/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:58:05,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:58:05,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:58:05,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:58:05,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:58:05,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:58:05,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:58:05,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:58:05,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:58:05,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:58:05,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:58:05,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:58:05,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:58:05,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:58:05,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:58:05,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:58:05,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:58:05,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:58:05,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:58:05,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:58:05,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:58:05,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:58:05,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:58:05,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:58:05,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:58:05,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:58:05,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:58:05,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:58:05,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:58:05,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:58:05,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:58:05,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:58:05,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:58:05,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:58:05,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:58:05,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:58:05,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:58:05,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:58:05,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:58:05,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:58:05,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:58:05,119 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 [2020-08-19 04:58:05,162 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:58:05,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:58:05,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:58:05,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:58:05,165 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:58:05,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:58:05,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:58:05,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:58:05,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:58:05,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:58:05,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:58:05,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:58:05,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:58:05,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:58:05,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:58:05,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:58:05,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:58:05,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:58:05,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:58:05,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:58:05,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:58:05,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:58:05,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:58:05,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:58:05,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:58:05,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:58:05,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:58:05,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:58:05,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:58:05,171 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 04:58:05,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:58:05,483 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:58:05,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:58:05,491 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:58:05,491 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:58:05,492 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2020-08-19 04:58:05,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d40bbbec/ce51fb259e094af88000a9e3b5d3c7ad/FLAG1f055d683 [2020-08-19 04:58:06,027 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:58:06,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2020-08-19 04:58:06,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d40bbbec/ce51fb259e094af88000a9e3b5d3c7ad/FLAG1f055d683 [2020-08-19 04:58:06,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d40bbbec/ce51fb259e094af88000a9e3b5d3c7ad [2020-08-19 04:58:06,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:58:06,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:58:06,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:58:06,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:58:06,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:58:06,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:58:06" (1/1) ... [2020-08-19 04:58:06,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28cbdd7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:58:06, skipping insertion in model container [2020-08-19 04:58:06,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:58:06" (1/1) ... [2020-08-19 04:58:06,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:58:06,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:58:06,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:58:07,033 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:58:07,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:58:07,182 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:58:07,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:58:07 WrapperNode [2020-08-19 04:58:07,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:58:07,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:58:07,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:58:07,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:58:07,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:58:07" (1/1) ... [2020-08-19 04:58:07,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:58:07" (1/1) ... [2020-08-19 04:58:07,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:58:07" (1/1) ... [2020-08-19 04:58:07,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:58:07" (1/1) ... [2020-08-19 04:58:07,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:58:07" (1/1) ... [2020-08-19 04:58:07,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:58:07" (1/1) ... [2020-08-19 04:58:07,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:58:07" (1/1) ... [2020-08-19 04:58:07,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:58:07,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:58:07,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:58:07,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:58:07,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:58:07" (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 [2020-08-19 04:58:07,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:58:07,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:58:07,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:58:07,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 04:58:07,358 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:58:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:58:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:58:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:58:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:58:07,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:58:07,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:58:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:58:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:58:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:58:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:58:07,362 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:58:07,362 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:58:07,362 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:58:07,362 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:58:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 04:58:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:58:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:58:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:58:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:58:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:58:07,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:58:07,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 04:58:07,365 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:58:07,365 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:58:07,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:58:07,365 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:58:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:58:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:58:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:58:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:58:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:58:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:58:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:58:07,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:58:07,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 04:58:07,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:58:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:58:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:58:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:58:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:58:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:58:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:58:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 04:58:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:58:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:58:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:58:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:58:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:58:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:58:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:58:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:58:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:58:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:58:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:58:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:58:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:58:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:58:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:58:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:58:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:58:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:58:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:58:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:58:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:58:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:58:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:58:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:58:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:58:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:58:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:58:07,375 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:58:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:58:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 04:58:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:58:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:58:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:58:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:58:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:58:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:58:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:58:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 04:58:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 04:58:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:58:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:58:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:58:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:58:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:58:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:58:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:58:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:58:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:58:08,518 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:58:08,519 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:58:08,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:58:08 BoogieIcfgContainer [2020-08-19 04:58:08,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:58:08,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:58:08,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:58:08,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:58:08,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:58:06" (1/3) ... [2020-08-19 04:58:08,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182188d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:58:08, skipping insertion in model container [2020-08-19 04:58:08,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:58:07" (2/3) ... [2020-08-19 04:58:08,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182188d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:58:08, skipping insertion in model container [2020-08-19 04:58:08,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:58:08" (3/3) ... [2020-08-19 04:58:08,533 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product57.cil.c [2020-08-19 04:58:08,544 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:58:08,553 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:58:08,567 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:58:08,592 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:58:08,593 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:58:08,593 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:58:08,593 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:58:08,593 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:58:08,594 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:58:08,594 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:58:08,594 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:58:08,616 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-19 04:58:08,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 04:58:08,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:58:08,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:58:08,628 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:58:08,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:58:08,634 INFO L82 PathProgramCache]: Analyzing trace with hash 135364863, now seen corresponding path program 1 times [2020-08-19 04:58:08,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:58:08,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46819245] [2020-08-19 04:58:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:58:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:09,283 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:58:09,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:58:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:09,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:58:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:09,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:58:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:09,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:09,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:58:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:09,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:58:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:09,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:58:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:58:09,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46819245] [2020-08-19 04:58:09,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:58:09,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:58:09,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808758026] [2020-08-19 04:58:09,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:58:09,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:58:09,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:58:09,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:58:09,455 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 3 states. [2020-08-19 04:58:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:58:10,647 INFO L93 Difference]: Finished difference Result 323 states and 418 transitions. [2020-08-19 04:58:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:58:10,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 04:58:10,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:58:10,671 INFO L225 Difference]: With dead ends: 323 [2020-08-19 04:58:10,671 INFO L226 Difference]: Without dead ends: 174 [2020-08-19 04:58:10,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:58:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-19 04:58:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2020-08-19 04:58:10,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-19 04:58:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2020-08-19 04:58:10,772 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 46 [2020-08-19 04:58:10,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:58:10,773 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2020-08-19 04:58:10,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:58:10,773 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2020-08-19 04:58:10,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 04:58:10,776 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:58:10,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:58:10,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:58:10,777 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:58:10,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:58:10,778 INFO L82 PathProgramCache]: Analyzing trace with hash 327228860, now seen corresponding path program 1 times [2020-08-19 04:58:10,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:58:10,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663724316] [2020-08-19 04:58:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:58:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:11,193 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:58:11,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:58:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:11,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:58:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:11,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:58:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:11,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:11,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:58:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:11,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:58:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:11,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:58:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:58:11,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663724316] [2020-08-19 04:58:11,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:58:11,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:58:11,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959517093] [2020-08-19 04:58:11,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:58:11,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:58:11,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:58:11,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:58:11,247 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 4 states. [2020-08-19 04:58:11,654 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:58:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:58:12,584 INFO L93 Difference]: Finished difference Result 256 states and 309 transitions. [2020-08-19 04:58:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:58:12,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 04:58:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:58:12,591 INFO L225 Difference]: With dead ends: 256 [2020-08-19 04:58:12,592 INFO L226 Difference]: Without dead ends: 158 [2020-08-19 04:58:12,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:58:12,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-19 04:58:12,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-08-19 04:58:12,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-19 04:58:12,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2020-08-19 04:58:12,654 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 47 [2020-08-19 04:58:12,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:58:12,654 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2020-08-19 04:58:12,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:58:12,655 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2020-08-19 04:58:12,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 04:58:12,666 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:58:12,666 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] [2020-08-19 04:58:12,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:58:12,667 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:58:12,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:58:12,667 INFO L82 PathProgramCache]: Analyzing trace with hash -207054876, now seen corresponding path program 1 times [2020-08-19 04:58:12,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:58:12,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45287029] [2020-08-19 04:58:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:58:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:13,003 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:58:13,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:58:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:13,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:58:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:13,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:58:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:13,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:13,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:58:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:13,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:58:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:13,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:58:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:58:13,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45287029] [2020-08-19 04:58:13,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:58:13,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:58:13,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185647875] [2020-08-19 04:58:13,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:58:13,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:58:13,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:58:13,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:58:13,089 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand 8 states. [2020-08-19 04:58:13,408 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:58:13,745 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:58:13,991 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:58:14,215 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:58:15,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:58:15,440 INFO L93 Difference]: Finished difference Result 265 states and 323 transitions. [2020-08-19 04:58:15,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:58:15,441 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 04:58:15,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:58:15,445 INFO L225 Difference]: With dead ends: 265 [2020-08-19 04:58:15,445 INFO L226 Difference]: Without dead ends: 158 [2020-08-19 04:58:15,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:58:15,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-19 04:58:15,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-08-19 04:58:15,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-19 04:58:15,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2020-08-19 04:58:15,511 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 51 [2020-08-19 04:58:15,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:58:15,512 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2020-08-19 04:58:15,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:58:15,512 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2020-08-19 04:58:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 04:58:15,514 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:58:15,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:58:15,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:58:15,514 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:58:15,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:58:15,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1468702982, now seen corresponding path program 1 times [2020-08-19 04:58:15,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:58:15,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945916055] [2020-08-19 04:58:15,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:58:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:15,824 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:58:15,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:58:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:15,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:58:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:15,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:58:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:15,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:15,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:58:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:15,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 04:58:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:15,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:15,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:15,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 04:58:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:15,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 04:58:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:58:15,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945916055] [2020-08-19 04:58:15,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:58:15,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:58:15,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389960477] [2020-08-19 04:58:15,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:58:15,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:58:15,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:58:15,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:58:15,918 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 6 states. [2020-08-19 04:58:16,201 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:58:17,287 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:58:18,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:58:18,022 INFO L93 Difference]: Finished difference Result 357 states and 439 transitions. [2020-08-19 04:58:18,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:58:18,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-19 04:58:18,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:58:18,025 INFO L225 Difference]: With dead ends: 357 [2020-08-19 04:58:18,026 INFO L226 Difference]: Without dead ends: 250 [2020-08-19 04:58:18,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:58:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-08-19 04:58:18,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 209. [2020-08-19 04:58:18,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-19 04:58:18,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 238 transitions. [2020-08-19 04:58:18,079 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 238 transitions. Word has length 64 [2020-08-19 04:58:18,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:58:18,080 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 238 transitions. [2020-08-19 04:58:18,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:58:18,080 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 238 transitions. [2020-08-19 04:58:18,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 04:58:18,081 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:58:18,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:58:18,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:58:18,082 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:58:18,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:58:18,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1930431345, now seen corresponding path program 1 times [2020-08-19 04:58:18,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:58:18,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872419293] [2020-08-19 04:58:18,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:58:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:18,351 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:58:18,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:58:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:18,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:58:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:18,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:58:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:18,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:18,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:58:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:18,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 04:58:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:18,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:18,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:18,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:18,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:58:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:18,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 04:58:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:18,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 04:58:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:58:18,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872419293] [2020-08-19 04:58:18,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:58:18,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:58:18,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835366718] [2020-08-19 04:58:18,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:58:18,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:58:18,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:58:18,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:58:18,447 INFO L87 Difference]: Start difference. First operand 209 states and 238 transitions. Second operand 8 states. [2020-08-19 04:58:18,788 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:58:19,674 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:58:19,991 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:58:20,532 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:58:20,759 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:58:21,010 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:58:21,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:58:21,985 INFO L93 Difference]: Finished difference Result 622 states and 764 transitions. [2020-08-19 04:58:21,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:58:21,991 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-19 04:58:21,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:58:21,995 INFO L225 Difference]: With dead ends: 622 [2020-08-19 04:58:21,995 INFO L226 Difference]: Without dead ends: 437 [2020-08-19 04:58:21,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:58:22,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-08-19 04:58:22,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 373. [2020-08-19 04:58:22,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-19 04:58:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 426 transitions. [2020-08-19 04:58:22,077 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 426 transitions. Word has length 78 [2020-08-19 04:58:22,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:58:22,078 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 426 transitions. [2020-08-19 04:58:22,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:58:22,078 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 426 transitions. [2020-08-19 04:58:22,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-19 04:58:22,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:58:22,080 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] [2020-08-19 04:58:22,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:58:22,080 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:58:22,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:58:22,081 INFO L82 PathProgramCache]: Analyzing trace with hash -613018165, now seen corresponding path program 1 times [2020-08-19 04:58:22,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:58:22,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905861252] [2020-08-19 04:58:22,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:58:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:22,360 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:58:22,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:58:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:22,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:58:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:22,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:58:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:22,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:22,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:58:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:22,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:58:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:22,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:58:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:22,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:22,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:22,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:22,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:58:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:22,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 04:58:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:22,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 04:58:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:58:22,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905861252] [2020-08-19 04:58:22,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:58:22,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:58:22,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431966082] [2020-08-19 04:58:22,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:58:22,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:58:22,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:58:22,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:58:22,462 INFO L87 Difference]: Start difference. First operand 373 states and 426 transitions. Second operand 9 states. [2020-08-19 04:58:22,793 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:58:23,906 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:58:24,194 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:58:25,258 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:58:25,507 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:58:25,758 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:58:25,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:58:25,999 INFO L93 Difference]: Finished difference Result 476 states and 594 transitions. [2020-08-19 04:58:26,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 04:58:26,000 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-19 04:58:26,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:58:26,004 INFO L225 Difference]: With dead ends: 476 [2020-08-19 04:58:26,004 INFO L226 Difference]: Without dead ends: 473 [2020-08-19 04:58:26,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 04:58:26,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-08-19 04:58:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 373. [2020-08-19 04:58:26,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-19 04:58:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 425 transitions. [2020-08-19 04:58:26,106 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 425 transitions. Word has length 82 [2020-08-19 04:58:26,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:58:26,107 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 425 transitions. [2020-08-19 04:58:26,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:58:26,107 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 425 transitions. [2020-08-19 04:58:26,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 04:58:26,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:58:26,110 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:58:26,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:58:26,110 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:58:26,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:58:26,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1664141551, now seen corresponding path program 1 times [2020-08-19 04:58:26,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:58:26,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170310354] [2020-08-19 04:58:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:58:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,384 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:58:26,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:58:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:58:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:58:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:58:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:58:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:58:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:58:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 04:58:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 04:58:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:58:26,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170310354] [2020-08-19 04:58:26,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:58:26,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:58:26,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932743754] [2020-08-19 04:58:26,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:58:26,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:58:26,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:58:26,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:58:26,535 INFO L87 Difference]: Start difference. First operand 373 states and 425 transitions. Second operand 9 states. [2020-08-19 04:58:27,389 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:58:27,640 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:58:27,887 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:58:28,123 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:58:29,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:58:29,250 INFO L93 Difference]: Finished difference Result 830 states and 1028 transitions. [2020-08-19 04:58:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:58:29,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-19 04:58:29,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:58:29,254 INFO L225 Difference]: With dead ends: 830 [2020-08-19 04:58:29,254 INFO L226 Difference]: Without dead ends: 481 [2020-08-19 04:58:29,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:58:29,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-08-19 04:58:29,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 383. [2020-08-19 04:58:29,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-08-19 04:58:29,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 435 transitions. [2020-08-19 04:58:29,331 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 435 transitions. Word has length 98 [2020-08-19 04:58:29,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:58:29,332 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 435 transitions. [2020-08-19 04:58:29,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:58:29,332 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 435 transitions. [2020-08-19 04:58:29,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 04:58:29,334 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:58:29,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:58:29,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:58:29,335 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:58:29,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:58:29,335 INFO L82 PathProgramCache]: Analyzing trace with hash -770655213, now seen corresponding path program 1 times [2020-08-19 04:58:29,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:58:29,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230566737] [2020-08-19 04:58:29,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:58:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,577 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:58:29,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:58:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:58:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:58:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:58:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:58:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:58:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:58:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 04:58:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 04:58:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:58:29,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230566737] [2020-08-19 04:58:29,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:58:29,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 04:58:29,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579772983] [2020-08-19 04:58:29,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 04:58:29,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:58:29,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 04:58:29,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:58:29,745 INFO L87 Difference]: Start difference. First operand 383 states and 435 transitions. Second operand 11 states. [2020-08-19 04:58:30,199 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:58:30,473 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:58:30,715 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:58:31,314 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:58:31,567 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:58:31,809 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:58:32,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:58:32,918 INFO L93 Difference]: Finished difference Result 850 states and 1050 transitions. [2020-08-19 04:58:32,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:58:32,919 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-19 04:58:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:58:32,927 INFO L225 Difference]: With dead ends: 850 [2020-08-19 04:58:32,928 INFO L226 Difference]: Without dead ends: 491 [2020-08-19 04:58:32,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:58:32,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-08-19 04:58:33,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 391. [2020-08-19 04:58:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-19 04:58:33,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 443 transitions. [2020-08-19 04:58:33,027 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 443 transitions. Word has length 98 [2020-08-19 04:58:33,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:58:33,027 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 443 transitions. [2020-08-19 04:58:33,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 04:58:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 443 transitions. [2020-08-19 04:58:33,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 04:58:33,032 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:58:33,032 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:58:33,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:58:33,033 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:58:33,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:58:33,033 INFO L82 PathProgramCache]: Analyzing trace with hash -778414572, now seen corresponding path program 1 times [2020-08-19 04:58:33,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:58:33,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906910334] [2020-08-19 04:58:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:58:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,280 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:58:33,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:58:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:58:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:58:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:58:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:58:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:58:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:58:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 04:58:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 04:58:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:58:33,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906910334] [2020-08-19 04:58:33,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:58:33,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 04:58:33,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061940985] [2020-08-19 04:58:33,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:58:33,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:58:33,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:58:33,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:58:33,413 INFO L87 Difference]: Start difference. First operand 391 states and 443 transitions. Second operand 7 states. [2020-08-19 04:58:33,707 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:58:34,183 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:58:36,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:58:36,210 INFO L93 Difference]: Finished difference Result 1153 states and 1472 transitions. [2020-08-19 04:58:36,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 04:58:36,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-19 04:58:36,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:58:36,217 INFO L225 Difference]: With dead ends: 1153 [2020-08-19 04:58:36,217 INFO L226 Difference]: Without dead ends: 786 [2020-08-19 04:58:36,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:58:36,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-08-19 04:58:36,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 687. [2020-08-19 04:58:36,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-08-19 04:58:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 813 transitions. [2020-08-19 04:58:36,363 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 813 transitions. Word has length 98 [2020-08-19 04:58:36,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:58:36,363 INFO L479 AbstractCegarLoop]: Abstraction has 687 states and 813 transitions. [2020-08-19 04:58:36,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:58:36,363 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 813 transitions. [2020-08-19 04:58:36,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-19 04:58:36,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:58:36,366 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:58:36,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:58:36,366 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:58:36,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:58:36,366 INFO L82 PathProgramCache]: Analyzing trace with hash 469491758, now seen corresponding path program 1 times [2020-08-19 04:58:36,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:58:36,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11544668] [2020-08-19 04:58:36,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:58:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,617 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:58:36,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:58:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:58:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:58:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:58:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:58:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:58:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:58:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:58:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 04:58:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:36,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 04:58:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 04:58:37,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11544668] [2020-08-19 04:58:37,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:58:37,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 04:58:37,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680242012] [2020-08-19 04:58:37,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 04:58:37,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:58:37,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 04:58:37,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-19 04:58:37,021 INFO L87 Difference]: Start difference. First operand 687 states and 813 transitions. Second operand 17 states. [2020-08-19 04:58:37,513 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:58:37,910 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:58:38,173 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:58:38,405 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:58:38,997 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:58:39,935 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:58:40,279 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:58:40,558 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:58:40,851 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:58:41,174 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:58:41,456 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:58:42,023 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-19 04:58:42,549 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-19 04:58:44,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:58:44,740 INFO L93 Difference]: Finished difference Result 1418 states and 1746 transitions. [2020-08-19 04:58:44,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 04:58:44,741 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2020-08-19 04:58:44,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:58:44,745 INFO L225 Difference]: With dead ends: 1418 [2020-08-19 04:58:44,746 INFO L226 Difference]: Without dead ends: 755 [2020-08-19 04:58:44,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 04:58:44,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2020-08-19 04:58:44,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 659. [2020-08-19 04:58:44,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-08-19 04:58:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 767 transitions. [2020-08-19 04:58:44,864 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 767 transitions. Word has length 102 [2020-08-19 04:58:44,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:58:44,865 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 767 transitions. [2020-08-19 04:58:44,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 04:58:44,865 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 767 transitions. [2020-08-19 04:58:44,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-19 04:58:44,867 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:58:44,869 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:58:44,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:58:44,870 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:58:44,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:58:44,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1698521745, now seen corresponding path program 1 times [2020-08-19 04:58:44,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:58:44,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576259599] [2020-08-19 04:58:44,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:58:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,228 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:58:45,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:58:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:58:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:58:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:58:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:58:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:58:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:58:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:58:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 04:58:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-19 04:58:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 04:58:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:58:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 04:58:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-19 04:58:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 04:58:45,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576259599] [2020-08-19 04:58:45,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:58:45,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 04:58:45,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656592574] [2020-08-19 04:58:45,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 04:58:45,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:58:45,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 04:58:45,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:58:45,621 INFO L87 Difference]: Start difference. First operand 659 states and 767 transitions. Second operand 14 states. [2020-08-19 04:58:46,075 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:58:46,748 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:58:48,593 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-19 04:58:49,077 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-08-19 04:58:49,544 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-08-19 04:58:50,361 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:58:50,633 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:58:50,873 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:58:51,105 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:58:52,660 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2020-08-19 04:58:53,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:58:53,572 INFO L93 Difference]: Finished difference Result 2026 states and 2659 transitions. [2020-08-19 04:58:53,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-19 04:58:53,573 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-19 04:58:53,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:58:53,583 INFO L225 Difference]: With dead ends: 2026 [2020-08-19 04:58:53,584 INFO L226 Difference]: Without dead ends: 1515 [2020-08-19 04:58:53,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=397, Invalid=1495, Unknown=0, NotChecked=0, Total=1892 [2020-08-19 04:58:53,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-08-19 04:58:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1215. [2020-08-19 04:58:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-08-19 04:58:53,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1429 transitions. [2020-08-19 04:58:53,847 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1429 transitions. Word has length 155 [2020-08-19 04:58:53,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:58:53,849 INFO L479 AbstractCegarLoop]: Abstraction has 1215 states and 1429 transitions. [2020-08-19 04:58:53,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 04:58:53,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1429 transitions. [2020-08-19 04:58:53,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-19 04:58:53,852 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:58:53,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:58:53,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 04:58:53,853 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:58:53,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:58:53,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1973281359, now seen corresponding path program 1 times [2020-08-19 04:58:53,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:58:53,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025919001] [2020-08-19 04:58:53,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:58:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,148 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:58:54,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:58:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:58:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:58:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:58:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:58:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:58:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:58:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:58:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:58:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 04:58:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-19 04:58:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 04:58:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:58:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:58:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:58:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 04:58:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-19 04:58:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:58:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-19 04:58:54,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025919001] [2020-08-19 04:58:54,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:58:54,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 04:58:54,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91286022] [2020-08-19 04:58:54,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 04:58:54,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:58:54,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 04:58:54,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:58:54,395 INFO L87 Difference]: Start difference. First operand 1215 states and 1429 transitions. Second operand 14 states. [2020-08-19 04:58:55,065 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:58:55,335 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:58:55,557 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:58:56,954 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:58:57,184 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:58:57,428 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:58:57,682 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:58:57,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:58:57,896 INFO L93 Difference]: Finished difference Result 1687 states and 2024 transitions. [2020-08-19 04:58:57,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 04:58:57,897 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-19 04:58:57,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:58:57,898 INFO L225 Difference]: With dead ends: 1687 [2020-08-19 04:58:57,899 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 04:58:57,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-08-19 04:58:57,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 04:58:57,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 04:58:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 04:58:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 04:58:57,904 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2020-08-19 04:58:57,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:58:57,905 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 04:58:57,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 04:58:57,905 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 04:58:57,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 04:58:57,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 04:58:57,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 04:58:58,620 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 203 [2020-08-19 04:58:59,198 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 203 [2020-08-19 04:58:59,330 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 203 [2020-08-19 04:59:01,233 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 318 DAG size of output: 285