/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:07:58,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:07:58,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:07:58,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:07:58,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:07:58,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:07:58,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:07:58,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:07:58,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:07:58,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:07:58,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:07:58,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:07:58,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:07:58,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:07:58,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:07:58,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:07:58,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:07:58,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:07:58,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:07:58,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:07:58,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:07:58,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:07:58,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:07:58,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:07:58,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:07:58,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:07:58,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:07:58,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:07:58,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:07:58,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:07:58,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:07:58,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:07:58,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:07:58,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:07:58,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:07:58,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:07:58,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:07:58,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:07:58,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:07:58,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:07:58,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:07:58,812 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 [2020-09-21 10:07:58,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:07:58,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:07:58,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:07:58,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:07:58,842 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:07:58,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:07:58,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:07:58,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:07:58,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:07:58,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:07:58,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:07:58,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:07:58,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:07:58,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:07:58,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:07:58,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:07:58,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:07:58,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:07:58,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:07:58,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:07:58,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:07:58,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:07:58,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:07:58,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:07:58,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:07:58,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:07:58,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:07:58,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:07:58,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:07:58,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:07:59,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:07:59,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:07:59,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:07:59,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:07:59,365 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:07:59,366 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-09-21 10:07:59,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d87fec3b2/fba15e4d5029483e984773f164395f0b/FLAG810085d55 [2020-09-21 10:08:00,092 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:08:00,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-09-21 10:08:00,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d87fec3b2/fba15e4d5029483e984773f164395f0b/FLAG810085d55 [2020-09-21 10:08:00,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d87fec3b2/fba15e4d5029483e984773f164395f0b [2020-09-21 10:08:00,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:08:00,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:08:00,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:08:00,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:08:00,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:08:00,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:08:00" (1/1) ... [2020-09-21 10:08:00,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:00, skipping insertion in model container [2020-09-21 10:08:00,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:08:00" (1/1) ... [2020-09-21 10:08:00,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:08:00,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:08:00,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:08:00,907 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:08:01,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:08:01,198 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:08:01,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:01 WrapperNode [2020-09-21 10:08:01,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:08:01,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:08:01,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:08:01,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:08:01,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:01" (1/1) ... [2020-09-21 10:08:01,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:01" (1/1) ... [2020-09-21 10:08:01,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:01" (1/1) ... [2020-09-21 10:08:01,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:01" (1/1) ... [2020-09-21 10:08:01,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:01" (1/1) ... [2020-09-21 10:08:01,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:01" (1/1) ... [2020-09-21 10:08:01,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:01" (1/1) ... [2020-09-21 10:08:01,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:08:01,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:08:01,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:08:01,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:08:01,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:01" (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 [2020-09-21 10:08:01,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:08:01,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:08:01,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:08:01,375 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:08:01,375 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:08:01,375 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:08:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:08:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:08:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:08:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:08:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 10:08:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:08:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:08:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:08:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:08:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:08:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:08:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 10:08:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:08:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:08:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:08:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:08:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:08:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:08:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:08:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:08:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:08:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:08:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:08:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:08:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:08:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 10:08:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 10:08:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:08:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:08:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:08:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:08:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:08:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:08:01,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:08:01,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 10:08:01,382 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 10:08:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:08:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:08:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:08:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:08:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:08:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:08:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:08:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:08:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:08:01,384 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:08:01,384 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 10:08:01,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:08:01,384 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:08:01,384 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:08:01,384 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:08:01,385 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:08:01,385 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:08:01,385 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:08:01,385 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:08:01,385 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:08:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:08:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:08:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:08:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:08:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:08:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 10:08:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:08:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:08:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:08:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:08:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:08:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:08:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:08:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:08:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:08:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:08:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:08:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:08:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:08:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:08:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:08:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:08:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:08:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 10:08:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:08:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:08:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:08:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:08:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:08:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 10:08:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 10:08:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 10:08:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:08:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:08:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:08:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:08:02,435 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:08:02,435 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:08:02,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:08:02 BoogieIcfgContainer [2020-09-21 10:08:02,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:08:02,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:08:02,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:08:02,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:08:02,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:08:00" (1/3) ... [2020-09-21 10:08:02,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccc712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:08:02, skipping insertion in model container [2020-09-21 10:08:02,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:01" (2/3) ... [2020-09-21 10:08:02,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccc712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:08:02, skipping insertion in model container [2020-09-21 10:08:02,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:08:02" (3/3) ... [2020-09-21 10:08:02,451 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-09-21 10:08:02,463 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:08:02,473 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:08:02,495 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:08:02,523 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:08:02,523 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:08:02,523 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:08:02,524 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:08:02,524 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:08:02,524 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:08:02,524 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:08:02,524 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:08:02,552 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-09-21 10:08:02,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:08:02,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:02,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:02,568 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:02,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:02,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-09-21 10:08:02,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:02,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949552834] [2020-09-21 10:08:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:03,307 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:03,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:03,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:03,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:03,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:03,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:03,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:08:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:03,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:08:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:03,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:08:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:08:03,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949552834] [2020-09-21 10:08:03,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:03,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:08:03,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084202696] [2020-09-21 10:08:03,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:08:03,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:03,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:08:03,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:08:03,463 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-09-21 10:08:04,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:04,787 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-09-21 10:08:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:08:04,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 10:08:04,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:04,809 INFO L225 Difference]: With dead ends: 350 [2020-09-21 10:08:04,810 INFO L226 Difference]: Without dead ends: 188 [2020-09-21 10:08:04,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:08:04,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-09-21 10:08:04,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-09-21 10:08:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-21 10:08:04,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-09-21 10:08:04,929 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-09-21 10:08:04,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:04,930 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-09-21 10:08:04,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:08:04,930 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-09-21 10:08:04,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 10:08:04,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:04,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:04,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:08:04,936 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:04,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:04,936 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-09-21 10:08:04,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:04,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269325115] [2020-09-21 10:08:04,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:05,302 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:05,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:05,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:05,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:05,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:05,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:08:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:05,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:08:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:05,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:08:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:08:05,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269325115] [2020-09-21 10:08:05,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:05,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:08:05,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281903034] [2020-09-21 10:08:05,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:08:05,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:05,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:08:05,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:08:05,366 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-09-21 10:08:05,769 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:06,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:06,857 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-09-21 10:08:06,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:08:06,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 10:08:06,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:06,861 INFO L225 Difference]: With dead ends: 279 [2020-09-21 10:08:06,861 INFO L226 Difference]: Without dead ends: 172 [2020-09-21 10:08:06,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:08:06,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-21 10:08:06,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-09-21 10:08:06,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-21 10:08:06,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-09-21 10:08:06,937 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-09-21 10:08:06,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:06,938 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-09-21 10:08:06,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:08:06,938 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-09-21 10:08:06,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 10:08:06,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:06,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:06,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:08:06,941 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:06,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:06,942 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-09-21 10:08:06,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:06,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923625804] [2020-09-21 10:08:06,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:07,412 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:07,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:07,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:07,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:07,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:07,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:07,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:08:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:07,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:08:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:07,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:08:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:08:07,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923625804] [2020-09-21 10:08:07,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:07,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:08:07,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049995894] [2020-09-21 10:08:07,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:08:07,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:07,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:08:07,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:08:07,592 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-09-21 10:08:07,975 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:08,372 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:08,694 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:08,997 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:10,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:10,593 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-09-21 10:08:10,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:08:10,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-09-21 10:08:10,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:10,597 INFO L225 Difference]: With dead ends: 292 [2020-09-21 10:08:10,597 INFO L226 Difference]: Without dead ends: 172 [2020-09-21 10:08:10,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:08:10,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-21 10:08:10,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-09-21 10:08:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-21 10:08:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-09-21 10:08:10,637 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-09-21 10:08:10,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:10,637 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-09-21 10:08:10,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:08:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-09-21 10:08:10,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-21 10:08:10,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:10,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:10,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:08:10,641 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:10,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:10,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-09-21 10:08:10,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:10,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238353733] [2020-09-21 10:08:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:11,036 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:11,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:11,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:11,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:11,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:11,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:11,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:08:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:11,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:11,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:11,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:11,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-21 10:08:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:11,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-21 10:08:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:11,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-21 10:08:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:08:11,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238353733] [2020-09-21 10:08:11,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:11,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:08:11,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842187076] [2020-09-21 10:08:11,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:08:11,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:11,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:08:11,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:08:11,164 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-09-21 10:08:11,519 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:12,996 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:14,006 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-09-21 10:08:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:08:14,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-09-21 10:08:14,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:14,012 INFO L225 Difference]: With dead ends: 407 [2020-09-21 10:08:14,012 INFO L226 Difference]: Without dead ends: 287 [2020-09-21 10:08:14,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:08:14,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-09-21 10:08:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-09-21 10:08:14,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-09-21 10:08:14,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-09-21 10:08:14,088 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-09-21 10:08:14,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:14,088 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-09-21 10:08:14,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:08:14,089 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-09-21 10:08:14,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-21 10:08:14,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:14,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:14,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:08:14,091 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:14,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:14,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-09-21 10:08:14,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:14,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317526124] [2020-09-21 10:08:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,473 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:14,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:08:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 10:08:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 10:08:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 10:08:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:08:14,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317526124] [2020-09-21 10:08:14,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:14,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:08:14,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566333760] [2020-09-21 10:08:14,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:08:14,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:14,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:08:14,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:08:14,605 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-09-21 10:08:15,013 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:16,526 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:16,879 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:17,173 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:17,499 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:18,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:18,511 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-09-21 10:08:18,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 10:08:18,512 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-09-21 10:08:18,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:18,515 INFO L225 Difference]: With dead ends: 641 [2020-09-21 10:08:18,515 INFO L226 Difference]: Without dead ends: 421 [2020-09-21 10:08:18,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:08:18,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-09-21 10:08:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-09-21 10:08:18,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-09-21 10:08:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-09-21 10:08:18,591 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-09-21 10:08:18,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:18,592 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-09-21 10:08:18,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:08:18,592 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-09-21 10:08:18,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 10:08:18,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:18,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:18,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:08:18,595 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:18,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:18,595 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-09-21 10:08:18,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:18,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133229685] [2020-09-21 10:08:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,926 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:18,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:08:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:19,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:08:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:19,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:19,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:19,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:19,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:19,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:19,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-21 10:08:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:19,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 10:08:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:19,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 10:08:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:08:19,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133229685] [2020-09-21 10:08:19,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:19,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:08:19,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250986828] [2020-09-21 10:08:19,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:08:19,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:19,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:08:19,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:08:19,200 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-09-21 10:08:19,591 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:20,149 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:22,074 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:24,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:24,663 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-09-21 10:08:24,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-21 10:08:24,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-09-21 10:08:24,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:24,671 INFO L225 Difference]: With dead ends: 980 [2020-09-21 10:08:24,671 INFO L226 Difference]: Without dead ends: 749 [2020-09-21 10:08:24,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-09-21 10:08:24,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-09-21 10:08:24,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-09-21 10:08:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-09-21 10:08:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-09-21 10:08:24,840 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-09-21 10:08:24,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:24,841 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-09-21 10:08:24,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:08:24,841 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-09-21 10:08:24,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 10:08:24,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:24,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:24,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:08:24,845 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:24,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:24,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-09-21 10:08:24,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:24,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734822101] [2020-09-21 10:08:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,134 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:25,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:08:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:08:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-21 10:08:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 10:08:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 10:08:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:25,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:08:25,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734822101] [2020-09-21 10:08:25,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:25,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:08:25,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497403574] [2020-09-21 10:08:25,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:08:25,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:25,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:08:25,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:08:25,341 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-09-21 10:08:26,207 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:26,461 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:08:26,763 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:28,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:28,221 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-09-21 10:08:28,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:08:28,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-09-21 10:08:28,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:28,227 INFO L225 Difference]: With dead ends: 1250 [2020-09-21 10:08:28,228 INFO L226 Difference]: Without dead ends: 723 [2020-09-21 10:08:28,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:08:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-09-21 10:08:28,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-09-21 10:08:28,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-09-21 10:08:28,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-09-21 10:08:28,364 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-09-21 10:08:28,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:28,365 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-09-21 10:08:28,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:08:28,365 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-09-21 10:08:28,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 10:08:28,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:28,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:28,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:08:28,368 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:28,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:28,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-09-21 10:08:28,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:28,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067156981] [2020-09-21 10:08:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,701 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:28,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:08:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:08:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-21 10:08:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 10:08:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 10:08:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:28,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:08:28,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067156981] [2020-09-21 10:08:28,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:28,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:08:28,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097504544] [2020-09-21 10:08:28,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:08:28,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:28,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:08:28,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:08:28,893 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-09-21 10:08:29,428 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:29,762 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:30,062 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:30,883 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:31,188 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:08:31,510 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:31,806 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:33,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:33,172 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-09-21 10:08:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 10:08:33,184 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-09-21 10:08:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:33,192 INFO L225 Difference]: With dead ends: 1343 [2020-09-21 10:08:33,192 INFO L226 Difference]: Without dead ends: 689 [2020-09-21 10:08:33,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-09-21 10:08:33,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-09-21 10:08:33,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-09-21 10:08:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-09-21 10:08:33,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-09-21 10:08:33,331 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-09-21 10:08:33,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:33,332 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-09-21 10:08:33,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:08:33,332 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-09-21 10:08:33,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-09-21 10:08:33,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:33,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:33,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:08:33,336 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:33,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:33,336 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-09-21 10:08:33,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:33,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417627144] [2020-09-21 10:08:33,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,700 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:33,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:08:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:08:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 10:08:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-21 10:08:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-21 10:08:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:08:33,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417627144] [2020-09-21 10:08:33,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:33,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-21 10:08:33,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873018100] [2020-09-21 10:08:33,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 10:08:33,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:33,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 10:08:33,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-21 10:08:33,948 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-09-21 10:08:34,780 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:35,093 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:35,392 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:36,657 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:37,439 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:37,862 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:08:38,201 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:08:39,083 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:39,473 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:40,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:40,205 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-09-21 10:08:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 10:08:40,206 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-09-21 10:08:40,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:40,212 INFO L225 Difference]: With dead ends: 1307 [2020-09-21 10:08:40,212 INFO L226 Difference]: Without dead ends: 682 [2020-09-21 10:08:40,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-09-21 10:08:40,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-09-21 10:08:40,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-09-21 10:08:40,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-09-21 10:08:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-09-21 10:08:40,332 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-09-21 10:08:40,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:40,333 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-09-21 10:08:40,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 10:08:40,333 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-09-21 10:08:40,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-21 10:08:40,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:40,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:40,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:08:40,336 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-09-21 10:08:40,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:40,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699884768] [2020-09-21 10:08:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,678 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:40,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:08:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 10:08:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 10:08:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-21 10:08:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 10:08:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-09-21 10:08:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-21 10:08:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-21 10:08:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-21 10:08:40,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699884768] [2020-09-21 10:08:40,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:08:40,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 10:08:40,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357558322] [2020-09-21 10:08:40,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:08:40,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:40,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:08:40,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:08:40,954 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-09-21 10:08:42,150 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:42,527 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:08:42,908 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:43,147 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:44,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:44,388 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-09-21 10:08:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:08:44,390 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-09-21 10:08:44,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:44,394 INFO L225 Difference]: With dead ends: 1216 [2020-09-21 10:08:44,394 INFO L226 Difference]: Without dead ends: 670 [2020-09-21 10:08:44,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:08:44,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-21 10:08:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-09-21 10:08:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-09-21 10:08:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-09-21 10:08:44,528 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-09-21 10:08:44,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:44,529 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-09-21 10:08:44,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:08:44,529 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-09-21 10:08:44,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-21 10:08:44,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:44,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:44,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:08:44,533 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:44,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:44,533 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-09-21 10:08:44,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:44,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329381563] [2020-09-21 10:08:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:44,874 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:44,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:44,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:44,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:44,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:44,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:08:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:44,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:44,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:44,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:45,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:45,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:45,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:45,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 10:08:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:45,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:45,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 10:08:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:45,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-21 10:08:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:45,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:45,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:45,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 10:08:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:45,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-09-21 10:08:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:45,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-21 10:08:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:45,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-21 10:08:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-21 10:08:45,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329381563] [2020-09-21 10:08:45,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:08:45,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 10:08:45,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603042206] [2020-09-21 10:08:45,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:08:45,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:45,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:08:45,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:08:45,150 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-09-21 10:08:46,182 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:46,512 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:46,821 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:47,627 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:47,946 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:48,238 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:49,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:49,595 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-09-21 10:08:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:08:49,595 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-09-21 10:08:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:49,599 INFO L225 Difference]: With dead ends: 1124 [2020-09-21 10:08:49,599 INFO L226 Difference]: Without dead ends: 573 [2020-09-21 10:08:49,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:08:49,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-09-21 10:08:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-09-21 10:08:49,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-09-21 10:08:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-09-21 10:08:49,702 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-09-21 10:08:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:49,703 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-09-21 10:08:49,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:08:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-09-21 10:08:49,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-21 10:08:49,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:49,706 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:49,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 10:08:49,706 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:49,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:49,707 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-09-21 10:08:49,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:49,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736955149] [2020-09-21 10:08:49,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,043 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:50,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:08:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:08:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 10:08:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-21 10:08:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-21 10:08:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 10:08:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-21 10:08:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-21 10:08:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-21 10:08:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-21 10:08:50,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736955149] [2020-09-21 10:08:50,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:08:50,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 10:08:50,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379570684] [2020-09-21 10:08:50,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 10:08:50,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:50,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 10:08:50,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:08:50,330 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-09-21 10:08:50,777 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:08:51,504 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:08:52,626 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:08:53,235 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-21 10:08:53,836 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-09-21 10:08:54,127 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:08:55,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:55,986 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-09-21 10:08:55,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 10:08:55,987 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-09-21 10:08:55,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:55,997 INFO L225 Difference]: With dead ends: 1637 [2020-09-21 10:08:55,997 INFO L226 Difference]: Without dead ends: 1109 [2020-09-21 10:08:55,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-09-21 10:08:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-09-21 10:08:56,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-09-21 10:08:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-09-21 10:08:56,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-09-21 10:08:56,208 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-09-21 10:08:56,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:56,211 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-09-21 10:08:56,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 10:08:56,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-09-21 10:08:56,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-21 10:08:56,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:56,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:56,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 10:08:56,215 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:56,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:56,216 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-09-21 10:08:56,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:56,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614421187] [2020-09-21 10:08:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,632 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:08:56,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:08:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:08:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:08:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:08:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:08:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:08:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 10:08:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-21 10:08:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-21 10:08:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:08:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 10:08:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-21 10:08:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-21 10:08:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-21 10:08:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 10:08:56,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614421187] [2020-09-21 10:08:56,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:08:56,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-21 10:08:56,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437055385] [2020-09-21 10:08:56,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 10:08:56,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:56,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 10:08:56,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:08:56,883 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states.