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_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:07:26,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:07:26,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:07:26,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:07:26,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:07:26,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:07:26,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:07:26,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:07:26,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:07:26,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:07:26,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:07:26,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:07:26,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:07:26,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:07:26,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:07:26,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:07:26,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:07:26,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:07:26,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:07:26,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:07:26,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:07:26,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:07:26,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:07:26,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:07:26,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:07:26,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:07:26,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:07:26,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:07:26,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:07:26,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:07:26,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:07:26,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:07:26,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:07:26,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:07:26,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:07:26,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:07:26,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:07:26,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:07:26,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:07:26,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:07:26,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:07:26,218 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 13:07:26,232 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:07:26,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:07:26,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:07:26,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:07:26,234 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:07:26,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:07:26,234 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:07:26,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:07:26,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:07:26,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:07:26,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:07:26,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:07:26,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:07:26,236 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:07:26,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:07:26,236 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:07:26,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:07:26,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:07:26,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:07:26,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:07:26,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:07:26,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:07:26,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:07:26,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:07:26,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:07:26,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:07:26,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:07:26,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:07:26,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:07:26,266 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:07:26,278 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:07:26,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:07:26,283 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:07:26,283 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:07:26,284 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c [2019-09-20 13:07:26,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c88980c88/96fada1cccde4b60ba6fe47e52ebeb19/FLAG601ad1e22 [2019-09-20 13:07:26,843 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:07:26,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c [2019-09-20 13:07:26,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c88980c88/96fada1cccde4b60ba6fe47e52ebeb19/FLAG601ad1e22 [2019-09-20 13:07:27,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c88980c88/96fada1cccde4b60ba6fe47e52ebeb19 [2019-09-20 13:07:27,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:07:27,120 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:07:27,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:27,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:07:27,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:07:27,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:27" (1/1) ... [2019-09-20 13:07:27,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a55c8bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:27, skipping insertion in model container [2019-09-20 13:07:27,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:27" (1/1) ... [2019-09-20 13:07:27,135 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:07:27,190 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:07:27,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:27,640 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:07:27,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:27,767 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:07:27,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:27 WrapperNode [2019-09-20 13:07:27,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:27,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:07:27,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:07:27,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:07:27,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:27" (1/1) ... [2019-09-20 13:07:27,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:27" (1/1) ... [2019-09-20 13:07:27,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:27" (1/1) ... [2019-09-20 13:07:27,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:27" (1/1) ... [2019-09-20 13:07:27,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:27" (1/1) ... [2019-09-20 13:07:27,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:27" (1/1) ... [2019-09-20 13:07:27,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:27" (1/1) ... [2019-09-20 13:07:27,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:07:27,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:07:27,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:07:27,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:07:27,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:27" (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 13:07:27,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:07:27,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:07:27,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:27,927 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:07:27,928 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:07:27,928 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:07:27,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:07:27,928 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:07:27,928 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:07:27,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:07:27,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:07:27,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:27,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:27,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:27,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:07:27,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:07:27,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:07:27,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:27,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:27,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:27,935 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:07:27,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:07:27,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:07:27,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:07:27,936 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:07:27,937 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:07:27,937 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:07:27,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:07:27,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:07:27,938 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:07:27,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:07:27,938 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:07:27,938 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:07:27,938 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:07:27,939 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:07:27,939 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:07:27,939 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:07:27,939 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:07:27,939 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:07:27,940 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:07:27,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:07:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:07:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:07:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:07:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:07:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:07:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:07:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:07:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:07:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:07:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:07:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:07:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:07:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:07:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:07:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:07:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:07:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:07:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:07:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:07:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:07:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:07:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:07:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:07:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:07:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:07:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:07:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:07:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:07:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:07:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:07:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:07:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:07:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:07:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:07:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:07:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:07:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:07:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:07:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:07:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:07:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:07:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:07:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:07:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:07:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:07:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:07:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:07:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:07:29,180 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:07:29,181 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:07:29,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:29 BoogieIcfgContainer [2019-09-20 13:07:29,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:07:29,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:07:29,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:07:29,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:07:29,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:07:27" (1/3) ... [2019-09-20 13:07:29,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9cf57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:29, skipping insertion in model container [2019-09-20 13:07:29,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:27" (2/3) ... [2019-09-20 13:07:29,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9cf57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:29, skipping insertion in model container [2019-09-20 13:07:29,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:29" (3/3) ... [2019-09-20 13:07:29,191 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product45.cil.c [2019-09-20 13:07:29,201 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:07:29,211 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:07:29,226 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:07:29,251 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:07:29,251 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:07:29,251 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:07:29,252 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:07:29,252 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:07:29,252 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:07:29,252 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:07:29,252 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:07:29,253 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:07:29,274 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2019-09-20 13:07:29,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:07:29,283 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:29,285 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 13:07:29,287 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:29,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:29,291 INFO L82 PathProgramCache]: Analyzing trace with hash -587014934, now seen corresponding path program 1 times [2019-09-20 13:07:29,293 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:29,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:29,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:29,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:29,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:29,691 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 13:07:29,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:29,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:07:29,698 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:07:29,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:07:29,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:29,716 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 2 states. [2019-09-20 13:07:29,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:29,797 INFO L93 Difference]: Finished difference Result 282 states and 349 transitions. [2019-09-20 13:07:29,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:07:29,806 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:07:29,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:29,823 INFO L225 Difference]: With dead ends: 282 [2019-09-20 13:07:29,824 INFO L226 Difference]: Without dead ends: 143 [2019-09-20 13:07:29,831 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 13:07:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2019-09-20 13:07:29,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2019-09-20 13:07:29,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-09-20 13:07:29,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2019-09-20 13:07:29,914 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 59 [2019-09-20 13:07:29,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:29,915 INFO L475 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2019-09-20 13:07:29,915 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:07:29,915 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2019-09-20 13:07:29,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-20 13:07:29,926 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:29,927 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 13:07:29,927 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:29,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:29,928 INFO L82 PathProgramCache]: Analyzing trace with hash 272490530, now seen corresponding path program 1 times [2019-09-20 13:07:29,928 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:29,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:29,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:29,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:29,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:30,145 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 13:07:30,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:30,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:30,148 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:30,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:30,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:30,149 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 7 states. [2019-09-20 13:07:30,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:30,503 INFO L93 Difference]: Finished difference Result 258 states and 311 transitions. [2019-09-20 13:07:30,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:07:30,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-20 13:07:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:30,506 INFO L225 Difference]: With dead ends: 258 [2019-09-20 13:07:30,506 INFO L226 Difference]: Without dead ends: 143 [2019-09-20 13:07:30,508 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 13:07:30,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2019-09-20 13:07:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2019-09-20 13:07:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-09-20 13:07:30,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2019-09-20 13:07:30,529 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 64 [2019-09-20 13:07:30,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:30,533 INFO L475 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2019-09-20 13:07:30,533 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:30,533 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2019-09-20 13:07:30,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-09-20 13:07:30,537 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:30,537 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] [2019-09-20 13:07:30,538 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:30,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:30,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1080536843, now seen corresponding path program 1 times [2019-09-20 13:07:30,538 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:30,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:30,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:30,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:30,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:30,706 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 13:07:30,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:30,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:07:30,707 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:07:30,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:07:30,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:07:30,708 INFO L87 Difference]: Start difference. First operand 143 states and 167 transitions. Second operand 5 states. [2019-09-20 13:07:31,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:31,326 INFO L93 Difference]: Finished difference Result 407 states and 516 transitions. [2019-09-20 13:07:31,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:07:31,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2019-09-20 13:07:31,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:31,332 INFO L225 Difference]: With dead ends: 407 [2019-09-20 13:07:31,332 INFO L226 Difference]: Without dead ends: 292 [2019-09-20 13:07:31,338 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:31,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2019-09-20 13:07:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 257. [2019-09-20 13:07:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2019-09-20 13:07:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 306 transitions. [2019-09-20 13:07:31,380 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 306 transitions. Word has length 77 [2019-09-20 13:07:31,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:31,381 INFO L475 AbstractCegarLoop]: Abstraction has 257 states and 306 transitions. [2019-09-20 13:07:31,381 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:07:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 306 transitions. [2019-09-20 13:07:31,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-09-20 13:07:31,383 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:31,383 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] [2019-09-20 13:07:31,383 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:31,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:31,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1912690952, now seen corresponding path program 1 times [2019-09-20 13:07:31,384 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:31,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:31,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:31,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:31,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:31,493 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 13:07:31,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:31,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:31,494 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:31,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:31,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:31,495 INFO L87 Difference]: Start difference. First operand 257 states and 306 transitions. Second operand 7 states. [2019-09-20 13:07:32,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:32,179 INFO L93 Difference]: Finished difference Result 510 states and 633 transitions. [2019-09-20 13:07:32,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:07:32,179 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2019-09-20 13:07:32,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:32,183 INFO L225 Difference]: With dead ends: 510 [2019-09-20 13:07:32,183 INFO L226 Difference]: Without dead ends: 281 [2019-09-20 13:07:32,184 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:07:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2019-09-20 13:07:32,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 256. [2019-09-20 13:07:32,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2019-09-20 13:07:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 303 transitions. [2019-09-20 13:07:32,220 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 303 transitions. Word has length 91 [2019-09-20 13:07:32,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:32,220 INFO L475 AbstractCegarLoop]: Abstraction has 256 states and 303 transitions. [2019-09-20 13:07:32,221 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 303 transitions. [2019-09-20 13:07:32,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:07:32,225 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:32,227 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, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:32,228 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:32,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:32,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1624249196, now seen corresponding path program 1 times [2019-09-20 13:07:32,228 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:32,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:32,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:32,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:32,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:32,303 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 13:07:32,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:32,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:07:32,305 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:07:32,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:07:32,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:07:32,305 INFO L87 Difference]: Start difference. First operand 256 states and 303 transitions. Second operand 6 states. [2019-09-20 13:07:32,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:32,342 INFO L93 Difference]: Finished difference Result 491 states and 602 transitions. [2019-09-20 13:07:32,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:07:32,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2019-09-20 13:07:32,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:32,346 INFO L225 Difference]: With dead ends: 491 [2019-09-20 13:07:32,346 INFO L226 Difference]: Without dead ends: 263 [2019-09-20 13:07:32,347 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 13:07:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2019-09-20 13:07:32,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2019-09-20 13:07:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2019-09-20 13:07:32,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 308 transitions. [2019-09-20 13:07:32,365 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 308 transitions. Word has length 107 [2019-09-20 13:07:32,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:32,366 INFO L475 AbstractCegarLoop]: Abstraction has 261 states and 308 transitions. [2019-09-20 13:07:32,366 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:07:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 308 transitions. [2019-09-20 13:07:32,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:07:32,367 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:32,368 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, 1, 1] [2019-09-20 13:07:32,368 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:32,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:32,368 INFO L82 PathProgramCache]: Analyzing trace with hash -674621736, now seen corresponding path program 1 times [2019-09-20 13:07:32,368 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:32,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:32,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:32,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:32,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:32,420 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 13:07:32,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:32,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:07:32,421 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:07:32,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:07:32,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:32,422 INFO L87 Difference]: Start difference. First operand 261 states and 308 transitions. Second operand 3 states. [2019-09-20 13:07:32,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:32,436 INFO L93 Difference]: Finished difference Result 428 states and 487 transitions. [2019-09-20 13:07:32,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:07:32,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-09-20 13:07:32,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:32,439 INFO L225 Difference]: With dead ends: 428 [2019-09-20 13:07:32,439 INFO L226 Difference]: Without dead ends: 231 [2019-09-20 13:07:32,440 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 13:07:32,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2019-09-20 13:07:32,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2019-09-20 13:07:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2019-09-20 13:07:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2019-09-20 13:07:32,453 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 103 [2019-09-20 13:07:32,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:32,453 INFO L475 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2019-09-20 13:07:32,453 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:07:32,454 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2019-09-20 13:07:32,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:07:32,455 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:32,455 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, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:32,455 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:32,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:32,456 INFO L82 PathProgramCache]: Analyzing trace with hash 304023506, now seen corresponding path program 1 times [2019-09-20 13:07:32,456 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:32,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:32,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:32,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:32,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:32,535 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 13:07:32,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:32,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:07:32,536 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:07:32,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:07:32,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:32,536 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand 8 states. [2019-09-20 13:07:32,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:32,602 INFO L93 Difference]: Finished difference Result 441 states and 511 transitions. [2019-09-20 13:07:32,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:07:32,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-09-20 13:07:32,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:32,604 INFO L225 Difference]: With dead ends: 441 [2019-09-20 13:07:32,604 INFO L226 Difference]: Without dead ends: 238 [2019-09-20 13:07:32,605 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 13:07:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2019-09-20 13:07:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 235. [2019-09-20 13:07:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2019-09-20 13:07:32,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 265 transitions. [2019-09-20 13:07:32,619 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 265 transitions. Word has length 107 [2019-09-20 13:07:32,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:32,619 INFO L475 AbstractCegarLoop]: Abstraction has 235 states and 265 transitions. [2019-09-20 13:07:32,619 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:07:32,619 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 265 transitions. [2019-09-20 13:07:32,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:07:32,621 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:32,621 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, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:32,621 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:32,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:32,622 INFO L82 PathProgramCache]: Analyzing trace with hash 63483377, now seen corresponding path program 1 times [2019-09-20 13:07:32,622 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:32,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:32,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:32,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:32,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:32,706 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 13:07:32,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:32,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:07:32,707 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:07:32,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:07:32,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:32,708 INFO L87 Difference]: Start difference. First operand 235 states and 265 transitions. Second operand 4 states. [2019-09-20 13:07:32,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:32,915 INFO L93 Difference]: Finished difference Result 667 states and 790 transitions. [2019-09-20 13:07:32,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:07:32,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2019-09-20 13:07:32,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:32,919 INFO L225 Difference]: With dead ends: 667 [2019-09-20 13:07:32,919 INFO L226 Difference]: Without dead ends: 460 [2019-09-20 13:07:32,921 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 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 13:07:32,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2019-09-20 13:07:32,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 451. [2019-09-20 13:07:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2019-09-20 13:07:32,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 524 transitions. [2019-09-20 13:07:32,948 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 524 transitions. Word has length 107 [2019-09-20 13:07:32,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:32,949 INFO L475 AbstractCegarLoop]: Abstraction has 451 states and 524 transitions. [2019-09-20 13:07:32,949 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:07:32,949 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 524 transitions. [2019-09-20 13:07:32,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-20 13:07:32,953 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:32,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:32,953 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:32,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:32,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1148604343, now seen corresponding path program 1 times [2019-09-20 13:07:32,954 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:32,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:32,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:32,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:32,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:33,166 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 13:07:33,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:33,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:07:33,167 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:07:33,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:07:33,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:07:33,168 INFO L87 Difference]: Start difference. First operand 451 states and 524 transitions. Second operand 9 states. [2019-09-20 13:07:34,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:34,148 INFO L93 Difference]: Finished difference Result 1184 states and 1440 transitions. [2019-09-20 13:07:34,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:34,148 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-09-20 13:07:34,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:34,154 INFO L225 Difference]: With dead ends: 1184 [2019-09-20 13:07:34,155 INFO L226 Difference]: Without dead ends: 829 [2019-09-20 13:07:34,156 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:34,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2019-09-20 13:07:34,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 756. [2019-09-20 13:07:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2019-09-20 13:07:34,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 868 transitions. [2019-09-20 13:07:34,203 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 868 transitions. Word has length 111 [2019-09-20 13:07:34,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:34,204 INFO L475 AbstractCegarLoop]: Abstraction has 756 states and 868 transitions. [2019-09-20 13:07:34,204 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:07:34,204 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 868 transitions. [2019-09-20 13:07:34,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-09-20 13:07:34,206 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:34,207 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, 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] [2019-09-20 13:07:34,207 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:34,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:34,207 INFO L82 PathProgramCache]: Analyzing trace with hash 490171745, now seen corresponding path program 1 times [2019-09-20 13:07:34,208 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:34,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:34,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:34,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:34,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:34,358 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-20 13:07:34,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:34,359 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 13:07:34,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:34,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:07:34,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 35 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:07:34,805 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:34,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:07:34,807 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:07:34,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:07:34,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:07:34,808 INFO L87 Difference]: Start difference. First operand 756 states and 868 transitions. Second operand 16 states. [2019-09-20 13:07:36,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:36,111 INFO L93 Difference]: Finished difference Result 1684 states and 2015 transitions. [2019-09-20 13:07:36,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-20 13:07:36,111 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 170 [2019-09-20 13:07:36,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:36,117 INFO L225 Difference]: With dead ends: 1684 [2019-09-20 13:07:36,117 INFO L226 Difference]: Without dead ends: 1022 [2019-09-20 13:07:36,120 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2019-09-20 13:07:36,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2019-09-20 13:07:36,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 902. [2019-09-20 13:07:36,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2019-09-20 13:07:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1048 transitions. [2019-09-20 13:07:36,196 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1048 transitions. Word has length 170 [2019-09-20 13:07:36,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:36,197 INFO L475 AbstractCegarLoop]: Abstraction has 902 states and 1048 transitions. [2019-09-20 13:07:36,197 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:07:36,197 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1048 transitions. [2019-09-20 13:07:36,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2019-09-20 13:07:36,207 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:36,208 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:36,208 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:36,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:36,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1064646135, now seen corresponding path program 1 times [2019-09-20 13:07:36,209 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:36,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:36,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:36,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:36,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:36,489 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 76 proven. 7 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2019-09-20 13:07:36,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:36,489 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 13:07:36,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:36,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:07:36,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 226 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-09-20 13:07:37,045 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:37,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-20 13:07:37,047 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:07:37,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:07:37,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:37,047 INFO L87 Difference]: Start difference. First operand 902 states and 1048 transitions. Second operand 19 states. [2019-09-20 13:07:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:43,197 INFO L93 Difference]: Finished difference Result 3284 states and 4589 transitions. [2019-09-20 13:07:43,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-20 13:07:43,201 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 299 [2019-09-20 13:07:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:43,217 INFO L225 Difference]: With dead ends: 3284 [2019-09-20 13:07:43,217 INFO L226 Difference]: Without dead ends: 2418 [2019-09-20 13:07:43,224 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=607, Invalid=3815, Unknown=0, NotChecked=0, Total=4422 [2019-09-20 13:07:43,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2019-09-20 13:07:43,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 1703. [2019-09-20 13:07:43,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1703 states. [2019-09-20 13:07:43,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 1914 transitions. [2019-09-20 13:07:43,361 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 1914 transitions. Word has length 299 [2019-09-20 13:07:43,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:43,364 INFO L475 AbstractCegarLoop]: Abstraction has 1703 states and 1914 transitions. [2019-09-20 13:07:43,364 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:07:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 1914 transitions. [2019-09-20 13:07:43,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2019-09-20 13:07:43,372 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:43,373 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:43,373 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:43,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:43,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1577402443, now seen corresponding path program 1 times [2019-09-20 13:07:43,374 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:43,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:43,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:43,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:43,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 93 proven. 55 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2019-09-20 13:07:43,648 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:43,648 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 13:07:43,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:43,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-20 13:07:44,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 264 proven. 16 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-09-20 13:07:44,237 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:44,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:07:44,239 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:07:44,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:07:44,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:07:44,240 INFO L87 Difference]: Start difference. First operand 1703 states and 1914 transitions. Second operand 20 states. [2019-09-20 13:07:46,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:46,058 INFO L93 Difference]: Finished difference Result 3222 states and 3639 transitions. [2019-09-20 13:07:46,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:46,058 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 319 [2019-09-20 13:07:46,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:46,071 INFO L225 Difference]: With dead ends: 3222 [2019-09-20 13:07:46,072 INFO L226 Difference]: Without dead ends: 1707 [2019-09-20 13:07:46,076 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 13:07:46,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2019-09-20 13:07:46,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1703. [2019-09-20 13:07:46,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1703 states. [2019-09-20 13:07:46,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 1909 transitions. [2019-09-20 13:07:46,192 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 1909 transitions. Word has length 319 [2019-09-20 13:07:46,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:46,192 INFO L475 AbstractCegarLoop]: Abstraction has 1703 states and 1909 transitions. [2019-09-20 13:07:46,192 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:07:46,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 1909 transitions. [2019-09-20 13:07:46,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-09-20 13:07:46,205 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:46,205 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:46,206 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:46,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:46,206 INFO L82 PathProgramCache]: Analyzing trace with hash 13026967, now seen corresponding path program 1 times [2019-09-20 13:07:46,206 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:46,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:46,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:46,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:46,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2019-09-20 13:07:46,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:46,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-09-20 13:07:46,466 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:07:46,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:07:46,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:07:46,467 INFO L87 Difference]: Start difference. First operand 1703 states and 1909 transitions. Second operand 13 states. [2019-09-20 13:07:47,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:47,564 INFO L93 Difference]: Finished difference Result 3120 states and 3523 transitions. [2019-09-20 13:07:47,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-20 13:07:47,564 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 320 [2019-09-20 13:07:47,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:47,572 INFO L225 Difference]: With dead ends: 3120 [2019-09-20 13:07:47,573 INFO L226 Difference]: Without dead ends: 1605 [2019-09-20 13:07:47,577 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2019-09-20 13:07:47,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2019-09-20 13:07:47,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1576. [2019-09-20 13:07:47,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2019-09-20 13:07:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1758 transitions. [2019-09-20 13:07:47,665 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1758 transitions. Word has length 320 [2019-09-20 13:07:47,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:47,667 INFO L475 AbstractCegarLoop]: Abstraction has 1576 states and 1758 transitions. [2019-09-20 13:07:47,667 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:07:47,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1758 transitions. [2019-09-20 13:07:47,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2019-09-20 13:07:47,675 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:47,675 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, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-09-20 13:07:47,675 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:47,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:47,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1735967491, now seen corresponding path program 1 times [2019-09-20 13:07:47,676 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:47,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:47,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:47,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:47,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 91 proven. 44 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-09-20 13:07:47,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:47,929 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 13:07:47,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:48,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:07:48,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 193 proven. 16 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:07:48,366 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:48,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:07:48,369 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:07:48,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:07:48,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:07:48,370 INFO L87 Difference]: Start difference. First operand 1576 states and 1758 transitions. Second operand 14 states. [2019-09-20 13:07:50,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:50,400 INFO L93 Difference]: Finished difference Result 3401 states and 4110 transitions. [2019-09-20 13:07:50,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:07:50,401 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 324 [2019-09-20 13:07:50,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:50,415 INFO L225 Difference]: With dead ends: 3401 [2019-09-20 13:07:50,415 INFO L226 Difference]: Without dead ends: 2525 [2019-09-20 13:07:50,419 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 343 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:07:50,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2019-09-20 13:07:50,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 1966. [2019-09-20 13:07:50,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2019-09-20 13:07:50,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2203 transitions. [2019-09-20 13:07:50,540 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2203 transitions. Word has length 324 [2019-09-20 13:07:50,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:50,541 INFO L475 AbstractCegarLoop]: Abstraction has 1966 states and 2203 transitions. [2019-09-20 13:07:50,541 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:07:50,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2203 transitions. [2019-09-20 13:07:50,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2019-09-20 13:07:50,548 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:50,549 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, 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, 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] [2019-09-20 13:07:50,549 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:50,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:50,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1218192947, now seen corresponding path program 1 times [2019-09-20 13:07:50,550 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:50,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:50,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:50,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:50,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 171 proven. 23 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2019-09-20 13:07:50,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:50,932 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 13:07:51,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:51,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 42 conjunts are in the unsatisfiable core [2019-09-20 13:07:51,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 243 proven. 49 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2019-09-20 13:07:51,565 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:51,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 20 [2019-09-20 13:07:51,567 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:07:51,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:07:51,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:07:51,568 INFO L87 Difference]: Start difference. First operand 1966 states and 2203 transitions. Second operand 20 states. [2019-09-20 13:07:53,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:53,737 INFO L93 Difference]: Finished difference Result 3174 states and 3578 transitions. [2019-09-20 13:07:53,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-20 13:07:53,737 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 392 [2019-09-20 13:07:53,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:53,739 INFO L225 Difference]: With dead ends: 3174 [2019-09-20 13:07:53,739 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:07:53,749 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 393 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=906, Unknown=0, NotChecked=0, Total=1122 [2019-09-20 13:07:53,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:07:53,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:07:53,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:07:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:07:53,751 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 392 [2019-09-20 13:07:53,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:53,752 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:07:53,752 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:07:53,752 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:07:53,752 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:07:53,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 13:07:54,328 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 138 [2019-09-20 13:07:54,838 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 183 [2019-09-20 13:07:55,991 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 113 [2019-09-20 13:07:56,752 WARN L191 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 43 [2019-09-20 13:07:57,665 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44 [2019-09-20 13:07:58,308 WARN L191 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 50 [2019-09-20 13:07:58,687 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 37