/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=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:35:58,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:35:58,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:35:58,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:35:58,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:35:58,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:35:58,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:35:58,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:35:58,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:35:58,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:35:58,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:35:58,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:35:58,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:35:58,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:35:58,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:35:58,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:35:58,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:35:58,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:35:58,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:35:58,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:35:58,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:35:58,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:35:58,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:35:58,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:35:58,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:35:58,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:35:58,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:35:58,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:35:58,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:35:58,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:35:58,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:35:58,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:35:58,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:35:58,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:35:58,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:35:58,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:35:58,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:35:58,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:35:58,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:35:58,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:35:58,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:35:58,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:35:58,256 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:35:58,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:35:58,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:35:58,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:35:58,259 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:35:58,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:35:58,260 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:35:58,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:35:58,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:35:58,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:35:58,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:35:58,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:35:58,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:35:58,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:35:58,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:35:58,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:35:58,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:35:58,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:35:58,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:35:58,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:35:58,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:35:58,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:35:58,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:35:58,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:35:58,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:35:58,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:35:58,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:35:58,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:35:58,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:35:58,266 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=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:35:58,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:35:58,616 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:35:58,620 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:35:58,621 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:35:58,622 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:35:58,622 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2020-08-18 18:35:58,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f621c1030/0a92cf93b1c94c7dba017cecc21d4da7/FLAG4207c3fe3 [2020-08-18 18:35:59,264 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:35:59,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2020-08-18 18:35:59,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f621c1030/0a92cf93b1c94c7dba017cecc21d4da7/FLAG4207c3fe3 [2020-08-18 18:35:59,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f621c1030/0a92cf93b1c94c7dba017cecc21d4da7 [2020-08-18 18:35:59,565 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:35:59,566 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:35:59,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:35:59,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:35:59,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:35:59,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:35:59" (1/1) ... [2020-08-18 18:35:59,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0cc214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:35:59, skipping insertion in model container [2020-08-18 18:35:59,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:35:59" (1/1) ... [2020-08-18 18:35:59,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:35:59,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:36:00,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:36:00,102 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:36:00,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:36:00,226 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:36:00,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:00 WrapperNode [2020-08-18 18:36:00,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:36:00,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:36:00,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:36:00,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:36:00,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:00" (1/1) ... [2020-08-18 18:36:00,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:00" (1/1) ... [2020-08-18 18:36:00,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:00" (1/1) ... [2020-08-18 18:36:00,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:00" (1/1) ... [2020-08-18 18:36:00,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:00" (1/1) ... [2020-08-18 18:36:00,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:00" (1/1) ... [2020-08-18 18:36:00,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:00" (1/1) ... [2020-08-18 18:36:00,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:36:00,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:36:00,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:36:00,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:36:00,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:36:00,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:36:00,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:36:00,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:36:00,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:36:00,391 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:36:00,391 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:36:00,391 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:36:00,392 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:36:00,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:36:00,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:36:00,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:36:00,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:36:00,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:36:00,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:36:00,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:36:00,394 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:36:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:36:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:36:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:36:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:36:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:36:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:36:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:36:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:36:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:36:00,399 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:36:00,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:36:00,399 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:36:00,399 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:36:00,400 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:36:00,400 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:36:00,400 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:36:00,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:36:00,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:36:00,400 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:36:00,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:36:00,401 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 18:36:00,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 18:36:00,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 18:36:00,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 18:36:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:36:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:36:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:36:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:36:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:36:00,403 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:36:00,403 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:36:00,403 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:36:00,403 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:36:00,403 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:36:00,403 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:36:00,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 18:36:00,404 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:36:00,404 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:36:00,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:36:00,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:36:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:36:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:36:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:36:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:36:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:36:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:36:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:36:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:36:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:36:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:36:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:36:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:36:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:36:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:36:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:36:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:36:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:36:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:36:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:36:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:36:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 18:36:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:36:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:36:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:36:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:36:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:36:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:36:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:36:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:36:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 18:36:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 18:36:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:36:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:36:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:36:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:36:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:36:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:36:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:36:01,497 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:36:01,497 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:36:01,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:36:01 BoogieIcfgContainer [2020-08-18 18:36:01,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:36:01,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:36:01,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:36:01,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:36:01,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:35:59" (1/3) ... [2020-08-18 18:36:01,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4417ee18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:36:01, skipping insertion in model container [2020-08-18 18:36:01,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:00" (2/3) ... [2020-08-18 18:36:01,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4417ee18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:36:01, skipping insertion in model container [2020-08-18 18:36:01,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:36:01" (3/3) ... [2020-08-18 18:36:01,511 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product35.cil.c [2020-08-18 18:36:01,522 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:36:01,531 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:36:01,546 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:36:01,571 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:36:01,571 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:36:01,571 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:36:01,571 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:36:01,572 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:36:01,572 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:36:01,572 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:36:01,572 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:36:01,595 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2020-08-18 18:36:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 18:36:01,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:01,607 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] [2020-08-18 18:36:01,608 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:01,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:01,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1963515353, now seen corresponding path program 1 times [2020-08-18 18:36:01,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:01,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830724286] [2020-08-18 18:36:01,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:02,284 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:02,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:02,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:02,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:02,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:02,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:02,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:02,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:36:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:02,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:02,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:36:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:02,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 18:36:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:02,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830724286] [2020-08-18 18:36:02,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:02,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:36:02,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069937371] [2020-08-18 18:36:02,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:36:02,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:02,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:36:02,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:36:02,440 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 4 states. [2020-08-18 18:36:03,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:03,452 INFO L93 Difference]: Finished difference Result 276 states and 357 transitions. [2020-08-18 18:36:03,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:36:03,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 18:36:03,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:03,477 INFO L225 Difference]: With dead ends: 276 [2020-08-18 18:36:03,477 INFO L226 Difference]: Without dead ends: 153 [2020-08-18 18:36:03,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:36:03,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-18 18:36:03,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 124. [2020-08-18 18:36:03,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 18:36:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2020-08-18 18:36:03,628 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 59 [2020-08-18 18:36:03,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:03,629 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2020-08-18 18:36:03,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:36:03,629 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2020-08-18 18:36:03,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 18:36:03,641 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:03,641 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] [2020-08-18 18:36:03,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:36:03,642 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:03,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:03,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1851002156, now seen corresponding path program 1 times [2020-08-18 18:36:03,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:03,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690612241] [2020-08-18 18:36:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:04,084 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:04,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:04,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:04,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:04,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:04,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:04,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:04,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:36:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:04,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:04,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 18:36:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:04,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 18:36:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:04,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690612241] [2020-08-18 18:36:04,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:04,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:36:04,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125072074] [2020-08-18 18:36:04,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:36:04,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:04,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:36:04,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:36:04,181 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 9 states. [2020-08-18 18:36:04,530 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:04,871 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:05,107 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:05,340 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:06,334 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:07,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:07,508 INFO L93 Difference]: Finished difference Result 423 states and 533 transitions. [2020-08-18 18:36:07,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 18:36:07,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 18:36:07,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:07,514 INFO L225 Difference]: With dead ends: 423 [2020-08-18 18:36:07,514 INFO L226 Difference]: Without dead ends: 327 [2020-08-18 18:36:07,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 18:36:07,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-18 18:36:07,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 265. [2020-08-18 18:36:07,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-18 18:36:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2020-08-18 18:36:07,587 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 64 [2020-08-18 18:36:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:07,590 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2020-08-18 18:36:07,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:36:07,590 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2020-08-18 18:36:07,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-18 18:36:07,595 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:07,595 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] [2020-08-18 18:36:07,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:36:07,596 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:07,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:07,596 INFO L82 PathProgramCache]: Analyzing trace with hash 2013051811, now seen corresponding path program 1 times [2020-08-18 18:36:07,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:07,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349559314] [2020-08-18 18:36:07,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:07,920 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:07,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:07,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:07,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:07,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:07,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:07,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:07,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:36:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:07,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:07,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:36:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:08,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:08,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 18:36:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:08,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 18:36:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:08,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349559314] [2020-08-18 18:36:08,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:08,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:36:08,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416488325] [2020-08-18 18:36:08,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:36:08,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:08,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:36:08,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:36:08,056 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 7 states. [2020-08-18 18:36:08,362 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:09,718 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:10,292 INFO L93 Difference]: Finished difference Result 782 states and 1053 transitions. [2020-08-18 18:36:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 18:36:10,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-08-18 18:36:10,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:10,303 INFO L225 Difference]: With dead ends: 782 [2020-08-18 18:36:10,304 INFO L226 Difference]: Without dead ends: 545 [2020-08-18 18:36:10,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:36:10,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-08-18 18:36:10,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 452. [2020-08-18 18:36:10,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-08-18 18:36:10,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 561 transitions. [2020-08-18 18:36:10,405 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 561 transitions. Word has length 72 [2020-08-18 18:36:10,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:10,405 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 561 transitions. [2020-08-18 18:36:10,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:36:10,406 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 561 transitions. [2020-08-18 18:36:10,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 18:36:10,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:10,407 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] [2020-08-18 18:36:10,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:36:10,408 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:10,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:10,408 INFO L82 PathProgramCache]: Analyzing trace with hash -601082987, now seen corresponding path program 1 times [2020-08-18 18:36:10,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:10,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075757735] [2020-08-18 18:36:10,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:10,681 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:10,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:10,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:10,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:10,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:10,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:10,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:36:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:10,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:36:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:10,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:10,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 18:36:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:10,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 18:36:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 18:36:10,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075757735] [2020-08-18 18:36:10,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:10,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:36:10,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427275690] [2020-08-18 18:36:10,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:36:10,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:10,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:36:10,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:36:10,842 INFO L87 Difference]: Start difference. First operand 452 states and 561 transitions. Second operand 9 states. [2020-08-18 18:36:11,221 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:11,830 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:12,679 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:13,040 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:13,431 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:13,696 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:14,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:14,289 INFO L93 Difference]: Finished difference Result 948 states and 1227 transitions. [2020-08-18 18:36:14,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 18:36:14,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 18:36:14,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:14,295 INFO L225 Difference]: With dead ends: 948 [2020-08-18 18:36:14,295 INFO L226 Difference]: Without dead ends: 524 [2020-08-18 18:36:14,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 18:36:14,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-08-18 18:36:14,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 449. [2020-08-18 18:36:14,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-18 18:36:14,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 552 transitions. [2020-08-18 18:36:14,374 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 552 transitions. Word has length 70 [2020-08-18 18:36:14,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:14,375 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 552 transitions. [2020-08-18 18:36:14,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:36:14,375 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 552 transitions. [2020-08-18 18:36:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 18:36:14,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:14,377 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] [2020-08-18 18:36:14,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:36:14,377 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:14,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:14,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1418290782, now seen corresponding path program 1 times [2020-08-18 18:36:14,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:14,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142729508] [2020-08-18 18:36:14,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,635 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:14,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:36:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:36:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 18:36:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 18:36:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:14,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142729508] [2020-08-18 18:36:14,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:14,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:36:14,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185047071] [2020-08-18 18:36:14,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:36:14,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:14,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:36:14,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:36:14,766 INFO L87 Difference]: Start difference. First operand 449 states and 552 transitions. Second operand 9 states. [2020-08-18 18:36:15,202 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:16,125 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:16,435 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:16,747 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:17,023 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:18,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:18,208 INFO L93 Difference]: Finished difference Result 1360 states and 1888 transitions. [2020-08-18 18:36:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:36:18,210 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-18 18:36:18,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:18,219 INFO L225 Difference]: With dead ends: 1360 [2020-08-18 18:36:18,220 INFO L226 Difference]: Without dead ends: 939 [2020-08-18 18:36:18,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:36:18,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-18 18:36:18,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 795. [2020-08-18 18:36:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-18 18:36:18,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 992 transitions. [2020-08-18 18:36:18,398 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 992 transitions. Word has length 87 [2020-08-18 18:36:18,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:18,398 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 992 transitions. [2020-08-18 18:36:18,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:36:18,399 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 992 transitions. [2020-08-18 18:36:18,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 18:36:18,401 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:18,401 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] [2020-08-18 18:36:18,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:36:18,402 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:18,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:18,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1655372524, now seen corresponding path program 1 times [2020-08-18 18:36:18,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:18,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058687673] [2020-08-18 18:36:18,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,675 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:36:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:36:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 18:36:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 18:36:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:18,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058687673] [2020-08-18 18:36:18,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:18,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:36:18,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7923324] [2020-08-18 18:36:18,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:36:18,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:18,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:36:18,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:36:18,743 INFO L87 Difference]: Start difference. First operand 795 states and 992 transitions. Second operand 6 states. [2020-08-18 18:36:19,229 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:20,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:20,156 INFO L93 Difference]: Finished difference Result 1342 states and 1669 transitions. [2020-08-18 18:36:20,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:36:20,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-08-18 18:36:20,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:20,163 INFO L225 Difference]: With dead ends: 1342 [2020-08-18 18:36:20,163 INFO L226 Difference]: Without dead ends: 783 [2020-08-18 18:36:20,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:36:20,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-08-18 18:36:20,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 681. [2020-08-18 18:36:20,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-08-18 18:36:20,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 812 transitions. [2020-08-18 18:36:20,277 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 812 transitions. Word has length 83 [2020-08-18 18:36:20,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:20,280 INFO L479 AbstractCegarLoop]: Abstraction has 681 states and 812 transitions. [2020-08-18 18:36:20,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:36:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 812 transitions. [2020-08-18 18:36:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 18:36:20,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:20,288 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] [2020-08-18 18:36:20,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:36:20,291 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:20,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:20,291 INFO L82 PathProgramCache]: Analyzing trace with hash 765386145, now seen corresponding path program 1 times [2020-08-18 18:36:20,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:20,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379785136] [2020-08-18 18:36:20,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,539 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:20,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:36:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:36:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 18:36:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 18:36:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:20,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379785136] [2020-08-18 18:36:20,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:20,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:36:20,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011389932] [2020-08-18 18:36:20,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:36:20,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:20,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:36:20,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:36:20,663 INFO L87 Difference]: Start difference. First operand 681 states and 812 transitions. Second operand 9 states. [2020-08-18 18:36:21,638 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:22,009 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:22,269 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:22,497 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:23,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:23,097 INFO L93 Difference]: Finished difference Result 1456 states and 1829 transitions. [2020-08-18 18:36:23,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:36:23,097 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-18 18:36:23,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:23,103 INFO L225 Difference]: With dead ends: 1456 [2020-08-18 18:36:23,103 INFO L226 Difference]: Without dead ends: 803 [2020-08-18 18:36:23,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:36:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-08-18 18:36:23,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 701. [2020-08-18 18:36:23,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-18 18:36:23,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 832 transitions. [2020-08-18 18:36:23,218 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 832 transitions. Word has length 87 [2020-08-18 18:36:23,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:23,218 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 832 transitions. [2020-08-18 18:36:23,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:36:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 832 transitions. [2020-08-18 18:36:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 18:36:23,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:23,221 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] [2020-08-18 18:36:23,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:36:23,222 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:23,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:23,222 INFO L82 PathProgramCache]: Analyzing trace with hash -2143377757, now seen corresponding path program 1 times [2020-08-18 18:36:23,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:23,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671488342] [2020-08-18 18:36:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,484 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:23,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:36:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:36:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 18:36:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 18:36:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:23,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671488342] [2020-08-18 18:36:23,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:23,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 18:36:23,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843308879] [2020-08-18 18:36:23,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 18:36:23,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:23,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 18:36:23,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:36:23,631 INFO L87 Difference]: Start difference. First operand 701 states and 832 transitions. Second operand 11 states. [2020-08-18 18:36:24,163 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:24,402 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:24,638 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:25,352 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:25,617 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:25,853 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:26,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:26,537 INFO L93 Difference]: Finished difference Result 1322 states and 1646 transitions. [2020-08-18 18:36:26,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:36:26,538 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-08-18 18:36:26,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:26,545 INFO L225 Difference]: With dead ends: 1322 [2020-08-18 18:36:26,545 INFO L226 Difference]: Without dead ends: 649 [2020-08-18 18:36:26,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:36:26,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-08-18 18:36:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 576. [2020-08-18 18:36:26,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-08-18 18:36:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 668 transitions. [2020-08-18 18:36:26,632 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 668 transitions. Word has length 87 [2020-08-18 18:36:26,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:26,633 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 668 transitions. [2020-08-18 18:36:26,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 18:36:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 668 transitions. [2020-08-18 18:36:26,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 18:36:26,636 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:26,636 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] [2020-08-18 18:36:26,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:36:26,637 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:26,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:26,637 INFO L82 PathProgramCache]: Analyzing trace with hash 858193610, now seen corresponding path program 1 times [2020-08-18 18:36:26,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:26,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599211131] [2020-08-18 18:36:26,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:26,988 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:26,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:36:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 18:36:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 18:36:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 18:36:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 18:36:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:36:27,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599211131] [2020-08-18 18:36:27,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:36:27,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 18:36:27,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854178183] [2020-08-18 18:36:27,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:36:27,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:27,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:36:27,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:36:27,185 INFO L87 Difference]: Start difference. First operand 576 states and 668 transitions. Second operand 12 states. [2020-08-18 18:36:27,768 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:28,733 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:29,405 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:29,726 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:29,962 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:30,242 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:30,496 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:31,707 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:31,987 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:32,598 INFO L93 Difference]: Finished difference Result 1645 states and 2041 transitions. [2020-08-18 18:36:32,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 18:36:32,602 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-08-18 18:36:32,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:32,610 INFO L225 Difference]: With dead ends: 1645 [2020-08-18 18:36:32,610 INFO L226 Difference]: Without dead ends: 1269 [2020-08-18 18:36:32,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 18:36:32,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-08-18 18:36:32,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1155. [2020-08-18 18:36:32,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-08-18 18:36:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1335 transitions. [2020-08-18 18:36:32,872 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1335 transitions. Word has length 91 [2020-08-18 18:36:32,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:32,873 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1335 transitions. [2020-08-18 18:36:32,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:36:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1335 transitions. [2020-08-18 18:36:32,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 18:36:32,877 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:32,877 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:32,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:36:32,878 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1244109311, now seen corresponding path program 1 times [2020-08-18 18:36:32,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:32,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760195706] [2020-08-18 18:36:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,192 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:33,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:36:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:36:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:36:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:36:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 18:36:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 18:36:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 18:36:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 18:36:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 18:36:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-18 18:36:33,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760195706] [2020-08-18 18:36:33,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:36:33,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 18:36:33,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824946133] [2020-08-18 18:36:33,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 18:36:33,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:33,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 18:36:33,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 18:36:33,458 INFO L87 Difference]: Start difference. First operand 1155 states and 1335 transitions. Second operand 16 states. [2020-08-18 18:36:34,128 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:34,498 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 18:36:34,758 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 18:36:35,018 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 18:36:35,644 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:35,940 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:36,315 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:36:36,595 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:36:37,424 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:38,075 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:38,361 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:38,676 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:39,134 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:36:39,625 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:36:39,913 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:40,160 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:40,426 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:40,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:40,879 INFO L93 Difference]: Finished difference Result 2146 states and 2551 transitions. [2020-08-18 18:36:40,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 18:36:40,879 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 134 [2020-08-18 18:36:40,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:40,886 INFO L225 Difference]: With dead ends: 2146 [2020-08-18 18:36:40,886 INFO L226 Difference]: Without dead ends: 1185 [2020-08-18 18:36:40,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-18 18:36:40,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2020-08-18 18:36:41,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1065. [2020-08-18 18:36:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-08-18 18:36:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1223 transitions. [2020-08-18 18:36:41,052 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1223 transitions. Word has length 134 [2020-08-18 18:36:41,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:41,053 INFO L479 AbstractCegarLoop]: Abstraction has 1065 states and 1223 transitions. [2020-08-18 18:36:41,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 18:36:41,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1223 transitions. [2020-08-18 18:36:41,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-08-18 18:36:41,058 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:41,059 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:41,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:36:41,059 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:41,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:41,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1284254506, now seen corresponding path program 1 times [2020-08-18 18:36:41,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:41,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459805204] [2020-08-18 18:36:41,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,395 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:41,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:36:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:36:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:36:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:36:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 18:36:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:36:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 18:36:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:36:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 18:36:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 18:36:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 18:36:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-08-18 18:36:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 18:36:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2020-08-18 18:36:41,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459805204] [2020-08-18 18:36:41,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:36:41,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 18:36:41,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217703191] [2020-08-18 18:36:41,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 18:36:41,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:41,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 18:36:41,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-18 18:36:41,860 INFO L87 Difference]: Start difference. First operand 1065 states and 1223 transitions. Second operand 16 states. [2020-08-18 18:36:43,105 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:36:43,365 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:43,630 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:43,870 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:44,123 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:44,696 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:45,216 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 18:36:45,675 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 18:36:46,278 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:48,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:48,065 INFO L93 Difference]: Finished difference Result 2947 states and 3535 transitions. [2020-08-18 18:36:48,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-18 18:36:48,065 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 241 [2020-08-18 18:36:48,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:48,076 INFO L225 Difference]: With dead ends: 2947 [2020-08-18 18:36:48,077 INFO L226 Difference]: Without dead ends: 1803 [2020-08-18 18:36:48,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=449, Invalid=1807, Unknown=0, NotChecked=0, Total=2256 [2020-08-18 18:36:48,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2020-08-18 18:36:48,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1431. [2020-08-18 18:36:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1431 states. [2020-08-18 18:36:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1658 transitions. [2020-08-18 18:36:48,325 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1658 transitions. Word has length 241 [2020-08-18 18:36:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:48,326 INFO L479 AbstractCegarLoop]: Abstraction has 1431 states and 1658 transitions. [2020-08-18 18:36:48,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 18:36:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1658 transitions. [2020-08-18 18:36:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-08-18 18:36:48,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:48,333 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:48,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:36:48,334 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:48,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:48,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1853664495, now seen corresponding path program 1 times [2020-08-18 18:36:48,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:48,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081284078] [2020-08-18 18:36:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,671 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:48,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:36:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:36:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:36:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:36:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 18:36:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:36:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:36:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 18:36:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:36:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-18 18:36:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-18 18:36:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-18 18:36:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 18:36:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-18 18:36:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 85 proven. 31 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-18 18:36:49,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081284078] [2020-08-18 18:36:49,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:36:49,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 18:36:49,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30282004] [2020-08-18 18:36:49,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 18:36:49,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:49,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 18:36:49,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-18 18:36:49,011 INFO L87 Difference]: Start difference. First operand 1431 states and 1658 transitions. Second operand 17 states. [2020-08-18 18:36:49,721 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:50,063 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:50,360 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:50,595 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:36:51,261 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:52,174 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:36:52,557 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:52,819 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:53,469 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:54,128 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:54,383 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:36:54,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:36:54,951 INFO L93 Difference]: Finished difference Result 2569 states and 3040 transitions. [2020-08-18 18:36:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-18 18:36:54,952 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 247 [2020-08-18 18:36:54,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:36:54,961 INFO L225 Difference]: With dead ends: 2569 [2020-08-18 18:36:54,961 INFO L226 Difference]: Without dead ends: 1456 [2020-08-18 18:36:54,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2020-08-18 18:36:54,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2020-08-18 18:36:55,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1402. [2020-08-18 18:36:55,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1402 states. [2020-08-18 18:36:55,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1608 transitions. [2020-08-18 18:36:55,269 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1608 transitions. Word has length 247 [2020-08-18 18:36:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:36:55,270 INFO L479 AbstractCegarLoop]: Abstraction has 1402 states and 1608 transitions. [2020-08-18 18:36:55,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 18:36:55,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1608 transitions. [2020-08-18 18:36:55,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-08-18 18:36:55,281 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:55,282 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:55,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 18:36:55,282 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:55,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:55,283 INFO L82 PathProgramCache]: Analyzing trace with hash -276065170, now seen corresponding path program 1 times [2020-08-18 18:36:55,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:55,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523155171] [2020-08-18 18:36:55,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,608 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:36:55,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:36:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:36:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:36:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:36:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:36:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:36:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:36:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 18:36:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:36:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:36:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 18:36:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:36:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:36:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:36:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-18 18:36:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-08-18 18:36:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:36:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 18:36:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:36:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:36:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:36:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-18 18:36:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:55,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 18:36:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:36:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 92 proven. 26 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-08-18 18:36:56,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523155171] [2020-08-18 18:36:56,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:36:56,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 18:36:56,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268505499] [2020-08-18 18:36:56,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 18:36:56,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:36:56,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 18:36:56,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-08-18 18:36:56,009 INFO L87 Difference]: Start difference. First operand 1402 states and 1608 transitions. Second operand 17 states.