/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:20:12,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:20:12,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:20:12,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:20:12,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:20:12,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:20:12,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:20:12,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:20:12,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:20:12,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:20:12,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:20:12,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:20:12,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:20:12,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:20:12,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:20:12,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:20:12,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:20:12,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:20:12,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:20:12,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:20:12,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:20:12,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:20:12,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:20:12,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:20:12,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:20:12,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:20:12,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:20:12,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:20:12,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:20:12,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:20:12,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:20:12,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:20:12,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:20:12,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:20:12,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:20:12,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:20:12,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:20:12,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:20:12,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:20:12,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:20:12,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:20:12,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:20:12,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:20:12,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:20:12,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:20:12,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:20:12,120 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:20:12,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:20:12,121 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:20:12,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:20:12,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:20:12,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:20:12,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:20:12,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:20:12,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:20:12,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:20:12,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:20:12,123 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:20:12,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:20:12,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:20:12,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:20:12,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:20:12,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:20:12,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:20:12,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:20:12,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:20:12,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:20:12,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:20:12,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:20:12,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:20:12,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:20:12,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:20:12,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:20:12,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:20:12,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:20:12,451 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:20:12,452 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:20:12,453 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-21 16:20:12,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/136d850a5/a570564170e546348d03502a59c7d287/FLAGe0d7d9f70 [2020-08-21 16:20:13,049 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:20:13,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-21 16:20:13,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/136d850a5/a570564170e546348d03502a59c7d287/FLAGe0d7d9f70 [2020-08-21 16:20:13,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/136d850a5/a570564170e546348d03502a59c7d287 [2020-08-21 16:20:13,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:20:13,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:20:13,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:20:13,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:20:13,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:20:13,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:20:13" (1/1) ... [2020-08-21 16:20:13,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cc7f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:13, skipping insertion in model container [2020-08-21 16:20:13,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:20:13" (1/1) ... [2020-08-21 16:20:13,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:20:13,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:20:13,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:20:13,889 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:20:13,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:20:13,998 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:20:13,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:13 WrapperNode [2020-08-21 16:20:13,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:20:13,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:20:13,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:20:13,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:20:14,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:13" (1/1) ... [2020-08-21 16:20:14,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:13" (1/1) ... [2020-08-21 16:20:14,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:13" (1/1) ... [2020-08-21 16:20:14,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:13" (1/1) ... [2020-08-21 16:20:14,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:13" (1/1) ... [2020-08-21 16:20:14,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:13" (1/1) ... [2020-08-21 16:20:14,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:13" (1/1) ... [2020-08-21 16:20:14,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:20:14,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:20:14,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:20:14,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:20:14,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:20:14,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:20:14,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:20:14,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:20:14,172 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:20:14,172 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:20:14,173 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:20:14,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:20:14,173 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:20:14,173 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:20:14,174 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 16:20:14,174 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:20:14,174 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:20:14,174 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:20:14,175 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:20:14,175 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:20:14,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 16:20:14,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 16:20:14,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:20:14,176 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:20:14,176 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:20:14,176 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 16:20:14,177 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:20:14,177 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:20:14,177 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:20:14,177 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:20:14,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:20:14,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:20:14,179 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:20:14,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 16:20:14,179 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 16:20:14,179 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:20:14,179 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:20:14,179 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:20:14,179 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:20:14,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:20:14,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:20:14,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:20:14,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:20:14,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:20:14,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:20:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:20:14,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:20:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:20:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:20:14,184 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:20:14,184 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:20:14,184 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:20:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:20:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:20:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 16:20:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:20:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:20:14,185 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:20:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:20:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:20:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:20:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 16:20:14,186 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:20:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:20:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:20:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:20:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:20:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:20:14,187 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:20:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:20:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 16:20:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 16:20:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:20:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:20:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:20:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 16:20:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 16:20:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:20:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:20:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:20:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:20:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:20:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:20:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:20:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:20:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:20:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:20:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:20:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:20:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:20:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:20:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:20:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:20:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:20:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:20:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:20:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:20:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:20:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:20:15,159 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:20:15,159 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:20:15,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:20:15 BoogieIcfgContainer [2020-08-21 16:20:15,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:20:15,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:20:15,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:20:15,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:20:15,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:20:13" (1/3) ... [2020-08-21 16:20:15,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346facd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:20:15, skipping insertion in model container [2020-08-21 16:20:15,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:13" (2/3) ... [2020-08-21 16:20:15,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346facd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:20:15, skipping insertion in model container [2020-08-21 16:20:15,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:20:15" (3/3) ... [2020-08-21 16:20:15,173 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product39.cil.c [2020-08-21 16:20:15,183 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:20:15,192 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:20:15,206 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:20:15,231 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:20:15,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:20:15,232 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:20:15,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:20:15,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:20:15,232 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:20:15,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:20:15,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:20:15,256 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-21 16:20:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 16:20:15,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:15,267 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] [2020-08-21 16:20:15,267 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:15,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:15,274 INFO L82 PathProgramCache]: Analyzing trace with hash 652232891, now seen corresponding path program 1 times [2020-08-21 16:20:15,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:15,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325395031] [2020-08-21 16:20:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:15,931 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:15,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:15,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:15,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:15,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:15,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:16,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:16,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:20:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:16,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 16:20:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:16,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325395031] [2020-08-21 16:20:16,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:16,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:20:16,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334335620] [2020-08-21 16:20:16,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:20:16,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:16,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:20:16,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:20:16,071 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 4 states. [2020-08-21 16:20:17,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:17,236 INFO L93 Difference]: Finished difference Result 301 states and 396 transitions. [2020-08-21 16:20:17,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 16:20:17,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 16:20:17,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:17,254 INFO L225 Difference]: With dead ends: 301 [2020-08-21 16:20:17,254 INFO L226 Difference]: Without dead ends: 168 [2020-08-21 16:20:17,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:20:17,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-21 16:20:17,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-21 16:20:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-21 16:20:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 159 transitions. [2020-08-21 16:20:17,356 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 159 transitions. Word has length 51 [2020-08-21 16:20:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:17,357 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 159 transitions. [2020-08-21 16:20:17,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:20:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 159 transitions. [2020-08-21 16:20:17,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 16:20:17,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:17,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:20:17,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:20:17,362 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:17,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:17,363 INFO L82 PathProgramCache]: Analyzing trace with hash -564528421, now seen corresponding path program 1 times [2020-08-21 16:20:17,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:17,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230808733] [2020-08-21 16:20:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:17,701 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:17,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:17,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:17,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:17,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:17,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:17,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:17,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:20:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:17,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:20:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:17,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230808733] [2020-08-21 16:20:17,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:17,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:20:17,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099229547] [2020-08-21 16:20:17,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:20:17,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:17,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:20:17,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:20:17,757 INFO L87 Difference]: Start difference. First operand 134 states and 159 transitions. Second operand 5 states. [2020-08-21 16:20:18,201 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:19,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:19,171 INFO L93 Difference]: Finished difference Result 240 states and 299 transitions. [2020-08-21 16:20:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:20:19,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 16:20:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:19,176 INFO L225 Difference]: With dead ends: 240 [2020-08-21 16:20:19,176 INFO L226 Difference]: Without dead ends: 158 [2020-08-21 16:20:19,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:20:19,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-21 16:20:19,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 125. [2020-08-21 16:20:19,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-21 16:20:19,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2020-08-21 16:20:19,239 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 52 [2020-08-21 16:20:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:19,239 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2020-08-21 16:20:19,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:20:19,239 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2020-08-21 16:20:19,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 16:20:19,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:19,245 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] [2020-08-21 16:20:19,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:20:19,245 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:19,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:19,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1211879035, now seen corresponding path program 1 times [2020-08-21 16:20:19,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:19,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497121767] [2020-08-21 16:20:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:19,586 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:19,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:19,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:19,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:19,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:19,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:19,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:19,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:20:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:19,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 16:20:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:19,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497121767] [2020-08-21 16:20:19,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:19,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:20:19,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955306582] [2020-08-21 16:20:19,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:20:19,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:19,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:20:19,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:20:19,724 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand 9 states. [2020-08-21 16:20:20,103 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:20,464 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:20,718 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:20,964 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:21,843 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:23,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:23,770 INFO L93 Difference]: Finished difference Result 423 states and 537 transitions. [2020-08-21 16:20:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 16:20:23,773 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-21 16:20:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:23,777 INFO L225 Difference]: With dead ends: 423 [2020-08-21 16:20:23,777 INFO L226 Difference]: Without dead ends: 326 [2020-08-21 16:20:23,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:20:23,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-21 16:20:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 265. [2020-08-21 16:20:23,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-21 16:20:23,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2020-08-21 16:20:23,860 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 56 [2020-08-21 16:20:23,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:23,860 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2020-08-21 16:20:23,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:20:23,860 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2020-08-21 16:20:23,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 16:20:23,863 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:23,863 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] [2020-08-21 16:20:23,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:20:23,864 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:23,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:23,864 INFO L82 PathProgramCache]: Analyzing trace with hash -773448372, now seen corresponding path program 1 times [2020-08-21 16:20:23,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:23,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849949584] [2020-08-21 16:20:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:24,230 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:24,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:24,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:24,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:24,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:24,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:24,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:24,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:20:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:24,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 16:20:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:24,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 16:20:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:24,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849949584] [2020-08-21 16:20:24,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:24,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:20:24,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990036107] [2020-08-21 16:20:24,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:20:24,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:24,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:20:24,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:20:24,354 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 9 states. [2020-08-21 16:20:24,756 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:25,817 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:26,212 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:26,536 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:26,852 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:28,134 INFO L93 Difference]: Finished difference Result 845 states and 1123 transitions. [2020-08-21 16:20:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 16:20:28,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-21 16:20:28,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:28,142 INFO L225 Difference]: With dead ends: 845 [2020-08-21 16:20:28,142 INFO L226 Difference]: Without dead ends: 608 [2020-08-21 16:20:28,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 16:20:28,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-08-21 16:20:28,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 478. [2020-08-21 16:20:28,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-21 16:20:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 588 transitions. [2020-08-21 16:20:28,268 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 588 transitions. Word has length 62 [2020-08-21 16:20:28,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:28,268 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 588 transitions. [2020-08-21 16:20:28,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:20:28,269 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 588 transitions. [2020-08-21 16:20:28,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 16:20:28,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:28,273 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] [2020-08-21 16:20:28,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:20:28,273 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:28,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:28,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1032831448, now seen corresponding path program 1 times [2020-08-21 16:20:28,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:28,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037463541] [2020-08-21 16:20:28,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:28,619 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:28,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:28,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:28,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:28,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:28,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:28,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:28,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:20:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:28,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:20:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:28,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 16:20:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:28,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 16:20:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:28,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037463541] [2020-08-21 16:20:28,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:28,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:20:28,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161143302] [2020-08-21 16:20:28,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:20:28,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:28,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:20:28,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:20:28,757 INFO L87 Difference]: Start difference. First operand 478 states and 588 transitions. Second operand 10 states. [2020-08-21 16:20:29,142 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:30,122 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:30,438 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:30,680 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:31,275 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:32,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:32,488 INFO L93 Difference]: Finished difference Result 1339 states and 1842 transitions. [2020-08-21 16:20:32,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 16:20:32,491 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-21 16:20:32,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:32,497 INFO L225 Difference]: With dead ends: 1339 [2020-08-21 16:20:32,498 INFO L226 Difference]: Without dead ends: 889 [2020-08-21 16:20:32,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-21 16:20:32,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-21 16:20:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 693. [2020-08-21 16:20:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-08-21 16:20:32,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 847 transitions. [2020-08-21 16:20:32,656 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 847 transitions. Word has length 66 [2020-08-21 16:20:32,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:32,657 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 847 transitions. [2020-08-21 16:20:32,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:20:32,657 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 847 transitions. [2020-08-21 16:20:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 16:20:32,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:32,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:20:32,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:20:32,660 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:32,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:32,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1961211398, now seen corresponding path program 1 times [2020-08-21 16:20:32,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:32,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320317555] [2020-08-21 16:20:32,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:32,915 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:32,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:32,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:32,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:32,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:32,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:32,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:32,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:20:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:32,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:20:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:32,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:33,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:33,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:33,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:20:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:33,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:20:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:33,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 16:20:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:33,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320317555] [2020-08-21 16:20:33,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:33,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:20:33,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903916356] [2020-08-21 16:20:33,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:20:33,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:33,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:20:33,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:20:33,080 INFO L87 Difference]: Start difference. First operand 693 states and 847 transitions. Second operand 10 states. [2020-08-21 16:20:33,474 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:34,451 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:34,695 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 16:20:34,977 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:35,233 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:37,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:37,385 INFO L93 Difference]: Finished difference Result 2350 states and 3369 transitions. [2020-08-21 16:20:37,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 16:20:37,386 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-21 16:20:37,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:37,401 INFO L225 Difference]: With dead ends: 2350 [2020-08-21 16:20:37,402 INFO L226 Difference]: Without dead ends: 1685 [2020-08-21 16:20:37,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-21 16:20:37,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-21 16:20:37,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1247. [2020-08-21 16:20:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-08-21 16:20:37,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1522 transitions. [2020-08-21 16:20:37,695 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1522 transitions. Word has length 88 [2020-08-21 16:20:37,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:37,696 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1522 transitions. [2020-08-21 16:20:37,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:20:37,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1522 transitions. [2020-08-21 16:20:37,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 16:20:37,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:37,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:20:37,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:20:37,699 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:37,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:37,700 INFO L82 PathProgramCache]: Analyzing trace with hash 608275001, now seen corresponding path program 1 times [2020-08-21 16:20:37,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:37,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374083036] [2020-08-21 16:20:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:37,989 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:37,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:38,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:38,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:38,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:38,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:38,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:38,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:20:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:38,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:20:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:38,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:38,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:38,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:38,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:20:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:38,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:20:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:38,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 16:20:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:38,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374083036] [2020-08-21 16:20:38,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:38,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:20:38,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861140967] [2020-08-21 16:20:38,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:20:38,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:38,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:20:38,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:20:38,131 INFO L87 Difference]: Start difference. First operand 1247 states and 1522 transitions. Second operand 10 states. [2020-08-21 16:20:39,419 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:39,682 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:20:39,951 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:40,194 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:41,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:41,385 INFO L93 Difference]: Finished difference Result 2904 states and 3892 transitions. [2020-08-21 16:20:41,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 16:20:41,386 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-21 16:20:41,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:41,397 INFO L225 Difference]: With dead ends: 2904 [2020-08-21 16:20:41,397 INFO L226 Difference]: Without dead ends: 1685 [2020-08-21 16:20:41,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:20:41,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-21 16:20:41,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1287. [2020-08-21 16:20:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1287 states. [2020-08-21 16:20:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1562 transitions. [2020-08-21 16:20:41,695 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1562 transitions. Word has length 88 [2020-08-21 16:20:41,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:41,698 INFO L479 AbstractCegarLoop]: Abstraction has 1287 states and 1562 transitions. [2020-08-21 16:20:41,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:20:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1562 transitions. [2020-08-21 16:20:41,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 16:20:41,701 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:41,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:20:41,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:20:41,702 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:41,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:41,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1309874875, now seen corresponding path program 1 times [2020-08-21 16:20:41,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:41,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783434308] [2020-08-21 16:20:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,007 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:42,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:20:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:20:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:20:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:20:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 16:20:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:42,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783434308] [2020-08-21 16:20:42,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:42,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:20:42,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950766655] [2020-08-21 16:20:42,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:20:42,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:42,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:20:42,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:20:42,200 INFO L87 Difference]: Start difference. First operand 1287 states and 1562 transitions. Second operand 12 states. [2020-08-21 16:20:43,255 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:43,503 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:43,726 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:44,516 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:44,785 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:45,029 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:46,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:46,424 INFO L93 Difference]: Finished difference Result 2600 states and 3450 transitions. [2020-08-21 16:20:46,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 16:20:46,431 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-21 16:20:46,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:46,441 INFO L225 Difference]: With dead ends: 2600 [2020-08-21 16:20:46,441 INFO L226 Difference]: Without dead ends: 1341 [2020-08-21 16:20:46,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 16:20:46,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-08-21 16:20:46,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1063. [2020-08-21 16:20:46,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-08-21 16:20:46,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1258 transitions. [2020-08-21 16:20:46,650 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1258 transitions. Word has length 88 [2020-08-21 16:20:46,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:46,650 INFO L479 AbstractCegarLoop]: Abstraction has 1063 states and 1258 transitions. [2020-08-21 16:20:46,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:20:46,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1258 transitions. [2020-08-21 16:20:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 16:20:46,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:46,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:20:46,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:20:46,656 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:46,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:46,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1814435734, now seen corresponding path program 1 times [2020-08-21 16:20:46,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:46,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569536684] [2020-08-21 16:20:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:46,944 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:46,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:46,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:46,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:46,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:46,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:46,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:46,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:20:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:46,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:20:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:47,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 16:20:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:47,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:47,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:47,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:47,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:20:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:47,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 16:20:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:47,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 16:20:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:47,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569536684] [2020-08-21 16:20:47,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:47,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:20:47,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545368035] [2020-08-21 16:20:47,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:20:47,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:47,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:20:47,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:20:47,047 INFO L87 Difference]: Start difference. First operand 1063 states and 1258 transitions. Second operand 8 states. [2020-08-21 16:20:47,382 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:49,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:49,932 INFO L93 Difference]: Finished difference Result 2130 states and 2835 transitions. [2020-08-21 16:20:49,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 16:20:49,933 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-21 16:20:49,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:49,946 INFO L225 Difference]: With dead ends: 2130 [2020-08-21 16:20:49,946 INFO L226 Difference]: Without dead ends: 2127 [2020-08-21 16:20:49,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-21 16:20:49,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2020-08-21 16:20:50,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1652. [2020-08-21 16:20:50,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2020-08-21 16:20:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1981 transitions. [2020-08-21 16:20:50,379 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1981 transitions. Word has length 92 [2020-08-21 16:20:50,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:50,381 INFO L479 AbstractCegarLoop]: Abstraction has 1652 states and 1981 transitions. [2020-08-21 16:20:50,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:20:50,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1981 transitions. [2020-08-21 16:20:50,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 16:20:50,390 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:50,390 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:20:50,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:20:50,391 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:50,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:50,391 INFO L82 PathProgramCache]: Analyzing trace with hash -374585462, now seen corresponding path program 1 times [2020-08-21 16:20:50,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:50,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761955538] [2020-08-21 16:20:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,669 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:50,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:20:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:20:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:20:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:20:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:20:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:20:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 16:20:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 16:20:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:20:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 16:20:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:50,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 16:20:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 16:20:51,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761955538] [2020-08-21 16:20:51,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:20:51,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 16:20:51,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509393573] [2020-08-21 16:20:51,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 16:20:51,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:51,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 16:20:51,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:20:51,013 INFO L87 Difference]: Start difference. First operand 1652 states and 1981 transitions. Second operand 19 states. [2020-08-21 16:20:51,690 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:52,044 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 16:20:52,296 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:20:52,534 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:20:53,292 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:53,879 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:54,281 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:56,751 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:57,009 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:57,287 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:57,540 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:57,780 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:58,019 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:58,304 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:58,546 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:59,502 INFO L93 Difference]: Finished difference Result 3563 states and 4503 transitions. [2020-08-21 16:20:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-21 16:20:59,503 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-08-21 16:20:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:59,514 INFO L225 Difference]: With dead ends: 3563 [2020-08-21 16:20:59,515 INFO L226 Difference]: Without dead ends: 1939 [2020-08-21 16:20:59,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-21 16:20:59,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-08-21 16:20:59,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1598. [2020-08-21 16:20:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1598 states. [2020-08-21 16:20:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 1879 transitions. [2020-08-21 16:20:59,874 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 1879 transitions. Word has length 150 [2020-08-21 16:20:59,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:59,874 INFO L479 AbstractCegarLoop]: Abstraction has 1598 states and 1879 transitions. [2020-08-21 16:20:59,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 16:20:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 1879 transitions. [2020-08-21 16:20:59,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 16:20:59,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:59,881 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, 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] [2020-08-21 16:20:59,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:20:59,882 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:59,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:59,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1053600099, now seen corresponding path program 1 times [2020-08-21 16:20:59,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:59,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481717765] [2020-08-21 16:20:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,258 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:21:00,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:21:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:21:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:21:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:21:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:21:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:21:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:21:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:21:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:21:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:21:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:21:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:21:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:21:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:21:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 16:21:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 16:21:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:21:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:21:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 16:21:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 16:21:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-21 16:21:00,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481717765] [2020-08-21 16:21:00,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:21:00,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 16:21:00,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099811762] [2020-08-21 16:21:00,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 16:21:00,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:21:00,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 16:21:00,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:21:00,484 INFO L87 Difference]: Start difference. First operand 1598 states and 1879 transitions. Second operand 14 states. [2020-08-21 16:21:02,149 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:02,474 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:21:02,695 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:21:03,197 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:21:04,571 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:21:06,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:21:06,383 INFO L93 Difference]: Finished difference Result 2988 states and 3684 transitions. [2020-08-21 16:21:06,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-21 16:21:06,384 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 154 [2020-08-21 16:21:06,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:21:06,394 INFO L225 Difference]: With dead ends: 2988 [2020-08-21 16:21:06,394 INFO L226 Difference]: Without dead ends: 1734 [2020-08-21 16:21:06,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2020-08-21 16:21:06,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2020-08-21 16:21:06,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1482. [2020-08-21 16:21:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2020-08-21 16:21:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1650 transitions. [2020-08-21 16:21:06,664 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1650 transitions. Word has length 154 [2020-08-21 16:21:06,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:21:06,665 INFO L479 AbstractCegarLoop]: Abstraction has 1482 states and 1650 transitions. [2020-08-21 16:21:06,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 16:21:06,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1650 transitions. [2020-08-21 16:21:06,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-21 16:21:06,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:21:06,671 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, 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] [2020-08-21 16:21:06,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:21:06,671 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:21:06,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:21:06,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2018968461, now seen corresponding path program 1 times [2020-08-21 16:21:06,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:21:06,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989842585] [2020-08-21 16:21:06,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:21:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:06,998 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:21:06,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:21:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:21:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:21:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:21:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:21:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:21:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:21:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:21:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:21:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:21:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:21:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:21:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:21:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:21:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-21 16:21:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:21:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 16:21:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:21:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:21:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 16:21:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-21 16:21:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:07,176 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-08-21 16:21:07,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989842585] [2020-08-21 16:21:07,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:21:07,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 16:21:07,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666721987] [2020-08-21 16:21:07,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:21:07,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:21:07,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:21:07,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:21:07,178 INFO L87 Difference]: Start difference. First operand 1482 states and 1650 transitions. Second operand 10 states. [2020-08-21 16:21:08,041 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:21:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:21:09,782 INFO L93 Difference]: Finished difference Result 1918 states and 2270 transitions. [2020-08-21 16:21:09,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 16:21:09,788 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2020-08-21 16:21:09,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:21:09,789 INFO L225 Difference]: With dead ends: 1918 [2020-08-21 16:21:09,789 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 16:21:09,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 16:21:09,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 16:21:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 16:21:09,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 16:21:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 16:21:09,796 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-08-21 16:21:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:21:09,797 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 16:21:09,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:21:09,797 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 16:21:09,797 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 16:21:09,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 16:21:09,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.