/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:24:38,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:24:38,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:24:38,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:24:38,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:24:38,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:24:38,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:24:38,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:24:38,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:24:38,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:24:38,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:24:38,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:24:38,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:24:38,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:24:38,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:24:38,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:24:38,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:24:38,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:24:38,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:24:38,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:24:38,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:24:38,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:24:38,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:24:38,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:24:38,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:24:38,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:24:38,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:24:38,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:24:38,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:24:38,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:24:38,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:24:38,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:24:38,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:24:38,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:24:38,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:24:38,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:24:38,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:24:38,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:24:38,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:24:38,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:24:38,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:24:38,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:24:38,232 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:24:38,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:24:38,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:24:38,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:24:38,235 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:24:38,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:24:38,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:24:38,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:24:38,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:24:38,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:24:38,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:24:38,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:24:38,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:24:38,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:24:38,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:24:38,238 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:24:38,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:24:38,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:24:38,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:24:38,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:24:38,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:24:38,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:24:38,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:24:38,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:24:38,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:24:38,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:24:38,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:24:38,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:24:38,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:24:38,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 10:24:38,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:24:38,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:24:38,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:24:38,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:24:38,541 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:24:38,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2020-08-18 10:24:38,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/001f5d588/26abadd056c043e396d02888ccb8f46a/FLAG2f9bf447e [2020-08-18 10:24:39,081 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:24:39,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2020-08-18 10:24:39,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/001f5d588/26abadd056c043e396d02888ccb8f46a/FLAG2f9bf447e [2020-08-18 10:24:39,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/001f5d588/26abadd056c043e396d02888ccb8f46a [2020-08-18 10:24:39,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:24:39,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:24:39,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:24:39,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:24:39,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:24:39,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:24:39" (1/1) ... [2020-08-18 10:24:39,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8168f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:39, skipping insertion in model container [2020-08-18 10:24:39,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:24:39" (1/1) ... [2020-08-18 10:24:39,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:24:39,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:24:39,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:24:39,935 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:24:40,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:24:40,048 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:24:40,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:40 WrapperNode [2020-08-18 10:24:40,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:24:40,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:24:40,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:24:40,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:24:40,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:40" (1/1) ... [2020-08-18 10:24:40,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:40" (1/1) ... [2020-08-18 10:24:40,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:40" (1/1) ... [2020-08-18 10:24:40,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:40" (1/1) ... [2020-08-18 10:24:40,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:40" (1/1) ... [2020-08-18 10:24:40,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:40" (1/1) ... [2020-08-18 10:24:40,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:40" (1/1) ... [2020-08-18 10:24:40,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:24:40,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:24:40,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:24:40,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:24:40,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:24:40,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:24:40,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:24:40,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:24:40,197 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:24:40,197 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:24:40,198 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:24:40,198 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 10:24:40,198 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:24:40,198 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 10:24:40,198 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:24:40,198 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:24:40,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:24:40,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:24:40,199 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:24:40,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:24:40,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:24:40,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:24:40,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:24:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:24:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:24:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:24:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:24:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 10:24:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:24:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:24:40,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:24:40,201 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:24:40,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:24:40,201 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:24:40,201 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:24:40,201 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:24:40,201 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:24:40,202 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:24:40,202 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:24:40,202 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:24:40,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:24:40,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:24:40,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:24:40,203 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:24:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:24:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:24:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:24:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:24:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:24:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:24:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:24:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:24:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:24:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:24:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:24:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:24:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:24:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:24:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:24:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:24:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 10:24:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:24:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:24:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:24:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 10:24:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:24:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 10:24:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:24:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:24:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:24:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:24:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:24:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:24:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:24:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:24:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:24:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:24:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:24:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:24:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:24:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:24:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:24:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:24:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:24:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:24:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:24:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:24:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:24:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:24:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:24:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:24:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:24:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:24:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:24:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:24:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:24:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:24:41,325 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:24:41,326 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:24:41,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:24:41 BoogieIcfgContainer [2020-08-18 10:24:41,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:24:41,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:24:41,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:24:41,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:24:41,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:24:39" (1/3) ... [2020-08-18 10:24:41,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af01698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:24:41, skipping insertion in model container [2020-08-18 10:24:41,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:40" (2/3) ... [2020-08-18 10:24:41,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af01698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:24:41, skipping insertion in model container [2020-08-18 10:24:41,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:24:41" (3/3) ... [2020-08-18 10:24:41,343 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2020-08-18 10:24:41,354 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:24:41,364 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:24:41,378 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:24:41,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:24:41,399 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:24:41,399 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:24:41,399 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:24:41,400 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:24:41,400 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:24:41,400 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:24:41,400 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:24:41,420 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-18 10:24:41,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 10:24:41,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:41,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:41,430 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:41,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:41,435 INFO L82 PathProgramCache]: Analyzing trace with hash 261309835, now seen corresponding path program 1 times [2020-08-18 10:24:41,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:41,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476166340] [2020-08-18 10:24:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,096 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:42,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:24:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:24:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:42,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476166340] [2020-08-18 10:24:42,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:42,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:24:42,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107138594] [2020-08-18 10:24:42,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:24:42,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:42,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:24:42,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:24:42,212 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-18 10:24:43,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:43,402 INFO L93 Difference]: Finished difference Result 309 states and 402 transitions. [2020-08-18 10:24:43,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:24:43,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 10:24:43,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:43,420 INFO L225 Difference]: With dead ends: 309 [2020-08-18 10:24:43,420 INFO L226 Difference]: Without dead ends: 167 [2020-08-18 10:24:43,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:24:43,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-18 10:24:43,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 133. [2020-08-18 10:24:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 10:24:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2020-08-18 10:24:43,522 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 46 [2020-08-18 10:24:43,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:43,523 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2020-08-18 10:24:43,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:24:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2020-08-18 10:24:43,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 10:24:43,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:43,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:43,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:24:43,530 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:43,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:43,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1021856254, now seen corresponding path program 1 times [2020-08-18 10:24:43,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:43,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780767280] [2020-08-18 10:24:43,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:43,911 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:43,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:43,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:43,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:43,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:43,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:43,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:24:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:43,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:24:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:43,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780767280] [2020-08-18 10:24:43,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:43,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:24:43,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004200474] [2020-08-18 10:24:43,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:24:43,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:43,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:24:43,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:24:43,964 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 4 states. [2020-08-18 10:24:44,373 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:45,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:45,297 INFO L93 Difference]: Finished difference Result 242 states and 293 transitions. [2020-08-18 10:24:45,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:24:45,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 10:24:45,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:45,300 INFO L225 Difference]: With dead ends: 242 [2020-08-18 10:24:45,301 INFO L226 Difference]: Without dead ends: 151 [2020-08-18 10:24:45,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:24:45,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-18 10:24:45,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 124. [2020-08-18 10:24:45,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 10:24:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-08-18 10:24:45,342 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 47 [2020-08-18 10:24:45,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:45,343 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-08-18 10:24:45,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:24:45,343 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-08-18 10:24:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 10:24:45,345 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:45,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:45,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:24:45,346 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:45,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:45,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1136847733, now seen corresponding path program 1 times [2020-08-18 10:24:45,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:45,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85149004] [2020-08-18 10:24:45,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:45,658 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:45,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:45,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:45,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:45,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:45,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:45,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:24:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:45,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:24:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:45,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85149004] [2020-08-18 10:24:45,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:45,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:24:45,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551604268] [2020-08-18 10:24:45,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:24:45,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:45,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:24:45,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:24:45,790 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 8 states. [2020-08-18 10:24:46,137 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:46,479 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:46,735 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:46,976 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:48,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:48,215 INFO L93 Difference]: Finished difference Result 251 states and 307 transitions. [2020-08-18 10:24:48,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 10:24:48,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 10:24:48,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:48,219 INFO L225 Difference]: With dead ends: 251 [2020-08-18 10:24:48,219 INFO L226 Difference]: Without dead ends: 151 [2020-08-18 10:24:48,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:24:48,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-18 10:24:48,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 124. [2020-08-18 10:24:48,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 10:24:48,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2020-08-18 10:24:48,297 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 51 [2020-08-18 10:24:48,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:48,298 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2020-08-18 10:24:48,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:24:48,298 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2020-08-18 10:24:48,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 10:24:48,300 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:48,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:48,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:24:48,301 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:48,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:48,302 INFO L82 PathProgramCache]: Analyzing trace with hash -629251764, now seen corresponding path program 1 times [2020-08-18 10:24:48,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:48,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423435716] [2020-08-18 10:24:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:48,625 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:48,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:48,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:48,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:48,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:48,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:48,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:24:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:48,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:48,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:48,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:24:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:48,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 10:24:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:48,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423435716] [2020-08-18 10:24:48,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:48,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:24:48,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303238366] [2020-08-18 10:24:48,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:24:48,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:48,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:24:48,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:24:48,714 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 6 states. [2020-08-18 10:24:49,052 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:50,276 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:50,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:50,938 INFO L93 Difference]: Finished difference Result 351 states and 430 transitions. [2020-08-18 10:24:50,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:24:50,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-18 10:24:50,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:50,942 INFO L225 Difference]: With dead ends: 351 [2020-08-18 10:24:50,943 INFO L226 Difference]: Without dead ends: 251 [2020-08-18 10:24:50,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:24:50,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-18 10:24:50,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 210. [2020-08-18 10:24:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-18 10:24:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 237 transitions. [2020-08-18 10:24:50,997 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 237 transitions. Word has length 64 [2020-08-18 10:24:50,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:50,998 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 237 transitions. [2020-08-18 10:24:50,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:24:50,998 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 237 transitions. [2020-08-18 10:24:50,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 10:24:51,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:51,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:51,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:24:51,000 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:51,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:51,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1171048631, now seen corresponding path program 1 times [2020-08-18 10:24:51,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:51,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113621187] [2020-08-18 10:24:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,287 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:51,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:24:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:24:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 10:24:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:24:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:51,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113621187] [2020-08-18 10:24:51,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:51,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:24:51,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783517556] [2020-08-18 10:24:51,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:24:51,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:51,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:24:51,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:24:51,400 INFO L87 Difference]: Start difference. First operand 210 states and 237 transitions. Second operand 12 states. [2020-08-18 10:24:51,851 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:52,179 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:52,418 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:52,660 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:53,150 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:54,123 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:54,396 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:54,660 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:54,912 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:24:55,221 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:55,496 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:56,820 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:57,192 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:57,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:57,777 INFO L93 Difference]: Finished difference Result 739 states and 942 transitions. [2020-08-18 10:24:57,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 10:24:57,778 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-18 10:24:57,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:57,783 INFO L225 Difference]: With dead ends: 739 [2020-08-18 10:24:57,784 INFO L226 Difference]: Without dead ends: 553 [2020-08-18 10:24:57,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 10:24:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-08-18 10:24:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 495. [2020-08-18 10:24:57,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-18 10:24:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 577 transitions. [2020-08-18 10:24:57,888 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 577 transitions. Word has length 78 [2020-08-18 10:24:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:57,888 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 577 transitions. [2020-08-18 10:24:57,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:24:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 577 transitions. [2020-08-18 10:24:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 10:24:57,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:57,893 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 10:24:57,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:24:57,894 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:57,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:57,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2053602902, now seen corresponding path program 1 times [2020-08-18 10:24:57,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:57,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363738780] [2020-08-18 10:24:57,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,186 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:24:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:24:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:24:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 10:24:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 10:24:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 10:24:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:24:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 10:24:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 10:24:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 10:24:58,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363738780] [2020-08-18 10:24:58,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:24:58,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 10:24:58,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572793090] [2020-08-18 10:24:58,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 10:24:58,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:58,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 10:24:58,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:24:58,417 INFO L87 Difference]: Start difference. First operand 495 states and 577 transitions. Second operand 11 states. [2020-08-18 10:24:58,942 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 10:24:59,443 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:01,186 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 10:25:02,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:02,717 INFO L93 Difference]: Finished difference Result 964 states and 1200 transitions. [2020-08-18 10:25:02,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 10:25:02,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-18 10:25:02,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:02,723 INFO L225 Difference]: With dead ends: 964 [2020-08-18 10:25:02,724 INFO L226 Difference]: Without dead ends: 610 [2020-08-18 10:25:02,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-08-18 10:25:02,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-08-18 10:25:02,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 571. [2020-08-18 10:25:02,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-08-18 10:25:02,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 684 transitions. [2020-08-18 10:25:02,839 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 684 transitions. Word has length 136 [2020-08-18 10:25:02,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:02,839 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 684 transitions. [2020-08-18 10:25:02,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 10:25:02,840 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 684 transitions. [2020-08-18 10:25:02,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 10:25:02,842 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:02,843 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 10:25:02,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:25:02,843 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:02,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:02,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1503231471, now seen corresponding path program 1 times [2020-08-18 10:25:02,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:02,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906022648] [2020-08-18 10:25:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,101 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:03,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:25:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:25:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 10:25:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 10:25:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:25:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 10:25:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 10:25:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 10:25:03,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906022648] [2020-08-18 10:25:03,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:03,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:25:03,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552187383] [2020-08-18 10:25:03,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:25:03,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:03,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:25:03,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:25:03,281 INFO L87 Difference]: Start difference. First operand 571 states and 684 transitions. Second operand 10 states. [2020-08-18 10:25:04,140 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:04,400 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:25:04,677 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:04,899 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:05,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:05,984 INFO L93 Difference]: Finished difference Result 1175 states and 1478 transitions. [2020-08-18 10:25:05,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:25:05,985 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-08-18 10:25:05,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:05,990 INFO L225 Difference]: With dead ends: 1175 [2020-08-18 10:25:05,990 INFO L226 Difference]: Without dead ends: 628 [2020-08-18 10:25:05,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:25:05,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-08-18 10:25:06,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 586. [2020-08-18 10:25:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-08-18 10:25:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 701 transitions. [2020-08-18 10:25:06,145 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 701 transitions. Word has length 141 [2020-08-18 10:25:06,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:06,145 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 701 transitions. [2020-08-18 10:25:06,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:25:06,145 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 701 transitions. [2020-08-18 10:25:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 10:25:06,148 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:06,148 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 10:25:06,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:25:06,149 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:06,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1474731181, now seen corresponding path program 1 times [2020-08-18 10:25:06,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:06,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128368997] [2020-08-18 10:25:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,405 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:06,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:25:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:25:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 10:25:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 10:25:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:25:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 10:25:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 10:25:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 10:25:06,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128368997] [2020-08-18 10:25:06,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:06,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:25:06,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358360887] [2020-08-18 10:25:06,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:25:06,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:06,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:25:06,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:06,679 INFO L87 Difference]: Start difference. First operand 586 states and 701 transitions. Second operand 12 states. [2020-08-18 10:25:07,363 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:07,752 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:08,026 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:08,659 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:08,962 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:09,177 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:10,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:10,182 INFO L93 Difference]: Finished difference Result 1061 states and 1310 transitions. [2020-08-18 10:25:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:25:10,183 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 141 [2020-08-18 10:25:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:10,189 INFO L225 Difference]: With dead ends: 1061 [2020-08-18 10:25:10,189 INFO L226 Difference]: Without dead ends: 499 [2020-08-18 10:25:10,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:25:10,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-08-18 10:25:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 475. [2020-08-18 10:25:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-08-18 10:25:10,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 565 transitions. [2020-08-18 10:25:10,305 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 565 transitions. Word has length 141 [2020-08-18 10:25:10,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:10,305 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 565 transitions. [2020-08-18 10:25:10,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:25:10,305 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 565 transitions. [2020-08-18 10:25:10,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-18 10:25:10,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:10,308 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 10:25:10,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:25:10,308 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:10,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:10,309 INFO L82 PathProgramCache]: Analyzing trace with hash -339330766, now seen corresponding path program 1 times [2020-08-18 10:25:10,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:10,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775634285] [2020-08-18 10:25:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,576 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:10,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:25:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:25:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 10:25:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 10:25:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:25:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 10:25:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 10:25:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-18 10:25:10,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775634285] [2020-08-18 10:25:10,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:10,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 10:25:10,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44917747] [2020-08-18 10:25:10,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 10:25:10,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:10,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 10:25:10,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:25:10,928 INFO L87 Difference]: Start difference. First operand 475 states and 565 transitions. Second operand 15 states. [2020-08-18 10:25:11,357 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:12,032 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:12,895 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:13,206 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:13,480 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:13,754 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:14,068 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:14,335 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:14,908 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 10:25:15,407 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 10:25:16,245 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:16,478 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:16,768 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:17,017 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:17,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:17,759 INFO L93 Difference]: Finished difference Result 1250 states and 1546 transitions. [2020-08-18 10:25:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 10:25:17,763 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 145 [2020-08-18 10:25:17,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:17,769 INFO L225 Difference]: With dead ends: 1250 [2020-08-18 10:25:17,769 INFO L226 Difference]: Without dead ends: 799 [2020-08-18 10:25:17,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 10:25:17,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-08-18 10:25:17,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 760. [2020-08-18 10:25:17,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-08-18 10:25:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 889 transitions. [2020-08-18 10:25:17,913 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 889 transitions. Word has length 145 [2020-08-18 10:25:17,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:17,913 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 889 transitions. [2020-08-18 10:25:17,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 10:25:17,914 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 889 transitions. [2020-08-18 10:25:17,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 10:25:17,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:17,916 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:17,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:25:17,917 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:17,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:17,917 INFO L82 PathProgramCache]: Analyzing trace with hash 929993430, now seen corresponding path program 1 times [2020-08-18 10:25:17,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:17,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103649105] [2020-08-18 10:25:17,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,201 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:18,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:25:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:25:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 10:25:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 10:25:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 10:25:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:25:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 10:25:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 10:25:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-18 10:25:18,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103649105] [2020-08-18 10:25:18,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:18,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 10:25:18,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444262959] [2020-08-18 10:25:18,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 10:25:18,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:18,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 10:25:18,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:25:18,367 INFO L87 Difference]: Start difference. First operand 760 states and 889 transitions. Second operand 11 states. [2020-08-18 10:25:18,697 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:20,328 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:20,564 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:20,826 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:21,114 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:21,346 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:21,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:21,759 INFO L93 Difference]: Finished difference Result 888 states and 1101 transitions. [2020-08-18 10:25:21,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 10:25:21,760 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 149 [2020-08-18 10:25:21,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:21,766 INFO L225 Difference]: With dead ends: 888 [2020-08-18 10:25:21,767 INFO L226 Difference]: Without dead ends: 885 [2020-08-18 10:25:21,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-08-18 10:25:21,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-18 10:25:21,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 760. [2020-08-18 10:25:21,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-08-18 10:25:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 886 transitions. [2020-08-18 10:25:21,906 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 886 transitions. Word has length 149 [2020-08-18 10:25:21,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:21,906 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 886 transitions. [2020-08-18 10:25:21,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 10:25:21,907 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 886 transitions. [2020-08-18 10:25:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 10:25:21,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:21,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 10:25:21,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:25:21,910 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:21,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:21,910 INFO L82 PathProgramCache]: Analyzing trace with hash 432107741, now seen corresponding path program 1 times [2020-08-18 10:25:21,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:21,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825384518] [2020-08-18 10:25:21,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,256 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:22,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:25:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:25:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 10:25:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 10:25:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:25:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 10:25:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 10:25:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 10:25:22,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825384518] [2020-08-18 10:25:22,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:22,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:25:22,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172525018] [2020-08-18 10:25:22,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:25:22,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:22,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:25:22,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:22,459 INFO L87 Difference]: Start difference. First operand 760 states and 886 transitions. Second operand 12 states. [2020-08-18 10:25:22,808 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:23,359 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:24,135 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:24,398 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:24,630 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:24,849 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:25,111 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:25,378 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:26,532 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:27,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:27,217 INFO L93 Difference]: Finished difference Result 1786 states and 2220 transitions. [2020-08-18 10:25:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 10:25:27,224 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2020-08-18 10:25:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:27,232 INFO L225 Difference]: With dead ends: 1786 [2020-08-18 10:25:27,232 INFO L226 Difference]: Without dead ends: 1168 [2020-08-18 10:25:27,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-18 10:25:27,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-08-18 10:25:27,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1022. [2020-08-18 10:25:27,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2020-08-18 10:25:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1207 transitions. [2020-08-18 10:25:27,500 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1207 transitions. Word has length 149 [2020-08-18 10:25:27,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:27,501 INFO L479 AbstractCegarLoop]: Abstraction has 1022 states and 1207 transitions. [2020-08-18 10:25:27,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:25:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1207 transitions. [2020-08-18 10:25:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-18 10:25:27,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:27,506 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:27,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:25:27,506 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:27,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:27,507 INFO L82 PathProgramCache]: Analyzing trace with hash -706947900, now seen corresponding path program 2 times [2020-08-18 10:25:27,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:27,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685900135] [2020-08-18 10:25:27,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:25:27,599 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:25:27,599 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:25:27,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 10:25:27,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:25:27 BoogieIcfgContainer [2020-08-18 10:25:27,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:25:27,660 INFO L168 Benchmark]: Toolchain (without parser) took 48270.10 ms. Allocated memory was 141.6 MB in the beginning and 734.0 MB in the end (delta: 592.4 MB). Free memory was 102.4 MB in the beginning and 620.7 MB in the end (delta: -518.2 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:27,663 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 10:25:27,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.41 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 102.2 MB in the beginning and 172.6 MB in the end (delta: -70.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:27,667 INFO L168 Benchmark]: Boogie Preprocessor took 84.50 ms. Allocated memory is still 205.5 MB. Free memory was 172.6 MB in the beginning and 168.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:27,672 INFO L168 Benchmark]: RCFGBuilder took 1198.48 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 168.7 MB in the beginning and 190.0 MB in the end (delta: -21.3 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:27,673 INFO L168 Benchmark]: TraceAbstraction took 46322.15 ms. Allocated memory was 233.8 MB in the beginning and 734.0 MB in the end (delta: 500.2 MB). Free memory was 190.0 MB in the beginning and 620.7 MB in the end (delta: -430.7 MB). Peak memory consumption was 69.5 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:27,676 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 658.41 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 102.2 MB in the beginning and 172.6 MB in the end (delta: -70.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.50 ms. Allocated memory is still 205.5 MB. Free memory was 172.6 MB in the beginning and 168.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1198.48 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 168.7 MB in the beginning and 190.0 MB in the end (delta: -21.3 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46322.15 ms. Allocated memory was 233.8 MB in the beginning and 734.0 MB in the end (delta: 500.2 MB). Free memory was 190.0 MB in the beginning and 620.7 MB in the end (delta: -430.7 MB). Peak memory consumption was 69.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 317]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L117] int pumpRunning = 0; [L118] int systemActive = 1; [L491] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L715] int cleanupTimeShifts = 4; [L814] int waterLevel = 1; [L815] int methaneLevelCritical = 0; [L791] int retValue_acc ; [L792] int tmp ; [L796] FCALL select_helpers() [L797] FCALL select_features() [L798] CALL, EXPR valid_product() [L934] int retValue_acc ; [L937] retValue_acc = 1 [L938] return (retValue_acc); [L798] RET, EXPR valid_product() [L798] tmp = valid_product() [L800] COND TRUE \read(tmp) [L802] FCALL setup() [L803] CALL runTest() [L782] CALL test() [L45] int splverifierCounter ; [L46] int tmp ; [L47] int tmp___0 ; [L48] int tmp___1 ; [L49] int tmp___2 ; [L52] splverifierCounter = 0 [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND TRUE \read(tmp) [L66] CALL waterRise() [L832] COND TRUE waterLevel < 2 [L833] waterLevel = waterLevel + 1 [L66] RET waterRise() [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND FALSE !(\read(pumpRunning)) [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND FALSE !(\read(pumpRunning)) [L198] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND TRUE ! pumpRunning [L159] CALL, EXPR isHighWaterLevel() [L294] int retValue_acc ; [L295] int tmp ; [L296] int tmp___0 ; [L300] CALL, EXPR isHighWaterSensorDry() [L894] int retValue_acc ; [L897] COND FALSE !(waterLevel < 2) [L901] retValue_acc = 0 [L902] return (retValue_acc); [L300] RET, EXPR isHighWaterSensorDry() [L300] tmp = isHighWaterSensorDry() [L302] COND FALSE !(\read(tmp)) [L305] tmp___0 = 1 [L307] retValue_acc = tmp___0 [L308] return (retValue_acc); [L159] RET, EXPR isHighWaterLevel() [L159] tmp = isHighWaterLevel() [L161] COND TRUE \read(tmp) [L163] CALL activatePump() [L213] int tmp ; [L217] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L217] RET, EXPR isMethaneAlarm() [L217] tmp = isMethaneAlarm() [L219] COND FALSE !(\read(tmp)) [L223] CALL activatePump__wrappee__highWaterSensor() [L208] pumpRunning = 1 [L223] RET activatePump__wrappee__highWaterSensor() [L163] RET activatePump() [L198] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND FALSE !(tmp == 0) [L140] RET __utac_acc__Specification4_spec__1() [L97] RET timeShift() [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND FALSE !(\read(tmp)) [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND TRUE \read(pumpRunning) [L127] CALL lowerWaterLevel() [L820] COND TRUE waterLevel > 0 [L821] waterLevel = waterLevel - 1 [L127] RET lowerWaterLevel() [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND TRUE \read(pumpRunning) [L185] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L185] RET, EXPR isMethaneAlarm() [L185] tmp = isMethaneAlarm() [L187] COND FALSE !(\read(tmp)) [L193] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND FALSE !(! pumpRunning) [L172] FCALL processEnvironment__wrappee__base() [L193] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND FALSE !(tmp == 0) [L140] RET __utac_acc__Specification4_spec__1() [L97] RET timeShift() [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND FALSE !(\read(tmp)) [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND TRUE \read(pumpRunning) [L127] CALL lowerWaterLevel() [L820] COND TRUE waterLevel > 0 [L821] waterLevel = waterLevel - 1 [L127] RET lowerWaterLevel() [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND TRUE \read(pumpRunning) [L185] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L185] RET, EXPR isMethaneAlarm() [L185] tmp = isMethaneAlarm() [L187] COND FALSE !(\read(tmp)) [L193] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND FALSE !(! pumpRunning) [L172] FCALL processEnvironment__wrappee__base() [L193] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND TRUE tmp == 0 [L699] CALL, EXPR isPumpRunning() [L249] int retValue_acc ; [L252] retValue_acc = pumpRunning [L253] return (retValue_acc); [L699] RET, EXPR isPumpRunning() [L699] tmp___0 = isPumpRunning() [L701] COND TRUE \read(tmp___0) [L703] CALL __automaton_fail() [L317] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.2s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 39.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1432 SDtfs, 4039 SDslu, 1694 SDs, 0 SdLazy, 9644 SolverSat, 2680 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 605 GetRequests, 415 SyntacticMatches, 7 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 18.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1022occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 602 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1347 NumberOfCodeBlocks, 1347 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1136 ConstructedInterpolants, 0 QuantifiedInterpolants, 433066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 184/214 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...