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:07:56,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:07:56,130 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:07:56,159 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:07:56,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:07:56,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:07:56,178 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:07:56,179 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:07:56,180 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2019-09-20 13:07:56,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1bf642e/f49758326fd641b5a61b85de69ae1f29/FLAG896201a8f [2019-09-20 13:07:56,846 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:07:56,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2019-09-20 13:07:56,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1bf642e/f49758326fd641b5a61b85de69ae1f29/FLAG896201a8f [2019-09-20 13:07:57,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1bf642e/f49758326fd641b5a61b85de69ae1f29 [2019-09-20 13:07:57,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:07:57,089 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:07:57,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:57,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:07:57,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:07:57,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:57" (1/1) ... [2019-09-20 13:07:57,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a891bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:57, skipping insertion in model container [2019-09-20 13:07:57,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:57" (1/1) ... [2019-09-20 13:07:57,104 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:07:57,170 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:07:57,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:57,630 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:07:57,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:57,812 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:07:57,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:57 WrapperNode [2019-09-20 13:07:57,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:57,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:07:57,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:07:57,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:07:57,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:57" (1/1) ... [2019-09-20 13:07:57,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:57" (1/1) ... [2019-09-20 13:07:57,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:57" (1/1) ... [2019-09-20 13:07:57,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:57" (1/1) ... [2019-09-20 13:07:57,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:57" (1/1) ... [2019-09-20 13:07:57,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:57" (1/1) ... [2019-09-20 13:07:57,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:57" (1/1) ... [2019-09-20 13:07:57,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:07:57,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:07:57,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:07:57,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:07:57,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-20 13:07:58,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:07:58,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:07:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:07:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:07:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:07:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:07:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:07:58,035 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:07:58,035 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:07:58,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:07:58,037 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:07:58,037 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:07:58,040 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:07:58,041 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:07:58,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:07:58,041 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:07:58,041 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:07:58,042 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:07:58,042 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:07:58,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:07:58,042 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:07:58,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:07:58,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:07:58,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:07:58,043 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:07:58,043 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:07:58,043 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:58,043 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:07:58,044 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:07:58,044 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:07:58,044 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:07:58,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:07:58,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:07:58,044 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:07:58,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:07:58,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:07:58,045 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:07:58,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:58,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:58,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:07:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:07:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:07:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:07:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:07:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:07:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:07:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:07:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:07:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:07:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:07:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:07:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:07:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:07:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:07:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:07:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:07:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:07:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:07:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:07:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:07:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:07:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:07:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:07:58,052 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:07:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:07:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:07:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:07:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:07:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:07:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:07:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:07:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:07:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:07:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:07:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:07:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:07:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:07:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:07:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:07:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:07:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:58,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:07:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:07:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:07:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:07:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:07:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:07:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:07:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:07:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:07:59,421 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:07:59,422 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:07:59,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:59 BoogieIcfgContainer [2019-09-20 13:07:59,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:07:59,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:07:59,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:07:59,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:07:59,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:07:57" (1/3) ... [2019-09-20 13:07:59,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416645a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:59, skipping insertion in model container [2019-09-20 13:07:59,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:57" (2/3) ... [2019-09-20 13:07:59,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416645a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:59, skipping insertion in model container [2019-09-20 13:07:59,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:59" (3/3) ... [2019-09-20 13:07:59,433 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product55.cil.c [2019-09-20 13:07:59,445 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:07:59,464 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:07:59,482 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:07:59,525 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:07:59,526 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:07:59,527 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:07:59,527 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:07:59,527 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:07:59,527 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:07:59,528 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:07:59,529 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:07:59,529 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:07:59,558 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2019-09-20 13:07:59,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:07:59,570 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:59,571 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-20 13:07:59,573 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:59,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:59,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1039510468, now seen corresponding path program 1 times [2019-09-20 13:07:59,580 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:59,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:59,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:59,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:59,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:59,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:59,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:59,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:07:59,999 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:08:00,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:08:00,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:00,025 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 2 states. [2019-09-20 13:08:00,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:00,117 INFO L93 Difference]: Finished difference Result 320 states and 397 transitions. [2019-09-20 13:08:00,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:08:00,119 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:08:00,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:00,143 INFO L225 Difference]: With dead ends: 320 [2019-09-20 13:08:00,143 INFO L226 Difference]: Without dead ends: 162 [2019-09-20 13:08:00,155 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:00,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2019-09-20 13:08:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2019-09-20 13:08:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-09-20 13:08:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 192 transitions. [2019-09-20 13:08:00,221 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 192 transitions. Word has length 59 [2019-09-20 13:08:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:00,221 INFO L475 AbstractCegarLoop]: Abstraction has 162 states and 192 transitions. [2019-09-20 13:08:00,222 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:08:00,222 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 192 transitions. [2019-09-20 13:08:00,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:08:00,226 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:00,226 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-20 13:08:00,227 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:00,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:00,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1700142027, now seen corresponding path program 1 times [2019-09-20 13:08:00,227 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:00,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:00,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:00,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:00,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:00,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:00,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:00,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:08:00,360 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:08:00,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:08:00,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:00,362 INFO L87 Difference]: Start difference. First operand 162 states and 192 transitions. Second operand 3 states. [2019-09-20 13:08:00,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:00,406 INFO L93 Difference]: Finished difference Result 263 states and 311 transitions. [2019-09-20 13:08:00,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:08:00,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:08:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:00,413 INFO L225 Difference]: With dead ends: 263 [2019-09-20 13:08:00,413 INFO L226 Difference]: Without dead ends: 153 [2019-09-20 13:08:00,417 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:00,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-09-20 13:08:00,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-09-20 13:08:00,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-09-20 13:08:00,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2019-09-20 13:08:00,440 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 60 [2019-09-20 13:08:00,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:00,441 INFO L475 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2019-09-20 13:08:00,441 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:08:00,441 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2019-09-20 13:08:00,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-20 13:08:00,443 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:00,443 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-20 13:08:00,444 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:00,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:00,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1740397712, now seen corresponding path program 1 times [2019-09-20 13:08:00,444 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:00,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:00,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:00,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:00,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:00,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:00,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:00,599 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:00,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:00,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:00,600 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 7 states. [2019-09-20 13:08:01,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:01,192 INFO L93 Difference]: Finished difference Result 459 states and 558 transitions. [2019-09-20 13:08:01,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:08:01,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-20 13:08:01,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:01,203 INFO L225 Difference]: With dead ends: 459 [2019-09-20 13:08:01,203 INFO L226 Difference]: Without dead ends: 334 [2019-09-20 13:08:01,207 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:08:01,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2019-09-20 13:08:01,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 326. [2019-09-20 13:08:01,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2019-09-20 13:08:01,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2019-09-20 13:08:01,296 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 64 [2019-09-20 13:08:01,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:01,296 INFO L475 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2019-09-20 13:08:01,297 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:01,297 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2019-09-20 13:08:01,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:08:01,300 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:01,300 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-20 13:08:01,300 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:01,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:01,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1889366184, now seen corresponding path program 1 times [2019-09-20 13:08:01,301 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:01,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:01,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:01,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:01,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:01,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:08:01,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:01,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:01,457 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:01,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:01,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:01,458 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand 7 states. [2019-09-20 13:08:02,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:02,274 INFO L93 Difference]: Finished difference Result 819 states and 1066 transitions. [2019-09-20 13:08:02,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:08:02,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:08:02,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:02,281 INFO L225 Difference]: With dead ends: 819 [2019-09-20 13:08:02,281 INFO L226 Difference]: Without dead ends: 521 [2019-09-20 13:08:02,283 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:02,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2019-09-20 13:08:02,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 468. [2019-09-20 13:08:02,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2019-09-20 13:08:02,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 565 transitions. [2019-09-20 13:08:02,375 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 565 transitions. Word has length 70 [2019-09-20 13:08:02,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:02,376 INFO L475 AbstractCegarLoop]: Abstraction has 468 states and 565 transitions. [2019-09-20 13:08:02,376 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 565 transitions. [2019-09-20 13:08:02,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:08:02,381 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:02,381 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2019-09-20 13:08:02,381 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:02,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1315837753, now seen corresponding path program 1 times [2019-09-20 13:08:02,382 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:02,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:02,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:02,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:02,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:02,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:02,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:08:02,486 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:08:02,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:08:02,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:08:02,487 INFO L87 Difference]: Start difference. First operand 468 states and 565 transitions. Second operand 6 states. [2019-09-20 13:08:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:02,532 INFO L93 Difference]: Finished difference Result 918 states and 1131 transitions. [2019-09-20 13:08:02,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:08:02,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-09-20 13:08:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:02,536 INFO L225 Difference]: With dead ends: 918 [2019-09-20 13:08:02,537 INFO L226 Difference]: Without dead ends: 478 [2019-09-20 13:08:02,538 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2019-09-20 13:08:02,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2019-09-20 13:08:02,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2019-09-20 13:08:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 575 transitions. [2019-09-20 13:08:02,573 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 575 transitions. Word has length 97 [2019-09-20 13:08:02,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:02,573 INFO L475 AbstractCegarLoop]: Abstraction has 478 states and 575 transitions. [2019-09-20 13:08:02,573 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:08:02,574 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 575 transitions. [2019-09-20 13:08:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:08:02,576 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:02,576 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2019-09-20 13:08:02,576 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:02,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:02,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1243451195, now seen corresponding path program 1 times [2019-09-20 13:08:02,577 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:02,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:02,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:02,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:02,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:02,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:02,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:08:02,666 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:08:02,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:08:02,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:02,667 INFO L87 Difference]: Start difference. First operand 478 states and 575 transitions. Second operand 8 states. [2019-09-20 13:08:02,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:02,713 INFO L93 Difference]: Finished difference Result 942 states and 1174 transitions. [2019-09-20 13:08:02,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:08:02,713 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2019-09-20 13:08:02,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:02,717 INFO L225 Difference]: With dead ends: 942 [2019-09-20 13:08:02,717 INFO L226 Difference]: Without dead ends: 492 [2019-09-20 13:08:02,719 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:02,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-09-20 13:08:02,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 486. [2019-09-20 13:08:02,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2019-09-20 13:08:02,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2019-09-20 13:08:02,751 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 97 [2019-09-20 13:08:02,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:02,751 INFO L475 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2019-09-20 13:08:02,752 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:08:02,752 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2019-09-20 13:08:02,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:08:02,754 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:02,754 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2019-09-20 13:08:02,754 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:02,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:02,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1573216956, now seen corresponding path program 1 times [2019-09-20 13:08:02,755 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:02,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:02,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:02,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:02,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:02,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:02,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:08:02,839 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:02,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:02,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:02,840 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 4 states. [2019-09-20 13:08:03,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:03,151 INFO L93 Difference]: Finished difference Result 1550 states and 1948 transitions. [2019-09-20 13:08:03,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:03,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2019-09-20 13:08:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:03,158 INFO L225 Difference]: With dead ends: 1550 [2019-09-20 13:08:03,158 INFO L226 Difference]: Without dead ends: 1092 [2019-09-20 13:08:03,160 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:03,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2019-09-20 13:08:03,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1075. [2019-09-20 13:08:03,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2019-09-20 13:08:03,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1324 transitions. [2019-09-20 13:08:03,232 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1324 transitions. Word has length 97 [2019-09-20 13:08:03,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:03,233 INFO L475 AbstractCegarLoop]: Abstraction has 1075 states and 1324 transitions. [2019-09-20 13:08:03,233 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1324 transitions. [2019-09-20 13:08:03,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-20 13:08:03,236 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:03,236 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:03,236 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:03,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:03,237 INFO L82 PathProgramCache]: Analyzing trace with hash 164101122, now seen corresponding path program 1 times [2019-09-20 13:08:03,237 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:03,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:03,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:03,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:03,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:03,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:03,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:08:03,416 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:08:03,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:08:03,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:08:03,416 INFO L87 Difference]: Start difference. First operand 1075 states and 1324 transitions. Second operand 9 states. [2019-09-20 13:08:04,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:04,643 INFO L93 Difference]: Finished difference Result 2922 states and 3768 transitions. [2019-09-20 13:08:04,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:04,646 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2019-09-20 13:08:04,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:04,658 INFO L225 Difference]: With dead ends: 2922 [2019-09-20 13:08:04,659 INFO L226 Difference]: Without dead ends: 2067 [2019-09-20 13:08:04,666 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:04,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2019-09-20 13:08:04,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 1836. [2019-09-20 13:08:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2019-09-20 13:08:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2223 transitions. [2019-09-20 13:08:04,803 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2223 transitions. Word has length 101 [2019-09-20 13:08:04,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:04,805 INFO L475 AbstractCegarLoop]: Abstraction has 1836 states and 2223 transitions. [2019-09-20 13:08:04,806 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:08:04,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2223 transitions. [2019-09-20 13:08:04,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-09-20 13:08:04,814 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:04,814 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:04,815 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:04,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1947078735, now seen corresponding path program 1 times [2019-09-20 13:08:04,816 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:04,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:04,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:04,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:04,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-20 13:08:05,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:05,086 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:05,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:05,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:08:05,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 29 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:05,627 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:05,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:08:05,628 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:08:05,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:08:05,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:08:05,631 INFO L87 Difference]: Start difference. First operand 1836 states and 2223 transitions. Second operand 16 states. [2019-09-20 13:08:07,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:07,247 INFO L93 Difference]: Finished difference Result 4133 states and 5212 transitions. [2019-09-20 13:08:07,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:08:07,247 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2019-09-20 13:08:07,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:07,263 INFO L225 Difference]: With dead ends: 4133 [2019-09-20 13:08:07,263 INFO L226 Difference]: Without dead ends: 2511 [2019-09-20 13:08:07,271 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2019-09-20 13:08:07,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2019-09-20 13:08:07,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2265. [2019-09-20 13:08:07,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2265 states. [2019-09-20 13:08:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 2693 transitions. [2019-09-20 13:08:07,518 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 2693 transitions. Word has length 178 [2019-09-20 13:08:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:07,519 INFO L475 AbstractCegarLoop]: Abstraction has 2265 states and 2693 transitions. [2019-09-20 13:08:07,519 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:08:07,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 2693 transitions. [2019-09-20 13:08:07,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2019-09-20 13:08:07,530 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:07,531 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:07,531 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:07,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:07,532 INFO L82 PathProgramCache]: Analyzing trace with hash 477472839, now seen corresponding path program 1 times [2019-09-20 13:08:07,532 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:07,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:07,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:07,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:07,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2019-09-20 13:08:07,832 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:07,833 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:07,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:08,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:08:08,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 208 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-09-20 13:08:08,439 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:08,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-20 13:08:08,442 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:08:08,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:08:08,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:08,444 INFO L87 Difference]: Start difference. First operand 2265 states and 2693 transitions. Second operand 19 states. [2019-09-20 13:08:15,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:15,441 INFO L93 Difference]: Finished difference Result 8877 states and 12733 transitions. [2019-09-20 13:08:15,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-20 13:08:15,442 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 301 [2019-09-20 13:08:15,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:15,493 INFO L225 Difference]: With dead ends: 8877 [2019-09-20 13:08:15,493 INFO L226 Difference]: Without dead ends: 6648 [2019-09-20 13:08:15,514 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=595, Invalid=3827, Unknown=0, NotChecked=0, Total=4422 [2019-09-20 13:08:15,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6648 states. [2019-09-20 13:08:16,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6648 to 4755. [2019-09-20 13:08:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4755 states. [2019-09-20 13:08:16,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4755 states to 4755 states and 5472 transitions. [2019-09-20 13:08:16,073 INFO L78 Accepts]: Start accepts. Automaton has 4755 states and 5472 transitions. Word has length 301 [2019-09-20 13:08:16,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:16,074 INFO L475 AbstractCegarLoop]: Abstraction has 4755 states and 5472 transitions. [2019-09-20 13:08:16,074 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:08:16,074 INFO L276 IsEmpty]: Start isEmpty. Operand 4755 states and 5472 transitions. [2019-09-20 13:08:16,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2019-09-20 13:08:16,089 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:16,090 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:16,090 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:16,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:16,091 INFO L82 PathProgramCache]: Analyzing trace with hash -89400507, now seen corresponding path program 1 times [2019-09-20 13:08:16,091 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:16,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:16,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:16,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:16,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 95 proven. 61 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-09-20 13:08:16,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:16,349 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:16,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:16,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-20 13:08:16,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:16,790 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 244 proven. 18 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-09-20 13:08:16,795 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:16,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:08:16,797 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:08:16,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:08:16,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:08:16,798 INFO L87 Difference]: Start difference. First operand 4755 states and 5472 transitions. Second operand 20 states. [2019-09-20 13:08:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:19,052 INFO L93 Difference]: Finished difference Result 9076 states and 10508 transitions. [2019-09-20 13:08:19,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:19,053 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 317 [2019-09-20 13:08:19,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:19,084 INFO L225 Difference]: With dead ends: 9076 [2019-09-20 13:08:19,084 INFO L226 Difference]: Without dead ends: 4771 [2019-09-20 13:08:19,098 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:08:19,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2019-09-20 13:08:19,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 4759. [2019-09-20 13:08:19,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4759 states. [2019-09-20 13:08:19,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 5466 transitions. [2019-09-20 13:08:19,375 INFO L78 Accepts]: Start accepts. Automaton has 4759 states and 5466 transitions. Word has length 317 [2019-09-20 13:08:19,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:19,376 INFO L475 AbstractCegarLoop]: Abstraction has 4759 states and 5466 transitions. [2019-09-20 13:08:19,376 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:08:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4759 states and 5466 transitions. [2019-09-20 13:08:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2019-09-20 13:08:19,398 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:19,398 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:19,398 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:19,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:19,399 INFO L82 PathProgramCache]: Analyzing trace with hash -274859943, now seen corresponding path program 1 times [2019-09-20 13:08:19,399 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:19,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:19,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:19,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 95 proven. 44 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2019-09-20 13:08:19,937 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:19,938 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:20,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:20,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:08:20,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 171 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-09-20 13:08:20,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:20,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:08:20,368 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:08:20,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:08:20,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:20,368 INFO L87 Difference]: Start difference. First operand 4759 states and 5466 transitions. Second operand 14 states. [2019-09-20 13:08:23,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:23,516 INFO L93 Difference]: Finished difference Result 10694 states and 13472 transitions. [2019-09-20 13:08:23,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-20 13:08:23,517 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 318 [2019-09-20 13:08:23,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:23,580 INFO L225 Difference]: With dead ends: 10694 [2019-09-20 13:08:23,580 INFO L226 Difference]: Without dead ends: 7837 [2019-09-20 13:08:23,594 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 337 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2019-09-20 13:08:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7837 states. [2019-09-20 13:08:23,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7837 to 5829. [2019-09-20 13:08:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5829 states. [2019-09-20 13:08:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5829 states to 5829 states and 6690 transitions. [2019-09-20 13:08:23,994 INFO L78 Accepts]: Start accepts. Automaton has 5829 states and 6690 transitions. Word has length 318 [2019-09-20 13:08:23,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:23,996 INFO L475 AbstractCegarLoop]: Abstraction has 5829 states and 6690 transitions. [2019-09-20 13:08:23,996 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:08:23,996 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states and 6690 transitions. [2019-09-20 13:08:24,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2019-09-20 13:08:24,019 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:24,019 INFO L407 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 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] [2019-09-20 13:08:24,020 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:24,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:24,020 INFO L82 PathProgramCache]: Analyzing trace with hash -490102378, now seen corresponding path program 1 times [2019-09-20 13:08:24,020 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:24,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:24,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:24,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:24,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2019-09-20 13:08:24,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:24,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:08:24,349 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:24,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:24,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:24,350 INFO L87 Difference]: Start difference. First operand 5829 states and 6690 transitions. Second operand 4 states. [2019-09-20 13:08:24,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:24,724 INFO L93 Difference]: Finished difference Result 6932 states and 8004 transitions. [2019-09-20 13:08:24,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:24,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 434 [2019-09-20 13:08:24,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:24,737 INFO L225 Difference]: With dead ends: 6932 [2019-09-20 13:08:24,737 INFO L226 Difference]: Without dead ends: 2383 [2019-09-20 13:08:24,751 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:24,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2019-09-20 13:08:24,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 2317. [2019-09-20 13:08:24,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2019-09-20 13:08:24,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2575 transitions. [2019-09-20 13:08:24,881 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2575 transitions. Word has length 434 [2019-09-20 13:08:24,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:24,882 INFO L475 AbstractCegarLoop]: Abstraction has 2317 states and 2575 transitions. [2019-09-20 13:08:24,882 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:24,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2575 transitions. [2019-09-20 13:08:24,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2019-09-20 13:08:24,890 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:24,890 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 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] [2019-09-20 13:08:24,891 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:24,891 INFO L82 PathProgramCache]: Analyzing trace with hash -286203394, now seen corresponding path program 1 times [2019-09-20 13:08:24,891 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:24,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:24,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:24,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:24,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 115 proven. 76 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2019-09-20 13:08:25,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:25,179 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:25,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:25,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-20 13:08:25,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:25,565 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:08:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 368 proven. 18 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-09-20 13:08:25,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:25,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2019-09-20 13:08:25,740 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-20 13:08:25,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-20 13:08:25,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:08:25,740 INFO L87 Difference]: Start difference. First operand 2317 states and 2575 transitions. Second operand 15 states.